Academic Journal
Temporal and spatial genetic variation of Engraulis encrasicolus in the Adriatic Sea
| العنوان: | Temporal and spatial genetic variation of Engraulis encrasicolus in the Adriatic Sea |
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| المؤلفون: | MALAVOLTI, SARA, RUGGERI, PAOLO, FIORAVANTI, TATIANA, TIČINA, VJEKOSLAV, COSTANTINI, ILARIA, DE FELICE, ANDREA, SPLENDIANI, ANDREA, GAŠPAREVIĆ, DENIS, CAPUTO BARUCCHI, VINCENZO, LEONORI, IOLE |
| المصدر: | Mediterranean Marine Science; Vol 22, No 4 (2021): Special Issue; 843-857 ; 1791-6763 ; 1108-393X |
| بيانات النشر: | Hellenic Centre for Marine Research |
| سنة النشر: | 2021 |
| المجموعة: | EKT ePublishing (National Documentation Centre, Greece) / Εθνικό Κέντρο Τεκμηρίωσης) |
| مصطلحات موضوعية: | Engraulis encrasicolus, genetic diversity, population structure, Adriatic Sea |
| جغرافية الموضوع: | Mediterranean Sea, Adriatic Sea |
| Time: | Mediterranean Sea, Adriatic Sea, 2012, 2015 |
| الوصف: | Small pelagic fish play a key role in the marine ecosystem, controlling predator abundance and regulating primary production rates by foraging on plankton. Alterations induced at different ecological levels by fishing activities and/or environmental changes are affecting the reproductive success of several small pelagics, including European anchovy (Engraulis encrasicolus), which is a major target of Adriatic mid-water trawl and purse-seine fisheries. In this study, we evaluated short-term genetic changes of the species in the Adriatic Sea by applying molecular markers in samples of three generations of European anchovy. Thirteen polymorphic microsatellite markers and a mitochondrial gene were used in cohorts of adults and larvae, collected at three sites in the north-east, central, and southern Adriatic Sea in 2015. Furthermore, temporal, and spatial genetic variation was assessed by comparing the above dataset with a sample of adult anchovy collected in 2012 at three sites close to those sampled in 2015. Expected heterozygosity was higher in adults than in larvae, suggesting a loss of genetic diversity and uneven reproduction. In addition, a comparison of the two datasets demonstrated a change in the anchovy population structure from 2012 to 2015. In the reproductive event of 2015, this change led the two main genetic stocks described in the Adriatic Sea to merge into one. We suggest that the population structure of European anchovy in the north-eastern Adriatic may be influenced by changes in environmental parameters and by periodic alterations in the temporal pattern of population connectivity. |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| Relation: | https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/25990/22651; https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/25990/22652; https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/25990 |
| DOI: | 10.12681/mms.25990 |
| الاتاحة: | https://ejournals.epublishing.ekt.gr/index.php/hcmr-med-mar-sc/article/view/25990 https://doi.org/10.12681/mms.25990 |
| Rights: | Copyright (c) 2021 Mediterranean Marine Science |
| رقم الانضمام: | edsbas.7882FA47 |
| قاعدة البيانات: | BASE |
| DOI: | 10.12681/mms.25990 |
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