Growth, mortality and relative yield per recruit of Japanese scad Decapterus maruadsi (Temminck &amp; Schlegel, 1842) in the Gulf of Suez, Red Sea, Egypt

Mehanna, Sahar F.; El-Sherbeny, Asaar S. H.; Khalil, Magdy T.; Ahmed, M. Rais; Kafrawy, Sameh B. El

doi:10.21608/ejabf.2015.2234

Cited by 3 publications

(2 citation statements)

References 3 publications

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“…ElSherbeny (2015) studied the application of Remote Sensing Techniques, Geographical Information Systems and Analytical Models, for the Pelagic Fisheries Management in the Gulf of Suez, Egypt. Mehanna et al (2015) investigated growth, mortality and relative yield per recruit of Japanese scad Decapterus maruadsi (Temminck & Schlegel, 1842) in the Gulf of Suez, Red Sea, Egypt.…”

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confidence: 99%

Fishery status of Carangoides bajad and Caranx melampygus (Family Carangidae) from Shalateen Fishing Area, Red Sea, Egypt, based on yield per recruit (Y/R) analysis

Mehanna¹,

Mohammad²,

Mahmoud³

2016

Egypt. J. of Aquatic Biolo. and Fish.

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The fishery status of two carangid species; Carangoides bajad and Caranx melampygus from Shalateen fishing area, Red Sea, Egypt has been evaluated. Yield per recruit of the two species as a function of different values of fishing mortality coefficient, age at first capture and natural mortality coefficient was estimated. For C. bajad it is found that, the current fishing mortality coefficient (1.34 / y), age at first capture (0.35 y) and natural mortality coefficient (0.34 / y) give a yield of (304.8 g) per recruit. While for C. melampygus, the current fishing mortality coefficient (1.75 / y), age at first capture (0.35 y) and natural mortality coefficient (0.25 / y) give a yield of (675.63 g) per recruit. Yield per recruit for C. bajad and C. melampygus showed that, the maximum (Y/R) was obtained at F max = 0.5 and 0.8 for C. bajad and C. melampygus respectively. For management purposes, the fishing mortality which is related to the fishing effort of C. bajad and C. melampygus should be reduced by at least 50% as well as the length at first capture which is related to the mesh size should be raised to the length at first maturity to maintain this valuable fishery.

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Section: Introductionmentioning

confidence: 99%

Fishery status of Carangoides bajad and Caranx melampygus (Family Carangidae) from Shalateen Fishing Area, Red Sea, Egypt, based on yield per recruit (Y/R) analysis

Mehanna¹,

Mohammad²,

Mahmoud³

2016

Egypt. J. of Aquatic Biolo. and Fish.

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“…Gulf of Suez has greatly contributed to the development of the fisheries and national economy; however, the status of fisheries resources and the ecosystem structure in the Gulf have substantially changed. It is appeared that, the fisheries resources in the Gulf are depleted, and the ecosystem is switching from large-size and high-value demersal fisheries to a small-size and low-value pelagic fisheries dominated ecosystem (Mehanna et al, 2015;.…”

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confidence: 99%

Evaluation of Fishery Status and Some Biological Aspects of Striped Piggy, Pomadasys stridens from Gulf of Suez, Red Sea, Egypt

Mehanna et al.

2023

Egypt. J. of Aquatic Biolo. and Fish.

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The Egyptian marine fisheries have an area of more than 11 million acres, comprise the Red Sea and the Mediterranean, and despite the large area they occupy, their fish production is still low compared to their area. The fisheries grounds in the Red Sea is 4.4 million acres, and its beaches extend a thousand kilometers long, including the areas of the Gulf of Suez in Suez Governorate, El-Tur, Dahab and Newibaa in South Sinai Governorate, and Hurghada, Safaga, El-Quseir, Berenis, Shalatein and Abo Ramad in the Red Sea Governorate.The Gulf of Suez is considered as one of the major sources of fish production in the Egyptian sector of the Red Sea as well as in Egypt. Its importance as a fish resource can be attributed to the shallowness and sandy bottom which make it suitable for trawling. Also, it is characterized by the presence of a great diversity of highly economic fish and invertebrate species (Sanders and Kedidi, 1984;Sanders and Morgan, 1989;Mehanna, 1997.The fisheries resources in the Gulf were exploited by three main fishing methods; trawling -caught demersal fishes‖, purse seining -caught pelagic fishes‖ as well as long and hand lines -caught demersal and pelagic fishes‖ (Mehanna and El-Gammal, 2007; Mehanna, 2021).

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Length-weight relationship, body condition, and fishing gear selectivity of shortfin scad (Decapterus macrosoma) landed in Banjarmasin fishing port, Indonesia

Ahmadi

2020

Fisheries &Amp; Aquatic Life

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The present study provides scientific information on the growth pattern and relative condition of shortfin scad, Decapterus macrosoma Bleeker landed in Banjarmasin fishing port, Indonesia. A total of 313 individual scad comprising 178 males and 135 females ranging from 152 to 225 mm total length and from 37 to 110 g weight were investigated. The body shape of both males and females showed isometric growth patterns indicating that all body dimensions grew at the same rate. The regression coefficient was significantly different between the sexes. The total length (TL), body weight (W), body depth (BD), W/TL, and BD/TL ratios and condition factors of the females were comparatively higher than those of males. The highest percentage of the catch was between 180 and 189 mm TL (32.59–40.45%) and 50 and 59 g W (20.65-21.79%). The relative condition factor values ranged from 0.799 to 1.433, which reflected the good condition of the fish samples. The estimated length at first capture (Lc50) and selection factor values were 180 mm and 3.54 for males and 185 mm and 3.64 for females. In the present work, the purse seine was considered to be a male-biased gear, with a sex ratio of 1.3 : 1. The outcomes of this research could be useful for sustainable pelagic fisheries management and for developing precautionary measures to prevent the overexploitation of this species.

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Growth, mortality and relative yield per recruit of Japanese scad Decapterus maruadsi (Temminck & Schlegel, 1842) in the Gulf of Suez, Red Sea, Egypt

Cited by 3 publications

References 3 publications

Fishery status of Carangoides bajad and Caranx melampygus (Family Carangidae) from Shalateen Fishing Area, Red Sea, Egypt, based on yield per recruit (Y/R) analysis

Fishery status of Carangoides bajad and Caranx melampygus (Family Carangidae) from Shalateen Fishing Area, Red Sea, Egypt, based on yield per recruit (Y/R) analysis

Evaluation of Fishery Status and Some Biological Aspects of Striped Piggy, Pomadasys stridens from Gulf of Suez, Red Sea, Egypt

Length-weight relationship, body condition, and fishing gear selectivity of shortfin scad (Decapterus macrosoma) landed in Banjarmasin fishing port, Indonesia

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