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A Cytological Studies on Gynogenesis of Pengze Crucian Carp

Shu Hu

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Abstract

Eggs stimulated by the Pengze crucian carp (Carassius auratus) and the sharpfin carp (Cyprinus acutidorsalis) sperms were studied.The results showed that either homologous or heterologous sperm nucleus had the same developmental process:the sperm nucleus remained compact after entering the Pengze crucian carp's egg, it did not undergo decondensation or transform into male pronuleus (but no amphimixis).About 10 minutes after spawning only one polar body was extruded from the ripe egg cells.The results indicated that the Pengze crucian carp shows the typical gynogenetic characteristics on cytological level and the carps do reproduce by gynogenesis.

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What this paper is about

Eggs stimulated by the Pengze crucian carp (Carassius auratus) and the sharpfin carp (Cyprinus acutidorsalis) sperms were studied.The results showed that either homologous or heterologous sperm nucleus had the same developmental process:the sperm nucleus remained compact after entering the Pengze crucian carp's egg, it did not undergo decondensation or transform into male pronuleus (but no amphimixis).About 10 minutes after spawning only one polar body was extruded from the ripe egg cells.The results indicated that the Pengze crucian carp shows the typical gynogenetic characteristics on cytological level and the carps do reproduce by gynogenesis.

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Available abstract

Eggs stimulated by the Pengze crucian carp (Carassius auratus) and the sharpfin carp (Cyprinus acutidorsalis) sperms were studied.The results showed that either homologous or heterologous sperm nucleus had the same developmental process:the sperm nucleus remained compact after entering the Pengze crucian carp's egg, it did not undergo decondensation or transform into male pronuleus (but no amphimixis).About 10 minutes after spawning only one polar body was extruded from the ripe egg cells.The results indicated that the Pengze crucian carp shows the typical gynogenetic characteristics on cytological level and the carps do reproduce by gynogenesis.

Key concepts: Crucian carp, Carassius auratus, Cyprinus, Sperm, Carp, Biology, Nucleus, Anatomy

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