Browsing by Author "Bounaceur, Farid"

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Effect of entomopathogenic fungi beauveria bassiana and metarhizium anisopliae var. acridum on the haemolymph of the desert locust schistocerca gregaria
(2011) Milat-Bissaad, Fatma Zohra; Bounaceur, Farid; Halouane, Fatma; Behidj, Nassima; Chebouti, Nadjiba; Doumandji-Mitiche, Bahia
Effect of Beauveria bassiana and Metarhizium anisopliae var. acridum on the 5 th instar nymphs of Schistocerca gregaria was studied in the laboratory. Infection by these both entomopathogenic fungi caused reduction in the hemolymph total protein. Th e average amounts of total proteins were 2.3, 2.07, 2.09 μg/100 ml of haemolymph in the control and M. anisopliae var. acridum , and B. bassiana based- treatments, respectively. Three types of haemocytes were recognized and identified as prohaemocytes, plasmatocytes and granulocytes. The treatment cause d significant reduction in the total haemocyte count and in each haemocyte type on the 9 th day after its application
Etude de l’effet de deux champignons entomopathogenes Beauveria bassiana et Metarhizium anisopliae var acridum sur le comportement alimentaire de Schistocerca gregaria
(2011) Milat-Bissaad, Fatma Zohra; Bounaceur, Farid; Halouane, Fatma; Outtar, Fahima; Doumandji-Mitiche, Bahia
Dans le présent travail il est noté que les deux champignons entomopa thogènes Beauvaria bassiana et Metarhizium anisopliae var acridum, traités par ingestion ont affecté l’évolution pondérale des larves L 5 de Schistocerca gregaria . L’examen des résultats montre de même que le gain de poids moye n après 9 jours de traitement chez les larves du lot témoin est de 0,4230g. Il est de 0,159g pour celles traitées au B. bassiana . Par contre chez les larves traitées avec le M. anisopliae leur gain de poids est très réduit, il est de 0,011g. Concernant la consommation initiale des L 5 de S. gregaria , elle débute au 1 er jour avec 0,716±0,086g pour les témoins contre 0,05±0,008g et 0,691±0,083g respectivement chez les traitées au B. bassiana et au M. anisopliae . Cette consommation augmente et diminue au cours du temps et atteint des valeurs soit supérieures ou inférieures aux valeurs initiales jusqu'à atteindre finalement au 9 ème jour 0,168±0,020g, 0,029±0,005g et 0,068±0,008g respectivement pour les témoins et les traitées au B. bassiana et au M. anisopliae . Les indices nutritionnels de consommation et d’utilisation de la nourriture Coefficient d’Utilisation Di gestive apparent (CUD a ), l’Efficacité de Conversion de la nourriture Digérée en matière corporelle (ECD) et l’Efficacité de Conversion de la nourriture Ingérée en matière corporelle (ECI) ont été aussi affectés par le traitement aux deux cryptogames
Feeding ecology of the vulnerable aoudad (Ammotragus lervia) in north-western Sahara
(John Wiley and Sons Inc, 2023) Bounaceur, Farid; Benamor, Naceur; Bissaad, Fatima Zohra; Lasgaa, Faten; Baghadid, Sabah; Rezigua, Faiza; Aulagnier, Stéphane
The feeding ecology of the aoudad (Ammotragus lervia) was investigated for the first time in north-western Sahara, Djebel Antar (Bechar province, Algeria), from autumn 2015 to summer 2016. Microhistological analyses of faeces revealed an annual diet composed of 23 identified taxa belonging to 16 plant families. The highest species diversity was recorded in spring and summer (23 species), despite a marked consumption of two species: Vachellia tortilis (17.7%) and Avena sterilis (14.0%); diet diversity was lower in autumn and winter (16 species), including mainly Teucrium polium (14.7%, 21.0%) and Gymnocarpos decander (19.7%, 10.0%). The main plant parts consumed during these seasons were stems (77.7%, 65.3%), while leaves and inflorescences were mostly consumed during spring and summer (54.7%, 52.3%). Forbs dominated the aoudad's diet, with 46.3% average relative abundance, including mainly T. polium, Limoniastrum feei, and Chrysanthemum macrocarpum. Woody plants including mainly V. tortilis and G. decander accounted for 33.3% (50.0% in autumn), and grasses including A. sterilis and H. murinum for 20.4% (32.0% in summer). Based on this diet, A. lervia can be classified as a “generalist mixed-feeder.”
Is there a future for the last populations of aoudad (Ammotragus lervia) in northern Algeria?
(Zoological Society of Pakistan, 2016) Bounaceur, Farid; Benamor, Naceur; Bissaad, Fatima Zohra
Very small natural populations of aoudad or barbary sheep remained in northern Algeria. Areas where aoudad has been previously reported were surveyed from 2012 to 2015 in spring and autumn. Animals were recorded at only four localities in the north-eastern part of the mountains, south of Tebessa, Batna, M’Sila and north east of Biskra, and only one in the western part south of Tiaret. Sighted groups included 1 to 11 individuals. The main threats to this species are reported, captive breeding is suggested as a tool for conservation
Monitoring threatened ungulates (Gazella cuvieri and Ammotragus lervia) in the semi-arid North African Nador Mountains
(Verlag der Oesterreichischen Akademie der Wissenschaften, 2022) Bounaceur, Farid; Boualem, Aoued; Abdi, Abdelkader; Bissaad, Fatima Zohra; Kaddouri, Mohamed Amin; Djilal, Mohamed; Zenati, Azeddine; Belgarssa, Yahia; Aulagnier, Stéphane
Cuvier’s gazelle (Gazella cuvieri) and aoudad (Ammotragus lervia) are listed as Vulnerable in the IUCN red list, and any population should be the subject of scientific attention. Both ungulates were monitored for a year in the Nador Mountains (western Algeria). This is the first record of aoudad in this part of Tiaret province. Both species are partly sympatric. However, the aoudad was sighted only in small numbers in the roughest valleys in the north. The gazelle population is larger, but with few juveniles. The future of these wild ungulates is therefore worrying, and new conservation measures are required, including protecting this area