The cuticular hydrocarbons of Pamphagus elephas (Orthoptera: Pamphagidae) has been analysed by ga... more The cuticular hydrocarbons of Pamphagus elephas (Orthoptera: Pamphagidae) has been analysed by gas chromatography and by combined gas chromatograph-mass spectrometry. The following hydrocarbon classes have been identified in insect cuticular hydrocarbons are: n-alkanes and methylalkanes comprising Monomethyl-, dimethyl-and trimethylalkanes. Sexual dimorphism is observed in long chain alkanes (C24-C36) present on male and female. The cuticulars hydrocarbons of P.elephas ranged from 24 to 36 carbons and incluted n-alkanes, Dimethylalkanes and Trimethylalkanes. nalkanes represented by (C24-C36,72,7% on male and 79,2% on female), internally branched Monomethylalkanes identified were (C25, C30-C32,C35-C37;11% on male and 9,4% on female), Dimethylalkanes detected are (C31-C32, C36; 2,2% on male and 2,06% on female) and Trimethylalkanes detected are (C32, C36; 3,1% on male and 4, 97 on female). Larvae male and female (stage 7) showed the same quality of n-alkanes observed in adults. Howeve...
Abstract. Cereal grains are the major source of food for humans and most domesticated animals. In... more Abstract. Cereal grains are the major source of food for humans and most domesticated animals. In many developing countries like Algeria, overall post-harvest losses of cereals and legums of about 10–15 % are fairly common. The study was conducted in Setif high plains in the north east of Algeria. The Setif region is one of the important areas for the production of cereal crops. The objective of this work was to survey the insects pests stored in different stored products in Setifian region. Using different methods: manual samples, traps, and probes have been used to determine the presence of insects and manual inspection, sieving, cracking-floatation and Berlese funnels are used at present to detect insects in grain. We recorded seven species (6 Coleoptera: Trogoderma granarium, Tribolium castaneum, Rhyzopertha dominica, Tribolium confusum, Sitophilus granarius, Tenebrio molitor and 1 Lepidoptera: Ephestia kuehnielle). The relative abundance of the different species was discussed. ...
Forests are an essential component of the natural environment, as they support biodiversity, sequ... more Forests are an essential component of the natural environment, as they support biodiversity, sequester carbon, and play a crucial role in biogeochemical cycles—in addition to producing organic matter that is necessary for the function of terrestrial organisms. Forests today are subject to threats ranging from natural occurrences, such as lightning-ignited fires, storms, and some forms of pollution, to those caused by human beings, such as land-use conversion (deforestation or intensive agriculture). In recent years, threats from pests and pathogens, particularly non-native species, have intensified in forests. The damage, decline, and mortality caused by insects, fungi, pathogens, and combinations of pests can lead to sizable ecological, economic, and social losses. To combat forest pests and pathogens, biocontrol may be an effective alternative to chemical pesticides and fertilizers. This review of forest pests and potential adversaries in the natural world highlights microbial ino...
Pinus halepensis Mill., is an essence from the Pinaceae family. This importance is attributed to ... more Pinus halepensis Mill., is an essence from the Pinaceae family. This importance is attributed to its economic and aesthetic values. Despite its robustness, this tree is subject to many degradation factors including, for some time, that of wood-boring insects which for the most part are fatal. The purpose of this investigation is to classify these insects, define their role in pine decline and evaluate the damage caused by them in the Megsem forest. The result of the study shows that members of the Curculionidae, Cerambycidae and Buprestidae families could be held responsible for the majority of the damage observed on the pine Keywords: Pinus halepensis, decline, Megsem, wood-boring insects, Algeria
Eucalyptus camaldulensis is an essence of the family Myrtaceae. It resists a certain salt content... more Eucalyptus camaldulensis is an essence of the family Myrtaceae. It resists a certain salt content and the sea wind. Despite that, it subject to many factors of degradation as parasitic and harmful insects. In the last years, an insect is detected on the foliage of Eucalyptus camaldulensis trees in Algeria (North-East region). The results made it possible evidence the presence of one harmful species Leptocybe invasa Fisher & La Salle 2004 (Hymenoptera: Eulophidae), this parasite has been detected in 2006, The Chronology of Gall’s emergence of Leptocybe invasa and its field infestation rate were followed since 2010, in Eucalyptus plantation in the North-East Region. Some statistical methods of Gall’s emergence of this pest is reviewed and discussed. First, after exploration, we selected the most affected trees, second, we organized the samples of each tree, we respected the orientation (North-South-East-West). For each study site 10 trees were marked. 30 leaves of each tree were rem...
A field survey was undertaken during 2006-2008. Entomological fauna was collected in four forest ... more A field survey was undertaken during 2006-2008. Entomological fauna was collected in four forest stations from national forest of Tafat (North-east of Algeria) using a quantitative sampling method. 152 species were found during the current field survey divided into 57 Coleoptera, 35 Hymenoptera, 29 Hemiptera, 18 Diptera and 13 Lepidoptera. Majority of the species collected are polyphagous. The results of the survey of insectes show that the risk on Quercus ilex from Tafat forest. To characterize the structure, diversity and dynamic of insect populations were discussed.
Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 2011
Cereal grains are the major source of food for humans and most domesticated animals. In many deve... more Cereal grains are the major source of food for humans and most domesticated animals. In many developing countries like Algeria, overall post-harvest losses of cereals and legums of about 10–15% are fairly common. The study was conducted in Setif high plains in the north east of Algeria. The Setif region is one of the important areas for the production of cereal crops. The objective of this work was to survey the insects pests stored in different stored products in Setifian region. Using different methods: manual samples, traps, and probes have been used to determine the presence of insects and manual inspection, sieving, cracking-floatation and Berlese funnels are used at present to detect insects in grain. We recorded seven species (6 Coleoptera: Trogoderma granarium, Tribolium castaneum, Rhyzopertha dominica, Tribolium confusum, Sitophilus granarius, Tenebrio molitor and 1 Lepidoptera: Ephestia kuehnielle). The relative abundance of the different species was discussed. Trogoderma ...
Biodiversitas Journal of Biological Diversity, 2021
Abstract. Moumeni L, Gastebois A, Gillmann L, Papon N, Benia F, Bouchara J-P, Bounechada M. 2021.... more Abstract. Moumeni L, Gastebois A, Gillmann L, Papon N, Benia F, Bouchara J-P, Bounechada M. 2021. Investigating the prevalence of Bark beetles of Pinus halepensis in the North East semi-arid region of Algeria. Biodiversitas 22: 2755-2762. Aleppo pine is the most common tree in the semi-arid forests of Algeria. Despite its high resistance to drought and adaptability to all types of soils, the effects of climate change are affecting it directly and indirectly. Stressed trees indeed are subject to bark beetle attacks. In this study, we sampled the bark beetles directly from the affected pine trees. Six species belonging to the Scolytinae subfamily were identified. Tomicus detruens and Orthotomicus erosus were widely spread and present in the three studied forests, where they were found to colonize living trees while Crypturgus numidicus, Crypturgus mediterraneus, Hylurgus ligniperda and Hylurgus micklitzi colonized only dead trees. Together with future identification of the microfungi ...
The cuticular hydrocarbons of Pamphagus elephas (Orthoptera: Pamphagidae) has been analysed by ga... more The cuticular hydrocarbons of Pamphagus elephas (Orthoptera: Pamphagidae) has been analysed by gas chromatography and by combined gas chromatograph-mass spectrometry. The following hydrocarbon classes have been identified in insect cuticular hydrocarbons are: n-alkanes and methylalkanes comprising Monomethyl-, dimethyl-and trimethylalkanes. Sexual dimorphism is observed in long chain alkanes (C24-C36) present on male and female. The cuticulars hydrocarbons of P.elephas ranged from 24 to 36 carbons and incluted n-alkanes, Dimethylalkanes and Trimethylalkanes. nalkanes represented by (C24-C36,72,7% on male and 79,2% on female), internally branched Monomethylalkanes identified were (C25, C30-C32,C35-C37;11% on male and 9,4% on female), Dimethylalkanes detected are (C31-C32, C36; 2,2% on male and 2,06% on female) and Trimethylalkanes detected are (C32, C36; 3,1% on male and 4, 97 on female). Larvae male and female (stage 7) showed the same quality of n-alkanes observed in adults. Howeve...
Abstract. Cereal grains are the major source of food for humans and most domesticated animals. In... more Abstract. Cereal grains are the major source of food for humans and most domesticated animals. In many developing countries like Algeria, overall post-harvest losses of cereals and legums of about 10–15 % are fairly common. The study was conducted in Setif high plains in the north east of Algeria. The Setif region is one of the important areas for the production of cereal crops. The objective of this work was to survey the insects pests stored in different stored products in Setifian region. Using different methods: manual samples, traps, and probes have been used to determine the presence of insects and manual inspection, sieving, cracking-floatation and Berlese funnels are used at present to detect insects in grain. We recorded seven species (6 Coleoptera: Trogoderma granarium, Tribolium castaneum, Rhyzopertha dominica, Tribolium confusum, Sitophilus granarius, Tenebrio molitor and 1 Lepidoptera: Ephestia kuehnielle). The relative abundance of the different species was discussed. ...
Forests are an essential component of the natural environment, as they support biodiversity, sequ... more Forests are an essential component of the natural environment, as they support biodiversity, sequester carbon, and play a crucial role in biogeochemical cycles—in addition to producing organic matter that is necessary for the function of terrestrial organisms. Forests today are subject to threats ranging from natural occurrences, such as lightning-ignited fires, storms, and some forms of pollution, to those caused by human beings, such as land-use conversion (deforestation or intensive agriculture). In recent years, threats from pests and pathogens, particularly non-native species, have intensified in forests. The damage, decline, and mortality caused by insects, fungi, pathogens, and combinations of pests can lead to sizable ecological, economic, and social losses. To combat forest pests and pathogens, biocontrol may be an effective alternative to chemical pesticides and fertilizers. This review of forest pests and potential adversaries in the natural world highlights microbial ino...
Pinus halepensis Mill., is an essence from the Pinaceae family. This importance is attributed to ... more Pinus halepensis Mill., is an essence from the Pinaceae family. This importance is attributed to its economic and aesthetic values. Despite its robustness, this tree is subject to many degradation factors including, for some time, that of wood-boring insects which for the most part are fatal. The purpose of this investigation is to classify these insects, define their role in pine decline and evaluate the damage caused by them in the Megsem forest. The result of the study shows that members of the Curculionidae, Cerambycidae and Buprestidae families could be held responsible for the majority of the damage observed on the pine Keywords: Pinus halepensis, decline, Megsem, wood-boring insects, Algeria
Eucalyptus camaldulensis is an essence of the family Myrtaceae. It resists a certain salt content... more Eucalyptus camaldulensis is an essence of the family Myrtaceae. It resists a certain salt content and the sea wind. Despite that, it subject to many factors of degradation as parasitic and harmful insects. In the last years, an insect is detected on the foliage of Eucalyptus camaldulensis trees in Algeria (North-East region). The results made it possible evidence the presence of one harmful species Leptocybe invasa Fisher & La Salle 2004 (Hymenoptera: Eulophidae), this parasite has been detected in 2006, The Chronology of Gall’s emergence of Leptocybe invasa and its field infestation rate were followed since 2010, in Eucalyptus plantation in the North-East Region. Some statistical methods of Gall’s emergence of this pest is reviewed and discussed. First, after exploration, we selected the most affected trees, second, we organized the samples of each tree, we respected the orientation (North-South-East-West). For each study site 10 trees were marked. 30 leaves of each tree were rem...
A field survey was undertaken during 2006-2008. Entomological fauna was collected in four forest ... more A field survey was undertaken during 2006-2008. Entomological fauna was collected in four forest stations from national forest of Tafat (North-east of Algeria) using a quantitative sampling method. 152 species were found during the current field survey divided into 57 Coleoptera, 35 Hymenoptera, 29 Hemiptera, 18 Diptera and 13 Lepidoptera. Majority of the species collected are polyphagous. The results of the survey of insectes show that the risk on Quercus ilex from Tafat forest. To characterize the structure, diversity and dynamic of insect populations were discussed.
Bulletin of the University of Agricultural Sciences and Veterinary Medicine Cluj-Napoca, 2011
Cereal grains are the major source of food for humans and most domesticated animals. In many deve... more Cereal grains are the major source of food for humans and most domesticated animals. In many developing countries like Algeria, overall post-harvest losses of cereals and legums of about 10–15% are fairly common. The study was conducted in Setif high plains in the north east of Algeria. The Setif region is one of the important areas for the production of cereal crops. The objective of this work was to survey the insects pests stored in different stored products in Setifian region. Using different methods: manual samples, traps, and probes have been used to determine the presence of insects and manual inspection, sieving, cracking-floatation and Berlese funnels are used at present to detect insects in grain. We recorded seven species (6 Coleoptera: Trogoderma granarium, Tribolium castaneum, Rhyzopertha dominica, Tribolium confusum, Sitophilus granarius, Tenebrio molitor and 1 Lepidoptera: Ephestia kuehnielle). The relative abundance of the different species was discussed. Trogoderma ...
Biodiversitas Journal of Biological Diversity, 2021
Abstract. Moumeni L, Gastebois A, Gillmann L, Papon N, Benia F, Bouchara J-P, Bounechada M. 2021.... more Abstract. Moumeni L, Gastebois A, Gillmann L, Papon N, Benia F, Bouchara J-P, Bounechada M. 2021. Investigating the prevalence of Bark beetles of Pinus halepensis in the North East semi-arid region of Algeria. Biodiversitas 22: 2755-2762. Aleppo pine is the most common tree in the semi-arid forests of Algeria. Despite its high resistance to drought and adaptability to all types of soils, the effects of climate change are affecting it directly and indirectly. Stressed trees indeed are subject to bark beetle attacks. In this study, we sampled the bark beetles directly from the affected pine trees. Six species belonging to the Scolytinae subfamily were identified. Tomicus detruens and Orthotomicus erosus were widely spread and present in the three studied forests, where they were found to colonize living trees while Crypturgus numidicus, Crypturgus mediterraneus, Hylurgus ligniperda and Hylurgus micklitzi colonized only dead trees. Together with future identification of the microfungi ...
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