Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea)
Little information is available regarding predator-prey interactions in High-Antarctic coastal systems. In this study, the predation of Trematomus bernacchii (Pisces: Nototheniidae) on Adamussium colbecki (Mollusca: Pectinidae) is described and the related impact on the population structure of the m...
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ftunivgenova:oai:iris.unige.it:11567/247702 2023-11-12T04:08:21+01:00 Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) VACCHI M. M. DALU' CATTANEO VIETTI, RICCARDO CHIANTORE, MARIACHIARA Vacchi, M. CATTANEO VIETTI, Riccardo Chiantore, Mariachiara M., Dalu' 2000 STAMPA http://hdl.handle.net/11567/247702 eng eng volume:12 (1) firstpage:64 lastpage:68 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11567/247702 predator-prey fish bivalve predation impact prey size info:eu-repo/semantics/article 2000 ftunivgenova 2023-10-18T20:47:42Z Little information is available regarding predator-prey interactions in High-Antarctic coastal systems. In this study, the predation of Trematomus bernacchii (Pisces: Nototheniidae) on Adamussium colbecki (Mollusca: Pectinidae) is described and the related impact on the population structure of the mollusc is hypothesized. Fishes and scallops were collected during several expeditions between 1990/9 1 and 1997/98 summers, in nearshore waters at Terra Nova Bay (Antarctica). Adamussium colbecki was the main food item of i? bernacchii and an ontogenetic prey-size selection was observed. The predation was mainly on medium size classes of the scallop. These were lacking in the A. colbecki population sampled in the same period suggesting that the impact of fish-feeding on the size structure of the natural population of the mollusc may be substantial. Two size classes of the Adamussium population were not preyed on. Large adults avoid predation either because of the limits for mouth gape in the fish or by swimming avoidance capability, while smaller scallops may not be preyed upon because they are attached through byssus threads to very mobile large adults. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Università degli Studi di Genova: CINECA IRIS Antarctic Ross Sea Terra Nova Bay |
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Open Polar |
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Università degli Studi di Genova: CINECA IRIS |
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ftunivgenova |
language |
English |
topic |
predator-prey fish bivalve predation impact prey size |
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predator-prey fish bivalve predation impact prey size VACCHI M. M. DALU' CATTANEO VIETTI, RICCARDO CHIANTORE, MARIACHIARA Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
topic_facet |
predator-prey fish bivalve predation impact prey size |
description |
Little information is available regarding predator-prey interactions in High-Antarctic coastal systems. In this study, the predation of Trematomus bernacchii (Pisces: Nototheniidae) on Adamussium colbecki (Mollusca: Pectinidae) is described and the related impact on the population structure of the mollusc is hypothesized. Fishes and scallops were collected during several expeditions between 1990/9 1 and 1997/98 summers, in nearshore waters at Terra Nova Bay (Antarctica). Adamussium colbecki was the main food item of i? bernacchii and an ontogenetic prey-size selection was observed. The predation was mainly on medium size classes of the scallop. These were lacking in the A. colbecki population sampled in the same period suggesting that the impact of fish-feeding on the size structure of the natural population of the mollusc may be substantial. Two size classes of the Adamussium population were not preyed on. Large adults avoid predation either because of the limits for mouth gape in the fish or by swimming avoidance capability, while smaller scallops may not be preyed upon because they are attached through byssus threads to very mobile large adults. |
author2 |
Vacchi, M. CATTANEO VIETTI, Riccardo Chiantore, Mariachiara M., Dalu' |
format |
Article in Journal/Newspaper |
author |
VACCHI M. M. DALU' CATTANEO VIETTI, RICCARDO CHIANTORE, MARIACHIARA |
author_facet |
VACCHI M. M. DALU' CATTANEO VIETTI, RICCARDO CHIANTORE, MARIACHIARA |
author_sort |
VACCHI M. |
title |
Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
title_short |
Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
title_full |
Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
title_fullStr |
Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
title_full_unstemmed |
Predator-prey relationship between nototheniid fish Trematomus bernacchii and Antarctic scallop Adamussium colbecki at Terra Nova Bay (Ross Sea) |
title_sort |
predator-prey relationship between nototheniid fish trematomus bernacchii and antarctic scallop adamussium colbecki at terra nova bay (ross sea) |
publishDate |
2000 |
url |
http://hdl.handle.net/11567/247702 |
geographic |
Antarctic Ross Sea Terra Nova Bay |
geographic_facet |
Antarctic Ross Sea Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea |
op_relation |
volume:12 (1) firstpage:64 lastpage:68 journal:ANTARCTIC SCIENCE http://hdl.handle.net/11567/247702 |
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1782328665399361536 |