Abstract

This study focuses on the deepening of fundamental knowledge on bio-ecology, morphogeometry and parasitofauna of the species Luciobarbus callensis (Valencienne, 1842) inhabiting four dams (Ain Dalia, Foum El Khanga, Zit El Anba, Béni Haroun) from eastern Algeria. Prospecting took place between 2015 and 2019.
Physico-chemical analyses of the waters of the surveyed dams revealed that the water quality of these hydrosystems varies from good to acceptable. However, this quality remains influenced by climatic and anthropogenic factors.
For morphogeometric analysis, significant differences (inter-dams and inter-sexes) were noted between fish populations for conformation parameters, and centroid sizes.
The age and growth of L.callensis in the F.El-Khanga dam is estimated by scalimetry. The age limits determined by this method are between 1 and 6 years in the total population, females and males. The performance index (φ) shows a relatively rapid growth of the local population. The relative growth of this species is generally minor in the total population (b = 2.78), females (b = 2.55) and males (b = 2.76).
The F.El-Khanga dam Barbel has a saisonal food rhythm; the latter is influenced on the one hand by the climatic and ecological conditions of the environment, and on the other by the reproductive cycle of the species. This fish has an omnivorous diet with a phytophage tendency.
The results of the observation of the anatomical morpho characters of the parasites collected allowed us to identify 15 parasitic species, 2/3 of which are related to the subclass Monopisthocotylea. The evaluation of parasitological indices in the F.El-Khanga dam showed, the clear predominance of the Acanthogyrus (A.) maroccanus (p>28%). Seasonal variations in calculated parasitological indices appear to be related to abiotic (temperature) and biotic (fish size and sex) parameters.

Keywords: Ain Dalia dam, Foum El Khanga dam, Zit El Anba dam, Beni Haroun dam, Luciobarbus callensis, morphogéométry, growth, diet, parasitofauna.

Information

Item Type:	Thesis
Divisions:	» Faculty of Natural Sciences and Life
ePrint ID:	2921
Date Deposited:	2022-03-14
Further Information:	Google Scholar
URI:	https://old.univ-soukahras.dz/en/publication/article/2921

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