Population dynamics of three lizard species from the genus Sceloporus:short-term changes in demographic parameters  

作　　者：Selene VARGAS-GARCÍA Víctor ARGAEZ Israel SOLANO-ZAVALETA J.Jaime ZÚÑIGA-VEGA 

机构地区：[1]Graduate Program in Biological Sciences,National Autonomous University of Mexico,University City,Mexico City,México [2]Department of Ecology and Natural Resources,Faculty of Sciences,National Autonomous University of Mexico,University City,Mexico City,México.

出　　处：《Integrative Zoology》2019年第6期542-560,共19页整合动物学（英文版）

基　　金：Fieldwork was conducted with permission from Secretaría de Medio Ambiente y Re­cursos Re­cursos Naturales-México(SGPA/DGVS/11338/15);We also thank JoséManuel Tivo Guzmán,Othón Cervantes Sánchez and the Comisión Nacional del Agua(CONA­GUA)for providing climatic information.The first au­thor is grateful to the Posgrado en Ciencias Biológicas,Universidad Nacional Autónoma de México for contin­ued academic support and to the Consejo Nacional de Ciencia y Tecnología(CONACyT)for the scholarship received(779026).

摘　　要：Most demographic studies focus on numerical changes that occur within populations across years.However,typically studies at an interannual scale do not provide information on the particular times of the year(particu­lar months or seasons)when rates of survival,recruitment,or migration increase or decrease due to physiolog­ical,behavioral or ecological processes.These monthly or seasonal changes in demographic parameters may lead to substantial variations in population abundance.In this study,we collected capture-mark-recapture data on 3 species of lizards of the genus Sceloporus(Sceloporus torquatus,Sceloporus grammicus and Sceloporus megalepidurus)found in ecologically similar habitats to examine potential changes in demographic rates among 3 different climatic seasons:rainy,cold-dry and warm-dry seasons.We tested different hypotheses about the ef­fect of these seasons on survival,recruitment of new adults,and temporary emigration.We found that during the season with severe thermal constraints,the cold-dry season,survival of S.torquatus decreased markedly.We also detected a considerable increase in the recruitment rate of S.grammicus during the rainy season,when these lizards are establishing territories and finding mates.In contrast,we found no evidence of intra-annual changes in the rate of temporary emigration.In addition,we calculated abundance and population growth rates for each species and for each season.Our study represents a significant contribution to the understanding of in­tra-annual demographic variation in lizards.

关 键 词：ABUNDANCE RECRUITMENT Sceloporus lizards survival temporary emigration 

分 类 号：C92[社会学—人口学]