Invasion
Invasion Description
1st Record: Patagonia/Argentina/Gulfo Nuevo (42 46.8 S; 64 59.46W) (Casas et al. 2004)
Geographic Extent
Puerto Madryn/Argentina/Atlantic Ocean (Schwindt et al. 2014; Schwindt et al. 2020); Patagonia/Argentina/Gulfo Nuevo (42 46.8 S; 64 59.46W) (1992, Casas et al. 2004); Patagonia/Argentina/Gulfo Nuevo (42 46.8 S; 64 59.46W) (Casas et al. 2004); Las Charas, Ambrosetti, Casino, Valdes Penisula/Argentina/San Jose and Nuevo Gulfs (2008, Raffo et al. 2014); Patagonia/Argentina/Cracker Bay (Raffo et al. 2009, 42 8560S, 64 8270W); Patagonia/Argentina/Rio Deseado (47 45 S; 65 55 W ) (2001, Martin and Cuevas 2006); Mar del Plata/Argentina/Mar del Plata Harbour (9/2011, Meretta et al. 2012, 38º02'00 S, 57º31'30 W); Puerto Madryn/Argentina/Gulfo Nuevo (Pereyra et al. 2014, PC; 41°41.689´S; 65° 01.412´W); Patagonia, Argentina/mouth of Salado stream, San Mattias Gulf (Pereyra et al. 2014, 41°36.877´S; 65°01.236´W);
Vectors
| Level | Vector |
|---|---|
| Alternate | Fisheries Accidental (not Oyster) |
| Alternate | Ballast Water |
Regional Impacts
| Ecological Impact | Competition | |
| In Gutto, Gulfo Nuevo, Patagonia, the invasion of U. pinnatifida decreased diversity of native seaweeds (Casas et al. 2004). However, Raffo et al. (2009) did not find evidence of competition between native Macrocystis pyrifera and U. pinnatifida, when examining growth and density of the two species in Cracker Bay, Patagonia. This could be due to examining an earlier phase of invasion, however (Raffo et al. 2009). Undaria pinnatifida in Patagonia frequently settles on Styela clava, and potentially could interfere with the growth of the tunicate. However, this has not been experimentally studied (Pereyra et al. 2017). | ||
| Ecological Impact | Habitat Change | |
| The diversity of fauna associated with the holdfast of U. pinnatifida was decreased, compared to that of the native kelp Macrocystis pyrifera, in Cracker Bay, Patagonia (Raffo et al. 2009). In reef areas off northern Patagonia, reefs with a low degree of relief, which were invaded by Undaria, had a low diversity of fishes compared to similar uninvaded reefs. Reefs with higher relief were not noticeably affected by the Undaria invasion, because Undaria tended to colonize only the lower portions of the reefs, leaving many refuge areas unaltered (Irigoyen et al. 2011a). Experimental plots covered by Undaria had higher algal biodiversity, and abundance of several invertebrates than sites from which Undaria was removed (Irigoyen et al. 2011b). Exudates of Undaria affect the optical properties of seawater and stimulate microbia growth (Lozada et al. 2021). | ||
| Ecological Impact | Food/Prey | |
| In Puerto Madryn, Patagonia, experimental studies found that the sea urchins Arbacia dufresnii and Pseudechinus magellanicus grazed lightly on Undaria pinnatifida, while the gastropod Tegula patagonica fed on the kelp's epibiota. However, P. magellanicus was not seen feeding on this kelp in the field (Teso et al. 2009). | ||
References
Casas, Graciela; Scrosati, Ricardo; Piriz, Maria Luz (2004) The invasive kelp Undaria pinnatifida (Phaeophyceae, Laminariales) reduces native seaweed diversity in Nuevo Gulf (Patagonia, Argentina)., Biological Invasions 6: 411-416Irigoyen, Alejo J.; Eyras, Cecilia; Parma, Ana M. (2011) Alien algae Undaria pinnatifida causes habitat loss for rocky reef fishes in north Patagonia, Biological Bulletin 13: 17-24
Irigoyen, Alejo J.; Trobbiani, Gaston; Sgarlatta, Maria P.; Raffo, Maria P. (2011) Effects of the alien algae Undaria pinnatifida (Phaeophyceae, Laminariales) on the diversity and abundance of benthic macrofauna in Golfo Nuevo (Patagonia, Argentina): potential implications for local food webs, Biological Invasions 13: 1521-1532
2017 Entomological Society of America Proposal Form for new Common Name or Change of ESA-Approved Common Name (Roseau Cane Scale, Nipponaclerda biwakoensis, Roseau Cane Scale). Proposa for name change
Martin, Juan Pablo; Cuevas, Juan Martin (2006) First record of Undaria pinnatifida (Laminariales, Phaeophyta) in Southern Patagonia, Argentina., Biological Invasions 8: 1399-1402
Meretta, Pablo Ezequiel; Matula, Carolina Verónica; Casas, Graciela (2012) Occurrence of the alien kelp Undaria pinnatifida (Laminariales, Phaeophyceae) in Mar del Plata, Argentina, Bioinvasion Records 1: in press
Orensanz, Jose Maria and 14 other authors (2002) No longer the pristine confines of the world ocean: a survey of exotic marine species in the southwestern Atlantic, Biological Invasions 4(1-2): 115-143
Pereyra, Patricio J.; Arias, Magdalena; Gonzalez, Raúl; Narvarte, Maite (2014) Moving forward: the Japanese kelp Undaria pinnatifida (Harvey) Suringar, 1873 expands in northern Patagonia, Argentina, Bioinvasions Records 3: in press
Pereyra, Patricio Javier; Narvarte, Maite; Tatián, Marcos; González, Raúl (2015) The simultaneous introduction of the tunicate Styela clava (Herdman, 1881) and the macroalga Undaria pinnatifida (Harvey) Suringar, 1873, in northern Patagonia, BioInvasions Records 4: In press
Raffo, María P.; Lo Russo, Virginia; Schwindt, Evangelina (2014) Introduced and native species on rocky shore macroalgal assemblages: Zonation patterns, composition and diversity, Aquatic Botany 112: 57-65
Schwindt, Evangelina and 15 authors (2014) Marine fouling invasions in ports of Patagonia (Argentina) with implications for legislation and monitoring programs, Marine Environmental Research 99: 60-68