Production of androgenetic Nile tilapia, Oreochromis niloticus L.
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Tarih
2002
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Lab Research Fish Diseases
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Diploid androgenetic Nile tilapia, Oreochromis niloticus, were produced using 5 min UV irradiation at 150 muW/cm and heat shock at 42.5degreesC for 3:30 min applied 25 min after fertilization. The survival rates to morula, pigmentation, hatching and yolk sac resorption stages were 42.84+/-4.73%, 10.69+/-9.24%, 2.03+/-0.60% and 0.07+/-0.07% (relative to controls), respectively. A significant female, but not male, effect on the survival was confirmed. Multilocus DNA fingerprinting produced by hypervariable 33.15 DNA probe verified the all-paternal inheritance in the androgens. The sex ratio of the androgenetic tilapia was not significantly different from the expected ratio of 1:0 (male:female), indicating that O. niloticus has a monofactorial sex-determining mechanism with female homogamety and male heterogamety. This study confirmed that the YY genotype is viable and. fertile in O. niloticus.
Açıklama
Anahtar Kelimeler
androgenesis, diploidy, tilapia
Kaynak
Israeli Journal of Aquaculture-Bamidgeh
WoS Q Değeri
Q4
Scopus Q Değeri
Q4
Cilt
54
Sayı
4
