Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea
A study of the age, growth and population structure of Acanthocardia tuberculata from the eastern Adriatic Sea was carried out. The condition index analysis identified one reproductive peak, which occurred between April and May, for a population of A. tuberculata in the Cetina River estuary with u...
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| Format: | Article |
| Language: | English |
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Consejo Superior de Investigaciones Científicas
2012-03-01
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| Series: | Scientia Marina |
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| Online Access: | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1310 |
| _version_ | 1818938961170530304 |
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| author | Melita Peharda Daria Ezgeta-Balić Margita Radman Nela Sinjkević Nedo Vrgoč Igor Isajlović |
| author_facet | Melita Peharda Daria Ezgeta-Balić Margita Radman Nela Sinjkević Nedo Vrgoč Igor Isajlović |
| author_sort | Melita Peharda |
| collection | DOAJ |
| description | A study of the age, growth and population structure of Acanthocardia tuberculata from the eastern Adriatic Sea was carried out. The condition index analysis identified one reproductive peak, which occurred between April and May, for a population of A. tuberculata in the Cetina River estuary with uni-modal recruitment. Annual growth rings on the external shell surface consisted of a dark ring deposited during the summer-autumn period and a light ring deposited during winter-spring. This was validated by acetate peels of shell sections and marginal increment analysis. Shell lengths of aged specimens ranged from 19.7 to 62.9 mm (mean = 41.21±8.96 mm). Estimated ages ranged from 5 months to 11 years, with mean values of 2.1, 2.4 and 3.1 years for Rab Island, Pag Bay and the Cetina River estuary respectively. Shell deposition is fastest during the first two years of life and significantly decreases after the 4th year. The growth parameters L∞ and k were estimated using the Gulland-Holt method and by fitting length at age data to a von Bertalanffy growth curve. Values of L∞ ranged from 52.6 mm (Rab Island) to 59.7 mm (Pag Bay). The growth constant k showed greater variations (0.49 to 0.77 year-1), while growth performance index values (ø’) ranged from 3.13 to 3.36. |
| first_indexed | 2024-12-20T06:16:10Z |
| format | Article |
| id | doaj.art-6281e61e33e44b6aa059df1a3b9e5855 |
| institution | Directory Open Access Journal |
| issn | 0214-8358 1886-8134 |
| language | English |
| last_indexed | 2024-12-20T06:16:10Z |
| publishDate | 2012-03-01 |
| publisher | Consejo Superior de Investigaciones Científicas |
| record_format | Article |
| series | Scientia Marina |
| spelling | doaj.art-6281e61e33e44b6aa059df1a3b9e58552022-12-21T19:50:32ZengConsejo Superior de Investigaciones CientíficasScientia Marina0214-83581886-81342012-03-01761596610.3989/scimar.03257.21A1296Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic SeaMelita Peharda0Daria Ezgeta-Balić1Margita Radman2Nela Sinjkević3Nedo Vrgoč4Igor Isajlović5Institute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaInstitute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaInstitute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaInstitute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaInstitute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaInstitute of Oceanography and Fisheries, Šetalište Ivana MeštrovićaA study of the age, growth and population structure of Acanthocardia tuberculata from the eastern Adriatic Sea was carried out. The condition index analysis identified one reproductive peak, which occurred between April and May, for a population of A. tuberculata in the Cetina River estuary with uni-modal recruitment. Annual growth rings on the external shell surface consisted of a dark ring deposited during the summer-autumn period and a light ring deposited during winter-spring. This was validated by acetate peels of shell sections and marginal increment analysis. Shell lengths of aged specimens ranged from 19.7 to 62.9 mm (mean = 41.21±8.96 mm). Estimated ages ranged from 5 months to 11 years, with mean values of 2.1, 2.4 and 3.1 years for Rab Island, Pag Bay and the Cetina River estuary respectively. Shell deposition is fastest during the first two years of life and significantly decreases after the 4th year. The growth parameters L∞ and k were estimated using the Gulland-Holt method and by fitting length at age data to a von Bertalanffy growth curve. Values of L∞ ranged from 52.6 mm (Rab Island) to 59.7 mm (Pag Bay). The growth constant k showed greater variations (0.49 to 0.77 year-1), while growth performance index values (ø’) ranged from 3.13 to 3.36.http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1310cardiidaemediterraneanagegrowthpopulation structurelongevitycondition index |
| spellingShingle | Melita Peharda Daria Ezgeta-Balić Margita Radman Nela Sinjkević Nedo Vrgoč Igor Isajlović Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea Scientia Marina cardiidae mediterranean age growth population structure longevity condition index |
| title | Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea |
| title_full | Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea |
| title_fullStr | Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea |
| title_full_unstemmed | Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea |
| title_short | Age, growth and population structure of Acanthocardia tuberculata (Bivalvia: Cardiidae) in the eastern Adriatic Sea |
| title_sort | age growth and population structure of acanthocardia tuberculata bivalvia cardiidae in the eastern adriatic sea |
| topic | cardiidae mediterranean age growth population structure longevity condition index |
| url | http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/1310 |
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