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Divergence and constraint in the thermal sensitivity of aquatic insect swimming performance

Current Zoology 2020年第5期66卷 555-564页

作者： Alisha A.SHAH Eva M.S.Bacmeister juan g.rubalcaba Cameron K.ghalambor Department of Biology Colorado State UniversityFort CollinsCO80526USA Division of Biological Sciences University of MontanaMissoulaMT59812USA Department of Biology McGill University1205 Docteur PenfieldMontrealQCCanada Department of Biology Centre for Biodiversity DynamicsNorwegian University of Science and Technology(NTNU)TrondheimNorway

Environmental temperature variation may play a significant role in the adaptive evolutionary divergence of ectotherm thermal performance curves(TPCs).However,divergence in TPCs may also be constrained due to various ***,we measured TPCs for swimming velocity of temperate and tropical mayflies(Family:Baetidae)and their stonefly predators(Family:Perlidae)from different *** predicted that differences in seasonal climatic regimes would drive divergence in TPCs between temperate and tropical *** tropical temperatures should favor the evolution of"specialists"that perform well across a narrow range of ***,variable temperatures in temperate zones,however,should favor"generalists"that perform well across a broad range of *** phylogenetically paired comparisons of mayflies and stoneflies,swimming speed was generally unaffected by experimental temperature and did not differ among populations between latitudes,suggesting a maintenance of performance breadth across elevation and *** exception was found between temperate and tropical mayflies at low elevation where climatic differences between latitudes are *** addition,TPCs did not differ between mayflies and their stonefly predators,except at tropical low *** results indicate that divergence in TPCs may be con strai ned in aquatic in sects except under the most differe nt ther・mal regimes,perhaps because of trade-offs that reduce thermal sensitivity and increase performance breadth.

关键词： aquatic insects climate variability elevation latitude predator-prey swimming performance thermal performance curve

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