scholarly journals Length- Weight Relationships and Condition Factors of Cynoglossus Cynoglossus and Caranx Hippos in Epe Lagoon, Nigeria

2017 ◽  
Vol 4 (3) ◽  
Keyword(s):  
Caranx Hippos

scholarly journals CHARACTERIZATION OF ARTISANAL FISHING IN FISHWEIRS, THE NORTH COAST OF PARAIBA, BRAZIL

2017 ◽  
Vol 49 (2) ◽  
pp. 92
Author(s):  
Glória Cristina Cornélio Do Nascimento ◽  
Eduardo Beltrão de Lucena Córdula ◽  
Reinaldo Farias Paiva De Lucena ◽  
Ricardo De Souza Rosa ◽  
José Da Silva Mourão
Keyword(s):  
North Coast ◽  
Artisanal Fishing ◽  
The North ◽  
Trichiurus Lepturus ◽  
Caranx Hippos

Estratégias tradicionais de pesca são utilizadas por comunidades de pescadores em todo o mundo, dentre elas os “currais”, que são armadilhas fixas construídas na zona costeira. O objetivo do presente estudo foi caracterizar e descrever as formas de manejo destes “currais” pelos pescadores do litoral da Paraíba. Foram utilizadas entrevistas livres, “rapport”,“Snow ball” e formulário semiestruturado nas visitas mensais aos cinco “currais” entre os meses de novembro 2012 até março de 2013. Foi quantificada a produção dos currais e identificada as espécies mais capturadas. Os dados mostraram que estas armadilhas são constituídas por compartimentos e passam por fases em terra e mar até serem totalmente ativadas. O total da produção de peixes foi de 303 kg. As espécies predominantes foram: Mugil curema and Mugil liza, Trichiurus lepturus, Caranx hippos, Selene vomer, Selene setapinnis, Diapterus auratus e Diapterus rhombeus. Conclui-se que este tipo de pesca é utilizado há décadas no litoral da Paraíba, demonstrando existir manejo e técnicas próprias com relações de trabalhos inerentes a este tipo de armadilha.

scholarly journals FECUNDIDAD DEL JUREL ALETA AMARILLA, CARANX HIPPOS (LINNAEUS) EN EL CARIBE COLOMBIANO

2016 ◽  
Vol 45 (1) ◽  
Author(s):  
Sandra Alfaro Martínez ◽  
Diana Bustos Montes ◽  
Sarith Salas Castro ◽  
Javier Gómez León ◽  
Mario Rueda
Keyword(s):  
Gravimetric Method ◽  
Average Diameter ◽  
Mature Oocyte ◽  
Biological Knowledge ◽  
Microstructural Development ◽  
Oocyte Diameter ◽  
Management Procedures ◽  
Fish Samples ◽  
Direct Applicability ◽  
Caranx Hippos

Caranx hippos is one of the most important fish resources in Colombia, particularly in artisanal fisheries. In order to deepen C. hippos biological knowledge, fecundity (number of eggs in development) and oocyte diameter was estimated. Fish samples were collected from commercial artisanal fishing trips, each fish was measured (total length, Lt) and weighted (total weight, Pt); gonads were removed, weighed and analyzed for determining fecundity using a gravimetric method combined with image analysis performed using the open access software Image J®. From the measurement of 149552 oocytes, an average diameter of 0.32 ± 1.24E-4 mm, was obtained, while fecundity varied between 291439 and 4380480 oocytes per gonad. No direct relationship was evidenced between egg number and diameter, and fish size and weight. Mature oocyte microstructural development is described, average diameters in cortical alveoli and vitellogenesis were 98.6 + 33.1 μm y 207.5+ 59.6 μm, respectively. This result suggests that larger females are not always the more fertile. Given the importance of C. hippos in Colombia, this work is a valuable contribution to the knowledge of the species, which can be used in fishery models with direct applicability to management procedures.

Helminth Parasites of Caranx hippos (Crevalle Jack) and Sardinella maderensis (Madeiran Sardinella) from Two Fishing Settlements In Okrika, Rivers State, Nigeria

2021 ◽  
Vol 42 (1) ◽  
pp. 75-80
Author(s):  
B. Odum ◽  
C.C. Amuzie
Keyword(s):  
Infected Fish ◽  
Economic Losses ◽  
Parasitic Infections ◽  
Helminth Parasites ◽  
High Quality Protein ◽  
Fish Samples ◽  
Crevalle Jack ◽  
Rivers State ◽  
Caranx Hippos ◽  
Anisakid Larvae

Fish is an important dietary component as a source of high quality protein, and parasitic infections can result in production and economic losses. Therefore, this study was aimed at investigating the helminth parasites of Caranx hippos and Sardinella maderensis of Okrika. Fish samples were purchased from fishers between May and June, 2019 from two locations: Angalabia and Sara landing ports, Okrika. Fifty specimens of each species were dissected using standard methods, and parasites were identified using appropriate keys. Parasite ecological parameters were computed. Two parasite species were identified, Lethacotyle sp. (monogenea) and Anisakid larvae (nematode). Twenty-six specimens of Caranx hippos were infected with Lethacotyle sp., and eight with Anisakid larvae. Only one specimen of S. maderensis was infected with Anisakid larvae; others were un-infected. Examination showed a prevalence of 52.0% and 16.0% infection of Lethacotyle sp. and Anisakid larvae, respectively, in Caranx hippos, and 2.0% prevalence of Anisakid larvae in Sardinella maderensis. The preferred organs for parasite infection were the gills (Lethacotyle sp.) and intestines (Anisakid larva) of infected fish. The recovery of Anisakid larvae at a prevalence of 16% indicates that anisakiasis could be an emerging disease in Okrika. It is recommended that further research be conducted into the molecular characterization of Lethacotyle sp. of C. hippos of Okrika. It is also important to properly identify and characterize the Anisakid species, and investigate the incidence of human anisakiasis inOkrika and other coastal cities of Rivers State, Nigeria. Keywords: Lethacotyle, Anisakid larva, anisakiasis, Caranx, Sardinella, Parasites, Marine, Okrika, Nigeria

scholarly journals Presence and concentration of polycyclic aromatic hydrocarbons (PAHs) in sediments and organisms from Tampamachoco coastal lagoon and Tuxpan River, Veracruz; México.

2021 ◽  
Author(s):  
Alfonso V. Botello ◽  
Guadalupe Ponce-Vélez ◽  
Susana Villanueva F.
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Fossil Fuels ◽  
Average Concentration ◽  
Threshold Concentration ◽  
Polycyclic Aromatic ◽  
Estuarine Lagoon ◽  
Persistent Organic Compounds ◽  
Caranx Hippos ◽  
Total Concentrations

Abstract Polycyclic aromatic hydrocarbons (PAHs) have carcinogenic and mutagenic properties and their main origin in the environment is the burning of fossil fuels and organic material and they are considered high priority Persistent Organic Compounds (POPs). In the present study (March and August 2018) the concentrations of the 16 priority PAHs were analyzed in sediments and organisms (fish and oysters) in the estuarine-lagoon system Tuxpan-Tampamachoco, Veracruz; Mexico.The analysis of these compounds was carried out by means of gas chromatography-FID and mass spectrometry. In March (dry season) the average concentration of PAHs in sediments was 0.86 ± 0.39 μg/g and in August (rainy season) it was 1.14 ± 0.45 μg/g. During both collections, chrysene presented the highest total concentrations and a domain of the compounds with 4 benzene rings was observed, therefore, pyrolytic sources of contribution predominated. The highest concentrations of PAHs occurred in 2 stations located in the Tuxpan riverbed and both exceeded the threshold concentration to cause adverse effects to the benthic community.The analysis of PAHs in organism tissues was carried out in 4 species of fish and one mollusk. In march, the species with the highest concentration was Bagre marinus with 88.87 μg/g and in august it corresponded to the Caranx hippos species with 26.82 μg/g and the compound determined with the highest presence was benzo(b)fluoranthene.Finally, the tendency of accumulation of PAHs in the evaluated matrices was: fish> sediments> mollusks.

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