Home Articles List Article Information
Egyptian Journal of Aquatic Biology and Fisheries
Journal Archive
Volume Volume 29 (2025)
Volume Volume 28 (2024)
Volume Volume 27 (2023)
Volume Volume 26 (2022)
Volume Volume 25 (2021)
Volume Volume 24 (2020)
Volume Volume 23 (2019)
Volume Volume 22 (2018)
Volume Volume 21 (2017)
Volume Volume 20 (2016)
Volume Volume 19 (2015)
Volume Volume 18 (2014)
Volume Volume 17 (2013)
Volume Volume 16 (2012)
Volume Volume 15 (2011)
Volume Volume 14 (2010)
Volume Volume 13 (2009)
Volume Volume 12 (2008)
Volume Volume 11 (2007)
Volume Volume 10 (2006)
Volume Volume 9 (2005)
Volume Volume 8 (2004)
Volume Volume 7 (2003)
Volume Volume 6 (2002)
Volume Volume 5 (2001)
Volume Volume 4 (2000)
Volume Volume 3 (1999)
Volume Volume 2 (1998)
Volume Volume 1 (1997)
Riad, R., ELebiary, N., Halim, Y., Atta, M. (2015). Reproductive Biology of Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 19(4), 91-102. doi: 10.21608/ejabf.2015.2279
Rafik Riad; Noha ELebiary; Youssef Halim; Manal Atta. "Reproductive Biology of Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt.". Egyptian Journal of Aquatic Biology and Fisheries, 19, 4, 2015, 91-102. doi: 10.21608/ejabf.2015.2279
Riad, R., ELebiary, N., Halim, Y., Atta, M. (2015). 'Reproductive Biology of Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt.', Egyptian Journal of Aquatic Biology and Fisheries, 19(4), pp. 91-102. doi: 10.21608/ejabf.2015.2279
Riad, R., ELebiary, N., Halim, Y., Atta, M. Reproductive Biology of Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 2015; 19(4): 91-102. doi: 10.21608/ejabf.2015.2279

Reproductive Biology of Sepia pharaonis Ehrenberg, 1831(Cephalopoda: Sepioidea) from the Suez Gulf (Red Sea), Egypt.

Article 8, Volume 19, Issue 4, December 2015, Page 91-102  XML PDF (576.31 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2015.2279
View on SCiNiTO View on SCiNiTO
Authors
Rafik Riad1; Noha ELebiary1; Youssef Halim2; Manal Atta2
1Marine Environment Division, National Institute of Oceanography and Fisheries (NIOF), Alexandria Branch, Egypt.
2Oceanography Department, Faculty of Science, Alexandria University, Egypt
Abstract
Reproductive biology of males and females of Sepia phraonis were investigated from samples obtained from commercial catch caught by local fishermen using trawling nets. The samples were seasonally collected (individuals) between winter
2014 to autumn 2014. The results of sex ratio indicated that females outnumbered males. The mean size at first maturity was 7cm and8.6cm dorsal mantel length (ML) for males and females respectively Based upon morphological features of the gonads and nidamental gland color change in female, five and four maturity stages for males
and females were described, respectively. Depending on the proportion of each maturity stage, as well as various maturity indices (gonado-somatic index, G.S.I and nidamental-somatic index, N.S.I) the spawning season was found to take place during spring and summer and sometimes extends to autumn. So, it is recommended to reduce fishing activity during these periods.
Keywords
Sepia pharaonis; reproductive biology . Suez Gulf; Red Sea; Egypt
Main Subjects
Fisheries
Statistics
Article View: 504
PDF Download: 939