Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea)
The study focused on the macroscopic, histological, and biometric analysis of European hake females in GSA 17 (Central-North Adriatic Sea). From 2013 to 2015, 976 females were collected and analyzed monthly. Though females in spawning conditions were found during the whole year, the trend of GSI sho...
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doaj-8b4a81bf802a4299aa5156803db38a172021-04-07T23:01:23ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-04-01938938910.3390/jmse9040389Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea)Michela Candelma0Luca Marisaldi1Daniela Bertotto2Giuseppe Radaelli3Giorgia Gioacchini4Alberto Santojanni5Sabrina Colella6Oliana Carnevali7Laboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, ItalyLaboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, ItalyDepartment of Comparative Biomedicine and Food Science, University of Padua, 35122 Padova, ItalyDepartment of Comparative Biomedicine and Food Science, University of Padua, 35122 Padova, ItalyLaboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, ItalyNational Research Council (CNR), Institute of Biological Resources and Marine Biotechnologies (IRBIM), 60125 Ancona, ItalyNational Research Council (CNR), Institute of Biological Resources and Marine Biotechnologies (IRBIM), 60125 Ancona, ItalyLaboratory of Developmental and Reproductive Biology, DiSVA, Università Politecnica delle Marche, 60131 Ancona, ItalyThe study focused on the macroscopic, histological, and biometric analysis of European hake females in GSA 17 (Central-North Adriatic Sea). From 2013 to 2015, 976 females were collected and analyzed monthly. Though females in spawning conditions were found during the whole year, the trend of GSI showed a peak of the reproductive season from April to July in 2014 and 2015. HSI and <i>K<sub>n</sub></i> reached the highest values in September, after the spawning peaks. In 2013, the trend of these indices did not highlight an evident peak, probably due to an adverse event that occurred in the previous winter in the Adriatic shelf. The length at first maturity (L<sub>50</sub>) was estimated by macroscopic and histological approaches, resulting in 30.81 cm for the macroscopical length and 33.73 cm for the histological length; both values are higher than the current catching legal size. For the first time in this area, batch and relative fecundity were estimated. Relative fecundity was similar to the Mediterranean and the Atlantic stocks, whereas batch fecundity values were lower compared to other fishing grounds. Overall, the analysis of reproductive parameters plays a fundamental role in the sustainable management of this resource in an area as overfished as the Central-North Adriatic Sea.https://www.mdpi.com/2077-1312/9/4/389European hake<i>Merluccius merluccius</i>fecunditysomatic indicesAdriatic SeaL<sub>50</sub> |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Michela Candelma Luca Marisaldi Daniela Bertotto Giuseppe Radaelli Giorgia Gioacchini Alberto Santojanni Sabrina Colella Oliana Carnevali |
spellingShingle |
Michela Candelma Luca Marisaldi Daniela Bertotto Giuseppe Radaelli Giorgia Gioacchini Alberto Santojanni Sabrina Colella Oliana Carnevali Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) Journal of Marine Science and Engineering European hake <i>Merluccius merluccius</i> fecundity somatic indices Adriatic Sea L<sub>50</sub> |
author_facet |
Michela Candelma Luca Marisaldi Daniela Bertotto Giuseppe Radaelli Giorgia Gioacchini Alberto Santojanni Sabrina Colella Oliana Carnevali |
author_sort |
Michela Candelma |
title |
Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) |
title_short |
Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) |
title_full |
Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) |
title_fullStr |
Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) |
title_full_unstemmed |
Aspects of Reproductive Biology of the European Hake (<i>Merluccius merluccius</i>) in the Northern and Central Adriatic Sea (GSA 17-Central Mediterranean Sea) |
title_sort |
aspects of reproductive biology of the european hake (<i>merluccius merluccius</i>) in the northern and central adriatic sea (gsa 17-central mediterranean sea) |
publisher |
MDPI AG |
series |
Journal of Marine Science and Engineering |
issn |
2077-1312 |
publishDate |
2021-04-01 |
description |
The study focused on the macroscopic, histological, and biometric analysis of European hake females in GSA 17 (Central-North Adriatic Sea). From 2013 to 2015, 976 females were collected and analyzed monthly. Though females in spawning conditions were found during the whole year, the trend of GSI showed a peak of the reproductive season from April to July in 2014 and 2015. HSI and <i>K<sub>n</sub></i> reached the highest values in September, after the spawning peaks. In 2013, the trend of these indices did not highlight an evident peak, probably due to an adverse event that occurred in the previous winter in the Adriatic shelf. The length at first maturity (L<sub>50</sub>) was estimated by macroscopic and histological approaches, resulting in 30.81 cm for the macroscopical length and 33.73 cm for the histological length; both values are higher than the current catching legal size. For the first time in this area, batch and relative fecundity were estimated. Relative fecundity was similar to the Mediterranean and the Atlantic stocks, whereas batch fecundity values were lower compared to other fishing grounds. Overall, the analysis of reproductive parameters plays a fundamental role in the sustainable management of this resource in an area as overfished as the Central-North Adriatic Sea. |
topic |
European hake <i>Merluccius merluccius</i> fecundity somatic indices Adriatic Sea L<sub>50</sub> |
url |
https://www.mdpi.com/2077-1312/9/4/389 |
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