Breeding biology of the terrestrial isopod, Porcellionides pruinosus (Brandt, 1833) at Garat Naam (Tunisia)

被引：18
作者：
Achouri, MS [1 ]
Charfi-Cheikhrouha, F [1 ]
机构：
[1] Fac Sci Tunis, Lab Biol Anim, Manar II 2092, Tunisia
来源：
CRUSTACEANA | 2001年 / 74卷
关键词：
D O I：
10.1163/156854001505406
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
The breeding biology of the woodlouse, Porcellionides pruinosus (Brandt, 1833) from a natural population at Garat Naam (Kasserine, Tunisia) has been studied based on monthly sampling carried out from July 1996 to June 1998. The presence of undifferentiated and reproductive females shows that the year cycle of Porcellionides pruinosus is characterized by a reproduction period followed by a sexual rest. Reproduction usually begins in March/April and continues until October. The fecundity and fertility values show a great variation in the number of eggs or embryos contained in the marsupium. This number is correlated with the length of the reproductive female. The sex-ratio underwent fluctuations throughout the sampling period, but always remained skewed in favour of females.
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页码：11 / 26
页数：16
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