Midtrophic fish feeding modes at the poles: an ecomorphological comparison of polar cod (Boreogadus saida) and Antarctic silverfish (Pleuragramma antarctica)
نویسندگان
چکیده
منابع مشابه
Diet and trophic niche of Antarctic silverfish Pleuragramma antarcticum in the Ross Sea, Antarctica.
The diet of Antarctic silverfish Pleuragramma antarcticum was evaluated by examining stomach contents of specimens collected in the Ross Sea (71°-77° S; 165°-180° E) in January to March 2008. Pleuragramma antarcticum (50-236 mm standard length, L(S)) and prey items were analysed for stable-isotopic composition of carbon and nitrogen. According to index of relative importance (I(RI) ), which inc...
متن کاملAcclimation potential of Arctic cod (Boreogadus saida) from the rapidly warming Arctic Ocean.
As a consequence of the growing concern about warming of the Arctic Ocean, this study quantified the thermal acclimation responses of Boreogadus saida, a key Arctic food web fish. Physiological rates for cardio-respiratory functions as well as critical maximum temperature (Tc,max) for loss of equilibrium (LOE) were measured. The transition temperatures for these events (LOE, the rate of oxygen ...
متن کاملLaboratory rearing of wild Arctic cod Boreogadus saida from egg to adulthood.
The techniques and protocols used to successfully capture, transport and breed Arctic cod Boreogadus saida, as well as to rear their larvae through to adulthood are summarized. Breeding B. saida will increase the opportunity to study this fish species, which is a critical part of the Arctic food web.
متن کاملSummer foraging behaviour of shallow-diving seabirds and distribution of their prey, Arctic cod (Boreogadus saida), in the Canadian Arctic
Productive areas in the Canadian Arctic seasonally provide top predators with accessible and often predictable sources of energy. Arctic cod (Boreogadus saida) aggregate in shallow bays during the summer and are exploited by seabirds and marine mammals. Information concerning how prey is presented to predatory seabirds, and the cues seabirds use to optimize foraging potential, is limited. Hydro...
متن کاملAntarctic silverfish: life strategies of a key species in the highAntarctic ecosystem
Introduction 242 Biology of the Antarctic silverfish 243 Pleuragramma and the neutrally buoyant clade of nototheniids 243 The evolution of the neutrally buoyant clade and the Antarctic silverfish 243 Paedomorphy and the pelagic lifestyle of the Antarctic silverfish 244 Body morphology 244 Depth and geographic distribution 244 Early life history 245 Reproduction 246 Age, growth and mortality 247...
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ژورنال
عنوان ژورنال: Polar Biology
سال: 2021
ISSN: 0722-4060,1432-2056
DOI: 10.1007/s00300-021-02900-w