חיפוש מתקדם
Biological Bulletin
Sagi, A., Department of Life Sciences, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Khalaila, I., Department of Life Sciences, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Barki, A., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Hulata, G., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Intersex individuals, possessing both male and female genital openings, were assessed in two groups-7 and 19 months old-of Australian red claw crayfish (Cherax quadricarinatus), All intersex individuals investigated were functional males, as suggested by their male-like morphology and the presence of testes, sperm ducts, androgenic glands, and viable spermatozoa. When an ovary was present in an intersex individual from either group, the gonadosomatic index, the diameter of the oocytes, and the ovarian cytosolic polypeptide profile were similar to those of immature, pre-vitellogenic females. We conclude that intersexuality in C. quadricarinatus does not indicate a case of protandric sequential hermaphroditism, as previously suggested. The case of intersexuality described here presents a unique model for the study of the role of the androgenic gland in the regulation of sex differentiation in crustaceans.
פותח על ידי קלירמאש פתרונות בע"מ -
הספר "אוצר וולקני"
אודות
תנאי שימוש
Intersex red claw crayfish, Cherax quadricarinatus (von Martens): Functional Males with Pre-vitellogenic Ovaries
190
Sagi, A., Department of Life Sciences, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Khalaila, I., Department of Life Sciences, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
Barki, A., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Hulata, G., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Karplus, I., Department of Aquaculture, Volcani Center, Institute of Animal Science, P.O. Box 6, Bet-Dagan 50250, Israel
Intersex red claw crayfish, Cherax quadricarinatus (von Martens): Functional Males with Pre-vitellogenic Ovaries
Intersex individuals, possessing both male and female genital openings, were assessed in two groups-7 and 19 months old-of Australian red claw crayfish (Cherax quadricarinatus), All intersex individuals investigated were functional males, as suggested by their male-like morphology and the presence of testes, sperm ducts, androgenic glands, and viable spermatozoa. When an ovary was present in an intersex individual from either group, the gonadosomatic index, the diameter of the oocytes, and the ovarian cytosolic polypeptide profile were similar to those of immature, pre-vitellogenic females. We conclude that intersexuality in C. quadricarinatus does not indicate a case of protandric sequential hermaphroditism, as previously suggested. The case of intersexuality described here presents a unique model for the study of the role of the androgenic gland in the regulation of sex differentiation in crustaceans.
Scientific Publication
You may also be interested in