【摘 要】
:
The annual gametogenesis of Yezo scallop, Patinopecten yessoensis, raised in suspended-hanging (SHCS) and bottom-sowing culture systems (BSCS) on the east c
【机 构】
:
FacultyofMarineBiomedicalScience,JejuNationalUniversity,66Jejudaehakno,Jeju690-756RepublicofKoreaDep
【出 处】
:
18th International Pectinid Workshop(第18届国际扇贝研讨会)
论文部分内容阅读
The annual gametogenesis of Yezo scallop, Patinopecten yessoensis, raised in suspended-hanging (SHCS) and bottom-sowing culture systems (BSCS) on the east coast of Korea was investigated over 2 years.Gametogenesis was initiated in October, when the surface water temperature reached 18℃.The gametes matured fully and were ready for spawning in March and early April.Spawning occurred from late March to late May, when the water temperature rose from 7℃ to 11℃.The gonado-somatic index (GSI), a ratio of gonad weight to total tissue weight, ranged from 3.05 (September) to 23.11 (April) for SHCS scallops and from 3.02 (August) to 20.30 (April) for BSCS scallops.The GSI of SHCS scallops was significantly higher (P<0.01) than that of BSCS scallops during the first reproductive season, but not the next spawning season.SHCS scallops also maintained a significantly higher condition factor (CF) than that of BSCS scallops (P<0.01) throughout most of the period, indicating that the SHCS may provide better growth and reproductive conditions.The higher GSI of SHCS scallops in the first spawning season may have resulted from different levels of food availability and the stocking size of the spats.
其他文献
This study aimed to improve our understanding of the genetic information of the Chinese bay scallop (Argopenten irradians irradians), one of the most import
The culture of scallop Patinopecten yessoensis, is a significant industry in Liaoning, China.However, a problem associated with the bottom culture is that n
Peroxiredoxins (Prxs) constitute a superfamily of antioxidative proteins that play important roles in protecting organisms against damage from reactive oxyg
In Asid Gulf (2417 km2), Masbate (Philippines), five major commercially important pectinids are exploited for foreign and domestic markets.The species explo
The current studies on molecular mechanism of bivalves interacting with bacteria are mainly on mRNA and recombinant protein levels.These works provide littl
Survival of repeatedly discarded saucer scallops was estimated for the Shark Bay trawl fisheries using short-term tag-recapture experiments under various fi
The bay scallop (Argopecten irradians) is a simultaneous hermaphroditic marine bivalve with distinct male and female gonads, and external fertilization.cros
Acute virus necrosis virus (AVNV) was reported as one causative agent responsible for summer mass mortality of adult Zhikong scallop (Chlamysfarreri), which
The C 1q-domain-containing (C1qDC) proteins are a family of proteins characterized by a globular C1q (gC1q) domain in the C-terminus.They are involved in va