Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)

Andrioli, Guilherme Casemiro [UNESP]; Paschoal, Lucas Rezende Penido [UNESP]; Davanso, Thiago Maia [UNESP]; Costa, Rogério Caetano [UNESP]; Zara, Fernando José [UNESP]

Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)

The seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) is an important fishing resource and is intensely exploited in South America. Therefore, for the correct and sustainable use of this fishing resource, it is necessary to employ multiple tools to determine the sexual maturity of this species, a ke...

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Autores:	Andrioli, Guilherme Casemiro [UNESP], Paschoal, Lucas Rezende Penido [UNESP], Davanso, Thiago Maia [UNESP], Costa, Rogério Caetano [UNESP], Zara, Fernando José [UNESP]
Tipo de recurso:	artículo
Estado:	Versión publicada
Fecha de publicación:	2024
País:	Brasil
Institución:	Universidade Estadual Paulista (UNESP)
Repositorio:	Repositório Institucional da UNESP
Idioma:	inglés
OAI Identifier:	oai:repositorio.unesp.br:11449/298373
Acceso en línea:	http://dx.doi.org/10.1016/j.rsma.2024.103489 https://hdl.handle.net/11449/298373
Access Level:	acceso abierto
Palabra clave:	Histology Male reproductive system Multidisciplinary approach Penaeidae SEM

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network_acronym_str	BR
network_name_str	Brasil
repository_id_str
dc.title.none.fl_str_mv	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
title	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
spellingShingle	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) Andrioli, Guilherme Casemiro [UNESP] Histology Male reproductive system Multidisciplinary approach Penaeidae SEM
title_short	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
title_full	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
title_fullStr	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
title_full_unstemmed	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
title_sort	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)
dc.creator.none.fl_str_mv	Andrioli, Guilherme Casemiro [UNESP] Paschoal, Lucas Rezende Penido [UNESP] Davanso, Thiago Maia [UNESP] Costa, Rogério Caetano [UNESP] Zara, Fernando José [UNESP]
author	Andrioli, Guilherme Casemiro [UNESP]
author_facet	Andrioli, Guilherme Casemiro [UNESP] Paschoal, Lucas Rezende Penido [UNESP] Davanso, Thiago Maia [UNESP] Costa, Rogério Caetano [UNESP] Zara, Fernando José [UNESP]
author_role	author
author2	Paschoal, Lucas Rezende Penido [UNESP] Davanso, Thiago Maia [UNESP] Costa, Rogério Caetano [UNESP] Zara, Fernando José [UNESP]
author2_role	author author author author
dc.contributor.none.fl_str_mv	Universidade Estadual Paulista (UNESP) FIT-MG
dc.subject.por.fl_str_mv	Histology Male reproductive system Multidisciplinary approach Penaeidae SEM
topic	Histology Male reproductive system Multidisciplinary approach Penaeidae SEM
description	The seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) is an important fishing resource and is intensely exploited in South America. Therefore, for the correct and sustainable use of this fishing resource, it is necessary to employ multiple tools to determine the sexual maturity of this species, a key condition for the maintenance of this important economic resource. In this work, we evaluated the morphological (development of secondary sexual characteristics) and physiological (maturation of the reproductive system) sexual maturities in males of X. kroyeri, through the macroscopic and microscopic description of the testes, vasa deferentia and petasma from the juvenile stage to the adult stage. The male reproductive system of seabob shrimp is a paired organ with testes connected to a vasa deferentia, which is anatomically differentiated into three regions: proximal (PVD) (subdivided into anterior, or PVDa, and posterior, or PVDp), medial (MVD) and distal (DVD), the latter region being associated with the terminal ampulla. The morphological maturity of males preceded physiological maturity, meaning the petasma must be formed for the production of seminal fluid and the formation of spermatozoa contained in spermatophores to occur. Petasma formation occurred in the size class 12 ┤13 mm CL, while the production of spermatozoa and spermatophores occurred from 14.1 mm CL. These spermatophores are completely formed in the PVDp and are glycoproteic. Spermatophores are stored in the simple tube of the MVD and DVD. In the DVD, there is an accessory gland forming the ampulla, which produces part of the seminal fluid. The deposition of spermatophores occurs internally in the female's thelycum with the aid of the petasma, which deposits the seminal fluid in the seminal receptacles or spermathecae. At the end of this process, the thelycum is sealed by a secretion from the accessory gland in the male's ampulla, forming a sperm plug. Based on the results obtained here, we recommend that only physiologically mature males of X. kroyeri (> 14.1 mm CL) should be exploited by artisanal fisheries and that macroscopic inspection of the ampulla to determine physiological maturity in this species should be avoided, as this region of the DVD has the accessory gland as its main part, a structure responsible for forming the sperm plug, which does not contain spermatozoa or participate in the formation of spermatophores.
publishDate	2024
dc.date.none.fl_str_mv	2024-07-01 2025-04-29T18:36:58Z
dc.type.status.fl_str_mv	info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv	info:eu-repo/semantics/article
format	article
status_str	publishedVersion
dc.identifier.uri.fl_str_mv	http://dx.doi.org/10.1016/j.rsma.2024.103489 Regional Studies in Marine Science, v. 73. 2352-4855 https://hdl.handle.net/11449/298373 10.1016/j.rsma.2024.103489 2-s2.0-85189788834
url	http://dx.doi.org/10.1016/j.rsma.2024.103489 https://hdl.handle.net/11449/298373
identifier_str_mv	Regional Studies in Marine Science, v. 73. 2352-4855 10.1016/j.rsma.2024.103489 2-s2.0-85189788834
dc.language.iso.fl_str_mv	eng
language	eng
dc.relation.none.fl_str_mv	Regional Studies in Marine Science
dc.rights.driver.fl_str_mv	info:eu-repo/semantics/openAccess
eu_rights_str_mv	openAccess
dc.source.none.fl_str_mv	Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP
instname_str	Universidade Estadual Paulista (UNESP)
instacron_str	UNESP
institution	UNESP
reponame_str	Repositório Institucional da UNESP
collection	Repositório Institucional da UNESP
repository.name.fl_str_mv	Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv	repositoriounesp@unesp.br
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spelling	Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)HistologyMale reproductive systemMultidisciplinary approachPenaeidaeSEMThe seabob shrimp Xiphopenaeus kroyeri (Heller, 1862) is an important fishing resource and is intensely exploited in South America. Therefore, for the correct and sustainable use of this fishing resource, it is necessary to employ multiple tools to determine the sexual maturity of this species, a key condition for the maintenance of this important economic resource. In this work, we evaluated the morphological (development of secondary sexual characteristics) and physiological (maturation of the reproductive system) sexual maturities in males of X. kroyeri, through the macroscopic and microscopic description of the testes, vasa deferentia and petasma from the juvenile stage to the adult stage. The male reproductive system of seabob shrimp is a paired organ with testes connected to a vasa deferentia, which is anatomically differentiated into three regions: proximal (PVD) (subdivided into anterior, or PVDa, and posterior, or PVDp), medial (MVD) and distal (DVD), the latter region being associated with the terminal ampulla. The morphological maturity of males preceded physiological maturity, meaning the petasma must be formed for the production of seminal fluid and the formation of spermatozoa contained in spermatophores to occur. Petasma formation occurred in the size class 12 ┤13 mm CL, while the production of spermatozoa and spermatophores occurred from 14.1 mm CL. These spermatophores are completely formed in the PVDp and are glycoproteic. Spermatophores are stored in the simple tube of the MVD and DVD. In the DVD, there is an accessory gland forming the ampulla, which produces part of the seminal fluid. The deposition of spermatophores occurs internally in the female's thelycum with the aid of the petasma, which deposits the seminal fluid in the seminal receptacles or spermathecae. At the end of this process, the thelycum is sealed by a secretion from the accessory gland in the male's ampulla, forming a sperm plug. Based on the results obtained here, we recommend that only physiologically mature males of X. kroyeri (> 14.1 mm CL) should be exploited by artisanal fisheries and that macroscopic inspection of the ampulla to determine physiological maturity in this species should be avoided, as this region of the DVD has the accessory gland as its main part, a structure responsible for forming the sperm plug, which does not contain spermatozoa or participate in the formation of spermatophores.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Invertebrate Morphology Laboratory (IML) Department of Biology Agricultural and Veterinary School of Jaboticabal and Aquaculture Center of UNESP (CAUNESP) São Paulo State University (UNESP), São PauloFaculdades de Inovação e Tecnologia de Minas Gerais FIT-MG, Minas GeraisLaboratory of Biology of Marine and Freshwater Shrimps (LABCAM) Department of Biological Sciences Faculty of Sciences São Paulo State University (UNESP), São PauloPostgraduate Course in Biological Sciences (Zoology)/Ecology Evolution and Biodiversity (EcoEvoBio) São Paulo State University (UNESP) Biosciences Institute of Rio Claro, São PauloInvertebrate Morphology Laboratory (IML) Department of Biology Agricultural and Veterinary School of Jaboticabal and Aquaculture Center of UNESP (CAUNESP) São Paulo State University (UNESP), São PauloLaboratory of Biology of Marine and Freshwater Shrimps (LABCAM) Department of Biological Sciences Faculty of Sciences São Paulo State University (UNESP), São PauloPostgraduate Course in Biological Sciences (Zoology)/Ecology Evolution and Biodiversity (EcoEvoBio) São Paulo State University (UNESP) Biosciences Institute of Rio Claro, São PauloFAPESP: 2018/13685–5FAPESP: 2022/09727-0CAPES: 23038.004309/2014-5CNPq: IC#184728/2013-4FAPESP: JP 2005#04707–5CNPq: PQ #304368/2022-9CNPq: PQ1D #308324/2023-4CNPq: PQ2# 309298/2020–2Universidade Estadual Paulista (UNESP)FIT-MG2025-04-29T18:36:58Z2024-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1016/j.rsma.2024.103489Regional Studies in Marine Science, v. 73.2352-4855https://hdl.handle.net/11449/29837310.1016/j.rsma.2024.1034892-s2.0-85189788834Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRegional Studies in Marine Scienceinfo:eu-repo/semantics/openAccessAndrioli, Guilherme Casemiro [UNESP]Paschoal, Lucas Rezende Penido [UNESP]Davanso, Thiago Maia [UNESP]Costa, Rogério Caetano [UNESP]Zara, Fernando José [UNESP]2025-11-26T17:36:52Zoai:repositorio.unesp.br:11449/298373Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestrepositoriounesp@unesp.bropendoar:29462025-11-26T17:36:52Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
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Does morphological maturity anticipate physiological maturity? The pattern of sexual maturity in males of the seabob shrimp Xiphopenaeus kroyeri (Heller, 1862)

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