지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
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Gonadal maturation and annual reproductive cycle in ovoviviparous oblong rockfish, Sebastes oblongus on the basis of monthly gonadosomatic indices (GSI), hepatosomatic indices (HSI) and histological observations of gonadal tissues.
GSI values of female were in a wide range from 0.15±0.01 (July) to 58.54±3.86 (December) and began to increase in August and reached the maxium in December, then decreased rapidly thereafter. Male GSI values were in a range from 0.08±0.03 (July) to 1.55±0.27 (September) and began to increase rapidly in July and reached the maximum in September, then decreased gradually, thereafter.
Female HSI was in a range from 0.89±0.12 (December) to 3.73±0.15 (October), and male's was from 2.09±0.76 (October) to 3.62±0.48 (August). HSI reached the maximum values one or two months before GSI reached their maxium values in both sex, and then decreased rapidly thereafter.
Mature oocytes began to appear in late October as being oocytes began to mature in August, and the type of oocyte development is categorized in the 'group-synchronous oocyte development'. Ovulation and fertilization of ripe oocytes occurred in November, and hatched larvae were born from December to January.
Maturation of testis was progressed in short term from August to October and spermatozoa were released in October. Sperm balls consisted of many spermatozoa were preserved in ovarian cavity of female after copulation.
These results may suggest that the annual reproductive cycle of oblong rockfish could be divided into the following successive stages : growing (August and September), mature (September and October), gestation (November and December), parturition (December and January) and resting (February to July) in female, and growing (August and September), mature (September and October), copulation (October) and resting (November to July) in male.
GSI values of female were in a wide range from 0.15±0.01 (July) to 58.54±3.86 (December) and began to increase in August and reached the maxium in December, then decreased rapidly thereafter. Male GSI values were in a range from 0.08±0.03 (July) to 1.55±0.27 (September) and began to increase rapidly in July and reached the maximum in September, then decreased gradually, thereafter.
Female HSI was in a range from 0.89±0.12 (December) to 3.73±0.15 (October), and male's was from 2.09±0.76 (October) to 3.62±0.48 (August). HSI reached the maximum values one or two months before GSI reached their maxium values in both sex, and then decreased rapidly thereafter.
Mature oocytes began to appear in late October as being oocytes began to mature in August, and the type of oocyte development is categorized in the 'group-synchronous oocyte development'. Ovulation and fertilization of ripe oocytes occurred in November, and hatched larvae were born from December to January.
Maturation of testis was progressed in short term from August to October and spermatozoa were released in October. Sperm balls consisted of many spermatozoa were preserved in ovarian cavity of female after copulation.
These results may suggest that the annual reproductive cycle of oblong rockfish could be divided into the following successive stages : growing (August and September), mature (September and October), gestation (November and December), parturition (December and January) and resting (February to July) in female, and growing (August and September), mature (September and October), copulation (October) and resting (November to July) in male.
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UCI(KEPA) : I410-ECN-0101-2009-529-015332128