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Histology of Tritia mutabilis gonads: using reproductive biology to support sustainable fishery management ArchiMer
Mallet, Alicia; Jouvenel, Jean-yves; Broyon, Morgane; Pirot, Nelly; Geffroy, Benjamin.
The mutable nassa, Tritia mutabilis, a marine gastropod that is widely exploited on the Adriatic coast is an important source of income for small-scale fishermen in the Mediterranean Sea, particularly in the Gulf of Lion. However, the lack of knowledge on the ecology and biology of this species limits our capacities to propose and produce an effective management plan. As a result, stocks are currently declining, especially in Italy. In order to optimize a management plan for this fishery, we designed a study to better characterize the reproductive biology of T. mutabilis, using gonad histology and performing a regular monitoring of population size frequency. The average shell height of individuals during the breeding period was 24 ± 2.7mm for males and 30...
Tipo: Text Palavras-chave: Tritia mutabilis; Gonad histology; Gonochoric species; Size at first maturity; Fisheries management.
Ano: 2021 URL: https://archimer.ifremer.fr/doc/00686/79831/82637.pdf
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Reproductive biology of Parona signata (Actinopterygii: Carangidae), a valuable economic resource, in the coastal area of Mar del Plata, Buenos Aires, Argentina Neotropical Ichthyology
Bianchi,Santiago Julián; González-Castro,Mariano.
ABSTRACT The reproductive biology and life cycle of Parona leatherjacket, Parona signata, present in Mar del Plata (38º 00’S 57º 33’W) coast, was studied. Samples were obtained monthly since January 2018 to February 2019 from the artisanal fishermen and the commercial fleet of Mar del Plata. A histological analysis was carried out and the main biologic-reproductive parameters were estimated: fecundity, oocyte frequency distribution and gonadosomatic index (GSI). Both the macroscopic and microscopic analyses showed reproductive activity in March and November. Mature females were recorded, which showed hydrated oocytes, as was evidenced by the histological procedures. Both, the histological and the oocyte diameter distribution analyses showed the presence of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fecundity; Gonad histology; Life cycle; Pampo solteiro; Reproductive ecology.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252020000300207
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