Results 1 to 10 of about 79 (66)

The influence of age on reproductive performance of the predatory ladybird beetle, Propylea dissecta [PDF]

open access: yesJournal of Insect Science, 2004
The influence of age on reproductive performance of an aphidophagous ladybird beetle, Propylea dissecta was examined using male and female beetles of varying ages (1-30 days) after a single mating stimulus.
Ahmad Pervez, Omkar, Aaron S. Richmond
doaj   +6 more sources

Slow and fast development in ladybirds: occurrence, effects and significance [PDF]

open access: yesWeb Ecology, 2012
Developmental and growth rates are known to vary in response to genetic, developmental, physiological and environmental factors. However, developmental variations that exist within a cohort under any constant rearing condition are not so well ...
G. Mishra, Omkar
doaj   +5 more sources

Ageing trajectory and longevity trade-off in an aphidophagous ladybird, Propylea dissecta (Coleoptera: Coccinellidae) [PDF]

open access: yesEuropean Journal of Entomology, 2006
The ageing trajectory (trend in ageing) and reproduction-longevity trade-off in both sexes of the ladybird Propylea dissecta were studied. The ageing trajectories of both sexes were investigated in terms of reproductive performance, using initial ...
Geetanjali MISHRA, OMKAR
doaj   +2 more sources

Mating alters the rate of development of ovarioles in the ladybird, Propylea dissecta (Coleoptera: Coccinellidae) [PDF]

open access: yesEuropean Journal of Entomology, 2016
The influence of female mating status on ovarian development of the ladybird, Propylea dissecta (Mulsant) (Coleoptera: Coccinellidae), was investigated under laboratory conditions.
Mhd SHAHID   +3 more
doaj   +2 more sources

Effects of different wavelengths of light on the life attributes of two aphidophagous ladybirds (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2005
The effect of different wavelengths of light, white (control; broad spectrum), blue (ca. 475 nm), yellow (ca. 570 nm) and red (ca. 650 nm), at constant intensity (195 ± 5 lux) on developmental time, reproductive and non-reproductive periods, fecundity ...
OMKAR, Geetanjali MISHRA, Kalpana SINGH
doaj   +1 more source

Kin recognition and avoidance of kin cannibalism by the larvae of co-occurring ladybirds: a laboratory study

open access: yesEuropean Journal of Entomology, 2005
The role of relatedness and diet in kin recognition was investigated in the aphidophagous ladybirds Propylea dissecta and Coccinella transversalis. Third instar larvae of both species exhibited kin recognition, as they were reluctant to consume related ...
Ahmad PERVEZ, Avanish K. GUPTA, OMKAR
doaj   +1 more source

Does experimental evolution produce better biological control agents? A critical review of the evidence

open access: yesEntomologia Experimentalis et Applicata, Volume 167, Issue 7, Page 584-597, July 2019., 2019
We review studies that used experimental evolution and/or artificial selection to improve native biocontrol agents and evaluated their success. Most studies focused on improving the performance of natural enemies in ecologically relevant environments, such as in the presence of pesticides or at different temperatures.
Manolis Lirakis, Sara Magalhães
wiley   +1 more source

Functional Responses of Nephus arcuatus Kapur (Coleoptera: Coccinellidae), the Most Important Predator of Spherical Mealybug Nipaecoccus viridis (Newstead)

open access: yesPsyche: A Journal of Entomology, Volume 2016, Issue 1, 2016., 2016
Nephus arcuatus Kapur is an important predator of Nipaecoccus viridis (Newstead), in citrus orchards of southwestern Iran. This study examined the feeding efficiency of all stages of N. arcuatus at different densities of N. viridis eggs by estimating their functional responses.
Sara Zarghami   +5 more
wiley   +1 more source

Effect of presence and semiochemicals of conspecific stages on oviposition by ladybirds (Coleoptera: Coccinellidae)

open access: yesEuropean Journal of Entomology, 2012
Reduced oviposition by ladybirds in the presence of tracks of fourth instar larvae owing to the presence of oviposition deterring pheromones is well established across many genera.
Geetanjali MISHRA   +3 more
doaj   +1 more source

Reproductive Biology, Mating Behavior, and Vibratory Communication of the Brown‐Winged Stink Bug, Edessa meditabunda (Fabr.) (Heteroptera: Pentatomidae)

open access: yesPsyche: A Journal of Entomology, Volume 2012, Issue 1, 2012., 2012
We describe different aspects of the reproductive biology, mating behavior, and vibratory communication of the pentatomid Edessa meditabunda (Fabr.). This species shows lower copulation frequency and reproductive potential with longer sexual maturation period compared to other species of pentatomids.
Cleonor Cavalcante A. Silva   +6 more
wiley   +1 more source

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