Invasion History
First Non-native North American Tidal Record: 1921First Non-native West Coast Tidal Record: 1921
First Non-native East/Gulf Coast Tidal Record: 1951
General Invasion History:
The tubeworm Ficopomatus enigmaticus was first described from Caen, France, on the English Channel Coast (Fauvel 1923, cited by Carlton 1979; Goulletquer et al. 2002). However, the native range of this species is unknown. Fauvel (1923; cited by Carlton 1979) hypothesized an Indian/Indonesian origin, but many authors have ruled this out. It first appeared more or less simultaneously in France, Spain, England, Australia and California (Fauvel 1923; cited by Carlton 1979). The southern coast of Australia is a more likely (though still uncertain) native region (Allen 1953; ten Hove and Weerdenburg 1978; Keough and Ross 1999). Since then it has been recorded from Hawaii, the East and Gulf coasts of the US, the Baltic Sea (Jensen and Knudsen 2005), the Mediterranean (Bianchi and Morri 1996), the Caspian Sea (Grigorovich et al. 2003), Africa (ten Hove and Weerdenburg 1978), South America (Obenat and Pezzani 1991), New Zealand (Read and Gordon 1991), Japan (Asakura 1992) and Taiwan (ten Hove and Weerdenburg 1978).
North American Invasion History:
Invasion History on the West Coast:
Ficopomatus enigmaticus was first reported from San Francisco Bay, California in 1921, when it was found building conspicuous reefs in Lake Merritt lagoon (Carlton 1979). By the 1970s, it was widespread in the Bay, occurring in the central Bay at Alameda and Berkeley, in the south Bay at Palo Alto and Foster City, and in San Pablo Bay at Corte Madera Creek, San Rafael, and San Quentin (Carlton 1979). It has been collected in brackish water in the Petaluma and Napa Rivers (Cohen and Carlton 1995; Cohen et al. 2005). In 1994, F. enigmaticus was collected in the old Salinas River Channel at Moss in the Elkhorn Slough system. It was subsequently found at several locations in Elkhorn Slough during a 1998 survey (Wasson et al. 2001).
This serpulid is established in Southern California, but its distribution is spotty. In 2000, a few specimens of Ficopomatus enigmaticus were collected in Los Angeles Habor (Cohen et al. 2002; Bastida-Zavala et al. 2008). Collections were also reported from San Diego Bay in 2000 (Bastida-Zavala et al. 2008), but these records were erroneous (Bastida-Zavala, pers. comm., 10 November 2015, cited by Pernet et al. 2016). In 2011, 86 specimens were collected on fouling plates in Newport Bay, although none were found in Los Angeles Harbor or San Diego Bay (California Department of Fish and Game 2014). In 2008 and 2015, F. enigmaticus was found in two lagoons (Arroyo Burro Creek, Mission Creek Lagoon) in Santa Barbara County. A population was found along the lower 3 km of the Los Angeles River, in the vicinity of marinas (Pernet et al. 2016). Yee et al. (2019) found unexpectedly high genetic diversity in California F. enigmaticus populations, suggesting multiple introduction.
Invasion History on the East Coast:
Ficopomatus enigmaticus was found on settling plates in Barnegat Bay, New Jersey in 1976 (Hoagland and Turner 1980) and it appears to be established there, although at low densities (Loveland and Shafto 1984). In 1979, it was collected on the Atlantic Coast of Florida, in the Banana River, Indian River Lagoon (Fofonoff, unpublished data). In 1994-1995, F. enigmaticus was found on settling plates in Chesapeake Bay in Norfolk, Virginia; Baltimore Harbor, Maryland; and the Severn River, Maryland (McCann et al. unpublished; Ruiz et al. unpublished). In 2006, a single specimen was collected in the East River, Brunswick, Georgia (USGS Nonindigenous Aquatic Species Program 2007).
Invasion History on the Gulf Coast:
Ficopomatus enigmaticus was found on a boat in Corpus Christi, Texas in 1951 (Hartman 1952), and was subsequently found in the same locality on riprap by Andy Cohen in 1995 (McCann and Carlton, unpublished). It was also reported from Aransas Bay, Texas in 1952 (ten Hove and Weerdenburg 1978); Galveston Bay, Texas in 2003 (Ruiz et al. unpublished data); Pascagoula River, Mississippi in 1997 (USNM 186522, U.S. National Museum of Natural History 2007); and Tampa Bay, Florida in 2002 (Ruiz et al., unpublished data).
Invasion History in Hawaii:
Ficopomatus enigmaticus was first collected in 1937 from Pearl Harbor, Hawaii (Coles et al. 1999b). Subsequently, in 1947, it was found in other Oahu locations, including the Alai Wai Canal and Kewalo Basin (ten Hove and Weerdenburg 1978; Carlton and Eldredge 2009).
Invasion History Elsewhere in the World:
Ficopomatus enigmaticus may be native to the southern coast of Australia, where it was first reported from Sydney in 1932 (ten Hove and Weerdenburg 1978). It also occurs in Port Phillip Bay, South Australia, and Western Australia (ten Hove and Weerdenburg 1978; Keough and Ross 1999). However, it is a relatively recent invader to New Zealand, where it was first collected in 1968, and is confined to the North Island (Read and Gordon 1991). Elsewhere in the Pacific, F. enigmaticus was collected from Kojima Bay, Japan in 1966 (Asakura 1992) and Taiwan (ten Hove and Weerdenburg 1978, no location details).
In Europe, as noted above, F. enigmaticus was first reported in 1921, from Caen, France (Fauvel 1923, cited by Carlton 1979; Goulletquer et al. 2002). It spread in a rapid, but spotty fashion throughout European estuaries, appearing most often in brackish lagoons, sometimes near thermal effluents. It was reported from docks in the Thames Estuary, London, England in 1923 (ten Hove 1978; Zibrowius and Thorp 1989); Plymouth, England in 1939 (Zibrowius and Thorp 1989); the Gulf of Cadiz, Spain in 1933 (ten Hove and Weerdenburg 1978); the Po River Delta on the Adriatic Sea in 1934 (Bianchi and Morri 1996); the Black Sea in 1929 (Gomiou et al. 2002); a lagoon in Israel in 1954 (Galil 2007); and the Lac de Tunis, Tunisia in 1969 (ten Hove and Weerdenburg 1978). In the Baltic Sea, it was found in Copenhagen Harbor in 1953, where it is confined to the vicinity of a thermal effluent (Jensen and Knudsen 2005). In 1961, it was first collected in the Caspian Sea, which it reached by shipping transport through canals (Grigorovich et al. 2003).
In 2016, F. enigmaticus was found in a degraded, landlocked, brackish marsh, Praia da Vitória Marsh, on the island of Terceira in the Azores. Since, the marsh is connected to the Atlantic only by water percolating through sand dunes, Costa et al. (2019) consider migratory birds to be likeliest vector.
Ficopomatus enigmaticus has colonized port areas on both sides of the south Atlantic, reaching the Rio de la Plata estuary, Uruguay in 1937 and Port Quequen, Argentina, in 1940 (Rioja 1943; Schwindt et al. 2001; Orensanz et al. 2002). On the other side of the Atlantic, this worm was first collected in Milnerton estuary, in Table Bay, near Cape Town, South Africa in 1951, and ranges around the tip of the continent, to Kosi Bay, on the Indian Ocean (Mead et al. 2011b).
Description
Ficopomatus enigmaticus secretes a calcareous tube, as do other serpulid polychaetes. Serpulids have a feathery crown of modified prostomial palps, called radioles (the prostomium is the first segment, projecting above the mouth). The radioles can be folded and withdrawn into the tube. One of the radioles is modified to form an operculum, which acts as a plug when the animal contracts. The peristomium (segment behind the mouth) is folded back to form a collar, which bears uniramous parapodia, with a distinctive set of collar chaetae, with spines or serrations. The collar is the first of seven thoracic chaeta-bearing segments (setigers). The subsequent segments have biramous parapodia. The dorsal branch of the parapodium is called the notopodium; the ventral is the neuropodium. Chaetae in the two branches and along the body can vary greatly in their morphology, which can be critical in the taxonomy of serpulids (Description from: Barnes 1983; ten Hove and Weerdenburg 1978; Blake and Ruff, in Carlton 2007).
The tube of F. enigmaticus is white, but often covered by a brown layer of algae. It is emicircular to circular in cross-section, and often bears irregularly placed flaring rings, indicating the previous positions of the peristome. Solitary and juvenile tubes may have faint longitudinal keels. The tubes are about 1 mm in diameter. The branchial (gill) radioles arise from paired lobes. There are about 7 (5-9) on the left and 8 (7-10) on the right, forming two semicircles on either side of the mouth. The feathery filaments of the branchiae (pinnulae) are larger towards the ends of the radioles. The operculum is shaped like an elongated funnel, with a concave distal surface and circular rows of brown inwardly curved terminal spines. The gills and operculum account for about 1/6 of the length of the worm. The peduncle of the operculum is D-shaped in cross-section. The collar (first thoracic segment) is high and not lobed, with a smooth edge. The thorax consists of 7 segments. There are two kinds of collar chaetae, thicker coarsely serrated chaetae, and hair-like (limbate). The subsequent thoracic segments bear short, rasplike chaetae, called uncinae. and limbate chaetae. The abdomen has about 60 segments (29-84, n=7, ten Hove and Weerdenburg 1978). The overall length of the worm reaches about 26 mm- the mean of a sample from New Zealand was 14.7 mm (Read and Gordon 1991; Bianchi and Morri 2001). The gills are green, brown, or white, often with the gill filaments barred. This worm may grow in colonies consisting of large masses of brown and white worm tubes. It is typically found in estuaries, particularly in brackish waters. (Description from: ten Hove and Weerdenburg 1978; Hayward and Ryland 1990; Read and Gordon 1991; Blake and Ruff, in Carlton 2007).
Styan et al. (2017) surveyed F. enigmaticus in southern Australia, a possible native region. They expected to see geographical patterns of genetic variation between populations in southeastern and southwestern Australia, a common feature of biogeography in the region. Instead, 2 clades, apparently cryptic species, had a mixed distribution in the two regions. A third clade, morphologically resembling F. uschakovi, was found in two southeastern estuaries (Styan et al. 2017). Genetic comparisons of definitely introduced populations with the cryptogenic Australian populations have not yet been made. Grosse (2021) identifed 3 clades form Majorca. Spain. One was the widespread Clae 1, and the others, Clades 4 and 5, are known only from Majorca but presumably introduced.
Taxonomy
Taxonomic Tree
Kingdom: | Animalia | |
Phylum: | Annelida | |
Class: | Polychaeta | |
Subclass: | Palpata | |
Order: | Canalipalpata | |
Suborder: | Sabellida | |
Family: | Serpulidae | |
SubFamily: | Serpulinae | |
Genus: | Ficopomatus | |
Species: | enigmaticus |
Synonyms
Potentially Misidentified Species
Native to the Indo-Pacific
Ficopomatus miamiensis
Native FL-Atlantic Panama, introduced to Pacific in Mexico and Panama
Ficopomatus uschakovi
Native to the Indo-Pacific, introduced from Jacksonville FL to Corpus Christi TX, Venezuela, Brazil, West Africa, Pacfic Panama
Ecology
General:
The serpulid polychaete Ficopomatus enigmaticus feeds by extending its feathery gills to trap plankton in the water column. The plankton is then transported by cilia to the mouth. In most populations, the two sexes are separate (Tunisia- Vuillemin 1965; Argentina- Obenat and Pezzani 1994), but in at least one population (Thames estuary, England), a small percentage of hermaphroditic individuals were seen (Dixon 1981). Spawning was seasonal (June – October) in the temperate Thames estuary, apparently triggered by temperatures rising above 18C (Dixon 1981). In the Mar Chiquita, Argentina, there were double spawning seasons, November-December and April-May (Obenat and Pezzani 1994). Eggs and sperm are released into the water column, and the larvae are planktotrophic. Based on studies of gametogenesis and settlement, larval development time was estimated at 45-90 days in the Thames estuary (Dixon 1981). However, to our knowledge, the larvae have not been reared in the laboratory.
Ficopomatus enigmaticus tolerates a wide range of temperatures and salinity. At the northern limits of its range in North America and Europe, its establishment seems to be favored by thermal effluents (ten Hove 1974: Turner and Hoagland 1980; Jensen and Knudsen 2005). A temperature of 18C is apparently required for spawning (Dixon 1981). This tubeworm tolerates salinities ranging from 1 to 55 PSU, but seems especially abundant in brackish waters (ten Hove and Weerdenberg 1978), possibly because of a lack of competition. It settles and secretes a calcareous tube on surfaces such as rocks, shells, plant leaves, pilings and pontoon floats. While F. enigmaticus is widespread, reef development does not always occur. Shallow estuaries and lagoons with long retention times appear especially prone to reef formation. The reefs begin as clumps of intertwined tubes, attached to sticks, stone, shells etc., and grow over many generations of settlement. Reefs can reach 0.5 m in thickness and 7 m across (Bianchi and Morri 1996; Schwindt et al. 2001).
Food:
Phytoplankton
Trophic Status:
Suspension Feeder
SusFedHabitats
General Habitat | Coarse Woody Debris | None |
General Habitat | Oyster Reef | None |
General Habitat | Marinas & Docks | None |
General Habitat | Unstructured Bottom | None |
General Habitat | Canals | None |
General Habitat | Rocky | None |
General Habitat | Vessel Hull | None |
General Habitat | Grass Bed | None |
Salinity Range | Oligohaline | 0.5-5 PSU |
Salinity Range | Mesohaline | 5-18 PSU |
Salinity Range | Polyhaline | 18-30 PSU |
Salinity Range | Euhaline | 30-40 PSU |
Salinity Range | Hyperhaline | 40+ PSU |
Tidal Range | Subtidal | None |
Tidal Range | Low Intertidal | None |
Vertical Habitat | Epibenthic | None |
Life History
Tolerances and Life History Parameters
Minimum Temperature (ºC) | 0 | Based on geographical range |
Maximum Temperature (ºC) | 30 | Lake Timsah, Israel (Ben-Eliahu and ten Hove 2011); Lagoon of Orbetello, Italy (Bianchi and Morri 2001). |
Minimum Salinity (‰) | 2 | Vuillemin 1965; Bianchi and Morri, 1996) |
Maximum Salinity (‰) | 55 | Vuillemin 1965 |
Minimum Reproductive Temperature | 18 | Thames estuary, spawning. Settlement of larvae occurs as temperatures as low as 10 C (Dixon 1981) |
Minimum Reproductive Salinity | 10 | Vuillemin 1965; Thomas and Thorp 1994 |
Minimum Duration | 30 | Larval period, field estimate (Dixon 1981) |
Maximum Duration | 90 | Larval period, field estimate (Dixon 1981) |
Maximum Length (mm) | 25 | Lagoon of Orbetello, Italy (Bianchi and Morri 2001). |
Broad Temperature Range | None | Cold temperate-Subtropical |
Broad Salinity Range | None | Oligohaline-Euhaline |
Minimum Temperature (ºC) | 1 | Field data, Bianchi and Morri 1996; Dixon 1981;Ruiz et al. unpublished data |
Maximum Temperature (ºC) | 30 | Bianchi and Morri 1996; Dixon 1981;Ruiz et al. unpublished data |
Minimum Salinity (‰) | 1 | Bianchi and Morri 1996; Dixon 1981;Ruiz et al. unpublished data |
Maximum Salinity (‰) | 55 | Bianchi and Morri 1996; Dixon 1981;Ruiz et al. unpublished data |
General Impacts
Economic Impacts: In a number of estuaries around the world, the tubeworm Ficopomatus enigmaticus is a major fouling organism, covering man-made surfaces with thick layers of calcareous tubes. It created fouling problems on boats, pilings and pontoons in New Zealand (Read and Gordon 1991), and frequently blocks lock gates and other structures used to control flow in estuaries (Nelson-Smith 1971; Zibrowius 1994).
Ecological Impacts: In many brackish and hypersaline areas around the world, F. enigmaticus has formed large reef-like colonies, greatly affecting estuarine habitats. These calcareous masses can be 1-3 m across, reaching to within a few centimeters of the water's surface, causing reduced circulation, increased sedimentation, increased algal growth, and affecting planktonic and benthic communities through filtering of suspended particles (Davies et al. 1989; Thomas and Thorp 1994; Cohen and Carlton 1995; Bianchi and Morri 1996; Schwindt et al. 2001; Bruschetti et al. 2008).
Herbivory- Ficopomatus enigmaticus reefs can filter significant quantities of phytoplankton and was estimated to clear the volume of the Marina del Gama (near Cape Town, South Africa) in 26 hours (Davies et al. 1989). Phytoplankton chlorophyll decreased by up to 56% near reefs in summer in the Mar Chiquita lagoon, Argentina (Bruschetti et al. 2008).
Competition- In the Lagune Orbetello, Italy, F. enigmaticus tubes outnumbered and outgrew those of another introduced serpulid (Hydroides dianthus), which produces thicker and stronger tubes, but with slower growth (Bianchi and Morri 2001).
Habitat Change- In England, F. enigmaticus forms extensive reefs in sheltered lagoons, increasing habitat for attached organisms, and shelter for mobile ones (Thomas and Thorp 1994). In the Po River Delta, Italy, it forms solid habitat for attached organisms. The tubes break down to create gravelly, carbonaceous sediments (Bianchi and Morri 1996). In California, F. enigmaticus was first noticed in Lake Merritt, San Francisco Bay, when large reefs of worm-tubes were discovered. Ecological impacts of these reefs have not been studied and abundances of the worms are now lower than in the early 20th century (Carlton 1979; Cohen and Carlton 1995). Ficopomatus reefs are also spreading in Elkhorn Slough. These reefs support higher densities of organisms than native oyster reefs, predominantly non-native species (Heiman et al. 2008). Reef-building in Mar Chiquita, Argentina, provided new habitat for the crab Cyrtograpsus angulatus (Schwindt et al. 2001). Reefs constructed by F. enigmaticus greatly increased sedimentation and decreased water circulation in the Mar Chiquita Lagoon, Argentina (Schwindt et al. 2001). Reefs had an increased frequency of epibiotic fauna compared to bare mud areas (amphipods, crabs, snails), and provided a more frequently used feeding and resting habitat for migratory shorebirds (Bruschetti et al. 2009).
Trophic Cascade- In the Mar Chiquita Lagoon, Argentina, the reefs supported increased populations of the crab Cyrtograpsus angulatus, resulting in increased predation and reduced abundance of infauna (Schwindt et a. 2001). The reefs also had increased use by resident and migratory shorebirds, but exclusion experiments did not show detectable evidence of increased mortality (Bruschetti et al. 2009).
Regional Impacts
NEP-V | Northern California to Mid Channel Islands | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus was first noticed in Lake Merritt, San Francisco Bay, when large reefs of worm-tubes were discovered. Ecological impacts of these reefs have not been studied and the abundance of worms is now lower than in the early 20th century (Carlton 1979; Cohen and Carlton 1995). Ficopomatus reefs are also spreading in Elkhorn Slough. These reefs support higher densities of organisms than native oyster reefs, predominantly non-native species (Heiman et al. 2008). | |||||
NEA-II | None | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus formed extensive reefs in sheltered lagoons, increasing habitat for attached organisms and shelter for mobile ones (Thomas and Thorp 1994). Ficopomatus enigmaticus fouling provided habitat for 3 introduced species (Amphibalanus improvisus, Rhithropanopeus harrisii, Mytilopsis leucophaeta) (Charles et al. 2018). | |||||
NEA-II | None | Ecological Impact | Herbivory | ||
The large biomass of F. enigmaticus in a lagoon in England appears to have extensively filtered the water, reducing phytplankton biomass (Thomas and Thorp 1994). | |||||
NEA-II | None | Ecological Impact | Trophic Cascade | ||
The growth of extensive reefs of F. enigmaticus shifted biomass and nutrients from the water column to the benthos (Thomas and Thorp 1994). | |||||
NEA-II | None | Economic Impact | Shipping/Boating | ||
Ficopomatus enigmaticus often fouls boats and blocks canals and tide gates in coastal lagoons (Nelson-Smith 1971; Eno 1996). 'However, at CUMB2 (marina in Cumbria, England) it was super-abundant and a severe fouling nuisance on yacht hulls, pontoons and ropes. This marina has previously requested advice from us as to how to remove it, has advised boat owners on what they can do about it, and has carried out cleaning and procedural' (Wood et al. 2015). Ficopomatus enigmaticus is also perceived as having negative impacts in marinas in Normandy (Charles et al. 2018). | |||||
WA-IV | None | Ecological Impact | Herbivory | ||
Filtation of phytoplankton by F. enigmaticus was estimated to clear the volume of the Marine del Gama in 26 hours (Davies et al. 1989). | |||||
WA-IV | None | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus was encrusting submerged vegetation (Stukenia pectinata, Sago Pondweed (mentioned by Davies et al. 1989). Increasing water clarity is implied, but not discussed by Davies et al. (1989). A major change is the transformation of the estuary from sand-banks to encrusted concrete walls and reefs, with an increase of infaunal biomass and abundance as well (McQuaid and Griffiths 2014). | |||||
WA-IV | None | Economic Impact | Shipping/Boating | ||
Ficopomatus enigmaticus was encrusting docks and concrete walls- a safety hazard to recreational users (Davies et al. 1989). | |||||
WA-IV | None | Economic Impact | Aesthetic | ||
Filtration by Ficopomatus improves water clarity (Davies et al. 1989). | |||||
MED-VII | None | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus formed extensive reefs in lagoons of the Po River delta, forming solid habitat for attaching organisms. The tubes break down to create gravelly, carbonaceous sediments (Bianchi and Morri 1996). In the delta of the Neretva River, dense colonies of F. enigmaticus were colonized by Musculista senhousia , Amphibalanus ebureneus, and a variety of naitve fouling organisms (Despalatovic et al. 2013). | |||||
NZ-IV | None | Economic Impact | Industry | ||
Ficopomatus enigmaticus fouled cooling systems of power plants (Read and Gordon 1991). | |||||
NZ-IV | None | Economic Impact | Shipping/Boating | ||
Ficopomatus enigmaticus fouled pleasure boats, pontoons and pilings with encrustations of tubes (Read and Gordon 1991). | |||||
MED-III | None | Ecological Impact | Competition | ||
In the Orbetello lagoon, Italy, Ficopomatus enigmaticus tubes outnumbered and outgrew those of another introduced serpulid (Hydroides dianthus), which produces thicker and stronger tubes, but with slower growth (Bianchi and Morri 2001). | |||||
P080 | Monterey Bay | Ecological Impact | Habitat Change | ||
Ficopomatus reefs are spreading in Elkhorn Slough. These reefs support higher densities of organisms than native oyster reefs and mudflats, predominantly favoring non-native species (Heiman et al. 2008; Heiman and Micheli 2010). | |||||
P090 | San Francisco Bay | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus was first noticed in Lake Merritt, San Francisco Bay, when large reefs of worm-tubes were discovered. Ecological impacts of these reefs have not been studied and the abundance of worms is now lower than in the early 20th century (Carlton 1979; Cohen and Carlton 1995). | |||||
MED-IX | None | Ecological Impact | Habitat Change | ||
'The mass populations of this species induce changes in benthic communities, offering at the same time ecological niches and substrata for various species including other fouling species' (Micu and Micu 2004, cited by Skolka and Preda 2010). | |||||
MED-IX | None | Economic Impact | Shipping/Boating | ||
'Fouling organisms, like barnacles or the polychaete Ficopomatus enigmaticus, are harmful because their biomass increases the fuel consumption of ships. Such organisms also increase the corrosion rate of metallic submerged structures.' (Skolka and Preda 2010). | |||||
NWP-3b | None | Economic Impact | Fisheries | ||
Ficopomatus enigmaticus interfered with oyster culture in Lake Hamana (Chavanich et al. 2010). | |||||
SA-I | None | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus reefs in Mar Chiquita lagoon, Argentina, provided new habitat for the crab Cyrtograpsus angulatus (Schwindt et al. 2001). Reefs also greatly increased sedimentation and decreased water circulation throughout the lagoon (Schwindt et al. 2001). There was an increased frequency of epibiotic fauna on serpulid reefs compared to bare mud areas (amphipods, crabs, snails), and the reefs provided a more frequently used feeding and resting habitat for migratory shorebirds (Bruschetti et al. 2009). Reef worms deposit large quantities of organic material as feces and pseudofeces, altering sedimentary habitats (Bruschett et al. 2011). Reef building also increased grazing by herbivores, resulting in the elimination of green algae (Ulva, etc.), while providing habitat for settlement of red algae (Polysiphonia subtilissima) (Bazterrica et al. 2011). This impact may be mutualistic. Ficopomatus colonized by P. subtilissima had increased recruitment, tube length, and body condition (Bazterrica et al. 2014). | |||||
SA-I | None | Ecological Impact | Herbivory | ||
Phytoplankton chlorophyll decreased by up to 56% near reefs in summer, due to suspension-feeding by F. enigmaticus (Bruschetti et al. 2008). Grazing rates, in Mar Chiquita and La Tigra Creek, were greatest for diatoms, resulting in dominance of the phytoplankton by picoplanton (nanochlorophytes) (Pan and Marcoval 2013). In mesocosm experiments, nutrient addicitions promoted phytplankton gorwth, but this was offset by increased biomass and grazing of F. enigmaticus (Bruschetti et al. 2018). | |||||
SA-I | None | Ecological Impact | Trophic Cascade | ||
Increased populations of the crab Cyrtograpsus angulatus resulted in increased predation and reduced abundance of infauna (Schwindt et al. 2001). Ficopomatus reefs also provided a center of concentration for two native snails (Heleobia conexa and Heleobia australis), resulting in increased prevalence of digenean trematodes (15 spp.) whose life cycle includes parasitism of shorebirds (Etcehgoin et al. 2012). | |||||
MED-III | None | Ecological Impact | Habitat Change | ||
In the Lac du Tunis, Tunisia, F. enignmaticus constructed extensive reefs on formerly bare sediments, filling in the basin and reducing circulation. Filtration increased water clarity, stimulating growth of macroalgae. Decaying macroalgae can result in hypoxic conditions (Keene 1980). | |||||
MED-III | None | Ecological Impact | Trophic Cascade | ||
Filtration by F. enigmaticus shifts biomass from the water column to the benthos. Filtration increases water clarity, stimulating growth of macroalgae (Keene 1980). | |||||
MED-II | None | Ecological Impact | Habitat Change | ||
The reefs of Ficopomatus enigmaticus are major features in the Albufera Lagoon, forming calcareous reefs 2-3 m thick. The reefs have the potential to eventually fill up the lagoon (Fornos et al. 1997). | |||||
SA-II | None | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus created reefs in Uruguayan coasta lagoons, which were considered to be an indicator of a perturbed environment (Muniz et al. 2005). Ficopomatus enigmaticus reefs attract dense populations of the introduceed amphipod Melita palmata (Bazterrica et al. 2020). | |||||
SA-II | None | Economic Impact | Industry | ||
Ficopomatus enigmaticus obstructed the cooling systems of oil refineries in Uruguay (Muniz et al. 2005). | |||||
SA-I | None | Ecological Impact | Predation | ||
In mesocosm experiments, Ficopomatus reefs in the Mar Chiquit, Argentina, did not affect overall zooplantkon biomass, but did affect community composition, especially the abundace of cladocerans (mostly Moina spp. (Bruschetti et al. 2016). | |||||
NEP-V | Northern California to Mid Channel Islands | Ecological Impact | Competition | ||
Transplant experiments indicate that competition with Ficopomatus enigmaticus may limit growth and abundance of the introduced bryozoan Conopeum chesapeakensis at the more saline end of Carquinez Strait in the San Francisco estuary (Benicia, ~21 PSU, Newcomer et al. 2018). | |||||
P090 | San Francisco Bay | Ecological Impact | Competition | ||
Transplant experiments indicate that competition with Ficopomatus enigmaticus may limit growth and abundance of the introduced bryozoan Conopeum chesapeakensis at the more saline end of Carquinez Strait in the San Francisco estuary (Benicia, ~21 PSU, Newcomer et al. 2018). | |||||
CA | California | Ecological Impact | Competition | ||
Transplant experiments indicate that competition with Ficopomatus enigmaticus may limit growth and abundance of the introduced bryozoan Conopeum chesapeakensis at the more saline end of Carquinez Strait in the San Francisco estuary (Benicia, ~21 PSU, Newcomer et al. 2018)., Transplant experiments indicate that competition with Ficopomatus enigmaticus may limit growth and abundance of the introduced bryozoan Conopeum chesapeakensis at the more saline end of Carquinez Strait in the San Francisco estuary (Benicia, ~21 PSU, Newcomer et al. 2018). | |||||
CA | California | Ecological Impact | Habitat Change | ||
Ficopomatus enigmaticus was first noticed in Lake Merritt, San Francisco Bay, when large reefs of worm-tubes were discovered. Ecological impacts of these reefs have not been studied and the abundance of worms is now lower than in the early 20th century (Carlton 1979; Cohen and Carlton 1995). Ficopomatus reefs are also spreading in Elkhorn Slough. These reefs support higher densities of organisms than native oyster reefs, predominantly non-native species (Heiman et al. 2008)., Ficopomatus reefs are spreading in Elkhorn Slough. These reefs support higher densities of organisms than native oyster reefs and mudflats, predominantly favoring non-native species (Heiman et al. 2008; Heiman and Micheli 2010)., Ficopomatus enigmaticus was first noticed in Lake Merritt, San Francisco Bay, when large reefs of worm-tubes were discovered. Ecological impacts of these reefs have not been studied and the abundance of worms is now lower than in the early 20th century (Carlton 1979; Cohen and Carlton 1995). | |||||
CAR-I | Northern Yucatan, Gulf of Mexico, Florida Straits, to Middle Eastern Florida | Economic Impact | Shipping/Boating | ||
Dense fouling and reef-like structures were observed in one marina in Galveston Bay, but not in others (Fernández-Rodríguez et al. 2023) |
|||||
G260 | Galveston Bay | Economic Impact | Shipping/Boating | ||
Dense fouling and reef-like structures were observed in one marina in Galveston Bay, but not in others (Fernández-Rodríguez et al. 2023) |
Regional Distribution Map
Bioregion | Region Name | Year | Invasion Status | Population Status |
---|---|---|---|---|
CAR-I | Northern Yucatan, Gulf of Mexico, Florida Straits, to Middle Eastern Florida | 1951 | Def | Estab |
NEP-V | Northern California to Mid Channel Islands | 1921 | Def | Estab |
NEP-VI | Pt. Conception to Southern Baja California | 2000 | Def | Estab |
NA-ET3 | Cape Cod to Cape Hatteras | 1976 | Def | Estab |
NEA-II | None | 1921 | Def | Estab |
NEA-III | None | 1939 | Def | Estab |
MED-VII | None | 1934 | Def | Estab |
B-III | None | 1953 | Def | Estab |
NEA-IV | None | 1922 | Def | Estab |
NEA-V | None | 1978 | Def | Estab |
MED-II | None | 1933 | Def | Estab |
MED-IV | None | 1978 | Def | Estab |
MED-III | None | 1927 | Def | Estab |
MED-V | None | 1937 | Def | Estab |
MED-IX | None | 1929 | Def | Estab |
CASP | Caspian Sea | 1961 | Def | Estab |
WA-IV | None | 1951 | Def | Estab |
SP-XXI | None | 1937 | Def | Estab |
AUS-VIII | None | 1975 | Crypto | Estab |
AUS-X | None | 1932 | Crypto | Estab |
AUS-IV | None | 1935 | Crypto | Estab |
AUS-VII | None | 1975 | Crypto | Estab |
SA-II | None | 1917 | Def | Estab |
NZ-IV | None | 1967 | Def | Estab |
NWP-3b | None | 1966 | Def | Estab |
NWP-2 | None | 1978 | Def | Estab |
SA-I | None | 1940 | Def | Estab |
G070 | Tampa Bay | 2002 | Def | Estab |
G260 | Galveston Bay | 2003 | Def | Estab |
G310 | Corpus Christi Bay | 1951 | Def | Estab |
P050 | San Pedro Bay | 2000 | Def | Estab |
M130 | Chesapeake Bay | 1994 | Def | Estab |
S190 | Indian River | 1979 | Def | Estab |
P080 | Monterey Bay | 1994 | Def | Estab |
P090 | San Francisco Bay | 1921 | Def | Estab |
G160 | East Mississippi Sound | 1997 | Def | Estab |
M070 | Barnegat Bay | 1976 | Def | Estab |
G300 | Aransas Bay | 1952 | Def | Estab |
S160 | St. Andrew/St. Simons Sounds | 2006 | Def | Unk |
CAR-VII | Cape Hatteras to Mid-East Florida | 2006 | Def | Estab |
P093 | _CDA_P093 (San Pablo Bay) | 1921 | Def | Estab |
MED-VIII | None | 1952 | Def | Estab |
MED-VI | None | 1976 | Def | Estab |
CIO-II | None | 2004 | Crypto | Estab |
WA-I | None | 1978 | Def | Estab |
NWP-4a | None | 2000 | Def | Estab |
S080 | Charleston Harbor | 2004 | Def | Estab |
MED-X | None | 1961 | Def | Estab |
RS-3 | None | 1973 | Def | Estab |
WA-V | None | 1975 | Def | Estab |
NWP-4b | None | 0 | Def | Estab |
P040 | Newport Bay | 2011 | Def | Estab |
P065 | _CDA_P065 (Santa Barbara Channel) | 2008 | Def | Estab |
AUS-XI | None | 0 | Crypto | Estab |
NEA-VI | None | 2016 | Def | Estab |
P076 | _CDA_P076 (Carmel) | 2001 | Def | Estab |
P064 | _CDA_P064 (Ventura) | 2013 | Def | Estab |
P020 | San Diego Bay | 2013 | Def | Unk |
NEA-VI | None | 2016 | Def | Estab |
P060 | Santa Monica Bay | 2015 | Def | Estab |
MED-V | None | 2018 | Def | Estab |
B-IV | None | 2020 | Def | Estab |
Occurrence Map
OCC_ID | Author | Year | Date | Locality | Status | Latitude | Longitude |
---|---|---|---|---|---|---|---|
2720 | Hoagland and Turner 1980 | 1976 | 1976-01-01 | Oyster Creek (Barnegat Bay) | Def | 39.4092 | -74.6632 |
2721 | Hoagland and Turner 1980 | 1976 | 1976-01-01 | Forked River (Barnegat Bay) | Def | 39.8397 | -74.1606 |
2722 | Ruiz et al. unpublished data | 1994 | 1994-01-01 | Scott Creek (Elizabeth River) | Def | 36.8511 | -76.3083 |
2736 | Hartman 1951 | 1951 | 1951-01-01 | Corpus Christi Bay | Def | 27.7719 | -97.2525 |
2737 | Ruiz et al. unpublished data | 2002 | 2002-09-17 | Marina Landing Resort, Galveston | Def | 29.2756 | -94.8481 |
2738 | Ruiz et al. unpublished data | 2002 | 2002-09-16 | Payco Marina, Galveston | Def | 29.2871 | -94.8733 |
2739 | Ruiz et al. unpublished data | 2002 | 2002-09-19 | Port of Texas City | Def | 29.3728 | -94.8907 |
2740 | Ruiz et al. unpublished data | 2002 | 2002-09-17 | West Bay Marina, | Def | 29.1455 | -95.0472 |
2741 | Ruiz et al. unpublished data | 2002 | 2002-07-30 | Mariner's Club, Tampa area | Def | 27.7272 | -82.4748 |
2742 | USNMNH catalogue # 186522, ID by Thomas Perkins | 1997 | 1997-11-11 | Mississippi Sound | Def | 30.3958 | -88.8853 |
2745 | Carlton 1979 | 1954 | 1954-01-01 | Berkeley Aquatic Park Lagoon | Def | 37.8318 | -122.3603 |
2746 | Carlton 1979 | 1971 | 1971-01-01 | Alameda Lagoon | Def | 37.7652 | -122.2416 |
2747 | Carlton 1979 | 1970 | 1970-01-01 | San Rafael Creek | Def | 37.9672 | -122.4853 |
2754 | Ruiz et al. unpublished | 2000 | 2000-09-09 | Port of Richmond | Def | 37.5121 | -122.2108 |
2755 | Ruiz et al. unpublished | 2001 | 2001-09-21 | Port of Redwood | Def | 37.9090 | -122.3878 |
2799 | Straughan 1969 | 1947 | 1947-01-01 | Alai Wai Canal | Def | 20.4306 | -156.3742 |
2800 | Straughan 1969 | 1943 | 1943-01-01 | Kewalo Basin | Def | 21.2961 | -157.8603 |
2801 | Straughan 1969 | 1937 | 1937-01-01 | Pearl Harbor | Def | 21.3550 | -157.9722 |
7230 | Ruiz et al. unpublished data | 1994 | 1994-01-01 | Baltimore Harbor | Def | 39.2903 | -76.6125 |
7231 | Ruiz et al. unpublished data | 1994 | 1994-01-01 | Severn River | Def | 38.9583 | -76.4456 |
7232 | Ruiz et al., unpublished data | 2001 | 2001-09-01 | Belle Isle Marina | Def | 37.0964 | -76.2920 |
7233 | Ruiz et al., unpublished data | 2001 | 2001-09-01 | Lynhaven Bay Pt. | Def | 37.1542 | -76.3800 |
7234 | Ruiz et al., unpublished data | 2004 | 2004-01-01 | Charleston | Def | 32.7638 | -79.8973 |
7236 | Harbor Branch Oceanographic Institiution | 1979 | 1979-01-01 | Merritt Island | Def | 28.2197 | -80.6448 |
26664 | Wasson et al, 2001 (Elkhorn Slough Survey) | 1998 | 1998-03-01 | Elkhorn Slough Station 9 | Def | 36.8398 | -121.7435 |
26830 | Foss 2009 | 2005 | 2005-11-14 | California Maritime Academy/Vallejo | Def | 38.0661 | -122.2299 |
27478 | Carlton 1979; Cohen and Carlton, 1995 | 1969 | 1969-01-01 | Berkeley Marina, San Francisco Bay | Def | 37.8664 | -122.3150 |
27511 | Carlton 1979; Cohen and Carlton, 1995 | 1974 | 1974-01-01 | Palo Alto, San Francisco Bay | Def | 37.4584 | -122.1052 |
27557 | Wasson et al, 2001 (Elkhorn Slough Survey) | 1998 | 1998-03-01 | Elkhorn Slough Station 10 | Def | 36.8578 | -121.7572 |
27864 | Foss 2011 | 2010 | 2010-07-01 | Loch Lomond Marina Area | Def | 37.9720 | -122.4832 |
27952 | Wasson et al, 2001 (Elkhorn Slough Survey) | 1998 | 1998-03-01 | Elkhorn Slough Station 1 | Def | 36.7908 | -121.7906 |
27966 | California Department of Fish and Wildlife 2011 | 2011 | 2011-06-21 | B-Dock | Def | 36.8027 | -121.7851 |
28508 | Carlton 1979; Cohen and Carlton, 1995 | 1970 | 1970-01-01 | Corte Madera Creek, San Francisco Bay | Def | 37.9426 | -122.5081 |
28568 | Foss 2009 | 2005 | 2005-11-15 | Petaluma River Turning Basin | Def | 38.2344 | -122.6354 |
28573 | Carlton 1979; Cohen and Carlton, 1995 | 1979 | 1979-01-01 | Belvedere Lagoon, San Francisco Bay | Def | 37.8787 | -122.4666 |
32807 | California Department of Fish and Wildlife 2011 | 2011 | 2011-04-19 | Back Bay Marina | Def | 33.6194 | -117.8933 |
35687 | Pernet et al. 2016 | 2008 | 2008-01-01 | Mission Creek Lagoon | Def | 34.4126 | -119.6882 |
35688 | Pernet et al. 20162015 | None | 2015-10-01 | Arroyo Burro Creek | Def | 34.4034 | -119.7432 |
35689 | Pernet et al. 2015 | 2015 | 2015-10-01 | Anaheim-Shoreline Bridges, Los Angeles River | Def | 33.7792 | -118.2047 |
35690 | Pernet et al. 2016 | 2015 | 2015-10-01 | Long Beach Shoreline Marina Jetty | Def | 33.7581 | -118.1899 |
767813 | Ruiz et al., 2015 | 2011 | 2012-09-20 | San Leandro Marina, San Francisco Bay, CA, California, USA | Def | 37.6979 | -122.1912 |
767845 | Ruiz et al., 2015 | 2011 | 2011-09-16 | Loch Lomond Marina, San Francisco Bay, CA, California, USA | Def | 37.9724 | -122.4796 |
767862 | Ruiz et al., 2015 | 2011 | 2011-09-27 | Petaluma Marina, San Francisco Bay, CA, California, USA | Def | 38.2304 | -122.6136 |
767869 | Ruiz et al., 2015 | 2011 | 2011-09-13 | Redwood City Marina, San Francisco Bay, CA, California, USA | Def | 37.8046 | -122.3985 |
767898 | Ruiz et al., 2015 | 2011 | 2011-09-27 | Vallejo Marina, San Francisco Bay, CA, California, USA | Def | 38.1086 | -122.2694 |
767944 | Ruiz et al., 2015 | 2011 | 2011-09-28 | Glen Cove Marina, San Francisco Bay, CA, California, USA | Def | 38.0663 | -122.2130 |
767959 | Ruiz et al., 2015 | 2011 | 2011-09-28 | Benicia Marina, San Francisco Bay, CA, California, USA | Def | 38.0453 | -122.1561 |
767966 | Ruiz et al., 2015 | 2011 | 2011-09-12 | Corinthian Yacht Club, San Francisco Bay, CA, California, USA | Def | 37.8103 | -122.3228 |
768128 | Ruiz et al., 2015 | 2012 | 2012-09-04 | Redwood City Marina, San Francisco Bay, CA, California, USA | Def | 37.5023 | -122.2130 |
768151 | Ruiz et al., 2015 | 2012 | 2012-09-06 | Loch Lomond Marina, San Francisco Bay, CA, California, USA | Def | 37.9736 | -122.4802 |
768209 | Ruiz et al., 2015 | 2012 | 2012-08-31 | Glen Cove Marina, San Francisco Bay, CA, California, USA | Def | 38.0663 | -122.2130 |
768231 | Ruiz et al., 2015 | 2012 | 2012-09-13 | San Leandro Marina, San Francisco Bay, CA, California, USA | Def | 37.6962 | -122.1919 |
768334 | Ruiz et al., 2015 | 2013 | 2013-08-23 | Loch Lomond Marina, San Francisco Bay, CA, California, USA | Def | 37.9723 | -122.4829 |
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