On the presence of the African catfish Clarias anguillaris (Linnaeus, 1758) Siluriformes Clariidae) in south-eastern Algeria (Ifni-Illizi)

Behmene, Ibrahim Elkhalil; Benabdallah, Bachir Bouiadjra; Daoudi, Mohamed

doi:10.31396/biodiv.jour.2020.11.2.363.368

Cited by 2 publications

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“…The size-weight relationship of fish provides several insights, including their growth patterns and life-cycle stages. These statistical data are often important in determining population structure and their interaction with the habitat where they live (Behmene 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%