Study on the <i>Cymatium pileare</i> Ⅰ. Reproduction and larval development characteristics

Zhou Yongcan; Chen Guohua; Pan Jinpei

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Zhou Yongcan, Chen Guohua, Pan Jinpei. Study on the Cymatium pileare Ⅰ. Reproduction and larval development characteristics[J]. Haiyang Xuebao, 2000, 22(2): 97-104.

Citation:

Zhou Yongcan, Chen Guohua, Pan Jinpei. Study on the Cymatium pileare Ⅰ. Reproduction and larval development characteristics[J]. Haiyang Xuebao, 2000, 22(2): 97-104.

Zhou Yongcan, Chen Guohua, Pan Jinpei. Study on the Cymatium pileare Ⅰ. Reproduction and larval development characteristics[J]. Haiyang Xuebao, 2000, 22(2): 97-104.

Citation:

Zhou Yongcan, Chen Guohua, Pan Jinpei. Study on the Cymatium pileare Ⅰ. Reproduction and larval development characteristics[J]. Haiyang Xuebao, 2000, 22(2): 97-104.

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Study on the Cymatium pileare Ⅰ. Reproduction and larval development characteristics

1.
Fishery Department, Hainan University, Haikou 570228
2.
South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301

Received Date: 1997-08-20
Rev Recd Date: 1999-08-02

Abstract

Abstract

The breeding cycle of Cymatium pileare can be separated into the following 4 stages: (1)pairing and copulation; (2)egg laying; (3)incubation and (4) larva departing from the spent egg capsules. The copulation usually rakes place 10～15 d before egg laying, and the egg laying season is from March to October when the water temperature is up to 22℃ in Sanya, Hainan Province. After egg laying, the mother C. Pileare will remain on the opening of the egg mass for incubation, which is essential for the fertilized eggs to develop. Temperature and salinity also play important roles in the development of fertilized eggs. At the favorable temperature of 22～30℃ and under the incubation of the mother C. Pilaare, the fertilized eggs need about 438 d degree centigrade of accumulating heat to develop into metamorphosed veliger larvae. The process of its larval development is similar to that of the other prosohranch gastropod, which includes: cleavage, blastula, archenteron and veliger larva stage.
- Cymatium pileare,
- reproduction,
- larva,
- development

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References(11)

References

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