145922 - Testing Bergmanns rule in marine copepods.pdf (1.99 MB)
Testing Bergmann’s rule in marine copepods
journal contributionposted on 2023-05-21, 01:28 authored by Campbell, MD, Schoeman, DS, Venables, W, Abu-Alhaija, R, Batten, SD, Chiba, S, Coman, F, Davies, CH, M Edwards, Eriksen, RS, Everett, JD, Fukai, Y, Fukuchi, M, Garrote, OE, Hosie, G, Huggett, JA, Johns, DG, Kitchener, JA, Koubbi, P, McEnnulty, FR, Muxagata, E, Ostle, C, Robinson, KV, Slotwinski, A, Kerrie SwadlingKerrie Swadling, Takahashi, KT, Tonks, M, Ulribe-Palomino, J, Verheye, HM, Wilson, WH, Worship, MM, Yamaguchi, A, Zhang, W, Richardson, AJ
Macroecological relationships provide insights into rules that govern ecological systems. Bergmann's rule posits that members of the same clade are larger at colder temperatures. Whether temperature drives this relationship is debated because several other potential drivers covary with temperature. We conducted a near-global comparative analysis on marine copepods (97 830 samples, 388 taxa) to test Bergmann's rule, considering other potential drivers. Supporting Bergmann's rule, we found temperature better predicted size than did latitude or oxygen, with body size decreasing by 43.9% across the temperature range (-1.7 to 30ºC). Body size also decreased by 26.9% across the range in food availability. Our results provide strong support for Bergman's rule in copepods, but emphasises the importance of other drivers in modifying this pattern. As the world warms, smaller copepod species are likely to emerge as ‘winners', potentially reducing rates of fisheries production and carbon sequestration.
Department/SchoolInstitute for Marine and Antarctic Studies
PublisherWiley-Blackwell Publishing, Inc.
Place of publicationUnited States
Rights statementCopyright 2021 the authors. Licensed under Creative Commons Attribution 3.0 Unported (CC BY 3.0) https://creativecommons.org/licenses/by/3.0/