Size-fecundity relationships and reproductive investment in females of Physalaemus riograndensis Milstead, 1960 (Anura, Leiuperidae) in Uruguay

被引：0
|
作者：
Pereira, Gisela [1 ]
Maneyro, Raul [1 ]
机构：
[1] Univ Republica, Fac Ciencias, Inst Ecol & Ciencias Ambientales, Lab Sistemat & Hist Nat Vertebrados, Montevideo 11400, Uruguay
来源：
HERPETOLOGICAL JOURNAL | 2012年 / 22卷 / 03期
关键词：
anura; body size; fat body; fecundity; Physalaemus riograndensis; reproductive investment; ATLANTIC FOREST; TRADE-OFF; LEPTODACTYLIDAE; FROGS; POPULATION; ASSEMBLAGE; PATTERNS; BIOLOGY; CYCLE;
D O I：
暂无
中图分类号：
Q95 [动物学];
学科分类号：
071002 ;
摘要：
We describe the reproductive biology of female Physalaemus riograndensis from Uruguay. Mature ovaries with post-vitellogenic oocytes were extracted from females to obtain an index of reproductive investment (RI). Monthly variation in snout-vent-length (SVL, n=328) suggests a seasonal variation in reproductive activity. Gravid females were found between October and April. RI values were generally lower than RI in other species in the genus. There was a positive correlation between SVL and fecundity for both linear and exponential models. Relative size of fat bodies was highest during the period of highest reproductive activity, suggesting that they retain energy for vitellogenic activity. The reproductive dynamics of P. riograndensis resembles one of prolonged breeding anurans.
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页码：145 / 150
页数：6
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