TY - JOUR
T1 - Induction of sex change within two full moons during breeding season and spawning in grouper
AU - Alam, Mohammad Ashraful
AU - Bhandari, Ramji Kumar
AU - Kobayashi, Yasuhisa
AU - Soyano, Kiyoshi
AU - Nakamura, Masaru
N1 - Funding Information:
This research was supported by the Takeda Science Foundation and 21st Century COE project entitled “The Comprehensive Analyses on Biodiversity in Coral Reef and Island Ecosystems in Asian and Pacific Regions” of the University of the Ryukyus, Okinawa, Japan, and a Japanese government (Monbukagaku-sho) scholarship to MA Alam. This study was also supported by research project entitled “Utilizing advanced technologies in agriculture, forestry and fisheries,” Japan.
PY - 2006/5/31
Y1 - 2006/5/31
N2 - Artificial sex change was induced within two full moons by an aromatase inhibitor (AI; 1 mg/fish) during the breeding season to establish the quickest method of sex change and natural spawning of the honeycomb grouper (Epinephelus merra). The sex change from female (ovary) to male (testis) occurred during the time between the two full moons (3 weeks) following AI implantation, and the efferent ducts of sex-changed males were filled with sperm. To examine sperm fertility, sex-changed males were mated with natural, normal females and produced fertilized eggs. Most of the hatched larvae grew normally without any morphological deformities. Therefore, the use of this method which is the quickest known sex change method using AI, may contribute to quality sperm production for grouper aquaculture.
AB - Artificial sex change was induced within two full moons by an aromatase inhibitor (AI; 1 mg/fish) during the breeding season to establish the quickest method of sex change and natural spawning of the honeycomb grouper (Epinephelus merra). The sex change from female (ovary) to male (testis) occurred during the time between the two full moons (3 weeks) following AI implantation, and the efferent ducts of sex-changed males were filled with sperm. To examine sperm fertility, sex-changed males were mated with natural, normal females and produced fertilized eggs. Most of the hatched larvae grew normally without any morphological deformities. Therefore, the use of this method which is the quickest known sex change method using AI, may contribute to quality sperm production for grouper aquaculture.
KW - Artificial sex change
KW - Breeding season
KW - Full moon
KW - Honeycomb grouper
KW - Spawning
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U2 - 10.1016/j.aquaculture.2006.01.008
DO - 10.1016/j.aquaculture.2006.01.008
M3 - Article
AN - SCOPUS:33646889344
SN - 0044-8486
VL - 255
SP - 532
EP - 535
JO - Aquaculture
JF - Aquaculture
IS - 1-4
ER -