Species diversity and dominancy indexes in Izmir Bay (Aegean Sea) purse seine fishery

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چکیده

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Mercury Accumulation and Speciation in Red Mullet (mullus Barbatus) and Annular Sea Bream (diplodus Annularis) from Izmir Bay (eastern Aegean)

Total mercury (THg) and methylmercury (MeHg) concentrations were investigated in two different species from the Izmir Bay. The levels of THg and MeHg in fish tissue, ranging from 4.4 to 221.4 μg THg kg and 3.8-194.8 μg MeHg kg (wet wt.), varied according to sampling point and season. The results indicate that none of the fish analysed was ≥ 0.500 μg g for THg and ≥ 0.300 μg g for MeHg and nor d...

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Growth and feeding habits of the brown comber, Serranus hepatus (Linnaeus, 1758) in Izmir Bay, Aegean Sea

Age, growth and diet of brown comber, Serranus hepatus, were determined from specimens collected in Izmir Bay, Aegean Sea. Total length ranged from 5.20 to 11.70 cm, while weight varied between 1.89 and 24.97 g. The length-weight relationship was W=0.0157*L2.998. Age was determined by otolith readings, where a maximum age of 4 years was observed. The von Bertalanffy growth parameters were estim...

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Post-release survival of juvenile silky sharks captured in a tropical tuna purse seine fishery

Juvenile silky sharks Carcharhinus falciformis comprise the largest component of the incidental elasmobranch catch taken in tropical tuna purse seine fisheries. During a chartered cruise on board a tuna purse seine vessel conducting typical fishing operations we investigated the post-release survival and rates of interaction with fishing gear of incidentally captured silky sharks using a combin...

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ژورنال

عنوان ژورنال: Ege Journal of Fisheries and Aquatic Sciences

سال: 2020

ISSN: 2148-3140,1300-1590

DOI: 10.12714/egejfas.37.4.05