Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea
The present study investigated the reproductive biology of European anchovies obtained seasonally from fishermen in İzmir Bay (Aegean Sea). The total length range of the investigated individuals was 9.0 – 15.7 cm. Of the 750 samples in which sex was determined, 34% were males, and 66% were females,...
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Sciendo
2024-04-01
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| Series: | Oceanological and Hydrobiological Studies |
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| Online Access: | https://doi.org/10.26881/oahs-2024.1.02 |
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| author | Taylan Burcu Bayhan Bahar |
| author_facet | Taylan Burcu Bayhan Bahar |
| author_sort | Taylan Burcu |
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| description | The present study investigated the reproductive biology of European anchovies obtained seasonally from fishermen in İzmir Bay (Aegean Sea). The total length range of the investigated individuals was 9.0 – 15.7 cm. Of the 750 samples in which sex was determined, 34% were males, and 66% were females, resulting in a female-to-male ratio of 1.91:1. The first maturation length was determined to be 10.47 cm for females and 9.95 cm for males. Based on the total values of the gonadosomatic index, it was concluded that the reproductive period of the species falls in the summer season. The batch fecundity of the species ranged from 2.123 to 6.951 oocytes, and the fecundity–length relationship was expressed as F = 1134.4TL – 10034 (R2 = 0.84). Histological examination of the female ovaries revealed the presence of oocytes at different stages of development, indicating multiple spawning during the reproductive season. |
| format | Article |
| id | doaj-art-850df1ddd5b64d3aaa4e418827251992 |
| institution | Kabale University |
| issn | 1897-3191 |
| language | English |
| publishDate | 2024-04-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Oceanological and Hydrobiological Studies |
| spelling | doaj-art-850df1ddd5b64d3aaa4e4188272519922025-01-20T11:10:24ZengSciendoOceanological and Hydrobiological Studies1897-31912024-04-0153171510.26881/oahs-2024.1.02Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean SeaTaylan Burcu0Bayhan Bahar1Ege University, Faculty of Fisheries, İzmir, TürkiyeEge University, Faculty of Fisheries, İzmir, TürkiyeThe present study investigated the reproductive biology of European anchovies obtained seasonally from fishermen in İzmir Bay (Aegean Sea). The total length range of the investigated individuals was 9.0 – 15.7 cm. Of the 750 samples in which sex was determined, 34% were males, and 66% were females, resulting in a female-to-male ratio of 1.91:1. The first maturation length was determined to be 10.47 cm for females and 9.95 cm for males. Based on the total values of the gonadosomatic index, it was concluded that the reproductive period of the species falls in the summer season. The batch fecundity of the species ranged from 2.123 to 6.951 oocytes, and the fecundity–length relationship was expressed as F = 1134.4TL – 10034 (R2 = 0.84). Histological examination of the female ovaries revealed the presence of oocytes at different stages of development, indicating multiple spawning during the reproductive season.https://doi.org/10.26881/oahs-2024.1.02european anchovyengraulis encrasicolusbatch fecundityfirst length maturityi̇zmir bayaegean sea |
| spellingShingle | Taylan Burcu Bayhan Bahar Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea Oceanological and Hydrobiological Studies european anchovy engraulis encrasicolus batch fecundity first length maturity i̇zmir bay aegean sea |
| title | Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea |
| title_full | Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea |
| title_fullStr | Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea |
| title_full_unstemmed | Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea |
| title_short | Reproductive biology of the European anchovy Engraulis encrasicolus (Linnaeus, 1758) in the Turkish Aegean Sea |
| title_sort | reproductive biology of the european anchovy engraulis encrasicolus linnaeus 1758 in the turkish aegean sea |
| topic | european anchovy engraulis encrasicolus batch fecundity first length maturity i̇zmir bay aegean sea |
| url | https://doi.org/10.26881/oahs-2024.1.02 |
| work_keys_str_mv | AT taylanburcu reproductivebiologyoftheeuropeananchovyengraulisencrasicoluslinnaeus1758intheturkishaegeansea AT bayhanbahar reproductivebiologyoftheeuropeananchovyengraulisencrasicoluslinnaeus1758intheturkishaegeansea |