Convict Cichlid Amatitlania nigrofasciata의 난발생 = Embryonic Development of Convict Cichlid Amatitlania nigrofasciat

다국어 초록 (Multilingual Abstract)

We characterized egg development and investigated the effects of temperature on embryonic development time, in the convict cichlid Amatitlania nigrofasciata. Fertilized eggs of this species have an ovoid shape (horizontal axis, 1.56±0.02 mm; vertical axis, 1.26±0.04 mm) and smooth translucent chorion surrounded by a layer of mucous secretion.
At 27±0.5℃, the first cleavage, blastula, gastrula and 16-somite stages of A. nigrofasciata eggs began at 1.5, 4.83, 14 and 40 hours after fertilization, respectively. We measured the development rate of embryos at 12-33℃ and found that the time period from fertilization to hatching was 94 hours at 24℃, 64 hours at 27℃ and 50 hours at 30℃.
At temperatures of 12-21℃, all fertilized eggs died before hatching and those incubated at 33℃ died immediately after hatching.

참고문헌 (Reference)

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