HERMAPHRODITISM AND SEX REVERSAL IN THE 4 COMMON OVIPAROUS SPECIES OF OYSTERS FROM THE COAST OF KARACHI

被引：22
作者：
ASIF, M
机构：
[1] Institute of Marine Biology, University of Karachi, Karachi
来源：
HYDROBIOLOGIA | 1979年 / 66卷 / 01期
关键词：
O[!sub]1[!/sub]-oocyle 1; O[!sub]2[!/sub]-oocyle 2; O[!sub]3[!/sub]-oocyle 3; S-spermatozoa; St-spermatids;
D O I：
10.1007/BF00019139
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
In the four common oviparous oysters from the coast of Karachi, Crassostrea rivularis, C. madrasensis, Saccostrea glomerata and S. cucculata, the gonad appeared at the age of 2-3 months, at a length of 0.4-0.6 cm. Sex is determined from the origin and hermaphrodites are rare, their percentage among the population increasing as growth proceeds, but is not affected by changes of the seasons. Incidence of hermaphrodites and changes in sex ratio suggest a change of sex as seen in oysters of temperate zones. © 1979 Dr. W. Junk b.v. Publishers.
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页码：49 / 55
页数：7
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