Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L.
This study focused on novel histological indicators correlated with macroscopic reproductive parameters in male and female European anchovy (Engraulis encrasicolus). Weekly sampling from commercial catches in the Gulf of Béjaïa, Algeria, was conducted to measure microscopic parameters, including sem...
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| Formaat: | Online |
| Taal: | Engels |
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Firenze University Press
2025
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| Online toegang: | ONIX_20250801T173835_9791221505566_284 |
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| _version_ | 1869514857855844352 |
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| author | rahmani, amina Iguer-ouada, Mokrane |
| author_browse | Iguer-ouada, Mokrane rahmani, amina |
| author_facet | rahmani, amina Iguer-ouada, Mokrane |
| author_sort | rahmani, amina |
| collection | Directory of Open Access Books |
| description | This study focused on novel histological indicators correlated with macroscopic reproductive parameters in male and female European anchovy (Engraulis encrasicolus). Weekly sampling from commercial catches in the Gulf of Béjaïa, Algeria, was conducted to measure microscopic parameters, including seminiferous tubule number (STN) and area (STA) in males, and oocyte number (ON) and surface area (OA) in females, independent of maturation stages. Macroscopic reproductive stages were assessed using a standardized five-degree maturity staging system and the gonadosomatic index (GSI). Results showed that OA and ON accurately reflected female maturity stages and exhibited opposing trends with GSI, suggesting their reliability as reproductive activity indicators. Similarly, seminiferous tubules parameters (STN and STA) provided valuable insights into male spermatogenesis and maturation stages. Our findings propose standardized ON/OA and STN/STA measurements as novel, quantitative tools for assessing reproductive activity in anchovy, combining histological and image analysis for a more precise understanding. |
| format | Online |
| id | doab-20.500.12854ir-163399 |
| institution | Directory of Open Access Books |
| language | eng |
| publishDate | 2025 |
| publishDateRange | 2025 |
| publishDateSort | 2025 |
| publisher | Firenze University Press |
| publisherStr | Firenze University Press |
| record_format | ojs |
| spelling | doab-20.500.12854ir-1633992025-08-02T05:06:25Z Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. rahmani, amina Iguer-ouada, Mokrane Engraulis encrasicolus Oogenesis Spermatogenesis GSI Maturity stages This study focused on novel histological indicators correlated with macroscopic reproductive parameters in male and female European anchovy (Engraulis encrasicolus). Weekly sampling from commercial catches in the Gulf of Béjaïa, Algeria, was conducted to measure microscopic parameters, including seminiferous tubule number (STN) and area (STA) in males, and oocyte number (ON) and surface area (OA) in females, independent of maturation stages. Macroscopic reproductive stages were assessed using a standardized five-degree maturity staging system and the gonadosomatic index (GSI). Results showed that OA and ON accurately reflected female maturity stages and exhibited opposing trends with GSI, suggesting their reliability as reproductive activity indicators. Similarly, seminiferous tubules parameters (STN and STA) provided valuable insights into male spermatogenesis and maturation stages. Our findings propose standardized ON/OA and STN/STA measurements as novel, quantitative tools for assessing reproductive activity in anchovy, combining histological and image analysis for a more precise understanding. 2025-08-02T05:06:24Z 2025-08-02T05:06:24Z 2025-08-01T15:58:18Z 2024 chapter ONIX_20250801T173835_9791221505566_284 2975-0288 https://library.oapen.org/handle/20.500.12657/104834 9791221505566 https://directory.doabooks.org/handle/20.500.12854/163399 eng Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques open access image/jpeg Attribution-NonCommercial-ShareAlike 4.0 International https://library.oapen.org/bitstream/20.500.12657/104834/1/43671.pdf Firenze University Press 10.36253/979-12-215-0556-6.26 10.36253/979-12-215-0556-6.26 2ec4474d-93b1-4cfa-b313-9c6019b51b1a 9791221505566 8 Florence open access |
| spellingShingle | Engraulis encrasicolus Oogenesis Spermatogenesis GSI Maturity stages rahmani, amina Iguer-ouada, Mokrane Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title | Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title_full | Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title_fullStr | Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title_full_unstemmed | Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title_short | Chapter Objective quantative parameters to evaluate reproductive activity in Engraulis encrasicolus L. |
| title_sort | chapter objective quantative parameters to evaluate reproductive activity in engraulis encrasicolus l |
| topic | Engraulis encrasicolus Oogenesis Spermatogenesis GSI Maturity stages |
| topic_facet | Engraulis encrasicolus Oogenesis Spermatogenesis GSI Maturity stages |
| url | ONIX_20250801T173835_9791221505566_284 |
| work_keys_str_mv | AT rahmaniamina chapterobjectivequantativeparameterstoevaluatereproductiveactivityinengraulisencrasicolusl AT iguerouadamokrane chapterobjectivequantativeparameterstoevaluatereproductiveactivityinengraulisencrasicolusl |