کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8875242 | 1623606 | 2017 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Hermaphroditism in Brachidontes pharaonis (Fischer, 1876) (Bivalvia: Mytilidae) from the Alexandria Coast, Egypt
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم کشاورزی و بیولوژیک
علوم کشاورزی و بیولوژیک (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Hermaphroditism in Brachidontes pharaonis (Fischer, 1876) (Bivalvia: Mytilidae) from the Alexandria Coast, Egypt Hermaphroditism in Brachidontes pharaonis (Fischer, 1876) (Bivalvia: Mytilidae) from the Alexandria Coast, Egypt](/preview/png/8875242.png)
چکیده انگلیسی
Brachidontes pharaonis (Fischer, 1876) was widely reported to cover completely hard substrates especially rocky shores with higher density in mid-littoral zones forming mytilid beds along Alexandria Coast, Egypt. During our study on the reproductive cycle of this species, one case out of 307 examined specimens was found to be hermaphrodite representing only 0.33% of the total sample. It had a shell length 28.25â¯mm and was collected during January 2017. The sex ratio of this population is different from 1:1, although this deference was not significant (X2â¯=â¯11.118, dfâ¯=â¯11, Pâ¯>â¯0.05). In this contribution, this case of hermaphroditism in B. pharaonis is described. The histological study showed the presence of male and female gametes in the same follicle and this was the most common situation in both lobes of the mantle. The male zone was showing different stages of spermatogenesis together with the female zones showed different stages of oogenesis with occurrence of young oocytes attached to the follicle wall.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Egyptian Journal of Aquatic Research - Volume 43, Issue 3, September 2017, Pages 265-268
Journal: The Egyptian Journal of Aquatic Research - Volume 43, Issue 3, September 2017, Pages 265-268
نویسندگان
Fatma A. Abdel Razek, Rabab S. El-Deeb, Karolin K. Abdul-Aziz, Hamdy A. Omar, Amal R. Khafage,