Ahmed Taibi | University of Tlemcen (original) (raw)

Papers by Ahmed Taibi

Chapitre III-Résultats sur la pie-grièche méridionale Lanius meridionalis dans deux stations de l... more Chapitre III-Résultats sur la pie-grièche méridionale Lanius meridionalis dans deux stations de la partie orientale de la Mitidja : bioécologie, régime alimentaire et reproduction. . 3.1.-Résultats sur la place de Lanius meridionalis au sein du peuplement avien dans la station de Baraki. . 3.1.1.-Inventaire et effectifs des espèces d'oiseaux recensées dans la station de Baraki. . 3.1.2.-Qualité de l'échantillonnage des espèces aviennes recensées au cours des passages dans les quadrats. . 3.1.3.-Richesses totales et moyennes des oiseaux obtenues dans le quadrat à Baraki. . 3.1.4.-Densité spécifique des oiseaux recensées dans la station de Baraki entre 2007 et 2009. . 3.1.5.-Abondances relatives des oiseaux dans la station Baraki entre 2007 et 2009. . 3.1.6.-Indice de diversité de Shannon-Weaver et Equatibilité des espèces aviennes dans la station de Baraki entre 2007 et 2009. . 3.2.-Résultats sur la reproduction de la pie-grièche méridionale dans la station de Baraki et dans les jardins de l'E.N.S.Ag. (El Harrah). . 3.2.1.-Etude biométrique des nids de Lanius meridionalis dans la station de Baraki entre 2007 et 2009. . 3.2.2.-Biométrie des oeufs de Lanius meridionalis entre 2007 et 2009. . 3.2.3.-Dates de pontes, des éclosions et des envols des jeunes de la piegrièche méridionale dans les stations de Baraki et de l'E.N.S.Ag. entre 2007 et 2009. . 3.2.4.-Succès de la reproduction de Lanius meridionalis. . 3.2.5.-Courbe de croissance des oisillons de Lanius meridionalis dans les jardins de l'école national supérieure agronomique d'El-Harrach en 2007. . 3.3.-Exploitation des résultats sur les proies ingérées par Lanius meridionalis à Ramdhania et à Baraki. . 3.3.1.-Exploitation des résultats portant sur les espèces-proies trouvées dans les pelotes de rejection de Lanius meridionalis à Ramdhania et à Baraki. . 3.3.2.-Exploitation des données sur les disponibilités alimentaires potentielles pour la pie-grièche méridionale dans les deux stations de Ramdhania et de Baraki. . 3.3.3.-Lardoires dans le régime alimentaire de Lanius meridionalis à Ramdhania et à Baraki entre mars et octobre 2006. . 3.3.4.-Exploitation par d'autres indices des espèces ingérées et de celles des disponibilités alimentaires de Lanius meridionalis dans les stations de Ramdhania et de Baraki entre 2006 et 2009. . 3.3.5.-Exploitation des résultats sur le régime alimentaire et sur les disponibilités trophiques de Lanius meridionalis par des techniques statistiques. . Chapitre IV-Discussions sur la pie-grièche méridionale dans deux stations de la partie orientale de la Mitidja : bio-écologie, reproduction et régime alimentaire. . 4.1.-Discussion porté sur la bio-écologie de Lanius meridionalis dans la station de Baraki entre 2007 et 2009. . 4.2.-Discussion sur la reproduction de Lanius meridionalis dans la station de Baraki et dans les jardins de l'E.N.S.Ag. (El Harrah). . 4.3.-Discussion portant sur le régime trophique de Lanius meridionalis dans deux stations celle de Ramdhania et de Baraki en 2006-2008. . 4.4.-Discussion portant sur les disponibilités alimentaires potentielles pour Lanius meridionalis dans les stations de Ramdhania et de Baraki entre 2006 et 2009. . 4.5.-Discussion sur les lardoires du régime alimentaire de Lanius meridionalis à Ramdhania et à Baraki entre mars et octobre 2006. . 4.6.-Discussion sur les résultats sur les proies de Lanius meridionalis notés dans les stations de Ramdhania et de Baraki entre 2006 et exploités par d'autres indices. . CONCLUSION. . Références bibliographiques. . Annexes. .

GABJ, 2021

The present study consists in making an inventory of the scorpionic fauna at the level of the Alg... more The present study consists in making an inventory of the scorpionic fauna at the level of the Algerian north-west (Tlemcen, Naama and Bechar). Following a 10-month survey, we were able to collect a total of 117 living scorpions, they are grouped into 8 species belonging to two large families (Buthidae and Scorpionidae). Indeed, it is at the Teiher station in the wilaya of Tlemcen where the large number of scorpions was collected about 90 individuals. According to the results of the outings and among the scorpions sampled, it appears that the animals belong to the Buthidae family of which 6 species have been identified namely: Androctonus amoreuxi, Androctonus australis, Buthus tuneatanus, Buthus oudjanii, Hottentotta franzwerneri and Orthochirus innesi. Concerning the Scorpionidae family, two species of which have been identified, namely: Scorpio maurus and Scorpio punicus. The largest species in size is Hottentota franzwerneri with a total length of 101 mm (cephalothorax 12 mm, abd...

Journal of Crop Protection, 2019

Effects of four vegetable host plants, artichoke, cabbage, potato and tomato on nutritional indic... more Effects of four vegetable host plants, artichoke, cabbage, potato and tomato on nutritional indices of the cotton leafworm Spodoptera littoralis (Boisduval) (Lep.: Noctuidae), were studied under laboratory conditions (25 ± 1 °C, 65 ± 5% RH, with a 16: 8 L: D photoperiod). Fourth instar reared on tomato showed the highest approximate digestibility (AD) (90.406 ± 1.125%) and efficiency of conversion of ingested food (ECI) (30.249 ± 4.128%). The highest values of efficiency of conversion of digested food (ECD) and ECI of fifth instars (38.663 ± 4.34 and 20.083 ± 1.581%, respectively) were on artichoke and the lowest of both values on cabbage (ECD: 6.314 ± 1.128 and ECI: 5.448 ± 1.052%).The 3 to 6 instars as a whole showed the highest ECD and ECI values on tomato (23.412 ± 2.252 and 19.845 ± 1.798%, respectively). However, the highest and lowest values of consumption index (CI) were on cabbage (33.943 ± 2.669) and tomato (6.145 ± 0.578). The highest values of relative consumption rate (...

Algerian Journal of Arid Environment, 2017

2018 International Conference on Electrical Sciences and Technologies in Maghreb (CISTEM)

In Algeria, the essential oils market is very modest and the development of this sector remains a... more In Algeria, the essential oils market is very modest and the development of this sector remains a problem to be solved. Artemisia herba alba (white wormwood) is aromatic and medicinal plant rich in essential oils. It is in great demand by the national and international industrial sectors: pharmaceutical, food, cosmetics …). The extraction by conventional hydrodistillation gives low yield, a solution presented in this article is to make a pulsed electric field treatment to intensify the extraction of essential oils. The results indicate a good influence of the PEF on the efficiency of HE with reduction of the extraction time. The extraction yields obtained, for example being 2.05% for only 30 min of distillation after treatment with PEF (3kV / cm, n = 100) is 03 times more than a traditional extraction. This result will undoubtedly have a major socio-economic impact.

The island of Rachgoun (35 ° 19 'N, 1 ° 28' W) is located off Bay Beni-Saf which is bound... more The island of Rachgoun (35 ° 19 'N, 1 ° 28' W) is located off Bay Beni-Saf which is bounded by Cape Acra west and Cape Oulhassa east. Patelle ferruginea is a species of mollusks protected in Algeria and has in the Mediterranean. This is the largest limpet Mediterranean. In the present study this species is present especially in the south and east of the island. The density of individuals is in the majority of individuals of less than 3 / m² and in some cases of 10 individuals / m² case. Its thick shell and comprises solid 30-50 large protruding ribs. The large diameter shells fluctuate between 4.03 cm and 7.93 cm. With respect to the small diameter of the shells, these values range from 3.17 to 6.72 cm. The heights of the shells fluctuate from 9.3 to 3.65 cm. The wet weight with shells vary from 8.5 to 80 g. Key words: Giant limpet, island of Rachgoun, biometrics, mollusk.

Journal of Entomological Research, 2016

Lebanese Science Journal, 2016

Advances in Environmental Biology, Jun 1, 2014

Pakistan Journal of Zoology, Apr 4, 2015

Alauda

Diets of two subspecies of the Southern Grey Shrike Lanius meridionalis in Maghreb. Diets of two ... more Diets of two subspecies of the Southern Grey Shrike Lanius meridionalis in Maghreb. Diets of two subspecies of Southern Grey Shrike, Lanius meridionalis algeriensis and Lanius meridionalis elegans, were respectively studied in the North of Algeria and in the South of the country in the Sahara. Pellets examination allowed to identify more than 200 ingested taxa (more than 1500 prey). There was a significant difference in diet between both studied subspecies (P < 0.001), due to the respective importance of Coleopteran and Orthopteran preys. In the North, algeriensis con- sumed mostly Coleoptera, while in South, in February, elegans ingested mostly Orthoptera. Hymenoptera are found in both diets in relatively important quantities. Explanations are required.

The study of the diet of the Southern Grey Shrike in the Eastern part of Mitidja made it possible... more The study of the diet of the Southern Grey Shrike in the Eastern part of Mitidja made it possible to specify its characteristics. The wealth of consumed preys équal to 194 spiecies. In 102 pellets examined, a total of 1455 prey were identified. Gryllidae sp. ind. appears most abundant with 15.6 % in Ramdhania and 12.6 % in Baraki. It is to be stressed that the diversity of the introduced preys is strong. Indeed the H’ is 6.1 bits in Ramdhania and 5.5 bits in Baraki. As for the Equitability it is equal to 0.82 in Ramdhania and 0.86 in Baraki. Lanius meridionalis consume especially preys with biomasses important, with generally soft body and easy to catch like Gryllidae sp. ind. (18.7 %) in Ramdhania and 7.3 % in Baraki and Messor barbara with 5.9 % in Ramdhania and 4.2 % in Baraki. Keywords : Diet, Eastern part of Mitidja, Southern Grey Shrike, pellets, richeness, frequencies, diversity index, equitability.

Two stations located in the oriental part of the Mitidja plain were studied. The first one is sit... more Two stations located in the oriental part of the Mitidja plain were studied. The first one is situated in Ramdhania and the second in Baraki. During the spring period, the study of Lanius meridionalis pellets demonstrates that, in both stations, the relative values of the consumed biomass are high: 46.3% in Ramdhania and 76.1% in Baraki (A.R. % > 2xm; m=25%). During the winter period, Ramdhania station is still strongly represented (45.8%). This rate is weaker in Baraki station (3.9%). The other seasons (summer and autumn) are slightly represented. Keywords: biomass, diet, Lanius meridionalis, Mitidja