အရာများအတွက် ရိုးရှင်းသော မှတ်တမ်းများကို ပြပါ။
Milt production of sea bass Lates calcarifer Bloch administered an analogue of luteinizing hormone-releasing hormone and 17α-methyltestosterone
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dc.contributor.author | Hilomen-Garcia, G. V. | |
dc.contributor.author | Baldevarona, R. B. | |
dc.contributor.author | Lacanilao, F. | |
dc.date.accessioned | 2014-01-23T05:47:59Z | |
dc.date.available | 2014-01-23T05:47:59Z | |
dc.date.issued | 2002 | |
dc.identifier.citation | Hilomen-Garcia, G. V., Baldevarona, R. B., & Lacanilao, F. (2002). Milt production of sea bass Lates calcarifer Bloch administered an analogue of luteinizing hormone-releasing hormone and 17α-methyltestosterone. The Israeli Journal of Aquaculture-Bamidgeh, 54(4), 173-182. | en |
dc.identifier.issn | 0792-156X | |
dc.identifier.uri | http://hdl.handle.net/10862/1931 | |
dc.description.abstract | 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 examined. At 24 h after injection of a low dose of LHRHa (20 μg/kg BW), the sperm count decreased significantly compared to saline-treated fish, but it returned to pre-treatment levels 48 h after injection, suggesting a possible hydration of the milt. Other milt parameters (milt volume, spermatocrit, sperm production) in LHRHa-treated fish did not vary from their controls at 24 or 48 h after injection but the overall pattern suggested a reduction in milt viscosity. Total expressible milt and spermatozoa collected over the 48-h experiment was approximately three-fold higher in LHRHa-injected fish than in saline-injected fish, indicating a stimulation of spermatozoa production, not merely milt dilution due to hydration. In a second experiment, sperm count and spermatocrit were significantly lower than those of saline-injected fish at 17 and 48 h after a single injection of a high dose of LHRHa (80 μg/kg BW). A methyltestosterone injection combined with the LHRHa injection also resulted in a significantly lower sperm count, but the spermatocrit remained comparable to the control group, suggesting a suppression of the LHRHa-induced milt hydration response. Results demonstrate that LHRHa stimulates milt hydration and spermatozoa production in milting sea bass and that a simultaneous methyltestosterone injection partially suppresses this response. | en |
dc.description.sponsorship | SEAFDEC Aquaculture Department study code Br-02-F90T of Flor Lacanilao. | en |
dc.language.iso | en | en |
dc.publisher | Society of Israeli Aquaculture and Marine Biotechnology | en |
dc.relation.uri | http://evols.library.manoa.hawaii.edu/bitstream/handle/10524/19058/54_4_Hilomen-Garcia.pdf | |
dc.subject | Lates calcarifer | en |
dc.subject | sea bass | en |
dc.subject | LH | en |
dc.title | Milt production of sea bass Lates calcarifer Bloch administered an analogue of luteinizing hormone-releasing hormone and 17α-methyltestosterone | en |
dc.type | Article | en |
dc.citation.volume | 54 | |
dc.citation.issue | 4 | |
dc.citation.spage | 173 | |
dc.citation.epage | 182 | |
dc.citation.journalTitle | The Israeli Journal of Aquaculture-Bamidgeh | en |
dc.subject.asfa | aquaculture techniques | en |
dc.subject.asfa | breeding stock | en |
dc.subject.asfa | fish culture | en |
dc.subject.asfa | hormones | en |
dc.subject.asfa | induced ovulation | en |
dc.subject.asfa | males | en |
dc.subject.asfa | sex hormones | en |
dc.subject.asfa | sexual maturity | en |
dc.subject.asfa | sexual reproduction | en |
dc.subject.asfa | sperm | en |
dc.subject.scientificName | Lates calcarifer | en |
ဤအရာအတွက် ဖိုင်
ဖို | အရွယ်အစား | ပုံစံ | ရှာဖွေကြည့်သည်။ |
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ဤအရာသည် အောက်ပါစုစည်းမှုများမှ သက်ဆိုင်ပါသည်။
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AQD Journal Articles [1222]
These papers were contributed by AQD staff to various national and international journals