VARIED SOMATIC GROWTH AND SEX CELL DEVELOPMENT IN RECIPROCAL HYBRIDS OF ROACH RUTILUS RUTILUS (L.) AND IDE LEUCISCUS IDUS (L.)
作者： Janusz Terlecki , Wies ³ awa Kopiejewska
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摘要: Body length and weight the developmental stage of sex cells were determined in 1.5- 3-year-old specimens F1 generation reciprocal hybrids roach Rutilus rutilus ide Leuciscus idus. cell varied ide. The obtained from crossing R. females with L. idus males (R. idus) larger than those (L. rutilus) (P 0.05) a greater body < 0.001). smaller Two-thirds studied x hybrid sexually mature at age 3, only one female exhibited signs cytological maturation. In control samples, reached sexual maturity, while immature. testes contained spermatogonia spermatocytes, most often spermatocytes. ovaries not developing oocytes, but also which stopped an early gametogenesis. These constituted approximately 50-60% area ovary sections 13% females, other they observed singly. results indicate that rapid somatic growth by is inherited to extent through females. differences achieving maturity suggest male genomes may have important impact on this process.
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