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자료유형
학술저널
저자정보
저널정보
한국수산과학회 양식분과 한국양식학회지 한국양식학회지 제10권 제2호
발행연도
1997.5
수록면
133 - 141 (9page)

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Gonadal maturation and annual reproductive cycle of the cultured scallop, Patinopecten yessoensis from eastern waters near of Kangwon-do province, Korea were studied on the basis of monthly variation of gonadosomatic indices (GSI) and histological observations of gonadal tissue.
During the experimental period, water temperature at the depth of 20 m and sunshine duration per day were ranged from 5.3℃ to 18.0℃ and 9.4 to 14.6 hours, respectively.
GSI values of female were in a wide range from 2.84±0.37 (August) to 22.66±4.38 (April). GSI values began to increase in March and reached the maxium in April, then decreased rapidly. GSI values of male were in a range from 2.04±0.80 (August) to 20.46±1.49 (April) and were same tendency with female's.
Digestive diverticula indices (DDI) of both sex reached the maximum values in December, then decreased gradually until September. Contrary to GSI, adductor muscle indices (AMI) of both sex were the minium values in April, but began to increase rapidly until July and reached 47.71±3.17 (female) and 48.70±3.55 (male).
In the scallop collected hermaphroditic gonads were found. Monthly changes of oocyte diameter were in a range from 11.3 ㎛ (October) to 73.3 ㎛ (April) and nuclear diameters were in a range from 8.3 ㎛ (September) to 35.3 ㎛ (April), similar tendency with each other. The changes in number of ovarian tubules were reciprocal tendency with those of oocyte diameter and monthly number of ovarian tubules per ㎟ in the tissue perparation was in a range from 51 (April) to 175 (August).
As the results, the annual reproductive cycle of the cultured scallop from eastern waters of Korea could be classified into five successive stages : multiplicative (October), growing (November to February), mature (March and April), spawning (April to June) and recovery (July to September) in female ; multiplicative (October and November), growing (December and January), mature (February to April), spawning (April to June) and recovery (July to September) in male.

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UCI(KEPA) : I410-ECN-0101-2009-529-015349761