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• W2028551418 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 356:239-250 (2008) - DOI: https://doi.org/10.3354/meps07286 Endothermy, ectothermy and the global structure of marine vertebrate communities David K. Cairns1,*, Anthony J. Gaston2, Falk Huettmann3 1Department of Fisheries and Oceans, PO Box 1236, Charlottetown, Prince Edward Island C1A 7M8, Canada 2Environment Canada, National Wildlife Research Centre, Ottawa, Ontario K1A 0H3, Canada 3Biology and Wildlife Department, Institute of Arctic Biology, EWHALE Lab, University of Alaska, Fairbanks, Alaska 99775-7000, USA *Email: cairnsd@dfo-mpo.gc.ca ABSTRACT: Birds and mammals are the leading marine predators at high latitudes, while sharks and other large fish occupy top positions in tropical waters. The present study proposes that temperature-dependent predation success (TPS) explains global patterns of marine vertebrate community structure. Burst speed increases with temperature in ectotherms but is independent of temperature in endotherms. If capture success depends on relative swimming speeds of predator and prey, ectothermic prey will be more vulnerable to attack by endothermic predators at low temperatures. Conversely, high temperatures should enhance the ability of ectothermic predators to prey on endotherms. Pursuit-diving seabirds (penguins, auks and some cormorants) and pinnipeds (seals and sea lions) are ubiquitous in ocean waters with summer surface temperatures cooler than the mid-teens to low 20s (°C) but are virtually absent in warmer regions. We suggest that the near-absence of these animals at low latitudes is due to TPS, as warm water increases the difficulty of capturing fish prey and increases vulnerability to predation by large ectothermic and partially endothermic sharks. Pursuit-diving birds and pinnipeds are virtually absent from warm temperate and tropical waters, even where primary productivity and fisheries data suggest that food supplies are ample. This indicates that the low productivity that prevails in much of the tropical zone cannot explain the worldwide distributional patterns of pursuit-diving birds and pinnipeds. Endothermy in marine communities increases with cooler temperatures and with animal size. Pursuit-diving birds and pinnipeds are sensitive to temperature limits and may suffer important range contractions as oceans warm. KEY WORDS: Predation · Predator-prey interactions · Seabirds · Pinnipeds · Seals · Whales · Marine food webs · Thermal ecology Full text in pdf format PreviousNextCite this article as: Cairns DK, Gaston AJ, Huettmann F (2008) Endothermy, ectothermy and the global structure of marine vertebrate communities. Mar Ecol Prog Ser 356:239-250. https://doi.org/10.3354/meps07286 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 356. Online publication date: March 18, 2008 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2008 Inter-Research." @default.
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• W2028551418 title "Endothermy, ectothermy and the global structure of marine vertebrate communities" @default.
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