Life history of flight morph females of Callosobruchus maculatus F.: evidence of a reproductive diapause

Zannou, Élisabeth; Glitho, Isabelle Adolé; Huignard, J.; Monge, J. P.

doi:10.1016/s0022-1910(03)00029-5

Cited by 28 publications

(34 citation statements)

References 18 publications

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“…The observation of the anatomical structure of the reproductive system of C. subinnotatus individuals of non reproductive morph suggests that they may exist in this species of beetle, a reproductive diapause as described in various species [14,[31][32][33]. However, further studies in histology and biochemistry like those done by several authors [33][34][35] on weevils are needed to determine the nature of this physiological behavior.…”

Section: Discussionmentioning

confidence: 86%

Potential Reproductive Activity of Callosobruchus subinnotatus Pic. (Coleoptera: Bruchinae), Bambara Groundnut (Vigna subterranea Verd.) Depredator

Nyamador¹,

Mondedji²,

Ketoh³

et al. 2016

JLS

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Callosobruchus subinnotatus Pic. (Coleoptera: Bruchinae) is the most important depredator of Bambara groundnut seeds (Vigna subterranea Verd.) in West Africa. In view of an efficient control of its populations, some of the biological parameters of C. subinnotatus were determined under laboratory conditions (30 ± 2 °C; 72 ± 2% HR; 12h: 12h LD). The results have shown that the mean lifespan of females (11.36 ± 1.85 days) is shorter than that of males (15.14 ± 2.4 days). The female lays 80.83% eggs within the first 6 days after her emergence with a mean fecundity of 121.34 ± 27.62 eggs. The means egg fertility, survival and adult emergence rates are respectively 96.19 ± 1.45%, 97.72 ± 1.08% and 94.01 ± 2.14%. The sex ratio is in favor of males with a mean of 0.845 ± 0.08. The monitoring of adult emergence in connection with their reproductive status showed that the offspring of C. subinnotatus consists of two physiotypes, a reproductive type that appears during the first 8 days of emergence with a short development time (28.35 ± 3.36 days) and a non reproductive type that appears from the 9th day of emergence with a longer development time (37.92 ± 3.92 days).

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Section: Discussionmentioning

confidence: 86%

Potential Reproductive Activity of Callosobruchus subinnotatus Pic. (Coleoptera: Bruchinae), Bambara Groundnut (Vigna subterranea Verd.) Depredator

Nyamador¹,

Mondedji²,

Ketoh³

et al. 2016

JLS

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“…It was also reported that second instar larvae were sensitive to the high temperature for producing the active form adults. Zannou et al [36] simply referred to reproductive diapause in the life history of the flight morph females of C. maculatus. Suzuki [3] concluded his studies on C. maculatus by stating that the reproductive diapause is induced by the increase of temperature caused by larval density and the same was advantageous because such plasticity enabled weevils to lay more eggs during the harvest time and to enter reproductive diapause during the planting season in the field and, once in the storage, the constant resource availability leads to the evolution of non plastic adults with high fecundity and short life cycle.…”

Section: Observationsmentioning

confidence: 99%

Untitled

2017

J. Entomol. Zool. Stud.

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Callosbruchus maculatus (Fab.) is a cosmopolitan species of bruchids and is popularly called as cowpea weevil as it is a major pest of Vigna ungiculata (L.). However it attacks a number of edible legumes in addition to V. ungiculata in different regions. Moreover it also shows variable behavior during its life cycle, being a field type in some parts and storage type species in others. It also acts as an intermediate species spending some part of its life in the field and some part in the store. C. maculatus has been reported to appear in two forms during the course of the year, a normal form and an active form or flight form which is more active and much less fecund than the normal form. The active form shows facultative reproductive diapause. The behavior of this form is quite different in different parts of the globe, with its Indian strain showing complete sterility. We have carried out detailed investigations on the Indian strain of C. maculatus during last many years. The present report includes a review of our own work as well as other relevant studies on this subject in order to project its phenotypic plasticity in the Indian strain as of exceptional type. Suggestions for its true status have also been recorded.

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“…in response to environmental variations. They have two distinct adult morphs; a flightless, inactive, normal or sedentary morph and a flight or active morph (Nahdy et al 1999;Zannou et al 2003). This polymorphism of bruchids arises from their different ecological niches (Messina 1990).…”

Section: Introductionmentioning

confidence: 99%

“…Being sexually active, they multiply rapidly up to 4-5 generations and after higher larval densities or due to genetic predispositions, adults of the flight morph begin to emerge (Arnold et al 2012). Study shows that this type of polymorphism is induced by the increase in temperature, seed water content, larval density and post embryonic development (Zannou et al 2003). The flight morphs are able to survive until the next rainy season for repeating the cycle (Monge and Huignard 1991).…”

Section: Introductionmentioning

confidence: 99%

Botanicals as eco friendly biorational alternatives of synthetic pesticides against Callosobruchus spp. (Coleoptera: Bruchidae)—a review

et al. 2013

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The article presents the potential of botanicals in the management of Callosobruchus spp., the primary insect pest causing deterioration to a variety of stored legume grains. Different botanical formulations have been reported time to time showing pronounced insecticidal activity, repellence to pest, oviposition deterrency, adult emergence inhibition, ovicidal, larvicidal, pupaecidal activity and feeding deterrency based on their contact toxicity and fumigation effects. Some of the botanicals have also been practically proved efficacious to protect the stored food commodities from the bruchids during storage conditions. Such botanical formulations have shown their promise in integrated management of the pest as semiochemicals by showing behaviour altering efficacy against the bruchids, thereby, reducing the induced pest resistance problem which is frequently reported with synthetic pesticides. Hence, they may be recommended in food security programmes as eco-friendly and biorational alternatives of synthetic pesticides providing integrated management of the losses of stored food commodities due to infestation of bruchids.

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Life history of flight morph females of Callosobruchus maculatus F.: evidence of a reproductive diapause

Cited by 28 publications

References 18 publications

Potential Reproductive Activity of Callosobruchus subinnotatus Pic. (Coleoptera: Bruchinae), Bambara Groundnut (Vigna subterranea Verd.) Depredator

Potential Reproductive Activity of Callosobruchus subinnotatus Pic. (Coleoptera: Bruchinae), Bambara Groundnut (Vigna subterranea Verd.) Depredator

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Botanicals as eco friendly biorational alternatives of synthetic pesticides against Callosobruchus spp. (Coleoptera: Bruchidae)—a review

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