Wei ZHAO,Nannan YU,Yajuan WANG,et al.Female Reproductive Cycles of Phrynocephalus przewalskii (Lacertilia: Agamidae) in the Tengger Desert, China[J].Asian Herpetological Research(AHR),2011,2(1):30-35.[doi:10.3724/SP.J.1245.2011.00030]
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Female Reproductive Cycles of Phrynocephalus przewalskii (Lacertilia: Agamidae) in the Tengger Desert, China
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Asian Herpetological Research[ISSN:2095-0357/CN:51-1735/Q]

Issue:
2011 VoI.2 No.1
Page:
30-35
Research Field:
Original Article
Publishing date:
2011-03-16

Info

Title:
Female Reproductive Cycles of Phrynocephalus przewalskii (Lacertilia: Agamidae) in the Tengger Desert, China
Author(s):
Wei ZHAO1;  Nannan YU1;  Yajuan WANG1;  Weihong JI2 and Naifa LIU1*
1 School of Life Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
2 Institute of Natural Sciences, Massey University, Private Bag 102904, North Shore Mail Centre, Auckland 0745, New Zealand
Keywords:
Phrynocephalus przewalskii;  lizard;  gonad cycle;  liver cycle;  clutch size;  Tengger Desert
PACS:
-
DOI:
10.3724/SP.J.1245.2011.00030
Abstract:
The timing of reproduction can significantly affect an offspring’s fitness, thereby also influencing the fitness of the parents, especially in species inhabiting extreme environments, such as deserts. Female reproductive cycles in Phrynocephalus przewalskii were studied from April to September 2008. Significant cycles of gonadal volume were found in all studied populations and the cycles were similar among the various populations. Females began vitellogenesis in April and contained oviductal eggs form May to June. Gonad volume decreased significantly in July and reached minimum volume from August to September. The follicular growth was negatively correlated with increasing precipitation and temperature in all populations. Hatching occurs during summer and early fall, when most of the annual rainfall occurs. Mean clutch size based on all populations was 2.7 ± 0.9 SE (n = 71).

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