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International Journal of Fisheries and Aquatic Studies
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E-ISSN: 2347-5129, P-ISSN: 2394-0506

International Journal of Fisheries and Aquatic Studies

2017, Vol. 5, Issue 6, Part B

First record of sex reverses in two Indo-Pacific mytildes (Brachidontes variabilis and Modiolus arcutulus) in the Great Bitter Lake, Egypt


Author(s): Kandeel El-Sayed Kandeel

Abstract: Two Indo-Pacific mytilides; Brachidontes variabilis and Modiolus arcuatulus, were collected monthly from the Great Bitter Lake during the period from December 2015 to March 2016. The two species are dioecious. Females significantly outnumbered males. X2 test = 8.042 (P < 0.005) and 7.100 (P < 0.01) for B. variabilis and M. arcuatulus, respectively. Hermaphroditic individuals were found in each species. The present study suggests, perhaps surprisingly, the presence of sex reverse for the first time in the two mytilides in the Great Bitter Lake. This characteristic is not progressive but limited to a very few individuals. The rapid transition of the gonads from one cycle to the next in spent stage has been suggested as the reason for the presence of low frequencies of hermaphroditism.

Pages: 121-126  |  528 Views  16 Downloads

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How to cite this article:
Kandeel El-Sayed Kandeel. First record of sex reverses in two Indo-Pacific mytildes (Brachidontes variabilis and Modiolus arcutulus) in the Great Bitter Lake, Egypt. Int J Fish Aquat Stud 2017;5(6):121-126.
International Journal of Fisheries and Aquatic Studies