Pollen and Sexual Maturation of the Pea Weevil (Coleoptera: Bruchidae)

Pesho, G. R.; Houten, Ron J. van

doi:10.1093/aesa/75.4.439

Cited by 34 publications

(22 citation statements)

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“…This diapause undoubtedly terminates, once V. unguiculata flowers appear (Germain et al, 1985), as observed in the case of Bruchus pisorum (Pajni and Sood, 1975;Pescho and van Houten, 1982). These adults had probably spent the dry season in a diapausing form.…”

Section: Discussionmentioning

confidence: 81%

Oviposition and development of Bruchidius atrolineatus (Pic) and Callosobrochus maculatus (F.) (Coleopterae: Bruchidae) in Vigna unguiculata (Walp) cultures in Niger

Huignard

Leroi

Alzouma

et al. 1985

Int. J. Trop. Insect Sci.

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Bruchidius atrolineatus (Pic) is present in crops of Vigna unguiculata towards the end of the dry season at the beginning of September when pods start to form. Females lay many eggs on most available green pods. However, this oviposition behaviour results in an important egg mortality. During September, pods gradually reach maturity whilst new pods are formed. Females therefore have at their disposal a growing number of differently mature pods. Confronted with such a situation, B. atrolineatus females show an opportunist behaviour and lay most of their eggs on the most abundant stage, i.e. the most easily discovered stage (ripening green pods in mid-September or dry pods towards the end of September). However, they also lay eggs on other phenological stages no matter how abundant they are. B. atrolineatus females therefore show a certain behavioural plasticity enabling them to reproduce on all stages of pods whose maturity, chemistry and texture may differ. Larvae can develop either in maturing or dry seeds. The number of eggs laid from mid September is lower and lower whatever the phenological stage attacked. This decrease would be due to a reduction of the first generation adult bruchids and of the reproductive potential of females.Callosobruchus maculatus appears in crops at the same time as B. atrolineatus, but oviposits preferentially on dry pods. Eggs are observed during the whole period of study, but the numbers laid are always low. With the increase in pod number, eggs are dispersed among the different substrates available. However, the average number of eggs laid on the pods remains constant. Despite the high mortality due to the oviposition behaviour of B. atrolineatus and to other factors (impact of hymenopterous parasitoids), these two bruchids cause important losses to seeds of V. unguiculata. Control methods against these pests should be envisaged .in the field before harvesting.

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Section: Discussionmentioning

confidence: 81%

Oviposition and development of Bruchidius atrolineatus (Pic) and Callosobrochus maculatus (F.) (Coleopterae: Bruchidae) in Vigna unguiculata (Walp) cultures in Niger

Huignard

Leroi

Alzouma

et al. 1985

Int. J. Trop. Insect Sci.

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“…Gilbert, 1972;Maier, 1978;Pesho & Van Houten, 1982), and rearing experiments with thrips indicate that pollen is necessary for growth, sexual maturation or oviposition in some flower thrips (Andrewartha, 1935;Bournier et al, 1979;Murai & Ishii, 1982). Gilbert, 1972;Maier, 1978;Pesho & Van Houten, 1982), and rearing experiments with thrips indicate that pollen is necessary for growth, sexual maturation or oviposition in some flower thrips (Andrewartha, 1935;Bournier et al, 1979;Murai & Ishii, 1982).…”

Section: Introductionmentioning

confidence: 99%

Pollen‐feeding and the host specificity and fecundity of flower thrips (Thysanoptera)

Kirk

1985

Ecological Entomology

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1. Flower thrips could feed on pollen of a wide range of sizes and were unaffected by exine spines. One species of thrips was unable to feed on very adhesive grains.2. The proportion of time spent feeding on each species of pollen (in seconds per minute of exposure) reflected the known host specificities. Host-specific thrips could distinguish their host pollen, apparently without probing. 3.Kukothrips pisivorw (Westwood) appeared to have a higher rate of ingestion of a host pollen than of four non-host pollens.4. In cages in the laboratory, Thrips fuscipennis Haliday laid significantly more eggs over 48 h when given pollen than when given other floral tissues or no food. K.pisivonu and Ceratothrips ericae (Haliday) also laid significantly more eggs over 48 h in the presence of pollen than in its absence.5. In comparisons between pollen diets, T. fuscipennis, a generalist, laid similar numbers of eggs with each species of pollen, but K.pisiuorus and Cericue laid significantly more eggs with their respective host pollens. The differences in oviposition rate between pollen diets reflected the differences in the proportion of time spent feeding.

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“…Newly emerged female pea weevils must ingest fresh pollen to become sexually mature (10,13), and only limited numbers of egg-bearing females could be collected from the field. Fortunately, the easily reared cowpea weevil provided a suitable alternative.…”

Section: Discussionmentioning

confidence: 99%

“…Indeed, catalytic hydrogenation (Pd͞C; 1 atm; 1 atm ϭ 101.3 kPa) provided docosane-1,22-diol. Ozonolysis gave rise to C 9 and C 13 hydroxyaldehydes, indicating that the diol possessed a 9-10 double bond.…”

Section: Characterization Of Neoplasm-inducing Compounds In Cowpea Wementioning

confidence: 99%

“…Adult pea weevils were collected from experimental plantings of peas in eastern Washington, frozen, and shipped on dry ice to Corvallis, OR. Before extraction, the male and female insects were separated (13). Sexually mature female pea weevils were also obtained by collecting adults as they emerged from infested seed, determining their sex, and placing the females individually into Petri dishes containing several detached pea flowers (to serve as a source of pea pollen).…”

mentioning

confidence: 99%

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Bruchins: Insect-derived plant regulators that stimulate neoplasm formation

Doss

Oliver

Proebsting

et al. 2000

Proc. Natl. Acad. Sci. U.S.A.

228

159

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Pea weevil (Bruchus pisorum L.) oviposition on pods of specific genetic lines of pea (Pisum sativum L.) stimulates cell division at the sites of egg attachment. As a result, tumor-like growths of undifferentiated cells (neoplasms) develop beneath the egg. These neoplasms impede larval entry into the pod. This unique form of induced resistance is conditioned by the Np allele and mediated by a recently discovered class of natural products that we have identified from both cowpea weevil (Callosobruchus maculatus F.) and pea weevil. These compounds, which we refer to as ''bruchins,'' are long-chain ␣,-diols, esterified at one or both oxygens with 3-hydroxypropanoic acid. Bruchins are potent plant regulators, with application of as little as 1 fmol (0.5 pg) causing neoplastic growth on pods of all of the pea lines tested. The bruchins are, to our knowledge, the first natural products discovered with the ability to induce neoplasm formation when applied to intact plants.

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Pollen and Sexual Maturation of the Pea Weevil (Coleoptera: Bruchidae)

Cited by 34 publications

References 0 publications

Oviposition and development of Bruchidius atrolineatus (Pic) and Callosobrochus maculatus (F.) (Coleopterae: Bruchidae) in Vigna unguiculata (Walp) cultures in Niger

Oviposition and development of Bruchidius atrolineatus (Pic) and Callosobrochus maculatus (F.) (Coleopterae: Bruchidae) in Vigna unguiculata (Walp) cultures in Niger

Pollen‐feeding and the host specificity and fecundity of flower thrips (Thysanoptera)

Bruchins: Insect-derived plant regulators that stimulate neoplasm formation

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