Caracterisation Physico-Chimique Des Eaux Du Barrage Foum El-Khanga (Region De Souk-Ahras, Algerie)

The objective of our work is to assess the quality of the dam Foum El-Khanga (east of Algéria) monthly during the year 2014. This study planned to make a physico-chemical characterization to highlight several parameters which come into play the determination of the quality of this water such as: temperature; pH; conductivity; turbidity; dissolved oxygen; title hydrotimetric; calcium; magnesium; title alcalimetric complet; nitrate; nitrite; ammoniacal nitrogen; sulfate; chloride; bicarbonate; phosphate; iron; biological oxygen demand (BOD) and chemical oxygen demands (COD). The results of physico-chemical analysis show that the water of this dam is characterized by a significant mineralization as indicated by high values of electrical conductivity and chloride. The results of principal component analysis (PCA) clearly showed a stronger relation between the hot season and temperature. However, the cold season was strongly correlated with mineralization and pollution parameters

Length-Weight Relationships of the Bream Abramis Brama (Linnaeus, 1758) in Beni- Haroun Dam of Mila City (North-East Of Algeria)

The study of fish growth is a valuable tool in providing good understanding on the general biology and growth of fish populations, in addition to the comparison of the same fish species populations living in remote geographic areas. Thus, the present work was designed to study the age and growth of Abramis brama species newly introduced in Beni-Haroun dam (Mila department, Northeast Algeria). Here, the study was conducted on sampling of 141 individuals from July 2015 to October 2016. The age of fishes was determined according to scalimetric method, since the fish sex was determined by macroscopic method, showing that the number of females is higher (97) than that of males (44). The growth study was performed according to the mathematical method of Von Bertalanffy (1938). Based on the results of the growth parameters (L∞=40 cm; K= 0.27; t0=0.55; Ø’= 2.49. Males L∞= 35.26 cm; K = 0.32; t0= -0.49; Ø’= 2.59, combined sexes L∞=40cm; K= 0.31; t0=-0.49 years, and Ø’ = 2.69), Abramis brama can live up to five years. Moreover, the evolution of total fish weights in function of their size reveals a minor allometry (b\u3c3) (with and without distinction of sex), while the other obtained values provide good fits to Von Bertalanffy growth model

Les Monogènes parasites du genre Diplodus dans l'Est du littoral algérien

International audienceThis work is based on the study of the Monogenean parasite community of three species of the Teleostean fish Diplodus Rafinesque, 1810 (Sparidae): Diplodus sargus sargus (Linnaeus, 1758), D. annularis (Linnaeus, 1758) and D. vulgaris (E. Geoffroy St.- Hilaire, 1817) from various localities of the eastern Algerian coastline: the Gulfs of Skikda and Annaba, the coastline of El Kala, and the El Mellah lagoon. Observation of morphological and anatomical criteria of collected Monogeneans from all host species reveals the presence of 11 species, two thirds of which are related to the subclass Monopisthocotylea Odhner, 1912. The results of the distribution of parasitic indices at studied host species show that the prevalence and parasitic load vary from one host species to another and from one site to another. In the lagoon, where the parasite species richness is the lowest, the values of the intensity of infestation and abundance are however the highest. The highest parasitic loads are noted in Diplodus sargus sargus (Linnaeus, 1758) in all localities

Influence of site and host on parasites of two teleost fish in Algeria revealed by using indicator species analysis

International audienceThe indicator value methods are important to conservation biology because it is conceptually straight forward and allows researchers to identify bioindicators for any combination for habitat types or areas of interest. (Mc Geoch & Chown, 1998). The spatial distribution of parasitic copepods from teleost fishes (Chelon labrosus, Mugil cephalus, Liza aurata and Dicentrarchus labrax) was studied in two sites (Annaba gulf and El Mellah lagoon) in the eastern Algeria coastline using indicator species analysis (Indval) to identify parasite species as bioindicators of a given ecosystem during 2005-2008, also identified parasites as bioindicators relative to host. The randomization test identified four parasite species (Caligus mugilis, Ergasilus liza, Lernanthropus mugilis, Caligus minimus) having a significant indicator value for the site and six indicators for the host (Caligus mugilis, Ergasilus bora, Lernanthropus kroyeri, Lernanthropus mugilis, Caligus minimus, Ergasilus liza). Data on species composition and infection levels would help improve the monitoring and management of parasitism in Mugilidae and Moronidae populations. However none pointed out the role of parasitic copepods as bioindicators in Algerian costs

Spécificité des parasites monogènes et phylogénie de leur hôtes dans l’est du littoral algérien

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Spécificité des parasites monogènes et phylogénie de leur hôtes dans l’est du littoral algérien

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L’infestation par les hatshekiidae parasites de treize espèces de poissons téléostéens du littoral est algérien

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L’infestation par les hatshekiidae parasites de treize espèces de poissons téléostéens du littoral est algérien

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Detecting monogenean indicator species from teleost fishes off the eastern Algerian coastline using the IndVal method.

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Synthesis, characterization and antibacterial activity of cyclic sulfamide linked to tetrathiafulvalene (TTF)

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