ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT
M., E., A., E., A., A., A., O., M., N. (2018). ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT. EKB Journal Management System, 29(Issue 2-C), 11-24. doi: 10.21608/absb.2018.33815
El-Sayed A. M.; El-Mekawy H. A.; Al-Hammady, M. A.; Owen, N. A.; Nassef, A. M.. "ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT". EKB Journal Management System, 29, Issue 2-C, 2018, 11-24. doi: 10.21608/absb.2018.33815
M., E., A., E., A., A., A., O., M., N. (2018). 'ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT', EKB Journal Management System, 29(Issue 2-C), pp. 11-24. doi: 10.21608/absb.2018.33815
M., E., A., E., A., A., A., O., M., N. ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT. EKB Journal Management System, 2018; 29(Issue 2-C): 11-24. doi: 10.21608/absb.2018.33815

ASPECTS OF REPRODUCTIVE BIOLOGY OF THE MUSSEL, BRACHIDONTES PHARAONIS (FISCHER, 1870) (MYTILIDAE:BIVALVIA: MOLLUSCA) FROM THE NORTHWESTERN COAST OF SUEZ GULF, EGYPT

Al-Azhar Bulletin of Science
Article 9, Volume 29, Issue 2-C, December 2018, Page 11-24  XML PDF (803.71 K)
Document Type: Original Article
DOI: 10.21608/absb.2018.33815
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Authors
El-Sayed A. M.* 1; El-Mekawy H. A.2; Al-Hammady, M. A.3; Owen, N. A.4; Nassef, A. M.1
1Faculty of Science, Al-Azhar University, Cairo, Egypt
2Faculty of Science, Al-Azhar University, Cairo, Egypt,
3National Institute of Oceanography and Fisheries, Red Sea, Hurghada, Egypt,
4Faculty of Science, Sabratha University, Sabratha, Libya
Abstract
Reproductive cycle of the two populations of Brachidontes pharaonis (Mytilidae: Bivalvia: Mollusca)at Adabia and Ain Sokhna (northern western coast of the Suez Gulf), was studied during the period from January to December 2014. The present results showed that sex is separated in this species, but the microscopic examinations are necessary for determination of gonads in both sexes. The first appearance for gonads was observed in males and females at 6.3and 6.5 mm shell length, respectively. However, the largest immature individuals reach 8.6 mm shell length. The overall sex ratio indicated to over dominant females at both sites, with 1:1.57 (males: females) at Adabia, increased slightly to 1:1.81 (males: females) at Ain Sokhna, with statistical significant differences (X2= 8.33 and 5.14 significant at P
Keywords
Bivalve; Mollusca; Gulf of Suez; Reproduction; oocytes; maturation
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