Effects of environmental factors on sex differentiation in goldfish,Carassius auratus
Goto, R.; Abe, Y.; Masai, K.; Yamaha, E.; Adachi, S.; Yamauchi, K. (2000). Effects of environmental factors on sex differentiation in goldfish,Carassius auratus, in: Norberg, B. et al. (Ed.) Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. pp. 334
In: Norberg, B. et al. (2000). Proceedings of the 6th International Symposium on the Reproductive Physiology of Fish, Bergen, Norway, July 4-9, 1999. International Symposium on the Reproductive Physiology of Fish, 6. Department of Fisheries and Marine Biology, University of Bergen: Bergen. ISBN 82-7461-048-2. 499 pp., meer
In: International Symposium on the Reproductive Physiology of Fish. Museo Nacional de Ciencias Naturales. , meer
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| Auteurs | | Top |
- Goto, R.
- Abe, Y.
- Masai, K.
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- Yamaha, E.
- Adachi, S.
- Yamauchi, K.
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| Abstract |
This study demonstrates temperature-dependent sex differentiation in goldfish. The proportions of females (all female population; XX female-XX male cross) were 94.6% at 15 degree C, 100% at 17 degree C, 94.6% at 20 degree C, 90.5% at 23 degree C, 46.5% at 25 degree C, 15.4% at 28 degree C, and 7.7% at 30 plus or minus 0.5 degree C. The sensitive period of sex differentiation shortened with temperature, the end point of the sensitive period being Day 22 at 30 degree C, and Day 27 at 23 degree C after fertilization. Photoperiod and fish density had no effects on sex differentiation. |
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