International Journal of Fisheries and Aquatic Studies
2017, Vol. 5, Issue 1, Part F
Variations of reproduction in Mascarene Grass Frog in Banco National Park, Côte d’Ivoire
Author(s): Yao Kouadio Clément, Tohe Blayda, Dietoa Yéhé Mathieu and Gourene Germain
Abstract: The reproduction of
Ptychadena mascareniensis (Ptychadenidae) was studied in rainy and dry seasons in three habitats (Bay, Fish Farm and Filtisac) in Banco National Park (Ivory Coast). After weighing and dissection of different specimens, male (75) and female (67) gonads are weighed. The eggs of female gonad were counted. The sizes at first sexual maturity for males and females are respectively 41.80 mm and 50.40 mm in Bay, 44.25 mm and 51.10 mm inFish Farm and 43.75 mm and 54.75 mm at Filtisac. The sex ratio is in favor of females in all sites except for the rainy season at Filtisac where it’s in favor of males (1.17 / 1). The spatial variations of the gonado somatic index (GSI) in females recorded are 6.30%, 7.54% and 6.54% respectively at Bay, Fish Farm and Filtisac. Regarding males, the median values of GSI (0.48%; 0.19% and 0.22% observed in Bay, Fish Farm and Filtisac respectively) did not vary significantly. Regarding the fertility, the average values of absolute fertility in Bay, Fish Farm and Filtisac are 834, 997 and 644 oocytes respectively. It was concluded that there was a significant difference in the variability of absolute fertility is observed between the fish farm and Filtisac. Regarding the seasons, the difference is significant only between absolute fertility in the dry season in the Bay and in the rainy season at the fish farm.
Pages: 411-416 | 1059 Views 95 DownloadsDownload Full Article: Click Here
How to cite this article:
Yao Kouadio Clément, Tohe Blayda, Dietoa Yéhé Mathieu, Gourene Germain. Variations of reproduction in Mascarene Grass Frog in Banco National Park, Côte d’Ivoire. Int J Fish Aquat Stud 2017;5(1):411-416.
