Functional morphology of the reproductive system and sperm transfer in Stenopus hispidus (Crustacea: Decapoda: Stenopodidea), and their relation to the mating system

dc.creatorGregati, Rafael A.
dc.creatorFransozo, Vivian
dc.creatorLopez, Laura Susana
dc.creatorNegreiros Fransozo, María Lucía
dc.creatorBauer, Raymond
dc.date2014-07
dc.identifierhttp://hdl.handle.net/11336/20526
dc.identifierGregati, Rafael A.; Fransozo, Vivian; Lopez, Laura Susana; Negreiros Fransozo, María Lucía; Bauer, Raymond; Functional morphology of the reproductive system and sperm transfer in Stenopus hispidus (Crustacea: Decapoda: Stenopodidea), and their relation to the mating system; Wiley; Invertebrate Biology; 133; 4; 7-2014; 381-393
dc.identifier1077-8306
dc.identifierCONICET Digital
dc.identifierCONICET
dc.descriptionThe morphology of the reproductive system of a stenopodidean decapod is described here for the first time, with an interpretation of the sperm transfer process. Pairs of adults of Stenopus hispidus were maintained under laboratory conditions to observe reproductive cycles. Mating behavior and sperm transfer were video-recorded for analysis. After copulation, the shrimps were anesthetized and dissected to record the shape and location of the gonads, and pleopod morphology was described and illustrated. The reproductive systems (RS), thoracic sterna, and male and female genitalia were observed by scanning electron microscopy. The male reproductive system was restricted to the cephalothorax and was highly reduced compared with that of other decapods. Only the first pair of pleopods may be involved in the sperm transfer process; there was no appendix masculina on the second pair of pleopods as in many other decapods. The ovaries of prespawning females occupied much of the cephalothorax and reached to the 3rd abdominal segment. The oviducts were short and simple, without structures for sperm storage. We conclude that the male deposits a simple spermatophoric mass onto the posteroventral surface of the female and fertilization occurs externally as mature oocytes are subsequently spawned. This mode of sperm transfer and egg fertilization is ancestral within the decapod suborder Pleocyemata. As in some other animals, the relatively small size of the testes in S. hispidus may be related to the monogamous mating system, which may minimize selection for a large volume of sperm production.
dc.descriptionFil: Gregati, Rafael A.. Universidade Estadual do Centro-Oeste; Brasil
dc.descriptionFil: Fransozo, Vivian. Universidade Estadual do Sudoeste da Bahia; Brasil
dc.descriptionFil: Lopez, Laura Susana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Biodiversidad y Biología Experimental y Aplicada; Argentina
dc.descriptionFil: Negreiros Fransozo, María Lucía. Universidade Estadual Paulista Julio de Mesquita Filho; Brasil
dc.descriptionFil: Bauer, Raymond. University of Louisiana; Estados Unidos
dc.formatapplication/pdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherWiley
dc.relationinfo:eu-repo/semantics/altIdentifier/doi/10.1111/ivb.12067
dc.relationinfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1111/ivb.12067/abstract
dc.rightsinfo:eu-repo/semantics/openAccess
dc.rightshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subjectReproductive Morphology
dc.subjectStenopodidean
dc.subjectShrimp
dc.subjectSperm Transfer
dc.subjecthttps://purl.org/becyt/ford/1.6
dc.subjecthttps://purl.org/becyt/ford/1
dc.titleFunctional morphology of the reproductive system and sperm transfer in Stenopus hispidus (Crustacea: Decapoda: Stenopodidea), and their relation to the mating system
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:ar-repo/semantics/artículo
dc.typeinfo:eu-repo/semantics/publishedVersion


Este ítem pertenece a la siguiente institución