The relationship between gonadotropin and sexual behaviour of male Trichogaster trichopterus (Pallas)


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Authors

  • E Mananos Centre of Marine Biotechnology, University of Maryland, USA
  • Y Zohar Centre of Marine Biotechnology, University of Maryland, USA
  • G Degani Centre of Marine Biotechnology, University of Maryland, USA

Abstract

The levels of gonadotropin (GtH-II) in the plasma and pituitary, and of the
steroids testosterone (T) and progesterone (P) in the plasma and testes, were
measured in male blue gourami (Trichogaster trichopterus) during sexual
behaviour (before and during nest building and during courtship). In the
pituitary of nest-building and courting males, the levels of GtH-II (1854 ±112
and 1520±112 ng/mg protein, respectively) were higher than in males that
were not building nests (10781112 ng/mg protein); while in the plasma, GtHII
levels were 7 ± 1.5, 6 + 1 . 1 and 4.6 ±1.1 ng/ml, respectively. The same
pattern was found in the levels of plasma T:3.6 ± 1.0, 2.4 ± 0.8 and 1.5±0.8
ng/ml, respectively), though no significant difference was found in the testes.
Similarly, the levels of P in the testes were 4 ± 1.0, 3.8 + 0.9 and 2 ± 0.9 ng/
ml, respectively. The relationship between GtH-II and male sexual behaviour
is discussed.

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Author Biographies

  • E Mananos, Centre of Marine Biotechnology, University of Maryland, USA
    Centre of Marine Biotechnology, University of Maryland, USA
  • Y Zohar, Centre of Marine Biotechnology, University of Maryland, USA
    Centre of Marine Biotechnology, University of Maryland, USA
  • G Degani, Centre of Marine Biotechnology, University of Maryland, USA
    Centre of Marine Biotechnology, University of Maryland, USA

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Issue

Vol. 44 No. 3 (1997)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Mananos, E., Zohar, Y., & Degani, G. (2011). The relationship between gonadotropin and sexual behaviour of male Trichogaster trichopterus (Pallas). Indian Journal of Fisheries, 44(3), 239-246. https://epubs.icar.org.in/index.php/IJF/article/view/8838