The genus callosobruchus was formerly in the family bruchidae. Three compounds, 18cineole, carvacrol, and eugenol, caused almost 100% adult mortality at doses as low as 5. Consequences of inbreeding for the cowpea seed beetle. The effect of 2tridecanone vapor on the cowpea weevil callosobruchus maculatus development was determined. Chromosome 10 is a sex chromosome and males are the hetergametic sex figure 3. Female access to water, sugar and yeast are manipulated and the. Insecticidal activity of 2tridecanone against the cowpea. This was to determine the level of quality deterioration of the cowpea varieties.
Thus, availability of these goods in the environment seems to determine the importance of male seminal donations. This larval competition confers an advantage on females that disperse eggs uniformly. Severely damaged seeds are disfigured with eggs and riddled with adult exit holes and consequently reduced the nutritional and economic values of the grains ogunkoya and ofuya, 2001. Pronunciation of callosobruchus maculatus with 2 audio pronunciations, 1 meaning and more for callosobruchus maculatus. Callosobruchus maculatus is a species of beetles known commonly as the cowpea weevil or cowpea seed beetle. Coleoptera in chickpea article pdf available in journal of entomology and zoology studies 42. It is sometimes found in seed imported into canada. Each seed is a discrete resource package,so that much of the biology of seed beetles is similar to the biology of parasitoids. Callosobruchus maculatus, germination, nutrient quality,vigna unguiculata i. Studies on the life history and ovi positional preference of. Although it is commonly known as the adzuki bean weevil it is in fact not a true weevil, belonging instead to the leaf beetle family, chrysomelidae. Control of cowpea weevil, callosobruchus maculatus f.
Introduction beans in nigeria is consumed in many forms as beans cake, beans puddy, baked beans, beans soup, fried beans amongst others 1. Egglaying preference and hatching rates of callosobruchus maculatus. Life cycle and longevity of the adult phase of callosobruchus maculatus f. Two populations of the seedfeeding beetle callosobruchus maculatus, a species that produces relatively large nuptial gifts, are used to test whether female nutritional status affects mating behaviour.
Cosmopolitan, probably of west africa origin, whence it was distributed around the globe with the trade in legumes host plants. The reproductive success of callosobruchus maculatus fabricius, the main insect pest of stored cowpea, may vary between strains of this beetle and between varieties of the host seeds. Life cycle and hostes of callosobruchus maculatus coleoptera. Bruchidae, is a worldwide insect pest that infests pulses in the fields and seeds in storage.
Female oviposition decisions and their impact on progeny. The morphometric measurements revealed that the average length and breadth of egg were 0. Effect of callosobruchus maculatus infestation on nutritional loss on. Bruchidae to test whether they conform to predictions of an optimality model.
The cowpea weevil, callosobruchus maculatus fabricius coleoptera. The genus callosobruchus was formerly in the family bruchidae common name. The larvae of this species feed and develop exclusively on the seed of legumes fabaceae. The life cycle consisted of egg, four larval instars l 1, l 2, l 3 and l 4, pupa and adult.
View callosobruchus maculatus research papers on academia. Fumigation toxicity of essential oil monoterpenes to. Males have spines on their intromittent organs that puncture the female reproductive. Diet affects female mating behaviour in a seedfeeding beetle. Department of animal ecology evolutionary biology centre university of uppsala. Callosobruchus maculatus, stored cowpea, methanolic extracts insecticidal plant, pollination introduction view at starvation and undernourishment and 33% of children suffer from chronic malnutrition 1, 2. Assessment of damage due to callosobruchus maculatus coleoptera. The fumigant toxicity of eight essential oil components, 18cineole, carvacrol, eugenol. The acrobat pdf version of this publication, though identical in content to the print version, differs slightly in format from the print version. Effect of the infection of callosobruchus maculatus fab. General information about callosobruchus maculatus calsma eppo global database. Efforts are being made by the government in order to increase agricultural production, but selfsufficiency. A handbook on bean beetles, callosobruchus maculatus bean. Callosobruchus maculatus fabricius taxonomic placing.
Callosobruchus maculatus fabricius 82 callosobruchus phaseoli gyllenhal. We examined whether such congenital differences affect the degree to which host preference can be modified by experience. Biology and morphometric measurement of cowpea weevil. Efficacy of plant extracts against the cowpea beetle, callosobruchus maculatus article pdf available in international journal of pest management 50. Callosobruchus maculatus bean beetle by alissa walens on. Abstract extending the storage life of legumes by protecting it from the callosobruchus maculatus infestation is a major concern for the. Chrysomelidae is a holometabolous insect with larval and pupal stages confined within a bean, which may be shared by several individuals ofuya and agele 1989.
Similar levels of adult beetle mortality were achieved with the remaining five components. The effects of copulation duration in the bruchid beetle callosobruchus maculatus martin edvardsson address correspondence to m. Adult weevils reddishbrown slightly elongate beetles compared to the typical rounded appearance of other members of this family bruchids. The cowpea seed beetle, callosobruchus maculatus fab. Control over copulation duration is a potentially important generator of sexual conflict that has received little empirical attention.
Bruchidae infestation on germination and nutrient quality of vigna unguiculata l. The population is cultured using a standard procedure credland, 1987 which maintains a large number of insects in each generation. Novel ovipostion discussion like comment share in this experiment it was speculated if c. Other common names include the pulse beetle, chinese bruchid and cowpea bruchid. This species is very interesting in the fact that adult beetles have no need for food or water as their short lifespan of one to two weeks is spent mating and laying eggs. Ambayeba muimbakankolongo, in food crop production by smallholder farmers in southern africa, 2018. Fumigant toxicity of crushed fresh bulbs of allium sativum l. The evolution of oviposition tactics in the bean weevil. Variation in egg and adult production of callosobruchus maculatus f. Bioefficacy of plant derivatives on the repellency, damage. Several plant could be used to protect the seeds against insects infestation. The duration of the different states of the cowpea weevils, callosobruchus maculatus f. Callosobruchus maculatus an overview sciencedirect topics.
Experiments using naive females established differences in host specificity among geographic strains of the seed beetlecallosobruchus maculatus. It has been reported that callosobruchus maculatus could cause 6080% damage to cowpea seeds stored for a period of six months hill, 1983. Although weevillike they are not true weevils curculionidae and do not have heads prolonged into a long snout. Reduction of postharvest loss caused by callosobruchus maculatus f. Infestation of a single species of bruchid callosobruchus maculatus f. It causes substantial quantitative and qualitative losses manifested by seed perforation and reductions in weight, market value and germination ability of seeds. Experimental confirmation of bean preference for callosbruchus maculatus females tyler bayles, radaya ellis, jocelyn kopac, zach zimmerman department of biology, university of wisconsin whitewater abstract the purpose of this study is determine the existence or lack of bean preference in callosobruchus maculatus. Olfactory and ovipositional preference of two strains of callosobruchus chinensis. Walp, is one of the five most important legumes in the tropics and provides the protein for most people in the region and nitrogen to the soils duke, 1990. The female grubs shows an oviposition period, with an average of duration, of 10. Bruchidae, is a cosmopolitan fieldtostore pest ranked as the principal postharvest pest of cowpea in the tropics. Introduction to the acrobat pdf edition the acrobat pdf version of this publication, though identical in content to the print version, differs slightly in format from the print version. Bambara groundnut seeds are liable to a simultaneous attack by two species of bruchidae, callosobruchus subinnotatus pic and particularly by callosobruchus maculatus f. This species also is known as the southern cowpea weevil.
Chysomelidae infestation level on control using different particle sizes of eugenia aromatic and piper guineense powders. Among the multitude of male copulatory behaviors and reproductive traits are some that appear to be harmful to females. Other examples come from the bruchid beetle callosobruchus maculatus and the dung fly. We utilized this 33 data to build combined assemblies for each species which were then analysed in detail. Messina and tinney 1991, followed by a freeliving adult form. Males of both these species have spines on their intromittent organs that harm the female reproductive tract during mating and leave scars blanckenhorn et al.
However, the weevils discriminated among the cultivars in fourchoice tests and showed. A handbook on bean beetles, callosobruchus maculatus. Rearing and identification of callosobruchus maculatus bruchidae. Apr 23, 2011 the cowpea weevil callosobruchus maculatus is a stored product pest of cowpeas, chickpeas and mung beans. Effect of experience on host preference in callosobruchus. An investigation has been conducted on the life history and ovipositional preference of callosobruchus maculatus reared on five different pulses. It is a member of the leaf beetle family, chrysomelidae, and not a true weevil. Assessment of damage due to callosobruchus maculatus. Larval competition reduces body condition in the female. Dec 31, 2014 the cowpea weevil, callosobruchus maculatus f. Oviposition decisions in the seed beetle, callosobruchus.
Heritable variation in body size is well described fox et al. Semiochemical modulation of host preference of callosobruchus. This common pest of stored legumes has a cosmopolitan distribution, occurring on every continent except antarctica. Callosobruchus maculatus bean beetle by alissa walens on prezi. One mendelian trait has been described for bean beetles, body color which is autosomal and has alleles with incomplete dominance.
The results of this study demonstrated fumigant toxicity of some essential oil components to c. Pdf efficacy of plant extracts against the cowpea beetle. Callosobruchus maculatus fabricius, bruchidae seed beetle is a common postharvest pest of stored legumes in tropical and subtropical regions. Callosobruchus chinensis is a common species of beetle found in the bean weevil subfamily, and is known to be a pest to many stored legumes. Both sexes lived in laboratory conditions a maximum of 16 days. Callosobruchus maculatus has a karyotype of ten chromosome pairs 2n20. Egglaying preference and hatching rates of callosobruchus. May 18, 2005 other examples come from the bruchid beetle callosobruchus maculatus and the dung fly sepsis cynipsea.
It has been maintained on cowpea, using a californian cultivar usually known as blackeye beans, since this date. We used cowpeas vigna unguiculata of two class sizes large. Why do male callosobruchus maculatus harm their mates. Oviposition decisions in the seed beetle, callosobruchus maculatus. The beetle most likely originated in west africa and moved around the globe with the trade of. Despite the best 50 efforts of generations of biologists, its species are only sparsely sampled and are yet to be 51 comprehensively described, with approximately 90% of coleopteran diversity as yet. Life cycle of bean beetles, callosobruchus maculatus. Fumigant toxicity of eugenol and its negative effects on biological. Female oviposition decisions and their impact on progeny life. This experiment was conducted by six individual groups of four students each in biology 106 life science in the fall semester 2016 at piedmont virginia community college. Callosobruchus maculatus exploration of the deciding. Studies on the life history and ovi positional preference.
Our sampling 32 covered key stages in ovary and early embryonic development in each species. The cowpea weevil callosobruchus maculatus is a stored product pest of cowpeas, chickpeas and mung beans. Larval competition reduces body condition in the female seed. Handbook of the bruchidae of the united states and canada.
Cosmopolitan, probably of west africa origin, whence it was distributed around the globe with the trade in legumes. Also, in volume 2 the items on the errata list for the print version have been corrected. Life history parameters of beetle strains from three different origins in west africa were compared on two susceptible varieties of cowpea, vigna unguiculata l. We studied response of callosobruchus maculatus to odors of three legume seeds.
There are a number of species of callosobruchus that may be found attacking pulses, of which the most common and well known is c. Bruchinae, are agricultural pest insects of africa and asia that presently range throughout the tropical and subtropical world. Ten varieties of cowpea grains were infested with callosobruchus maculatus. Gcead and gcms revealed 2ethylhexanol as the bioactive component. Whenever two or more eggs are on a bean, development takes 40 days rather than 33 days, and only 8% of the second eggs develop even in beans with resources enough for two larvae. Edvardsson, who is now at the centre for conservation and ecology, school of biosciences, university of exeter in cornwall, tremough campus, penryn, tr10 9ez, uk. Female seed beetles, callosobruchus maculatus, remate for.
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