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Latitudinal gradients in body size and sexual size dimorphism in fleas:males drive Bergmann’s pattern

Integrative Zoology 2023年第3期18卷 414-426页

作者： Boris R.KRASNOV Elena N.SURKOVA Georgy I.SHENBROT Irina S.KHOKHLOVA Mitrani Department of Desert Ecology Swiss Institute for Environmental and Energy ResearchJacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevMidreshet Ben-GurionIsrael French Associates Institute for Agriculture and Biotechnology of Drylands Jacob Blaustein Institutes for Desert ResearchBen-Gurion University of the NegevMidreshet Ben-GurionIsrael

We tested for the effects of latitude and geographic range size(GRS)on body size,leg length,and sexual size dimorphism(SSD)across 103 species ofﬂeas,taking into account phylogenetic between-species *** the data on body size were combined for males and females,the positive correlation between body size and latitude,but not GRS,was *** the analysis was restricted to one sex only,the effect of latitude appeared to be non-signiﬁcant for females,whereas male body size increased with an increase in ***ﬁc body size variation was not associated with either the latitude or the latitudinal span of the geographic range,independently of which data subset was *** evidence of association between size-independent tibia length and latitude was found for either females,males,or both sexes *** degree of SSD decreased with a decrease in latitude but was not affected by *** conclude that macroecological patterns might be manifested differently in males and *** should be kept in mind while searching for these patterns.

关键词： Bergmann’s rule ﬂeas geographic range latitude sexual dimorphism

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Composition and distribution of fish species collectedduring the fourth Chinese National Arctic Research Ex-pedition in 2010

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Advances in Polar Science 2012年第2期23卷 116-127页

作者： LIN Longshan LIAO Yunchih ZHANG Jing ZHENG Senlin XIANG Peng YUXingguang WU Risheng SHAO Kwangtsao Third Institute of Oceanography State Oceanic AdministrationXiamen 361005 Biodiversity Research Center Academia SinicaTaipei 11529China Fisheries College of Jimei University Xiamen 361012

There are awareness and concerns caused by the decreasing sea ice coverage around the Arctic and Antarctic due to effects of climate change. Emphasis in this study was on rapid changes in Arctic sea ice coverage and its impacts on the marine ecology during the fourth Chinese National Arctic Research Expedition in 2010. Our purpose was to establish a baseline of Arctic fish compositions, and consequent effects of climate change on the fish community and biogeography. Fish specimens were col- lected using a multinet middle-water trawl, French-type beam trawl, otter trawl, and triangular bottom trawl. In total, 36 tows were carried out along the shelf of the Bering Sea, Bering Strait, and Chukchi Sea in the Arctic Ocean. in total, 41 fish species belonging to 14 families in 7 orders were collected during the expedition. Among them, the Scorpaeniformes, including 17 species, accounted for almost one third of the total number （34.8%）, followed by 14 species of the Perciformes （27.0%）, 5 species of the Pleuronecti- formes （22.3%）, and 2 species of the Gadiformes （15.4%）. The top 6 most abundant species were Hippoglossoides robustus, Bore- gadus saida, Myoxocephalus scorpius, Lumpenus fabricii, Artediellus scaber, and Gymnoeanthus trieuspis. Abundant species var- ied according to the different fishing methods; numbers of families and species recorded did not differ with the various fishing methods; species and abundances decreased with depth and latitude; and species extending over their known geographic ranges were observed during the expedition. Station information, species list, and color photographs of all fishes are provided.

关键词： Arctic fish geographic range Bering Sea Bering Strait Chukchi Sea climate change

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