Investigation of Male External Genitalia Tracts of Brackish waters Crabs, Callinectes amnicola, (De Rochebrune, 1883) from Côte d’Ivoire | Chapter 8 | Research Aspects in Biological Science Vol. 3

The Crustacean Callinectes amnicola is mostly found in West Africa. Because to overfishing, the crab Callinectes amnicola, which is the most exploited species in Côte d'Ivoire, is on the verge of extinction. In order to ease this predicament, natural stock or breeding management has become critical. These characteristics need a knowledge of the reproductive organs' structure and physiology. The purpose of this study is to learn more about the morphology and function of the external organs of the reproductive system. Organs were identified using either the naked eye or a binocular magnifier. Microscopic exams were carried out using histological methods. According to macroscopic studies, male sexual development is split into seven phases. In both juvenile and mature males, the penes wall is made up of a connective tissue layer, a muscle layer, an inner columnar and ciliated epithelium, and a somewhat large lumen. Callinectes amnicola has two types of pleopods or gonopods: tubular long initial gonopods (G1) and shorter second pleopods (G2). Coxopodite XIII, a subterminal segment, and a tube-like terminal segment or telopodite make comprise the first gonopod (G1). There are apical and basal apertures in the tube or groove. A calcified wall connects gonopods and surrounds bundles of striated muscle fibres and glandular areas. The second gonopod is made up of the coxopodite XIV, a medial portion, and the apical spine (G2). It is inserted into the posterior foramen of the first pleopod and propels semen and spermatophores into the groove of the first pleopod. The physiology of the external tract was investigated. The penis and initial pleopods are the mechanical organs of copulation.

Author(s) Details:

Marie Anne Kayi d’Almeida,
Laboratory of Cell Biology, UFR Biosciences, University Félix Houphouët Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Komenan Daouda Kouassi,
Laboratory of Cell Biology, UFR Biosciences, University Félix Houphouët Boigny, 22 BP 582 Abidjan 22, Côte d’Ivoire.

Please see the link here: https://stm.bookpi.org/RABS-V3/article/view/7050