Beck department of biology, emory university christopher. Studies on the life history and ovi positional preference of. Gender differences in lifespan and mortality rates in two. One mendelian trait has been described for bean beetles, body color which is autosomal and has alleles with incomplete dominance. Callosobruchus is one of the genera in the subfamily bruchinae seed beetles that is in the family chrysomeloidae kergoat et al. The genus callosobruchus was formerly in the family bruchidae common name. Mating rate and fitness in female bean weevils behavioral. Bruchinae, are agricultural pest insects of africa and asia that presently range throughout the tropical and subtropical world. Callosobruchus maculatus bean beetle by alissa walens on. It is in the subfamily bruchinae, the bean weevils. Biology and morphometric measurement of cowpea weevil.
Cosmopolitan, probably of west africa origin, whence it was distributed around the globe with the trade in legumes. Callosobruchus maculatus has a karyotype of ten chromosome pairs 2n20 yadav 1971. It has been maintained on cowpea, using a californian cultivar usually known as blackeye beans, since this date. A handbook on bean beetles, callosobruchus maculatus christopher w. Callosobruchus is a genus of beetles in the family chrysomelidae, the leaf beetles. Sexual selection affects lifespan and aging in blackwell. Infestation of a single species of bruchid callosobruchus maculatus f. Heredity 2004 92 2004 nature publishing group all rights. Callosobruchus maculatus fabricius taxonomic placing. Kristen bosch, joseph adamson, amanda schuilling, alicia castillo, daniel faghihnia dr. Genetic architecture of population differences in oviposition behaviour of the seed beetle callosobruchus maculatus c.
The cowpea weevil, callosobruchus maculatus fabricius. Pdf ovipositional preference and development of callosobruchus. Does seed size mediate sexspecific reproduction costs in the. To do this, we quantified 6 components of fitness in female bruchid beetles, callosobruchus maculatus, that were mated between 1 and 4 times to males with unknown mating histories, either in isolation or with rival males present. Female oviposition decisions and their impact on progeny. Populations of callosobruchus maculatus vary substantially in lifespan, body size, and a suite of morphological, behavioral, and life history traits. Genetic architecture of population differences in oviposition. Figure 3, karyotypes of bean beetles, callosobruchus maculatus, was reprinted with permission from.
Callosobruchus maculatus fabricius, bruchidae seed beetle is a common postharvest pest of stored legumes in tropical and subtropical regions. 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. The female grubs shows an oviposition period, with an average of duration, of 10. Callosobruchus maculatus f adults coleoptera, bruchidae. As copulation number increased, fecundity, offspring production, and eggtoadult survival declined. Fabaceae, seeds are vulnerable, both in the field and in storage, to attack by seedbeetles. The genetic architecture of life span and mortality rates. Sexes suffer from suboptimal lifespan because of genetic. Control of cowpea weevil, callosobruchus maculatus f. We also expected that development in smaller seeds would negatively affect the sizes of gifts produced by males and increase the longevity costs associated with gift production for males.
The systematic placement of bean beetles is as follows. The callosobruchus maculatus bean beetles are indigenous to west africa, and are believed to have been displaced though the movement of legume crops. Life cycle of bean beetles, callosobruchus maculatus. Density dependent polymorphism in the adult of callosobruchus maculatus.
Female callosobruchus maculatus can maximize longterm. These weevils cause loss of quality, quantity and seed. We examine the inbreeding load for adult life span and mortality rates of two seed beetle species, callosobruchus maculatus and stator limbatus. The mechanism of the fecundity reduction in callosobruchus. The flying form is more common in beetles that developed in conditions of high larval density and high temperatures. The increase in offspring lifespan with increasing maternal age is also not a consequence of a maternal age effect on offspring body size. Maternal age affects offspring lifespan of the seed beetle, callosobruchus maculatus article in functional ecology 176. The population is cultured using a standard procedure credland, 1987 which maintains a large number of insects in each generation. Female oviposition decisions and their impact on progeny life.
The effect of maternal age on offspring lifespan was greater for male. This study used the bean weevil, callosobruchus maculatus, to examine the functions, causal relationships and lifehistory consequences of aspects of reproductive morphology and behaviour within the framework of sexual conflict theory. The life cycle consisted of egg, four larval instars l 1, l 2, l 3 and l 4, pupa and adult. Bruchidae, is a worldwide insect pest that infests pulses in the fields and seeds in storage.
The mechanism of the fecundity reduction in callosobruchus maculatus caused by callosobruchus chinensis males daisuke kyogoku takayoshi nishida received. Callosobruchus maculatus is a cosmopolitan pest of stored legumes fabaceae. Chromosome 10 is a sex chromosome and males are the hetergametic sex figure 3. Biochemical studies of amylase, lipase and protease in callosobruchus maculatus coleoptera. Cosmopolitan, probably of west africa origin, whence it was distributed around the globe with the trade in legumes host plants. Smith, 1991, but this insect also illustrates some of the complexities associated with estimating the cost of reproduction. Heritable variation in body size is well described fox et. This common pest of stored legumes has a cosmopolitan distribution, occurring on every continent except antarctica. Ambayeba muimbakankolongo, in food crop production by smallholder farmers in southern africa, 2018. Messina department of entomology, s225 agricultural science center north, university of kentucky, lexington, ky, usa. Evolutionary genetics of lifespan and mortality rates in two populations of the seed beetle, callosobruchus maculatus cw fox1, ml bush1, da roff2 and wg wallin1 1department of entomology, s225 agricultural science center north, university of kentucky, lexington, ky 405460091, usa.
Pdf three oils olive oil, local oil and sunflower oil were tested for. Bruchidae, is a cosmopolitan fieldtostore pest ranked as the principal postharvest pest of cowpea in the tropics. Populations of callosobruchus maculatus vary substantially in lifespan, body size, and a suite of morphological, behavioral, and life history traits messina, 1990. Females took about a quarter of a day longer to develop from an egg to an adult and lived. Sexual conflict in the bean weevil, callosobruchus maculatus. It causes substantial quantitative and qualitative losses manifested by seed perforation and reductions in weight, market value and germination ability of seeds. Life cycle and longevity of the adult phase of callosobruchus maculatus f. Laboratory rearing of active phase of callosobruchus 587 discussion from the present study it is obvious that active i. Laboratory rearing of the active phase of callosobruchus.
Life cycle of bean beetles, callosobruchus maculatus coleoptera. The cowpea bruchid callosobruchus maculatus is the most important. The morphometric measurements revealed that the average length and breadth of egg were 0. View callosobruchus maculatus research papers on academia. The adults do not require food or water and spend their limited lifespan one two weeks mating and laying eggs on beans. Inbreeding load differs substantially between males and females in both study populations of c. Cosmopolitan, probably of west africa origin, whence it was distributed around the globe with the trade in legumes host. Bibliography of callosobruchus research in ecology and evolution. Studies on the life history and ovi positional preference. Biology and host preference of pulse beetle callosobruchus.
In most animals, females live longer than males, and large individuals live longer than small individuals. Experiments using naive females established differences in host specificity among geographic strains of the seed beetlecallosobruchus maculatus. Callosobruchus maculatus has a karyotype of ten chromosome pairs 2n20. Dec 11, 2003 we examine the effects of offspring genotype, maternal age and paternal age on offspring survival, development and adult lifespan in the seed beetle, callosobruchus maculatus. It is a member of the leaf beetle family, chrysomelidae, and not a true weevil. This species also is known as the southern cowpea weevil. A very short adult life span and a larval stage in which. Callosobruchus maculatus an overview sciencedirect topics. Beck, professor of pedagogy, emory university, and lawrence s. Effect of experience on host preference in callosobruchus. Beetles of the genus callosobruchus are major storage pests of chickpea crops and cause considerable economic losses. Crudgington and sivajothy, 2000, but it seems that females benefit from multiple mating only when they are maintained without water and nutrition, as is the norm in callosobruchus experiments. 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.
Interspecific hybridization and abnormal strain of callosobruchus maculatus coleoptera bruchidae. Effect of the infection of callosobruchus maculatus fab. Callosobruchus maculatus is a species of beetles known commonly as the cowpea weevil or cowpea seed beetle. The duration of the different states of the cowpea weevils, callosobruchus maculatus f. Bambara groundnut seeds are liable to a simultaneous attack by two species of bruchidae, callosobruchus subinnotatus pic and particularly by callosobruchus maculatus f. Sex differences in the genetic architecture of lifespan in. In chapter 2, the gross genital anatomy of male and female c. Maternal age affects offspring lifespan of the seed beetle. Although weevillike they are not true weevils curculionidae and do not have heads prolonged into a long snout. In recent years, the bean weevil, callosobruchus maculatus bruchidae, has become a model system for the study of sperm competition, malefemale mating interactions, and sexual conflict. Mortality factors affecting callosobruchus maculatus f. This species is an excellent model system for this analysis because it exhibits large sexual dimorphism in lifespan and ageing rates 2527, and there is strong evidence for sexually divergent selection on these traits 11.
Sharp cuticular spines on the male intromittent organ. This figure shows a female and b male agespecific hazard rate ln. Blumer, professor of biology, morehouse college excerpted from a handbook on bean beetles, callosobruchus maculatus. Dec 31, 2014 the cowpea weevil, callosobruchus maculatus f. The cowpea seed beetle, callosobruchus maculatus f.
Available formats pdf please select a format to send. Preliminary results on evaluation of chickpea, cicer. The flying form has a longer lifespan and lower fecundity, and the sexes are less dimorphic and can be more difficult to tell apart. Adult weevils reddishbrown slightly elongate beetles compared to the typical rounded appearance of other members of this family bruchids. Females mate multiply, and a few experiments have addressed various aspects of the economics of mating interactions. There are a number of species of callosobruchus that may be found attacking pulses, of which the most common and well known is c. The cowpea seed beetle, callosobruchus maculatus fab. Bibliography of callosobruchus research in ecology and. A handbook on bean beetles, callosobruchus maculatus bean. We examined whether such congenital differences affect the degree to which host preference can. In the present study, a total of 11 chickpea genotypes including five kabuli mexican white, diyar, ca 2969, ilc 8617. Life cycle and hostes of callosobruchus maculatus coleoptera. Pdf the effect of some vegetable oil on adult longevity and. Consequences of inbreeding for the cowpea seed beetle.
Dec 15, 2014 to do this, we quantified 6 components of fitness in female bruchid beetles, callosobruchus maculatus, that were mated between 1 and 4 times to males with unknown mating histories, either in isolation or with rival males present. Reduction of postharvest loss caused by callosobruchus maculatus f. Evolutionary genetics of lifespan and mortality rates in two. The mechanism of the fecundity reduction in callosobruchus maculatus caused by callosobruchus chinensis males.
Differences in adult lifespan among strains were only detected in unmated but not in. Environmentdependent reversal of a life history tradeoff. Evolutionary genetics of lifespan and mortality rates in two populations of the seed beetle, callosobruchus maculatus. It is likely that the tradeoffs between reproduction and somatic maintenance. We examine both gender and body size effects on adult lifespan in two species of seed beetles callosobruchus maculatus and stator limbatus, and test whether body size differences between males and females can explain gender. The reproductive and life cycles of the bean beetle are fully dependent on the host bean the female chooses to deposit her egg on.
Comparison of life history and genetic properties of cowpea bruchid. The genus callosobruchus was formerly in the family bruchidae. A handbook on bean beetles, callosobruchus maculatus. Novel ovipostion discussion like comment share in this experiment it was speculated if c. An investigation has been conducted on the life history and ovipositional preference of callosobruchus maculatus reared on five different pulses. Both sexes lived in laboratory conditions a maximum of 16 days. Variation in egg and adult production of callosobruchus maculatus f. Adults of most species known from stored pulses may be identified using the bruchid key in haines 1991. Many beetles in the genus are well known as economically important pests that infest stored foodstuffs these beetles specialize on legumes of the tribe phaseoleae, which includes many types of beans used for food. Dec 12, 2019 maculatus, we expected that development in smaller seeds would result in reduced adult body mass and a shortened lifespan for both sexes. There was also a positive relationship between male body size and male longevity. Environmentdependent reversal of a life history tradeoff in. Biochemical studies of amylase, lipase and protease in.
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