Scyphozoa and Cubozoa from southwestern Atlantic and Subantarctic region

Agustin Schiariti

Submited: 2017-11-09 12:39:59 | Published: 2018-05-29 18:21:58

DOI: https://doi.org/10.3856/vol46-issue2-fulltext-1

Abstract


A report of the species composition and spatial distribution of Scypho- and Cubomedusae from the Southwest Atlantic and Sub-Antarctic region is presented. Available knowledge of life history traits of these species is also reviewed. We gathered the literature records and present new information collected from oceanographic and fishery surveys carried out between 1981 and 2017 encompassing an area of approximately 1 million km2 (32-60°S; 34-70°W). The main goal of those surveys was to collect data for fish stock assessment. However, the bycatch of non-targeted species provided the opportunity to assemble information about macromedusae over the broadest spatial scale ever studied in the region. We confirmed the occurrence of 15 scyphozoans and 1 cubozoan species previously reported in the region. Lychnorhiza lucerna and Chrysaora lactea were the most numerous species, reaching the highest abundances/biomasses during summer/autumn period. Desmonema gaudichaudi, Chrysaora plocamia and Periphylla periphylla were frequently observed in low abundances, reaching high numbers only occasionally. Phacellophora camtschatica, Aurelia sp., Drymonema gorgo, Atolla chuni, Stygiomedusa gigantea and Pelagia cf. noctiluca were observed always in low numbers. Atolla wyvillei, Stomolophus meleagris, Desmonema comatum and Tamoya haplonema were reported just a few times and mostly individually. Although new species/reports can be found as surveys are undertaken, these results are considered to be reliable baseline for further ecological studies seeking to understand the ecological role that these jellyfish play in marine ecosystems.

 


Schiariti A. Scyphozoa and Cubozoa from southwestern Atlantic and Subantarctic region. Lat. Am. J. Aquat. Res.. 2018;46(2). Available from: doi:10.3856/vol46-issue2-fulltext-1 [Accessed 20 Jan. 2019].
Schiariti, A. (2018). Scyphozoa and Cubozoa from southwestern Atlantic and Subantarctic region. Latin American Journal of Aquatic Research, 46(2). doi:http://dx.doi.org/10.3856/vol46-issue2-fulltext-1