Gametogenic cycle of the rough cockle Acanthocardia tuberculata (Mollusca: Bivalvia) in the M’diq Bay (SW Mediterranean Sea)
| العنوان: | Gametogenic cycle of the rough cockle Acanthocardia tuberculata (Mollusca: Bivalvia) in the M’diq Bay (SW Mediterranean Sea) |
|---|---|
| المؤلفون: | Mostapha Talbaoui, Nadia Rharbi, Miguel B. Gaspar, Afaf Rharrass, Mostapha Kabine |
| المصدر: | Scientia Marina. 80:359-368 |
| بيانات النشر: | Editorial CSIC, 2016. |
| سنة النشر: | 2016 |
| مصطلحات موضوعية: | 0106 biological sciences, education.field_of_study, Acanthocardia tuberculata, biology, Ecology, 010604 marine biology & hydrobiology, Population, Zoology, Aquatic Science, Oceanography, biology.organism_classification, 010603 evolutionary biology, 01 natural sciences, Condition index, Mediterranean sea, Cockle, education, Bay, Sex ratio, Minimum landing size |
| الوصف: | The reproductive cycle of Acanthocardia tuberculata (Linnaeus, 1758) was studied in M’diq Bay. The gonadal development was determined by means of standard histological techniques, mean oocyte diameters and a condition index. Rough cockle is a gonochoric species with synchronous gonadal development and spawning in males and females. The sex ratio obtained was not significantly different to 1:1. Gametogenesis began in late winter (November) coinciding with the temperature drop. In June, with increasing sea water temperature, most of the population was spent and resting oocytes appeared dispersed in the gonad. Resting stage occurred from August to October, during which time sex could not be determined in 100% of the population. A. tuberculata showed a clear seasonality in its gametogenic cycle, with one spawning peak per year in June. Quantitative measurements of 6318 oocyte diameters indicated the patterns of development observed in the qualitative staging. The results obtained revealed the direct influence of temperature on the reproductive cycle. First sexual maturity occurred at 42.77 mm shell length. The information gathered in this study allowed preliminary management measures to be suggested for the fishery of this species, including a closed season during the main spawning season (May-June) and the establishment of a minimum landing size (at least 50 mm shell length) for A. tuberculata from the Moroccan Mediterranean coast. |
| تدمد: | 1886-8134 0214-8358 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::e80fe38e7db5707f250e40b7bdf8045cTest https://doi.org/10.3989/scimar.04312.09aTest |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........e80fe38e7db5707f250e40b7bdf8045c |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 18868134 02148358 |
|---|