Fisheries management of round sardinella Sardinella aurita along North Sinai coast

Al-Beak, Ahmed M

doi:10.12980/jclm.4.2016j6-59

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Furthermore, differences at various sizes are associated with unequal rates of growth and mortality (Turner et al, 1983). The length at asymptotic (L∞) (21.73 cm) and growth rates (K) of 0.95 yr -1 calculated in this study were relatively different from estimates by other researchers (Al-beak, 2016;Mehanna and Salem, 2011). Nabil et al (2012) obtained L∞= 28.37 cm, K= 0.23 year-1 and t0= 0.98 year.…”

Section: Discussioncontrasting

confidence: 99%

“…aurita juveniles become susceptible to capture six months after being recruited into the stock, according to the age at first capture (tc50) method, because of the mesh size and type of fishing gear used. The calculated age at first capture (tc) was lower than that calculated by Al-beak (2016) and Mehanna and Salem (2011). Furthermore, the intensity of fishing over time may be a factor that tends to alter the species' length structure in order to prevent future collapse.…”

Section: Discussioncontrasting

confidence: 61%

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Yeni Calabar Nehri’nde (Nijer Deltası, Nijerya) Yuvarlak Sardalyanın (Sardinella aurita, Valenciennes, 1847) Büyüme, Ölüm Oranı ve Sömürülme Oranı

Dienye¹,

Olopade²,

ICHENDU³

2022

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries

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Bu çalışma, Yeni Calabar Nehri'ndeki Sardinella aurita türünün büyüme, ölüm oranı ve yararlanma oranını değerlendirdi. Mart 2020 ile Şubat 2021 arasında ticari balıkçılardan toplam 513 S. aurita örneği toplandı ve değerlendirildi. İstatistiksel analiz için FiSAT II yazılımı kullanıldı. Asimptotik uzunluk (L∞) = 21,73 cm, büyüme katsayısı (K) = 0,95 yıl-1, maksimum ömür (Tmax) = 2,68 yıl, teorik doğum öncesi yaş (t0) = -0,48 yıl ve büyüme performans indeksi (Φ ′) = 2.65 olarak belirlendi. İlk yakalanma boyu (Lc50 = 15.06 cm), ilk eşeysel olgunluk boyundan (Lm50 = 21.12 cm) daha düşüktü. Ölüm parametreleri olan toplam ölüm oranı (Z) = 3.03 yıl-1, doğal ölüm oranı (M) = 1.42 yıl-1, balıkçılık ölüm oranı (F) = 1.61 yıl-1 olarak gerçekleşti. Bu, çalışma alanında S. aurita türünün hızlı bir büyüme oranına, küçük boyuta, geç cinsel olgunlağa ve yüksek doğal ölüm oranına sahip olduğunu gösterir. Yararlanma oranı (E) 0,53 idi. S. aurita türünün optimum şekilde yararlanıldığı bulundu. Bu nedenle, aşırı avlanmayı önlemek için sürdürülebilir balıkçılık önlemleri benimsenmelidir ve bunlar arasında balıkçılık çabalarının izlenmesi ve Yeni Calabar Nehri’nde S. aurita balıkçılığını sürdürülebilir kılmak için artan ağ gözü boyutunun uygulanması ve uygulatılması yer almaktadır.

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Section: Discussioncontrasting

confidence: 99%

Section: Discussioncontrasting

confidence: 61%

Yeni Calabar Nehri’nde (Nijer Deltası, Nijerya) Yuvarlak Sardalyanın (Sardinella aurita, Valenciennes, 1847) Büyüme, Ölüm Oranı ve Sömürülme Oranı

Dienye¹,

Olopade²,

ICHENDU³

2022

Çanakkale Onsekiz Mart University Journal of Marine Sciences and Fisheries

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“…In view of the importance of the knowledge on species individual growth, it leads to determination of other parameters of its stock and eventually to a more precise resource developing (Al-Beak, 2016). Age information is important as it forms the basis for the calculations of growth and mortality rates and productivity estimates, making it essential for fisheries management (Al-Beak et al, 2017).…”

Section: Map Of Bardwell Lagoon-north Sinaimentioning

confidence: 99%

Population Dynamics of the Thinlip Grey Mullet (Liza ramada, Risso, 1827) in Bardawil Lagoon, North Sinai, Egypt

Ahmad¹

2022

Journal of Animal, Poultry & Fish Production

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The fisheries of Bardwell lagoon are one of the unique Egyptian northern fisheries that are characterized by its fish production. A total of 1200samplesof the thin lipgrey mullet (Liza ramada) fishes were taken from Bardawil lagoon, North Sinai Egypt, during fishing season from April to December2017. Some biological parameters such as length -scale radius and length -weight relationships, composite condition factor and reproduction biological aspects were studied. L. ramada shows isometric growth in the lagoon. The G.S.I. that means the spawning season of L. ramada was at its peak in October and December of each year.

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Assessment of Sparus aurata (Gilthead Seabream) stock in Bardawil lagoon, southeast Mediterranean Sea

El-Aiq¹,

Raaft²,

Youssef³

et al. 2021

Int J Aquac Fish Sci

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During present study period from October 2020 to April 2021, gilthead seabream Sparus aurata stock was estimated by using many assessment models to evaluate actual status on Bardawil lagoon. Length at first capture (Lc) was 17.10 and 16.70 cm for females and males respectively, but it was 16.9 cm for all individuals that corresponding age at first capture (tc= 2.49 year). Length at first recruit Lr was 10.70 and 9.70 cm for females and males, respectively, corresponding age tr= 0.77 year. The length at first maturity was Lm= 18.18 cm that corresponding age tm= 2.85 years. Virtual population analysis shows some of intensive capture on S. aurata at its early life’s. Yield per recruit and biomass per recruit tend to collapse as a result of high fishing mortalities. The current study concludes an exact overfishing pressure of S. aurata stock in Bardawil lagoon.

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Fisheries management of round sardinella Sardinella aurita along North Sinai coast

Cited by 5 publications

References 11 publications

Yeni Calabar Nehri’nde (Nijer Deltası, Nijerya) Yuvarlak Sardalyanın (Sardinella aurita, Valenciennes, 1847) Büyüme, Ölüm Oranı ve Sömürülme Oranı

Yeni Calabar Nehri’nde (Nijer Deltası, Nijerya) Yuvarlak Sardalyanın (Sardinella aurita, Valenciennes, 1847) Büyüme, Ölüm Oranı ve Sömürülme Oranı

Population Dynamics of the Thinlip Grey Mullet (Liza ramada, Risso, 1827) in Bardawil Lagoon, North Sinai, Egypt

Assessment of Sparus aurata (Gilthead Seabream) stock in Bardawil lagoon, southeast Mediterranean Sea

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