สืบค้นงานวิจัย
Effects of gonadotropin-releasing hormones and dopamine on ovarian maturation in the Pacific white shrimp, Litopenaeus vannamei, and their presence in the ovary during ovarian development
Tinikul Y. - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Effects of gonadotropin-releasing hormones and dopamine on ovarian maturation in the Pacific white shrimp, Litopenaeus vannamei, and their presence in the ovary during ovarian development
ผู้แต่ง / หัวหน้าโครงการ (EN): Tinikul Y.
บทคัดย่อ (EN): We investigated the effects of two isoforms of gonadotropin-releasing hormone (GnRH), namely octopus GnRH (octGnRH) and lamprey GnRH-III (lGnRH-III), and a neurotransmitter, dopamine (DA), on ovarian maturation and spawning in the Pacific white shrimp, Litopenaeus vannamei. The effects of GnRHs and DA were examined by evaluating gonadosomatic indices (GSIs), oocyte diameters (ODs), proliferation of the germ cells, and hemolymph vitellogenin (Vg) concentrations. Both GnRH groups at the doses of 25 and 250ng/g BW showed significantly shortened ovarian maturation period, increased GSI and OD, whereas DA-injected groups at doses of 2.5×10-7 and 2.5×10-6mol/shrimp showed significantly delayed ovarian maturation, decreased GSI and OD, compared with control groups. However, the numbers of eggs per spawn among experimental groups showed no statistical difference compared with the control group. Injecting GnRHs into shrimps significantly increased hemolymph Vg concentrations at ovarian stage IV compared with the control group, whereas injecting DA had the opposite effect. PCNA staining was detected in oogonia and pre-vitellogenic oocytes in both groups of GnRHs, and showed significant increases of cell proliferation, at day 14, compared with the control groups. In contrast, the groups injected with DA showed statistical decrease of cell proliferation at the same day. GnRH-immunoreactivities (-irs) and DA-ir were both detected in the ovaries. Both GnRH-irs were more intense in the follicular cells surrounding Oc2 and Oc3, whereas DA-ir was intense in the early steps of oocytes. These findings suggest that GnRHs have a stimulating effect on ovarian maturation, while DA may play an opposite role. This study could provide a useful knowledge for enhancing female white shrimp reproduction. © 2013 Elsevier B.V.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
เอกสารแนบ (EN): https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887579482&doi=10.1016%2fj.aquaculture.2013.10.036&partnerID=40&md5=3bc5b2dfff8a5e0c0ca4f2e14249c85b
เผยแพร่โดย (EN): มหาวิทยาลัยมหิดล
คำสำคัญ (EN): Petromyzontidae
เจ้าของลิขสิทธิ์ (EN): มหาวิทยาลัยมหิดล
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การอ้างอิง

Tinikul Y.. "Effects of gonadotropin-releasing hormones and dopamine on ovarian maturation in the Pacific white shrimp, Litopenaeus vannamei, and their presence in the ovary during ovarian development". ไม่ระบุหน่วยงาน. ม.ป.ป.

Tinikul Y.. "Effects of gonadotropin-releasing hormones and dopamine on ovarian maturation in the Pacific white shrimp, Litopenaeus vannamei, and their presence in the ovary during ovarian development". ไม่ระบุหน่วยงาน. ม.ป.ป.. Print.



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Effects of gonadotropin-releasing hormones and dopamine on ovarian maturation in the Pacific white shrimp, Litopenaeus vannamei, and their presence in the ovary during ovarian development
Tinikul Y.
มหาวิทยาลัยมหิดล
ไม่ระบุวันที่เผยแพร่
Neuropeptide F stimulates ovarian development and spawning in the female giant freshwater prawn, Macrobrachium rosenbergii, and its expression in the ovary during ovarian maturation cycle Functional characterization of recombinant gonad-inhibiting hormone (GIH) and implication of antibody neutralization on induction of ovarian maturation in marine shrimp Correlation between gonad-inhibiting hormone and vitellogenin during ovarian maturation in the domesticated Penaeus monodon Characterization of an abalone gonadotropin-releasing hormone and its effect on ovarian cell proliferation The presence of abalone egg-laying hormone-like peptide in the central nervous system and ovary of the blue swimming crab, Portunus pelagicus, and its effect on ovarian maturation Distribution and dynamic expression of serotonin and dopamine in the nervous system and ovary of Holothuria scabra during ovarian maturation The existence of kisspeptin-like peptides and effects on ovarian development and maturation in the giant freshwater prawn Macrobrachium rosenbergii Identification and expression of prostaglandin E synthase (PGES) gene in the central nervous system and ovary during ovarian maturation of the female mud crab, Scylla olivacea Involvement of LvSID-1 in dsRNA uptake in Litopenaeus vannamei Variation of prostaglandin E2 concentrations in ovaries and its effects on ovarian maturation and oocyte proliferation in the giant fresh water prawn, Macrobrachium rosenbergii
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