Reproductive output in spiny lizards (Genus Sceloporus) with different reproductive mode: A comparative approach

Saúl López-Alcaide, Lorena Y. Cuateta-Bonilla, Rodrigo Macip-Ríos


Reproductive output is one of the most important characteristics of life-history traits. When a lineage exhibits two different modes of reproduction, the comparison of their reproductive output becomes relevant in order to understand how reproductive output evolution is linked to the breeding form or environmental factors. In this study, we analyzed the reproductive output among genus Sceloporus from the bet-hedging life-history model approach. Published and original data were analyzed under a comparative phylogenetic and standard statistical analyses between environmental variables and life-history traits. No difference in reproductive output between oviparous and viviparous species among the genus Sceloporus was detected. Clutch/brood size was negatively correlated with minimum and average environmental temperature. Furthermore, body size was positively correlated with clutch/brood size with clutch/litter size were correlated with body size. A high level of the phylogenetic signal for body size, body mass, and clutch/brood size was detected, but not for reproductive effort. Since all life-history traits examined seems to have deeply evolutionary history, nevertheless, they still correlated with environmental variables indicating some evidence for bet-hedging. Results was also interpreted under the climate change effects; it seems that these lizards could be facing difficult times managing climate change.

Palabras clave

Reproductive effort; cutch size; body size; phylogenetic signal; bet-hedging

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Revista Mexicana de Biodiversidad, Año 3, No. 12, enero-marzo 2014, es una publicación trimestral editada por la Universidad Nacional Autónoma de México, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510, Ciudad de México, a través del Instituto de Biología, Tercer Circuito Universitario s/n, Ciudad Universitaria, Col. Copilco, Del. Coyoacán, C.P. 04510, Ciudad de México, Tel. (55)56229164,, responsable: Dr. Fernando Álvarez Noguera. Reserva de Derechos al uso Exclusivo No. 04-2013-092709142100-203, ISSN: 2007-8706, ambos otorgados por el Instituto Nacional del Derecho de Autor, Responsable de la última actualización de este número, Instituto de Biología, UNAM, Dr. Fernando Álvarez Noguera, Tercer Circuito Universitario s/n, Ciudad Universitaria, Col. Copilco, Del. Coyoacán, C.P. 04510, Ciudad de México, fecha de la última modificación: 25 de agosto de 2016.

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