Environment and traits affect parasite and host species positions but not roles in flea–mammal networks  

作　　者：Boris R.KRASNOV Georgy I.SHENBROT Irina S.KHOKHLOVA M.Fernanda LÓPEZ BERRIZBEITIA Sonja MATTHEE Juliana P.SANCHEZ Luther VAN DER MESCHT 

机构地区：[1]Mitrani Department of Desert Ecology,Swiss Institute for Dryland Environmental and Energy Research,Jacob Blaustein Institutes for Desert Research,Ben-Gurion University of the Negev,Sede Boqer Campus,Midreshet Ben-Gurion,Israel [2]French Associates Institute for Agriculture and Biotechnology of Drylands,Jacob Blaustein Institutes for Desert Research,Ben-Gurion University of the Negev,Sede Boqer Campus,Midreshet Ben-Gurion,Israel [3]Programa de Conservación de los Murciélagos de Argentina(PCMA)and Instituto de Investigaciones de Biodiversidad Argentina(PIDBA)-CCT CONICET Noa Sur(Consejo Nacional de Investigaciones Científicas y Técnicas),Facultad de Ciencias Naturales e IML,UNT,and Fundación Miguel Lillo,San Miguel de Tucumán,Argentina [4]Department of Conservation Ecology and Entomology,Stellenbosch University,Matieland,South Africa [5]Centro de Investigaciones y Transferencia del Noroeste de la Provincia de Buenos Aires—CITNOBA(CONICET-UNNOBA),Pergamino,Argentina [6]Clinvet International(Pty)Ltd,Bloemfontein,South Africa [7]Department of Zoology and Entomology,University of the Free State,Bloemfontein,South Africa

出　　处：《Integrative Zoology》2024年第6期1163-1180,共18页整合动物学(英文版)

基　　金：supported by Israel Science Foundation(grant 548/23 to BRK and ISK).

摘　　要：We studied spatial variation in the effects of environment and network size on species positions and roles in multiple flea–mammal networks from four biogeographic realms.We asked whether species positions(measured as species strength[SS],the degree of interaction specialization[d],and the eigenvector centrality[C])or the roles of fleas and their hosts in the interaction networks:(a)are repeatable/conserved within a flea or a host species;(b)vary in dependence on environmental variables and/or network size;and(c)the effects of environment and network size on species positions or roles in the networks depend on species traits.The repeatability analysis of species position indices for 441 flea and 429 host species,occurring in at least two networks,demonstrated that the repeatability of SS,d,and C within a species was significant,although not especially high,suggesting that the indices’values were affected by local factors.The majority of flea and host species in the majority of networks demonstrated a peripheral role.A value of at least one index of species position was significantly affected by environmental variables or network size in 41 and 36,respectively,of the 52 flea and 52 host species that occurred in multiple networks.In both fleas and hosts,the occurrence of the significant effect of environment or network size on at least one index of species position,but not on a species’role in a network,was associated with some species traits.

关 键 词：CENTRALITY ENVIRONMENT FLEAS small mammals species strength traits 

分 类 号：TN9[电子电信—信息与通信工程]