Influence of larval diapause on male response to female sex pheromone in Trogoderma granarium, Everts (Coleoptera: Dermestidae)

Gothi, K.K.; Tamhankar, Ashok J.; Rahalkar, G. W.

doi:10.1016/0022-474x(84)90011-0

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…Nutrients in the male ejaculate have been suggested to affect female longevity (Chapman et al, 1995;Wagner et al, 2001). For example, in the Khapra beetle Trogoderma granarium Everts, post-diapause males were progressively less attracted to the pheromone source than the non-diapause generation (Gothi et al, 1984). Consequently, a decrease in protein in the ejaculate of D-long males may have negatively affected female longevity.…”

Section: Discussionmentioning

confidence: 99%

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Effects of diapause on post‐diapause reproductive investment in the moth Ostrinia scapulalis

Win

Ishikawa

2015

Entomologia Exp Applicata

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Diapause is a strategy used by many insect species to survive adverse environmental conditions. However, diapause incurs costs that may have adverse effects on post-diapause development and reproduction. We herein investigated the effects of diapause on the post-diapause reproductive investment of males and females in a multivoltine moth, the adzuki bean borer, Ostrinia scapulalis (Walker) (Lepidoptera: Crambidae). We found that (1) post-diapause males and females were smaller and had lower mating success than non-diapause individuals, (2) post-diapause females had lower fecundity and shorter longevity than non-diapause females, (3) post-diapause males transferred similar numbers of eupyrene and apyrene sperm as non-diapause males, (4) the fecundity and longevity of non-diapause females mated with post-diapause males and those mated with non-diapause males were not significantly different, and (5) no significant relationship was found between diapause duration (short and long) and post-diapause reproductive investments in both males and females. These results suggest that post-diapause males did not reduce reproductive investment in spite of the cost of diapause, and the significant decline in reproductive output in post-diapause females was due to their reduced body weight and longevity, which appeared to be direct consequences of the cost of diapause.

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Section: Discussionmentioning

confidence: 99%

“…Moreover, the ability of the pheromone response may vary depending on the physiological condition of a male. For example, in the Khapra beetle Trogoderma granarium Everts, post-diapause males were progressively less attracted to the pheromone source than the non-diapause generation (Gothi et al, 1984).…”

Section: Discussionmentioning

confidence: 99%

Effects of diapause on post‐diapause reproductive investment in the moth Ostrinia scapulalis

Win

Ishikawa

2015

Entomologia Exp Applicata

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“…Mating success of C. partellus males from aestivation and hibernation experiencing populations is significantly lower compared with that from nondiapausing ones, which could be a result of a compromised physical condition and/or the physiological response of such males in terms of a pheromone response when attempting courtship with counterpart females. For example, in Trogoderma granarium Everts, post‐diapause males are progressively less attracted to the pheromone source than those from the nondiapause generation (Gothi et al ., ). Moreover, significant differences are also found in spermatophores in the bursa copulatrix of females from diapausing and nondiapausing populations.…”

Section: Discussionmentioning

confidence: 99%

Consequences of diapause on post‐diapause development, reproductive physiology and population growth of Chilo partellus (Swinhoe)

Dhillon

Hasan

2018

Physiol. Entomol.

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We investigate the effects of diapause on post‐diapause development, reproductive physiology and population growth of Chilo partellus (Swinhoe) (Crambidae: Lepidoptera). Aestivating and hibernating larvae of C. partellus are exposed to diapause terminating conditions (consisting of an LD 12 : 12 h photocycle at 27 ± 1 °C and 65 ± 5% relative humidity with a fresh diet) to terminate the diapause and observations are made on percentage pupation, pupal duration and weight, adult reproductive performance and population growth parameters. We find that the diapause in C. partellus significantly reduces the percentage pupation and weights of pupae, ultimately lowering the weight and reproductive performance of adults. Reduced weights of adult females are found to be directly associated with a lower number of egg cells in ovaries. Nevertheless, the reproductive performance of C. partellus males is also found to be greatly affected in the diapause (hibernation and aestivation) experiencing population in terms of the deposition of a lower number of spermatophores and eupyrene sperm in the reproductive tracts of females compared with the nondiapausing population. The results of the present study clearly indicate that a reduction in longevity, fecundity and egg viability, as well as a reduced rate of deposition of spermatophores and eupyrene sperm, in a diapause experiencing population of C. partellus ultimately leads to a reduction in population growth parameters, thus having implications for bio‐ecology and population dynamics under a changing climatic scenario.

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Oleic acid emitted from frozen Trogoderma spp. larvae causes conspecific behavioral aversion

et al. 2020

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Influence of larval diapause on male response to female sex pheromone in Trogoderma granarium, Everts (Coleoptera: Dermestidae)

Cited by 7 publications

References 15 publications

Effects of diapause on post‐diapause reproductive investment in the moth Ostrinia scapulalis

Effects of diapause on post‐diapause reproductive investment in the moth Ostrinia scapulalis

Consequences of diapause on post‐diapause development, reproductive physiology and population growth of Chilo partellus (Swinhoe)

Oleic acid emitted from frozen Trogoderma spp. larvae causes conspecific behavioral aversion

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