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Reproduction of the Blue Jack Mackerel, Trachurus picturatus, in Western Portugal: Microscopic gonad analysis reveals indeterminate fecundity and skipped spawning patterns

2022Journal article Open access
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dc.contributor.authorNeves, Ana
dc.contributor.authorSequeira, Vera
dc.contributor.authorVieira, Ana Rita
dc.contributor.authorSilva, Elisabete
dc.contributor.authorSilva, Frederica
dc.contributor.authorDuarte, Ana Marta
dc.contributor.authorMendes, Susana
dc.contributor.authorGanhão, Rui
dc.contributor.authorAssis, Carlos
dc.contributor.authorRebelo, Rui
dc.contributor.authorMagalhães, Maria Filomena
dc.contributor.authorGil, Maria M
dc.contributor.authorGordo, Leonel Serrano
dc.date.accessioned2023-08-25T09:35:19Z
dc.date.available2023-08-25T09:35:19Z
dc.date.issued2022
dc.descriptionThis study was partially supported by the European Maritime and Fisheries Fund MAR2020 project “VALOREJET: Valorização de espécies rejeitadas e de baixo valor comercial”, MAR- 01.03.01-FEAMP-0003 and by Fundação para a Ciência e Tecnologia through research contracts attributed to Vera Sequeira (CEECIND/02705/2017) and Ana Rita Vieira (CEECIND/01528/2017) and strategic project UIBD/04292/2020.pt_PT
dc.description.abstractBlue jack mackerel, Trachurus picturatus, is the fifth most landed fish species in mainland Portugal, but information on its reproductive biology is scarce. From September 2018 to August 2019, 626 specimens were collected from commercial vessels to clarify the reproductive strategy of the T. picturatus population off the west coast of Portugal. The proportion and length range of males and females were similar. Only three of the specimens collected were categorized as immature, indicating that the fish caught in the fishery are primarily mature. The spawning season lasted from late January until the end of March, with gonadosomatic indices being similar for males and females. Fecundity was indeterminate, and estimated batch fecundity ranged between 6,798 (at 25.4 cm TL) and 302,358 oocytes (at 33.8 cm TL). The low number of females showing direct evidence of imminent or recent spawning suggests a low number of spawning events. In addition, 12.7% of females were considered non-reproductive due to ovary abnormalities including parasitic infection by Kudoa species, atretic structures and skipped spawning events. This study highlights the importance of accounting for skipped spawning events and ovary abnormalities in the management of species fisheries.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationNeves A, Sequeira V, Vieira AR, Silva E, Silva F, Duarte AM, Mendes S, Ganhão R, Assis C, Rebelo R, Magalhães MF, Gil MM, Gordo LS. 2022. Reproduction of the blue jack mackerel, Trachurus picturatus, in western Portugal: microscopic gonad analysis reveals indeterminate fecundity and skipped spawning patterns. Zool Stud 61:41. doi:10.6620/ZS.2022.61-41.pt_PT
dc.identifier.doi10.6620/ZS.2022.61-41pt_PT
dc.identifier.issn1810-522X
dc.identifier.urihttp://hdl.handle.net/10400.8/8739
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherAcademia Sinica, Taiwanpt_PT
dc.relationNot Available
dc.relationNot Available
dc.subjectCarangidaept_PT
dc.subjectLow-valued fishpt_PT
dc.subjectSkipped spawningpt_PT
dc.subjectFecunditypt_PT
dc.subjectPortugalpt_PT
dc.titleReproduction of the Blue Jack Mackerel, Trachurus picturatus, in Western Portugal: Microscopic gonad analysis reveals indeterminate fecundity and skipped spawning patternspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNot Available
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F02705%2F2017%2FCP1387%2FCT0042/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F01528%2F2017%2FCP1387%2FCT0040/PT
oaire.citation.issue41pt_PT
oaire.citation.titleZoological Studiespt_PT
oaire.citation.volume61pt_PT
oaire.fundingStreamCEEC IND 2017
oaire.fundingStreamCEEC IND 2017
person.familyNameNeves
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person.familyNameSilva
person.familyNameCardoso Duarte
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person.familyNameManeta Ganhão
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person.givenNameFrederica
person.givenNameAna Marta
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person.givenNameRui Manuel
person.givenNameCarlos
person.givenNameRui Miguel
person.givenNameMaria Filomena
person.givenNameMaria M
person.givenNameLeonel
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project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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