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Phylogenetic information reveals the peculiarity of Caryedon serratus (Coleoptera, Chrysomelidae, Bruchinae) feeding on Cassia sieberiana DC (Caesalpinioideae)
M Sembène, K Kébé, A Delobel, JY Rasplus
African Journal of Biotechnology , 2010,
Abstract: Studies over the past 20 years on natural populations indicated that sympatric speciation may be far more common and widespread among plants and animals than previously thought. By using molecular phylogenetics (on a combined data set of two genes), the relationships between Caryedon serratus native forms and forms feeding on groundnut was investigated. The specific objectives were to clarify the taxonomic status of C. serratus feeding on Cassia sieberiana DC. Morphological analysis was conducted, using parts of the adult specimens which were dry-mounted for the studies. Morphological study comprised extraction of the genitalia, which were cleared and mounted in Canada balsam following standard procedures. Results showed a strong differentiation of insects from different hosts’ trees, with specimens from C. sieberiana possibly representing a sibling species.
Effet structurant de la plante h te chez la bruche de l'arachide, Caryedon serratus (Olivier, 1790) (Coleoptera : Bruchidae)  [PDF]
Sembène, M.,Kébé, K.,Delobel, A.
Biotechnologie, Agronomie, Société et Environnement , 2012,
Abstract: Structuring effect of the host plant in the groundnut bruchid, Caryedon serratus (Olivier, 1790) (Coleoptera: Bruchidae). Twenty-six samples of the groundnut seed-beetle which were reared from pods of five different host plants (Arachis hypogaea L., Bauhinia rufescens Lam., Cassia sieberiana DC., Piliostigma reticulatum (DC.) Hochst. and Tamarindus indica L.) in four localities of Senegal were compared using electrophoresis based on six loci of four enzymatic systems. The population structure of Caryedon serratus Olivier was analysed using Weir and Cockerham's estimator of Wright's F-statistics. θ value (0.235) and the dendrogram of Rogers'genetic distances revealed a high degree of genetic differentiation between host plants. Genetic analysis without C. sieberiana samples indicated that populations form host races which are partially isolated according to their host plants (θ = 0.035). Geographical distances between localities are not decisive for genetic structuration of C. serratus populations from a given host plant.
Biocidal Effect of Leaves of Crataeva religiosa Forst on a Resistant Strain of Groundnut Bean Caryedon serratus (Olivier)  [PDF]
Aminata Gningue, Toffène Diome, Khady Fall, Mbacké Sembène
Advances in Entomology (AE) , 2019, DOI: 10.4236/ae.2019.74007
Abstract: Groundnut (Arachis hypogaea L.) is a legume that is highly coveted by West African populations, particularly those in Senegal. However, it suffers enormous damage caused by a bruchidae beetle, Caryedon serratus. This lust rests on its richness in proteins, calories and the absence of major constraints for its production. Losses recorded can reach 83% for a period of 4 months of storage. To counter this damage, several authors have looked for alternative methods to the use of synthetic insecticides, often harmful to animal populations and the environment. In this logic, we tested the biological impact of a leaf-based formulation of plants indigenous to Senegal (Crateva religiosa) on the external forms of C. serratus. In this study, analysis of the biological parameters of strain C. serratus showed low adult mortality of C. serratus. On the other hand, the extract affects the viability of eggs and larvae and fertility is reduced. The effect of the C. religiosa plant also results in reduced fertility of surviving females and a sex ratio in favor of the males causing a risk of decreasing population growth. On the other hand, there is an extension of the total development time.
Checklist of the Bulgarian Bruchinae (Coleoptera: Chrysomelidae)  [PDF]
ZooNotes , 2011,
Abstract: Checklist of Bulgarian Bruchinae (Coleoptera: Chrysomelidae) based on published data till 2011 is presented. Eighty-five species belonging to nine genera are listed.
Morfologia comparada dos gêneros do grupo Merobruchus (Coleoptera: Chrysomelidae: Bruchinae): diagnoses e chave
Silva, José Aldir P. da;Ribeiro-Costa, Cibele Stramare;
Revista Brasileira de Zoologia , 2008, DOI: 10.1590/S0101-81752008000400021
Abstract: a comparative analysis was carried out based on the detailed morphology of adults of seven genera: caryedes hummel, 1827, ctenocolum kingsolver & whitehead, 1974, gibbobruchus pic, 1913, meibomeus bridwell, 1946, merobruchus bridwell, 1946, penthobruchus kingsolver, 1973, and pygiopachymerus pic, 1911, joined in the merobruchus group. this group is included in acanthoscelidina bridwell, the largest subtribe of bruchinae, and with imprecise limits. this study describes new characters, suggests a new hypothesis for the relationships among the genera, proposes diagnoses of the group and its genera, and provides a dichotomous key. it was also possible to record caryedes godmani (sharp, 1885) and caryedes longifrons (sharp, 1885) for the first time from brazil and dioclea virgata (rich.) amshoff (papilionoideae) as a new host plant for c. godmani.
A New Seed Beetle Species to the Bulgarian Fauna: Bruchidius siliquastri, Delobel (Coleoptera: Chrysomelidae: Bruchinae)  [PDF]
Anelia M. Stojanova,Zoltán Gy?rgy,Zoltán László
Ecologia Balkanica , 2011,
Abstract: A seed beetle Bruchidius siliquastri DELOBEL, 2007 (Coleoptera: Chrysomelidae) was reared from ripe pods of Cercis siliquastrum (Fabaceae) in Bulgaria and this is the first record of the species to the Bulgarian fauna. New host plants of the bruchid species were established on the basis of material collected in Hungary: Cercis occidentalis, Cercis chinensis and Cercis griffithii. A rich hymenopteran complex associated with the seed beetle was reared and comments on it are presented.
Preda??o de sementes de Allagoptera arenaria (Gomes) O'Kuntze (Arecaceae) por Pachymerus nucleorum Fabricius (Coleoptera, Chrysomelidae, Bruchinae)
Grenha, Viviane;Macedo, Margarete V. de;Monteiro, Ricardo F.;
Revista Brasileira de Entomologia , 2008, DOI: 10.1590/S0085-56262008000100009
Abstract: seed predation on allagoptera arenaria (gomes) o'kuntze, 1891(arecaceae) palm by pachymerus nucleorum fabricius, 1972 was evaluated from september 2003 to september 2005 at the parque nacional da restinga de jurubatiba (pnrj), rio de janeiro, brazil. the biology and behaviour of p. nucleorum on a. arenaria and predation rates were described. fruits found beneath 50 palms were collected, monthly, for each one of the two sampled areas at pnrj (ridge forest and clusia sclthdl (clusiaceae) open shrubland formation). the evaluation of preyed fruits was done by counting exit holes of bruchinae in the field, the emergence of these insects in the laboratory and from fruits dissected. it was verified that pachymerus nucleorum oviposit on young developing infrutescences, different from literature records for other palm species, for which oviposition takes place on the fruit already on the ground. fruit predation by p. nucleorum was 29.3% at ridge forest and 20.6% at clusia open shrubland formation. the life cycle of p. nucleorum was long and with wide range of variation within samples, what suggests a possible diapause in some stage of life cycle.
The mature larva of Gonioctena variabilis (Olivier, 1790) Coleoptera, Chrysomelidae, Chrysomelinae) and key to the larvae of the subgenus Spartoxena  [cached]
Andres Baselga
ZooKeys , 2010, DOI: 10.3897/zookeys.33.333
Abstract: Mature larva of Gonioctena (Spartoxena) variabilis (Olivier, 1790) is described and illustrated for the first time, based on specimens collected on Genista scorpius (L.) DC. [Fabaceae] in central Spain. A key to known larvae of the subgenus Spartoxena is provided, and the diagnostic characters are illustrated. Diagnostic characters for the identification of species within the subgenus Spartoxena Motschulsky, 1860 are number of dorsal tubercles of abdominal segments, shape of tarsal claw, shape of labrum and disposition of microtrichia of epipharynx. Notes on the distribution and host plant of G. variabilis are included.
Inventory, Geographical Distribution of Caryedon Species in Burkina Faso, and Evaluation of Their Impact on Stored Groundnut  [PDF]
Issoufou Ouedraogo, Mbacke Sembene, Dona Dakouo
Advances in Entomology (AE) , 2017, DOI: 10.4236/ae.2017.52005
Abstract: To understand the mechanism of infestation of stored groundnut in farming areas, studies on the inventory and geographical distribution of Caryedon species were carried out in the tree savannah and in producers’ storage structures. The incidence of C. serratus in stored groundnut was evaluated. Inventory and geographical distribution of insects belonging to Caryedon genus was achieved through a sampling in the savannah and producers’ granaries. The inventory and geographical distribution of insects was made throughout Burkina Faso whereas the evaluation of the perforations of groundnut pods was made in the western zone of the country. The results of the inventory showed the presence of two species belonging to Caryedon genus which are C. serratus and C. crampelii. These species are found on the agro-ecological zones of the country. The survival and maintenance of Caryedon species genus are ensured by the presence of plants belonging to various families such as Caesalpiniceae and Mimosaceae. The evaluation of the losses caused by C. serratus in producer’s stored groundnut revealed that the pods perforation rate varied according to the locality. In?Toussiana, the rate of perforated pods ranged from 53.72% to 100% in five months while in?Karangasso Sembla, for the same conservation time, the rate was in the range from 2.8% to 35%. However it is C. serratus which is responsible for the losses observed in the stored groundnut. Indeed, in the western area of Burkina Faso where more than 25% of the production is realized, 70% of
Desenvolvimento de uma técnica de cria??o para Cerotoma arcuatus Olivier (Coleoptera: Chrysomelidae) em laboratório
Neotropical Entomology , 2002, DOI: 10.1590/S1519-566X2002000100008
Abstract: studies were carried out aiming to develop a laboratory rearing technique for cerotoma arcuatus olivier. for larvae rearing, soybean and bean seedlings grown on vermiculite substrate were used. viability and duration of larva-adult period were evaluated. in the adult phase, the egg-laying capacity under temperatures of 20°c, 25°c and 30°c as well as the feeding preference on soybean, bean, cowpea and pumpkin leaves were evaluated through free choice, double choice and no choice tests. soybean seedlins grown on vermiculite was the most adequate substrate for rearing c. arcuatus. insects reared on bean seedlings had the viability of the larva-adult period reduced. egg laying capacity was not affected by rearing substrate or temperature. as the temperature increased a higher percentage of females that did not oviposit as well as a more concentrated oviposition rhythm were observed. c. arcuatus adults preferred soybean, bean and pumpkin leaves as compared to cowpea leaves. the use of soybean seedlings grown on vermiculite for the immature phases and soybean leaves for the adults made possible the continuous rearing of c. arcuatus in the laboratory.
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