全北极蚤功能生态位宽度和系统发育生态位宽度的地理格局。

IF 1.6 3区 农林科学 Q2 ENTOMOLOGY
Boris R Krasnov, Georgy I Shenbrot
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引用次数: 0

摘要

研究了194种蚤的功能生态位宽度和系统发育生态位宽度的地理格局。生态位宽度是指这些蚤利用的小哺乳动物宿主组合的功能和系统发育多样性和独特性。我们问(a)生态位宽度与地理范围大小之间的关系是否符合“生态位宽度假设”,预测正相关;(b)生态位宽度沿地理范围纬度位置的变化是否符合“生态位宽度-纬度假设”,预测低纬度地区生态位宽度较窄。我们发现寄主组合的功能和系统发育多样性,而不是功能和系统发育独特性,显示出符合“生态位宽度假设”预测的模式。分布较广的蚤所利用的寄主组合在功能和系统发育上往往比地理分布有限的蚤具有更大的多样性,但在分布较广的蚤中,寄主的功能和系统发育独特性有所下降。蚤所利用寄主的系统发育多样性不随蚤所处地理范围的纬度位置而变化。相反,宿主的功能多样性以及功能和系统发育独特性从南向北递减,这与“生态位宽度-纬度假说”的预测相矛盾。比较这些结果和先前关于跳蚤生态位宽度的地理格局的结果,我们得出结论:(a)组成、功能和系统发育多样性可能受到某些因素的相似驱动,而受到其他因素的不同驱动;(b)这些多样性方面并不总是相互良好的替代。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Geographic patterns of functional and phylogenetic niche breadth in Holarctic fleas (Siphonaptera).

We studied geographic patterns of functional and phylogenetic niche breadth of 194 flea species. Niche breadth was measured as the functional and phylogenetic diversity and uniqueness of the assemblages of small mammal hosts exploited by these fleas.We asked (a) whether the relationships between niche breadth and geographic range size conform to the 'niche breadth hypothesis', predicting positive correlations, and (b) whether variation of niche breadth along the latitudinal position of geographic range conforms to the 'niche breadth-latitude hypothesis', predicting narrower niche breadth at lower latitudes. We found that the functional and phylogenetic diversity, but not the functional and phylogenetic uniqueness, of the host assemblages demonstrated patterns conforming to the prediction of the 'niche breadth hypothesis'. Host assemblages exploited by broadly distributed fleas tended to be functionally and phylogenetically more diverse than those of fleas with a restricted geographic distribution, but the functional and phylogenetic uniqueness of hosts decreased in more broadly distributed fleas. The phylogenetic diversity of hosts exploited by a flea did not vary with the latitudinal position of the flea's geographic range. In contrast, the functional diversity and both the functional and phylogenetic uniqueness of hosts decreased from south to north, thus contradicting the predictions of 'the niche breadth-latitude hypothesis'. Comparing these and earlier results on the geographic patterns of flea niche breadth, we conclude (a) that compositional, functional and phylogenetic diversity could be similarly driven by some factors and differently by other factors and (b) that these diversity facets are not always good surrogates for each other.

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来源期刊
Medical and Veterinary Entomology
Medical and Veterinary Entomology 农林科学-昆虫学
CiteScore
3.70
自引率
5.30%
发文量
65
审稿时长
12-24 weeks
期刊介绍: Medical and Veterinary Entomology is the leading periodical in its field. The Journal covers the biology and control of insects, ticks, mites and other arthropods of medical and veterinary importance. The main strengths of the Journal lie in the fields of: -epidemiology and transmission of vector-borne pathogens changes in vector distribution that have impact on the pathogen transmission- arthropod behaviour and ecology- novel, field evaluated, approaches to biological and chemical control methods- host arthropod interactions. Please note that we do not consider submissions in forensic entomology.
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