DEMOGRAPHY OF A SEMELPAROUS, HIGH-ELEVATION POPULATION OF SCELOPORUS BICANTHALIS (LACERTILIA: PHRYNOSOMATIDAE) FROM THE NEVADO DE TOLUCA VOLCANO, MEXICO

被引：11

作者：

Rodriguez-Romero, Felipe ^{[1
]}

Smith, Geoffrey R. ^{[2
]}

Mendez-Sanchez, Fernando ^{[3
]}

Hernandez-Gallegos, Oswaldo ^{[1
,3
]}

Sanchez Nava, Petra ^{[3
]}

Mendez de la Cruz, Fausto R. ^{[1
]}

机构：

[1] Univ Nacl Autonoma Mexico, Dept Zool, Inst Biol, Mexico City 04510, DF, Mexico

[2] Denison Univ, Dept Biol, Granville, OH 43023 USA

[3] Univ Autonoma Estado Mexico, Ctr Invest Recursos Biot, Inst Literario 100, Colonia Ctr, Toluca 50000, Mexico

来源：

SOUTHWESTERN NATURALIST | 2011年 / 56卷 / 01期

关键词：

COMPARATIVE LIFE HISTORIES; SOUTHEASTERN ARIZONA; LIZARD; UNDULATUS; DYNAMICS; SCALARIS; JARROVI; SAURIA; REPRODUCTION; ENVIRONMENT;

D O I：

10.1894/GC-193.1

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

We studied demography of a population of viviparous lizard, Sceloporus bicanthalis, from Nevado de Toluca Volcano, Mexico, using mark-recapture methods. Age structure of this population varied seasonally due to an increase in number of juveniles over summer, although neonates were observed in every month. Estimated average density was 304 individuals/ha. Snout-vent length at sexual maturity in viviparous S. bicanthalis was 31 min in males and 32 mm in females. Males survived longer than females, with an expected lifespan of 15 months, compared to 8 months for females. Net reproductive rate of this population was 1, suggesting it was at equilibrium, while generation time was 7 months. This is population has a semelparous life cycle.

引用

页码：71 / 77

页数：7