Investigation on the Cause of Bad Natural Seed Collection of the Pacific Oyster, Crassostrea gigas: Relationships between the Conditions of Mother Shell and the Viability of the Released Eggs and Larvae Based on the Pathological and Embryological Survey
Investigation on the Cause of Bad Natural Seed Collection of the Pacific Oyster, Crassostrea gigas: Relationships between the Conditions of Mother Shell and the Viability of the Released Eggs and Larvae Based on the Pathological and Embryological Survey
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太平洋牡蛎自然采种不良的原因调查：基于病理学和胚胎学调查的母壳状况与所释放的卵和幼虫活力的关系
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
Lee Tae Seek
中科院分区：
文献类型：
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作者：
Park Mi Seon;L. Young;Lee Tae Seek
1992年和1993年在韩国南部沿海发生牡蛎极坏种子采集的主要采种区调查了牡蛎卵巢寄生虫忠木马氏体（Marteiliodes chungmuensis）的感染率和感染该寄生虫的牡蛎壳料的生产力，以评估坏种子采集的原因。此外，还对海水和牡蛎拉娜中的细菌植物群进行了鉴定，以确定贝类幼虫的病原菌为弧菌属和假单胞菌属。在庆尚南道统勇、全罗南道丽水等地采集到的不良种子中，但在忠清南道大川采集的贝类中未检测到寄生虫。而在被寄生虫感染的卵的细胞质中鉴定出病毒样颗粒。寄生虫感染的卵不能完全受精。未感染的卵在被寄生虫污染的性腺中也能受精，但发育异常，直至D形幼虫，D形拉娜后坏死死亡。部分低脂卵发育的拉娜不能发育到幼鱼，在幼鱼发育早期即死亡。劣种区采集的牡蛎拉娜中的优势菌为假单胞菌和类假单胞菌，占有率为。
Infection rates of oyster ovarian parasite, Marteiliodes chungmuensis and productivity of the oyster shellstock infected with the parasite were investigated at the main seed collection areas in the southern coast of Korea where the extreme bad seed collection of oyster occurred in 1992 and 1993 to evaluate the cause of the bad seed collection. Additionally, the bacterial flora of the sea water and oyster lana were examined to identify the shellfish larva pathogenic bacteria like Vibrio sp. and Pseueomonas sp. In August 1992 to September 1993, infection rate of oyster ovarian parasite, M. chungmuensis at Tongyong, Kyongsangnam province, and Yosu, Chollanam province where the bad seed collection occurred, were and , respectively. But the parasite was not detected in the shellstock collected at Daechon, Chungchongnam province. While a virus-like particle was identified in the cytoplasm of the egg infected by the parasite. The parasite infected egg was not able to fertilize completely. Uninfected egg in the gonad contaminated by the parasite could be able to fertilize but showed an abnormal development till D-shaped larva and then, died of necrosis after D-shaped lana. And some lana developed from low lipid content egg could not develop to the spat and died after the early umbo stage. The predominant bacteria in the oyster lana collected at bad seed collection areas were Pseudomonas sp. and Pseudomonas like bacteria and the occupancy rates were .