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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 1997.8
- 수록면
- 363 - 371 (9page)
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Backcross hybridization between female cyprinid loach (Misgurnus anguillicaudatus) and male mud loach (M. mizolepis)×cyprinid loach hybrid were made, and its effect on early survival, cytogenetic traits, and gonad development were examined. Mean fertilization rate and hatching success of backcross hybrids were similar to those found in the maternal species, the cyprinid loach. However, the backcross hybrids revealed significantly improved early survival up to yolk sac absorption (86.0%) compared to cyprinid loach (0%) under low culture temperature (15℃). The erythrocytic size and DNA content of backcross hybrids were nearly intermediate to those of the parents. Karyological analysis of backcross hybrids displayed two kinds of modal chromosome number of 2n=48 or 2n=49. Growth of backcross hybrids over 6 months after hatching was proven to be intermediate bewteen their parental species. Although backcross hybrids had intermediate values between those of thier parents in most morphometric traits, overall external morphology of backcross hybrids was more simlar to cyprinid loach than mud loach×cyprinid loach hybrid. Histological examination of gonads at 2 and 4 months of age revealed that no female was observed in backcross hybrid groups, suggesting the possibility of production of monosex male population.
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UCI(KEPA) : I410-ECN-0101-2009-529-015350004