التأثيرات المحتملة للطفيل هيماتودينيم بريزي على الجهاز التناسلي الذكري لسرطان البحر السابح بورتيونس سيجنيس القاطن بالبحيرة المرة الكبرى، مصر
; Potential Impacts of Hematodinium perezi on the Male Reproductive System of Portunus segnis from the Great Bitter Lake, Egypt; Rady A., Abu Jabel O.M.; 2023; Journal article;
Journal of Marine Science ; ISSN: 1012-8840 ; eISSN: 1658-4325
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From October 2020 to September 2021, researchers examined various facets of the reproductive biology of male Portunus segnis crabs caught in the fishing port of the Great Bitter Lake on Egypt’s Suez Canal coast. The male reproductive system of P. segnis consists of two testes, a commissure, two vas deferentia, and two ejaculatory ducts internally. It is bilaterally symmetrical and creamy to whitish in appearance. The three components of the vas deferentia were the anterior vas deferens (AVD), median vas deferens (MVD) and posterior vas deferens (PVD). There are three stages of male gonad development: Immature, maturing and mature. For light microscopic examinations, tissues from the testis, (AVD), (MVD), (PVD) and ejaculatory duct were fixed in Bouin’s solution. The blue swimming crab P. segnis is an important host of parasitic dinoflagellates from the genus Hematodinium. The commercial supply of P. segnis has been harmed by outbreaks of these parasites. Hematodinium perezi, a dinoflagellate, had no discernible impact on the gonad growth and development of its host Portunus segnis. For uninfected and infected males, the size at first sexual maturity was estimated to be 66.3 and 67.3 mm carapace width (CW), respectively.
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Anterior vas deferens, Ejaculatory duct, Median vas deferens, Posterior vas deferens, Size at first sexual maturity, Testes, الوعاء الثاقل الأمامى، الوعاء الناتل المتوسط، الوعاء الناقل الڭلفي، الثناة القاذفة، الحجم عند بداية النضج الجنسي
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