Induced spawning of the striped murrel Channa striatus using pituitary extracts, human chorionic gonadotropin, luteinizing hormone releasing hormone analogue, and ovaprim

• Autorzy: Haniffa M A , Merlin T. , Shaik Mohamed J.
• Języki publikacji: EN

Abstrakty

EN

Striated murrel Channa striatus were injected with natural hormones (pituitary extract and human chorionic gonadotropin) and synthetic hormones (luteinizing hormone releasing hormone analogue and ovaprim). When compared to the LHRHap and ovaprim, the latency period was long in pituitary- (24 h) and HCG-injected (26 h) fish. In the pituitary-injected C. striatus the percentage of fertilisation was the lowest (60-68%) but the duration of hatching was longest (39-43 h) followed by HCG- (36-38 h), LHRHap- (34-36 h) and ovaprim-injected (21-23 h) individuals. In terms of fertilisation (95-98%) and hatching, ovaprim yielded better results. Ova reached the highest diameter (1.34-1.45 mm) in C. striatus injected with ovaprim, followed by HCG (1.22-1.30 mm) and pituitary (1.21-1.27 mm). The lowest ova diameter (1.07-1.09 mm) was observed in C. striatus injected with LHRHap.

PL

Zmijogłowom indyjskim, Channa striatus wstrzyknięto naturalne (ekstrakt z przysadki mózgowej, HGC - ludzką gonadotropinę kosmówkową) oraz syntetyczne hormony (LHRHap - analog podwzgórzowego hormonu uwalniającego hormon luteinizujący i ovaprim®). Czas reakcji - w porównaniu do LHRHap i ovaprimu - był względnie długi w przypadku stosowania ekstraktu z przysadki (24 h) i ludzkiej gonadotropiny kosmówkowej (26 h). U ryb, którym wstrzyknięto ekstrakt przysadki, procent zapłodnienia był najniższy (60-68%). Dla odmiany, wylęganie u potomstwa tych ryb trwało najdłużej (39-43 h). Na kolejnych miejscach były ryby poddane działaniu HCG (36-38 h), LHRHap (34-36 h) i ovaprimu (21—23 h). Pod względem zapłodnienia i wylęgania ovaprim dał lepsze wyniki. Największą średnicę (1,34-1,45 mm) osiągnęły jaja C. striatus stymulowanych ovaprimem. Nieco mniejsze były jaja w przypadku ryb pod działaniem HCG (1,22-1,30 mm) i przysadki (1,21-1,27 mm). Najmniejsza średnica jaj (1,07-1,09 mm) była obserwowana u C. striatus, którym wstrzyknięto LHRHap.

Słowa kluczowe

EN

pituitary extract; human chorionic gonadotrophin; striped murrel; luteinizing hormone; Channa striatus; ovaprim; spawning

• Wydawca: -
• Czasopismo: Acta Ichthyologica et Piscatoria
• Rocznik: 2000
• Tom: 30
• Numer: 1
• Opis fizyczny: p.53-60,ref.

Twórcy

autor

Haniffa M A

• St.Xavier's College, Palayamkottai - 627 002, Tamilnadu, India

autor

Merlin T.

autor

Shaik Mohamed J.

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