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Bioacoustics of Acanthoscelides obtectus Coleoptera: Bruchinae on Phaseolus vulgaris Fabaceae. Acanthoscelides obtectus Say Coleoptera: Chrysomelidaeis an economically important pest of common bean Phaseolus vulgaris L. Fabaceae in the tropics and subtropics. It is difficult to detect the presence of A.
Characterization of the complete mitochondrial genome of Acanthoscelides obtectus Coleoptera: Bruchinae with phylogenetic analysis. Acanthoscelides obtectus is a common species of the subfamily Bruchinae and a worldwide-distributed seed-feeding beetle. The complete mitochondrial genome of A. It contains a positive AT skew and a negative GC skew. The mitogenome of A. The control region of A. Thirteen PCGs in 19 species have been used to infer their phylogenetic relationships.
Our results show that A. This is the first study on phylogenetic analyses involving the mitochondrial genes of A.
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Effects of gamma radiation and irradiated bean seeds on the dry bean weevil, Acanthoscelides obtectus say Coleoptera: Low dosages of gamma radiation affected the development of immature stages of the bean weevil, Acanthoscelides obtectus Say. Radiosensitivity of the bean weevils decreased during their development, and adults seemed to be the most resistant stage for gamma radiation. There were no significant differences in mortality of immature stages of the pest during their development in beans treated with gamma radiation at dosages up to 1.
Moreover, the females showed no ovipositional preference for untreated or irradiated beans. Fumigated dry common beans Phaseolus vulgaris L. In an additional trial, beans contained in PP bags were treated with Actellic Super dust before introducing A. Moisture content, number of live adult A. Germination of beans stored in PP bags decreased greatly whereas the beans stored in PICS bags did not show reduced germination. For Permissions, please email: Inhibitory activity of Beauveria bassiana and Trichoderma spp.
Cerambycidae and Acanthoscelides obtectus Coleoptera: Xylotrechus arvicola is an important pest in vineyards Vitis vinifera in the main Iberian wine-producing regions, and Acanthoscelides obtectus causes severe post-harvest losses in the common bean Phaseolus vulgaris.
Under laboratory conditions with a spray tower, the susceptibility of the immature stages of X. Both insect pests T. These fungi can be considered a highly effective tool for the control during the immature stages of these species.
Combining parasitoids and plant resistance for the control of the bruchid Acanthoscelides obtectus in stored beans. Abstract Acanthoscelides obtectus Say and Zabrotes subfasciatus Boheman are the main bruchid pests of stored beans in widespread regions of Latin America and Africa. Host-plant resistance based on the protein arcelin is effective in reducing damage caused by Z. Directory of Open Access Journals Sweden.
Full Text Available The paper presents the positive results obtained by some pesticides applied against the bean weevil – Acanthoscelides obtectus Say, after a synthetic rewiew of the potential chemical methods which may be used in the chemical control of the insectes harmful to the stored bean seeds.
The chemical control sjstemas realised treatments wits syntetic pyrethroid permetrin, deltametrin and organophosphoric insecticides malation, pirimifos metil, fenitrotion and chlrorpirifos-metil. This paper relates the results of experiments dealing with irradiation of adults of Ve obtectus Say, The insects were irradiated with doses of 0 control5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 and 20 krad gamma radiation of a 60 Co source.
After irradiation, the adults were kept for observation on beans Phaseolus vulgaris var. Continuous weighing at weekly intervals was done 22 times, showing, by weight loss in percent, that the sterilizing dose chgis adults was 10,65 krad. For a possible employment on commercial scale, the ideal radiation dose for bean desinfestation would be 10 krad, after which no weight loss occurrence.
Ancient and recent evolutionary history of the bruchid beetle, Acanthoscelides obtectus Say, a cosmopolitan pest of beans. Acanthoscelides obtectus Say is a bruchid species of Neotropical origin, and is specialized on beans sistejas the Phaseolus vulgaris L.
Since the domestication and diffusion of beans, A.
Using phylogeographic methods applied to mitochondrial DNA mtDNA and nuclear microsatellite molecular markers, we show that the origin of this species is probably further south than Mesoamerica, as commonly thought. Our results also indicate that A.
In contrast to Mesoamerica where beans fruit once yearly, wild beans in Andean America fruit year-round, especially in regions showing little or no seasonality. In such habitats where resources are continuously present, multivoltinism is adaptive. According to existing hypotheses, multivoltinism in A. Our data suggest the alternative hypothesis that multivoltinism is an older trait, adapted to exploit the year-round fruiting of wild beans in relatively aseasonal habitats, and allowed A. This trait also permitted this species to disperse through human-mediated migrations associated with diffusion of domesticated beans.
We also show that diversity of Old World A. Human-mediated migrations appear not to be rare, as our results indicate a second more recent migration event from Andean America to Mexico.
Gamma 60CO radiation effects on arcelin protein and evaluation of bean lineages against Acanthoscelides obtectus Say and Zabrotes subfasciatus Boh. The resistance of arcelin carrying seeds of bean lineages Phaseolus vulgaris L. Bruchidaeand the influence of gamma radiation 60 CO on the manifestation of arcelin resistance to Z.
Statistical design was completely randomized, with five repetitions, with 10 g of grains from each lineage samples by portion. Attractiveness, oviposition, emergence, mortality, adults’ weigh and longevity, developing period, sexual rate, seeds’ weigh loss, infestation and fecundity Z.
Gamma radiation doses irradiations, in general, haven’t affected the resistance manifestation of lineages carrying arcelin protein variants against the Z.
Raz lineage showed high resistance of the antibiosis types and non-preference for oviposition and feeding to Z. Research performed in Romania emphasized the importance of resistant or tolerant origins use besides the quarantine and fight measures in order to limit the stroke of this pest Manolache et al.
Research aimed to establish the chemical composition of the beans of different origins in the same time with correlation between the different chemical components and their tolerance against A. Full Text Available The most effective, environmentally sound and safety way to fight pests with biological means is the use of resistant varieties to them.
In the present study were indicated the reactions of 30 Bulgarian common bean genotypes to the most economically important enemy — bean weevil Acanthoscelidis obtectus Say. For this purpose, the following indicators were traced — seed damages and young adult insects, which largely characterized the response of different common bean genotypes to that biological pest enemy.
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The results of this investigation present a sensitive response to the estrutufada of different genotypes to the bean weevil. The Esyruturada common bean varieties Plovdiv 11M, Abritus, Crystal and Bulgari can be used in breeding programs as donors of resistance to the bean weevil. Controles alternativos para el gorgojo del frijol Acanthoscelides obtectus Say en granos almacenados a partir de materiales naturales y minerales.
Se evaluaron ocho tratamientos, con cuatro repeticiones cada uno, en arreglo totalmente al azar. Effects of Olea europaea L. Full Text Available Olea europea L. Oreochromis niloticus Nile tilapia were fed twice a day with the feed during 96 hours.
The levels of alanine aminotransferase Sistemaz, aspartate aminotransferase AST, cris phosphatase ALP enzymes and glucose levels in the serums of fishes fed with pure compounds were found to be higher as compared with the control group. Pure metabolites affect the liver metabolism of Nile tilapia. These results suggested that the compounds tested affect the liver metabolism of Nile tilapia.
The toxic effects of the metabolites were lower than those of the insecticide, dichlorvos DDVP. DDVP caused complete mortality of the insects after 48 hours of treatments, the metabolites caused the mortality rates Maslinic acid 3 has the most toxic compound with the lowest LC 50 values 0.
These results show that maslinic acid 3 as well as other substances can be used as natural insecticides against these pests. Efficacy sidtemas vegetable oils against dry bean beetles Acanthoscelides Acanthoscelides obtectus Say is a major pest of stored dry beans Phaseolus vulgaris L. The objective of this study was to assess the efficacy of castor Ricinus communis L.
Bruchidae soit sur Acanthoscelides macrophthalmus Schaef. Bruchidae or on Acanthoscelides macrophthalmus Schaef. Identified estruturqda Substitution Hosts.
In this study, we have measured some biological parameters of Dinarmus basalis Rond. Pteromalidae when this parasitoid grows on three hosts: The results of this comparative study in no choice situation show that, life duration and development duration of this parasitoid are identical in laboratory conditions.
By contrast, the female fecundity, the sexual rate and the parasitism rate of D. Although such differences appear to be small between C. In presence of these two species, the number of eggs laid by the female of D. This indicates that these two Bruchids can be used as hosts to D. In presence of B. This situation is unfavourable for a parasitoid production. This parasitism rate remains high for C. Thus the parasitoid seems to have a preference for his natural host.
Full Text Available Due to the reduced toxicity in humans and livestock, and also because they does not develop strength to insects or let toxic residues, the use of vegetal insecticides is of great interest both from an economic and ecological point of view Golob and contributors,Multon,