Growth and mortality of Conger conger (Linnaeus, 1758) (Pisces Congridae) in the Algerian basin

Daoudi, Mohamed; Bouiadjra, Benabdallah Bachir; Charton, José Antonio García; Behmene, Ibrahim Elkhalil; Hemida, Farid

doi:10.31396/biodiv.jour.2020.11.4.853.860

Cited by 3 publications

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“…Contrary to our study, the growth of C. conger in the Algerian basin was carried out by analyzing age structures and size structures. The growth parameters used are those obtained by the ELEFAN I method, carried out using FISAT II software, weight growth shows major allometry in C. conger (b = 3.4), whose weight grows faster than the cube of the length (Daoudi et al, 2020).…”

Section: Estimation Of Asymptotic Weight W∞mentioning

confidence: 99%

Growth of African Catfish (Clarias gariepinus) in Illizi South-East Algeria

Behmene

Bouiadjra

Daoudi

et al. 2021

JAFH

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These observations are intended to provide information on the growth of the African catfish (Clarias gariepinus) living in the Oued Takhamalte-Illizi South-East Algerian. The basic data are the frequencies of the fish sizes resulting from the experimental fisheries carried out in October 2019 in Oued Takhamalte South-East of Algeria. The ELEFAN I program incorporated into FiSAT II software was used. The Powell-Wetherall method provides an L∞ of the order of 53.84 cm and a Z/K of 3.254 with a correlation coefficient R = - 0.944. This asymptotic length is greater than the maximum observed value (Lmax = 50 cm) and the Taylor approximation (L max/0.95 = 52.63 cm). The corresponding K value (0.28/year) seems the most suitable for the growth of a species, for this we opted for the parameters obtained by the sub-program « area of equal responses» of the program ELEFAN I (L∞ = 53 cm and K = 0.28/year) for the continuation of our study. The reduced gap test proves that there is a significant difference between the observed slope (b = 2.41) and the theoretical slope (P = 3), which makes it possible to affirm that the height-weight relationship in both sexes of C. gariepinus shows minor allometry, meaning that the weight grows slower than the cube of length.

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Section: Estimation Of Asymptotic Weight W∞mentioning

confidence: 99%

Growth of African Catfish (Clarias gariepinus) in Illizi South-East Algeria

Behmene

Bouiadjra

Daoudi

et al. 2021

JAFH

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Length-Weight Relationship of Four Species of Deep-Sea Congrid Eel (Congridae) from the Southwest Coast of India, Arabian Sea

2023

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Vulnerability Assessment of Target Shrimps and Bycatch Species from Industrial Shrimp Trawl Fishery in the Bay of Bengal, Bangladesh

et al. 2022

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Productivity susceptibility analysis (PSA) is a semi-quantitative ecological risk assessment tool, widely used to determine the relative vulnerability of target and non-target species to fishing impacts. Considering the available information on species-specific life-history and fishery-specific attributes, we used PSA to assess the relative risk of the 60 species interacting with the shrimp trawl fishery in the Bay of Bengal, Bangladesh. Penaeus monodon, the most important target, and Metapenaeus monoceros, the highest catch contributor, along with other 15 species were in the moderate-risk category, while seven non-target bycatch species were in the high-risk category. PSA-derived vulnerability results were validated with IUCN extinction risk, exploitation rate and stocks’ catch trend. The majority of the identified species showed high productivity (37%) and high susceptibility (46%), and all the moderately and highly vulnerable species were subjected to overfishing conditions by shrimp trawl fishery, which coincided with the vulnerability scores (V ≥ 1.8). Species with V ≥ 1.8 mostly showed a decreasing catch trend, while the species with a stable or increasing catch trend had a V ≤ 1.72. Data quality analysis of productivity and susceptibility attributes indicated that the majority of species were considered data-limited, which emphasizes the acquisition of data on spatio-temporal abundance, catch and effort, and biological information specifically relating to species age, growth, and reproduction. However, our findings can assist fishery administrators in implementing an ecosystem approach to ensure the sustainability and conservation of marine biodiversity in the Bay of Bengal.

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Growth and mortality of Conger conger (Linnaeus, 1758) (Pisces Congridae) in the Algerian basin

Cited by 3 publications

References 0 publications

Growth of African Catfish (Clarias gariepinus) in Illizi South-East Algeria

Growth of African Catfish (Clarias gariepinus) in Illizi South-East Algeria

Length-Weight Relationship of Four Species of Deep-Sea Congrid Eel (Congridae) from the Southwest Coast of India, Arabian Sea

Vulnerability Assessment of Target Shrimps and Bycatch Species from Industrial Shrimp Trawl Fishery in the Bay of Bengal, Bangladesh

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