Antarctic Peninsula. Correspondence

• Main Authors: Ricardo Casaux, Esteban Barrera-oro, Laboratorio De
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: notothenioid fish; Antarctic; Antarctic Peninsula; Danco; Danco Coast; South Orkney Islands; South Shetland Islands; The Antarctic; Antarc*; Euphausia superba; Notothenia rossii
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.638.3766; http://www.polarresearch.net/index.php/polar/article/download/21319/pdf_1/

We carried out a dietary overlap analysis between notothenioid species by examining the stomach contents of more than 900 specimens collected in a fish assemblage at the Danco Coast, western Antarctic Peninsula, in the summer of 2000. Prey reoccurrences among fish species were 32.2%, with krill Euphausia superba, salps and the gammaridean Prostebeingia longicornis the most reoccurring prey. The diet similarity between species pairs was lower than 55%, in accordance with similar fish assemblages in the South Orkney Islands, the South Shetland Islands and the Antarctic Peninsula. Whereas at those localities the higher prey overlap was between krill-feeding fish species, at the Danco Coast it was between Trematomus bernacchii and Lepidonotothen nudifrons, Notothenia coriiceps and Notothenia rossii, Notothenia coriiceps and Parachaenichthyis charcoti, and Trematomus newnesi and Notothenia rossii, which shared primarily gammaridean amphipods, algae, fish and krill, respectively. Krill is normally the main prey of fish in summer in inshore waters of the western Antarctic