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Dose-dependent spawning response of mature female sea bass, Lates calcarifer (Bloch), to pelleted luteinizing hormone-releasing hormone analogue (LHRHa)

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วันที่
1989
ผู้เขียน
Garcia, LM ORCID
Page views
1,650
เรื่อง
fertilization ASFA
females ASFA
fish eggs ASFA
induced ovulation ASFA
spawning ASFA
analogs ASFA
sex hormones ASFA
Lates calcarifer AGROVOC
sea bass AGROVOC
Taxonomic term
Lates calcarifer GBIF
เมตาดาต้า
แสดงระเบียนรายการเต็ม

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นามธรรม
The induction of sequential spawnings of mature female sea bass following intraperitoneal implantation of various doses of luteinizing hormone-releasing hormone analogue (LHRHa) in a 95% cholesterol pellet was investigated. LHRHa stimulated a dose-dependent increase in spawning rate (number of spawnings per fish over a 4-day period) at doses ranging from 4.75 to 75 μg/kg body weight. Higher doses ranging from 150 to 300 μg/kg resulted in significantly fewer spawnings (62.5%–75%). Untreated control sea bass did not spawn. Sham-implanted fish failed to spawn or did so at significantly lower rates (0%–6.3%) compared to hormone-treated fish.

Spawning induction at the highest hormone dose tested (300 μg/kg) resulted in the lowest mean egg fertilization rate of 30.1%. Mean fertilization rates, ranging from 60.5% to 82.2%, at the lower doses of LHRHa were not significantly different. Mean hatching rates ranging from 30% to 76.5% following induction of sequential spawning by several doses of LHRHa were similar. At all hormone doses tested, mean egg production levels of 37.3–58.7×104 eggs/kg body weight were highest on the first day of spawning and declined significantly on subsequent days. Mean egg production levels of 1.2–6.9×104 eggs/kg were always lowest on the last day of spawning. Similar egg production levels among all hormone doses during each spawning day were observed. These results indicate that the quality and quantity of spawned eggs may, in part, be influenced by sequential spawnings triggered by LHRHa pellet implantation in sea bass.
URI
http://hdl.handle.net/10862/1296
การอ้างอิง
Garcia, L. (1989). Dose-dependent spawning response of mature female sea bass, Lates calcarifer (Bloch), to pelleted luteinizing hormone-releasing hormone analogue (LHRHa). Aquaculture, 77(1), 85-96. https://doi.org/10.1016/0044-8486(89)90024-0 
DOI
10.1016/0044-8486(89)90024-0
Type
Article
ISSN
0044-8486
คอลเลกชัน
  • Journal Articles [1156]

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    Hilomen-Garcia, G. V.; Baldevarona, R. B.; Lacanilao, F. J. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1996)
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    Milt production of sea bass Lates calcarifer Bloch administered an analogue of luteinizing hormone-releasing hormone and 17α-methyltestosterone 

    Hilomen-Garcia, G. V.; Baldevarona, R. B.; Lacanilao, F. (Society of Israeli Aquaculture and Marine Biotechnology, 2002)
    The milt production responses of sexually mature sea bass Lates calcarifer to (D-Ala6, Pro9-N- ethylamide) luteinizing hormone-releasing hormone (LHRHa) and 17α-methyltestosterone injections were ...
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    Research on marine and freshwater fishes 

    Emata, Arnil C. (Aquaculture Department, Southeast Asian Fisheries Development Center, 1995)
    Most of the fish research at SEAFDEC AQD in 1992-1994 was on milkfish. Studies were conducted on year-round spawning through hormonal or environmental manipulation; optimum lipid and protein levels and ration size for ...

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