NDLI: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

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Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Erratum to: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

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Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Content Provider	Springer Nature Link
Author	Shimizu, Daisuke Fujinami, Yuichiro Sawaguchi, Sayumi Matsubara, Takahiro
Copyright Year	2012
Abstract	The objective of this study is to establish a method for acquiring large quantities of high-quality eggs for artificial fertilization from hatchery-reared broodstock of spotted halibut Verasper variegatus. We estimated the optimum conditions for implantation of luteinizing hormone-releasing hormone analog (LHRHa) cholesterol pellet (LHRHa-CP) to induce ovulation from two experiments which focused on the dose and the timing combined with monitoring of oocyte development by ovarian cannulation. From the results of cannulation, vitellogenesis of hatchery-reared broodstock was suggested to occur normally, although final oocyte maturation was not initiated in the first clutch of oocytes. In late December, oocytes in the most advanced clutch still underwent vitellogenesis, having diameter of about 0.82 mm. LHRHa-CP implantation during this period had no remarkable effects, except for administration at high dose (100 μg/kg). In contrast, in mid January, when oocyte diameter reached about 0.95 mm, ovulation occurred in most individuals, even at low dose (20 μg/kg). In mid February atretic oocytes became remarkable and LHRHa-CP implantation showed much lower performance in terms of egg quality. The diameter of growing oocytes converged to about 0.95 mm, which was that of fully grown postvitellogenic oocytes. Thus, oocyte diameter is suggested to be an effective indicator to estimate the timing of LHRHa-CP implantation.
Starting Page	1245
Ending Page	1252
Page Count	8
File Format	PDF
ISSN	09199268
Journal	Fisheries Science
Volume Number	78
Issue Number	6
e-ISSN	14442906
Language	English
Publisher	Springer Japan
Publisher Date	2012-07-01
Publisher Place	Japan
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	LHRHa Implant Final oocyte maturation Ovulation Hatchery-reared broodstock Spotted halibut Food Science Freshwater & Marine Ecology Fish & Wildlife Biology & Management
Content Type	Text
Resource Type	Article
Subject	Aquatic Science

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Erratum to: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Erratum to: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Process of Final Oocyte Maturation and Ovulation Cycle in Captive Spotted Halibut, Verasper variegatus

Pedigree analysis of recaptured fish in the stock enhancement program of spotted halibut Verasper variegatus

Habitat utilization, feeding, and growth of wild spotted halibut Verasper variegatus in a shallow brackish lagoon: Matsukawa-ura, northeastern Japan

Growth and habitat of spotted halibut Verasper variegatus in the shallow coastal nursery area, Shimabara Peninsula in Ariake Bay, Japan

Effects of Water Temperature on Survival and Sex Differentiation in Hatchery-reared Spotted Halibut Verasper variegatus

Artificial gynogenesis and assessment of homozygosity in meiotic gynogens of spotted halibut (Verasper variegatus)

Occurrence and distribution of settling and newly settled spotted halibut Verasper variegatus and Japanese flounder Paralichthys olivaceus in shallow nursery grounds around Shimabara Peninsula, western Japan

Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

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Erratum to: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Erratum to: Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog

Process of Final Oocyte Maturation and Ovulation Cycle in Captive Spotted Halibut, Verasper variegatus

Pedigree analysis of recaptured fish in the stock enhancement program of spotted halibut Verasper variegatus

Habitat utilization, feeding, and growth of wild spotted halibut Verasper variegatus in a shallow brackish lagoon: Matsukawa-ura, northeastern Japan

Growth and habitat of spotted halibut Verasper variegatus in the shallow coastal nursery area, Shimabara Peninsula in Ariake Bay, Japan

Effects of Water Temperature on Survival and Sex Differentiation in Hatchery-reared Spotted Halibut Verasper variegatus

Artificial gynogenesis and assessment of homozygosity in meiotic gynogens of spotted halibut (Verasper variegatus)

Occurrence and distribution of settling and newly settled spotted halibut Verasper variegatus and Japanese flounder Paralichthys olivaceus in shallow nursery grounds around Shimabara Peninsula, western Japan

Egg collection from hatchery-reared broodstock of spotted halibut Verasper variegatus treated with LHRH analog