International Journal of Ecotoxicology and Ecobiology
Volume 4, Issue 4, December 2019, Pages: 80-87
Received: Aug. 1, 2019;
Accepted: Oct. 25, 2019;
Published: Oct. 31, 2019
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Samia Mohsen El-Mahdy, Fish Population Dynamics Lab, Fisheries Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt
Sahar Fahmy Mehanna, Fish Population Dynamics Lab, Fisheries Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt
Usama Mohammed Mahmoud, Zoology Department, Faculty of Science, Assiut University, Assiut, Egypt
Fahmy Ibrahim El-Gammal, Fish Population Dynamics Lab, Fisheries Division, National Institute of Oceanography and Fisheries, Alexandria, Egypt
The present study is the first study on the population dynamics and management of the Acanthopagrus bifasciatus in the Egyptian sector of Red Sea. A total of 729 specimens were monthly collected from the Egyptian Red Sea during January 2015 to December 2015. Results showed that, the longevity of A. bifasciatus is 9 years in the Egyptian Red Sea and age group three was the most frequent one for combined sexes forming up to 26.61% of the total catch. The age group one was absent in the collected samples and the highest growth in length was observed at the end of the second year of life (24.6 cm) after which the annual increment decreases gradually with increase in age. The growth in weight was isometric. The length at first capture was 25.31 cm with corresponding age 2.22 year. The total, natural and fishing mortality were estimated as 1.99, 0.46 and 1.53 yr-1, respectively. The exploitation ratio E was estimated at 0.77 indicating a high level of exploitation. The yield per recruit analysis showed that the present level of fishing mortality is much higher than that gives the maximum yield per recruit by about 48% and the reduction of current level of fishing mortality coefficient from 1.53 to 0.8 / y will be associated with an increase in the yield per recruit from 242.71 to 250.56 g (≈3%).
Samia Mohsen El-Mahdy,
Sahar Fahmy Mehanna,
Usama Mohammed Mahmoud,
Fahmy Ibrahim El-Gammal,
Population Dynamics and Management of Two-barred Seabream Acanthopagrus bifasciatus in the Red Sea, Egypt, International Journal of Ecotoxicology and Ecobiology.
Vol. 4, No. 4,
2019, pp. 80-87.
Ahmed, Y. A. Population Dynamics and Stock Assessment of the most important species of Family Scaridae (parrot) in Hurghada, Red Sea. MSc. Thesis, Fishery and Aquaculture Technology, Faculty of Science, Port Said University (2015).
Arslan, M.; Yildirim, A. and Bektas, S. Length-weight relationship of brown trout, Salmo trutta L., inhabiting Kan Stream, Coruh Basin, North-Eastern Turkey. Turk. J. Fish. Aqua. Sci., 4: 45-48 (2004).
Beverton, R. J. H. and Holt, S. J. On the dynamics of exploited fish population. U.K. Fish. Invest. Minist. Agr. Fish Food, 19: 533 (1957).
Beverton, R. J. H. and Holt, S. J. Manual of methods for fish stock assessment. Part 2. Tables of yield functions. FAO Fish. Tech. Pap., (38) Rev. 1: 67 p (1966).
Bonfil, R. The purpose of stock assessment and the objectives of fisheries management. FAO Fish. Tech. Pap., No. 474, 6-14 (2005).
Cherif, M.; Zarrad, R.; Gharbi, H.; Missaoui, H. and Jarboui, O. Some biological parameters of the red mullet, Mullus barbatus L., 1758, from the Gulf of Tunis. Acta Adriatica, 48 (2): 131-144 (2007).
El-Mahdy, M. S. Biological studies, population dynamics and stock assessment of Acanthopagrus bifasciatus from the Red Sea, Egypt. Ph.D. Thesis, Fac. Sci. Assiut University, 155 pp. (2018).
El-Sayed, A. M. and Abdel-Bary, K. Population biology of sparid fishes in Qatari waters. 2. Age, growth and mortality of black-banded bream, Mylio bifasciatus (Forsskal). Qatar Univ. Sci. J., 13 (2): 348-352 (1993).
El-Serafy, S. S.; El-Gammal, F. I.; Mehanna, S. F.; Abdel-Hamid, N. H. and Farrag, E. F. Age, Growth and Reproduction of the Tub Gurnard, Chelidonichthys lucerna (Linnaeus, 1758) from the Egyptian Mediterranean waters off, Alexandria. International Journal of Fisheries and Aquatic Sciences 4 (1): 13-20 (2015).
Erzini, K.; Bentes, L.; Coelho, R.; Correia, C.; Lino, P.; Monteiro, P.; Ribeiro, J. and Goncalves, J. M. S. Fisheries biology and assessment of demersal species (Sparidae) from the south of Portugal. UE-DG XIV 98/082. Final Report. pp 1-263 (2001).
Everhart, W. H.; Eipper, A. W. and Youngs, W. D. Principles of fishery science. Cornell University Press, London, 288 pp. (1975).
Ford, E. An account of the herring investigations conducted at Plymouth during the years from 1924 to1933. J. Mar. Biol. Ass. U.K., 19: 305-384 (1933).
Grandcourt, E. M.; Al Abdessalaam, T. Z.; Francis, F.; Al Shamsi, A.; Al Ali, K. and Ali, S. Al. Biological reference points, resource status and management options for the key demersal species of Abu Dhabi Emirate. Fish Landings and Population Dynamics Project (Project no. 02-23-0001). Marine Environmental Research Center. ERWDA. 40 p. (2004).
Grandcourt, E. M.; Francis, F.; Al Shamsi, A.; Al Ali, K. and Ali, S. Al. Stock assessment and biology of key species in the demersal fisheries of the Emirate of Abu Dhabi. Fish Landings and Population Dynamics Project (Project no. 02-23-0001). Marine Environmental Research Center. ERWDA. 75 p. (2003).
Gulland, J. A. Manual of methods for fish stock assessment. Part (1). Fish population analysis. FAO Man. Fish. Sci. 4: 154p. (1969).
Gulland, J. A. The fish resources of the Ocean. West Byfleet, Surrey, Fishing News, Ltd., FAO, 255 p. (1971).
Gulland, J. A. Fish stock assessment: a manual of basic methods. FAO/Wiley Series on Food and Agriculture, 1: 223 p. (1983).
Gumanao, G. S.; Saceda-Cardoza, M. M.; Mueller, B. and Bos, A. R. Length–weight and length–length relationships of Indo-Pacific fish species (Teleostei) from the Davao Gulf, Philippines. J. Appl. Ichthyol. 32 (2016), 377–385 (2016).
Hammam, E. M. Biological studies, stock assessment and fisheries management of some species of family Mullidae from the Mediterranean Sea at Alexandria. Ph.D. Thesis, Fac. Sci. Assiut University, 176 pp. (2017).
Hile, R. Age and growth of the Cisco leucichthys artedi (Le Sueur) in the lakes of the north Eastern highlands, Wisconsim. Bull. U. S. Bur. Fish., 19: 211-3 17 (1936).
Jones, R and Van Zalinge, N. P. Estimates of mortality rate and population size for shrimp in Kuwait waters. Kuwait Bull. Mar. Sci., 2: 273-288 (1981).
Lassen, H. and Medley, P. Virtual Population Analysis. A Practical Manual for Stock Assessment. FAO Fisheries Technical Paper No. 400. FAO, Rome. 129 pp. (2001).
Le Cren, E. D. The length–weight relationship and seasonal cycle in gonad weight and condition in the perch Perca fluviatilis. J. Anim. Ecol., 20: 201–219 (1951).
Lieske, E. and Myers, R. Collins Pocket Guide. Coral reef fishes. Indo-Pacific & Caribbean including the Red Sea. Haper Collins Publishers, 400 p. (1994).
Makkey, A. F. Population dynamics and stock assessment of Lethrinus lentjan and Lethrinus microdon (family: Lethrinidae) in the Egyptian coast of Red Sea. Ph. D. Thesis, Fac. Sci., Al-Azhar University (Cairo branch), 200 pp. (2017).
Mehanna, S. F. A study of the Biology and Population Dynamics of Lethrinus mahsena (Forsskal, 1775) in the Gulf of Suez. Ph. D. Thesis, Zagazig University, Egypt (1996).
Mehanna, S. F. Population dynamical parameters of the Atlanic lizardfish (Synodus saurus) from the Mediterranean Waters of Egypt. International Congress On "Estuaries & Coastal Protected Areas", ECPA 2014, 04 - 06 November 2014, Izmir–Turkey (2014).
Mehanna, S. F. Population dynamics of two Lessepsian migrant goatfish species; Upeneus pori and Upeneus moluccensis from the southeastern Mediterranean, Port Said region, Egypt. First Euro-Mediterranean Conference for Environmental Integration, 22-25 November, 2017, Sousse, Tunisia (2017).
Mehanna, S. F. and Al-Mammry, J. Length-weight relationship of 19 pelagic and demersal fish species from the sea of Oman. 4th International conference on Fisheries and Aquaculture researches, Cairo, 3-6 October, (2012).
Mehanna, S. F.; El-Gammal, F. I.; Zaahkouk, S. A.; Khalaf-Allah, H. M. M. and Makkey, A. F. Population dynamics of the small tooth emperor, Lethrinus microdon (Valenciennes, 1830) from the Egyptian Red Sea. International Journal of Fisheries and Aquatic Studies 2017; 5 (2): 158-163 (2017a).
Mehanna, S. F.; Osman, A. M.; Farrag, M. M. and Ahmed, Y. A. Age and growth of three common species of goatfish exploited by artisanal fishery in Hurghada fishing area, Egypt. Journal of Applied Ichthyology (2017b).
Mehanna, S. F.; Soliman, F. M.; Soliman, H. A. and Baker, T. S. Age, growth and length-weight relationship of Lutjanus quinqelineatus (Boch, 1790) and Lutjanus ehrenbergii (Petere, 1869) from the Red Sea, Egypt. Al-Azhar University, Assiut Branch annual conference, Hurghada (2017c).
Mohammad, A. S. Biological studies, stock assessment and fisheries management of Carangoides bajad (Forsskal, 1775) and Caranx melampygus (Cuvier, 1833) from the Red Sea, Egypt. Ph. D. Thesis, Zoology Department, Faculty of Science, Assiut University (2016).
Morgan, G. R. Assessment of sheim, Acanthopagrus latus in Kuwait waters. Proc., 1984 Shrimp and Fin Fisheries Management Workshop. Mathews, C. P. (ed). Kuwait Institute for Scientific Research, 1862: 116-124 (1985).
Pauly, D. On the interrelationships between natural mortality, growth parameters and mean environmental temperature in 175 fish stocks. J. Cons. CIEM, 39 (3): 175-192 (1980).
Pauly, D. Length-converted catch curves. A powerful tool for fisheries research in the tropics. Part I. ICLARM Fishbase, 1 (2): 9- 13 (1983).
Pauly, D. Fish population dynamics in tropical waters: a manual for use with programmable calculators. ICLARM Stud. Rev., 8: 325 p. (1984).
Pope, E. C.; Hays, G. C.; Thys, T. M.; Doyle, T. K.; Sims, D. W.; Queiroz, N.; Hobson, V. J.; Kubicek, L. and Houghton, J. D. R. The biology and ecology of the ocean sunfish Mola mola: a review of current knowledge and future research perspectives. Reviews of Fish Biology and Fisheries 20: 471-487 (2010).
Rikhter, V. A. and Efanov, V. N. On one the approaches to estimation of natural mortality of fish population. ICNAF Res. Doc. 76/VI/8: 12p. (1976).
Samuel, M. and Mathews, C. P. Growth and mortality of four Acanthopagrus species. Kuwait Bul. Sci., 9: 159-171 (1987).
Sommer, C.; Schneider, W. and Poutiers, J. M. FAO Species Identification Field Guide for Fishery Purposes the Living Marine Resources of Somalia. FAO, Rome, Pages: 376. (1996).
Sparre, P. and Venema, S. Introduction to tropical fish stock assessment Part 1 Mannual FAO Fish. Tech. Pap., 306/1, Rev., 1: 376 p. (1992).
Sparre, P. and Venema, S. Introduction to Tropical Fish Stock Assessment-Part 1: Manual. FAO Fisheries Technical Paper 306/1 Rev. 2. (1998).
Tracey, S. R.; Lyle, J. M. and Haddom, M. Reproductive biology and per-recruit analysis of striped trumpeter (Latis lineta) from Tasmania, Australia: Implications for management. Fisheries Research, 84: 358–367 (2006).
Walford, L. A.: A new graphic method of describing the growth of animals. Biol. Bull. Mar. Biol., 90 (2): 141-147 (1946).
Zaahkouk, S. A.; Khalaf-Allah, H. M.; Mehanna, S. F.; El-Gammal F. I. and Makkey, A. F.. Studies on age, growth, and mortality rates for management of the redspot emperor, Lethrinus lentjan (Lacepède, 1802) in the Egyptian sector of Red Sea. Egyptian Journal of Aquatic Biology & Fisheries, 21 (1): 63-72 (2017).