Abstract
Caprella scaura (Templeton in Trans Entomol Soc Lond 1:185–198, 1836) is a native species to the western Indian Ocean. It was first described from Mauritius and later reported from several regions of the world. During the last decade, the species spread out of the Adriatic Sea, and in 2005, C. scaura was reported in Gerona, on the north-eastern coast of Spain. The present study shows the recent rapid expansion of the species to the East Atlantic. During a sampling survey of harbours along the Strait of Gibraltar (Dec 2009–June 2010), we found high densities of C. scaura associated with the bryozoans Zoobotryon verticillatum Della Chiaje, 1822, in Chipiona and Bugula neritina (L.) in Cádiz, Atlantic coast of southern Spain; on the other hand, during May 2009, an important population of C. scaura was also found in the Canary Islands (Tenerife) associated with aquaculture resources. A total of 1,034 individuals of C. scaura were studied, and we confirm that the populations are effectively established, with high densities and reproducing females during the whole year. The population from Cádiz was characterised by smaller specimens but a higher number of eggs per female. These differences could be related to environmental conditions, mainly sea water temperature and to other factors such as competition with other species, or availability of food or substrate. Significant correlation was found between female size and number of eggs in the three populations, but egg size did not vary with female body length. The morphometric relation length/width of the second gnathopod was also calculated and compared between sexes: larger males presented longer gnathopods at the three sites. The most probable introduction vector of this species is shipping; in fact, the Strait of Gibraltar is characterised by an intense shipping traffic. Also, we have observed that the native Caprella equilibra Say, 1818, is being displaced by C. scaura in the harbour of Cádiz, where this species reach densities of 35,945 ind/1,000 g of B. neritina. Further experimental studies are necessary to explore the potential danger of this species, which might spread into natural habitats too.
References
Aoki M (1999) Morphological characteristics of young, maternal care behaviour and microhabitat used by caprellid amphipods. J Mar Biol Assoc UK 79:629–638
Arimoto I (1976) Taxonomic studies of caprellids (Crustacea, Amphipoda, Caprellidea) found in the Japanese and adjacent waters. Special Publications from the Seto Marine Biological Laboratory, Series 3:1–299
Ashton GV, Stevens MI, Hart MC, Green DHm, Burrows MT, Cook EJ, Willis KJ (2008) Mitochondrial DNA reveals multiple Northern Hemisphere introductions of Caprella mutica (Crustacea, Amphipoda). Mol Ecol 17:1293–1303
Astudillo JC, Bravo M, Dumont CP, Thiel M (2009) Detached aquaculture buoys in the SE Pacific: potential dispersal vehicles for associated organisms. Aquat Biol 5:219–231
Bulleri F, Airoldi L (2005) Artificial marine structures facilitate the spread of a non-indigenous green alga, Codium fragile ssp tomentosoides, in the North Adriatic Sea. J Appl Ecol 42:1063–1072
Bulleri F, Chapman MG (2010) The introduction of coastal infrastructure as a driver of change in marine environments. J Appl Ecol 47:26–35
Coles SL, De Felice RC, Eldredge LG (1999) Non indigenous marine species introductions in the harbours of the south and west shores of Oahu, Hawaii. Bishop Museum Technical Report no. 15, p 212
Elliott M (2003) Biological pollutants and biological pollution–an increasing cause for concer. Mar Pollut Bull 46:275–280
Floerl O, Inglis GJ (2003) Boat harbour design can exacerbate hull fouling. Aust Ecol 28:116–127
Foster JM, Heard RW, Knott DM (2004) Northern range extensions from Caprella scaura Templeton, 1836 (Crustacea: Amphipoda: Caprellidae) on the Florida Gulf Coast and in South Carolina. Gulf Carib Res 16:65–69
Glasby M, Connel SD, Holloway MG, Hewitt CL (2006) Non indigenous biota on artificial structures: could habitat creation facilitate biological invasions? Mar Biol 151:887–895
Guerra-García JM (2003) The Caprellidea (Crustacea: Amphipoda) from Mauritius Island, Western Indian Ocean. Zootaxa 232:1–24
Guerra-García JM (2004) The caprellidea (Crustacea: Amphipoda) from Western Australia and Northern Territory, Australia. Hydrobiologia 522:1–74
Guerra-García JM, Takeuchi I (2003) The caprellidea (Malacostraca: Amphipoda) from Mirs Bay, Hong Kong, with the description of a new genus and two new species. J Crust Biol 23:154–168
Guerra-García JM, Takeuchi I (2004) The Caprellidea (Crustacea: Amphipoda) from Tasmania. J Nat Hist 38:967–1044
Guerra-García JM, Thiel M (2001) The caprellid fauna (Crustacea: Amphipoda: Caprellidea) from Coquimbo, northern-central Chile with a taxonomic key for species identification. Rev Chil Hist Nat 74:873–883
Guerra-García JM, Tierno de Figueroa JM (2009) What do caprellids feed on? Mar Biol 156:1881–1890
Hayes KR, Sliwa C (2003) Identifying potential marine pests: a deductive approach applied to Australia. Mar Pollut Bull 46:91–98
Ito A, Aoki M, Yokobori S-I, Wada H (2010) The complete mitochondrial genome of Caprella scaura (Crustacea, Amphipoda, Caprellidea), with emphasis on the unique gene order pattern and duplicated control region. Mitochondrial DNA 21:183–190
Keith DE (1971) Substrate selection in caprellid amphipods of Southern California with emphasis on Caprella californica Stimpson and Caprella equilibra Say (Amphipoda). Pacific Sci 25:387–394
Krapp T, Lang C, Libertini A, Melzer RR (2006) Caprella scaura Templeton 1836 sensu lato (Amphipoda: Caprellidae) in the Mediterranean. Org Div Evol 6:77–81
Laubitz DR (1991) Crustacea Amphipoda Caprellidea: caprellids from the western Pacific (New Caledonia, Indonesia and the Philippines). In: Crosnier A (Ed) Résultats des Campagnes MUSORSTOM. Mémoires du Museum National d’Histoire Naturelle, Paris (Serie A) Zoologice 9:101–123
Laubitz DR (1995) Caprellidea (Crustacea: Amphipoda) from the southern and western Indian Ocean. Mésogée 54:81–100
Lim STA, Alexander CG (1986) Reproductive behaviour of the caprellid amphipod Caprella scaura typica Mayer, 1890. Mar Behav Phys 12:217–230
Martínez J, Adarraga I (2008) First record of invasive caprellid Caprella scaura Templeton, 1836 sensu lato (Crustacea: Amphipoda: Caprellidae) from the Iberian Peninsula. Aquat Invasions 3:165–171
McCain (1968) The Caprellidae (Crustacea: Amphipoda) of the Western North Atlantic. US Nat Mus Bull 278:1–147
McCain JC, Steinberg JE (1970) Amphipoda-I, Caprellidea-I, Family Caprellidae. In: Gruner HE, Holthuis LB (eds) Crustaceorum Catalogus, Part 2. Dr. W. Junk N.V, Den Haag, pp 1–78
Montelli L (2010) The recent geographical expansion of Caprella californica (Caprellidea: Caprellidae) around the coastline of Australia. Biol Invasions 12:725–728
Ren X, Zhang CH (1996) Fouling Amphipoda (Crustacea) from Dayawan, Guangdong province, China (South China sea). Institute of Oceanology, China Academy of Sciences 1: 58–78
Ruiz GM, Fofonoff PW, Carlton JT, Wonham MJ, Hines AH (2000) Invasion of costal marine communities in North America: apparent patterns, processes and biases. Annu Rev Ecol Syst 31:481–531
Savini D, Marchini A, Forni G, Castellazzi M (2006) Touristic harbours and secondary spread of alien species. Biol Mar Mediterr 13:760–763
Schulz MK, Alexander CG (2001) Aggressive behaviour of Caprella scaura typical Mayer, 1890 (Crustacea: Amphipoda). Mar Fresh Behav Physiol 34:181–187
Sconfietti R, Mangili F, Savini D, Occhipinti-Ambrogi A (2005) Diffusion of the alien species Caprella scaura Templeton, 1836 (Amphipoda: Caprellidae) in the Northern Adriatic Sea. Biol Mar Mediterr 12:335–337
Serejo CS (1998) Gammaridean and caprellidean fauna (Crustacea) associated with the sponge Dysidea fragilis Johnston at Arraial de Cabo, Rio de Janeiro, Brazil. Bull Mar Sci 63:363–385
Silva JSV, Frenandes FC, Souza RCCL, Larsen KTS, Danelon OM (2004) Água de Lastro e Bioinvasão. Editora Interciência, Rio de Janeiro, p 270
Somaio Neves C, Moreira Rocha R, Bettini Pitombo F, Roper JJ (2007) Use of artificial substrata by introduced and cryptogenic marine species in Paranaguá Bay, southern Brazil. Biofouling 23:319–330
Takeuchi I, Hino A (1997) Community structure of caprellid amphipods (Crustacea) on seagrasses in Otsuchi Bay, northeastern Japan, with reference to the association of Caprella japonica (Schurin) and Phyllospadix iwatensis Makino. Fisheries Sci 63:327–331
Templeton R (1836) Descriptions of some undescribed exotic Crustacea. Trans Entomol Soc London 1:185–198
Thiel M, Guerra-García JM, Lancellotti DA, Vásquez N (2003) The distribution of littoral caprellids (Crustacea: Amphipoda: Caprellidea) along the Pacific coast of continental Chile. Rev Chil Hist Nat 76:203–218
Acknowledgments
Financial support of this work was provided by the Ministerio de Educación y Ciencia (Project CGL2007-60044/BOS) co-financed by FEDER funds and by the Consejería de Innovación, Ciencia y Empresa, Junta de Andalucía (Project P07-RNM-02524). Special thanks to Juana Rosa Cejas Pulido, Departamento de Cultivos Marinos del IEO, Tenerife, who alerted us of the presence of C. scaura in her aquaculture resources. David James Harris conducted the English revision of the text. We are also grateful to two anonymous referees for valuable comments to improve the manuscript.
Author information
Authors and Affiliations
Corresponding author
Additional information
Communicated by F. Bulleri.
Rights and permissions
About this article
Cite this article
Guerra-García, J.M., Ros, M., Dugo-Cota, A. et al. Geographical expansion of the invader Caprella scaura (Crustacea: Amphipoda: Caprellidae) to the East Atlantic coast. Mar Biol 158, 2617–2622 (2011). https://doi.org/10.1007/s00227-011-1754-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00227-011-1754-z