Resource partitioning in a ladybird,<i>Menochilus sexmaculatus</i>: function of body size and prey density

Chaudhary, Desh Deepak; Kumar, Bhupendra; Mishra, Geetanjali; Omkar,

doi:10.1017/s0007485314000844

Cited by 11 publications

(7 citation statements)

References 36 publications

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“…Similarly, Kӧhler et al (1987) reported higher conversion efficiencies for the nymphs of central European grasshoppers than the adults. However, in comparison to fourth instars, the higher consumption rates of adult females may be ascribed to their high energy requirements for gonadal development and sexual maturity, since quantity of food influences the rates of development, reproductive output, and the fitness (Barros-Bellanda and Zucoloto 2002; Karsai and Hunt 2002;Moreau et al 2006;Chaudhary et al 2015;Keshavarz et al 2015;Rakhshan and Ahmad 2015).…”

Section: Discussionmentioning

confidence: 99%

“…Although the predation attributes of coccinellids on aphid prey have been assessed earlier; but these have been under constant trophic resources (Mishra et al 2011(Mishra et al , 2012Kumar et al 2013Kumar et al , 2014aBista and Omkar 2014;Keshavarz et al 2015;Rakhshan and Ahmad 2015). Also, the predatory responses of coccinellids to varying, usually increasing prey densities, have been assessed using functional and/or numerical response experimental designs (Kumar et al 2014b;Behnazar and Madadi 2015;Chaudhary et al 2015;Siddiqui et al 2015). However, the effect of resource fluctuation on predation aspects (consumption rate, conversion efficiency, and growth rate), is underinvestigated.…”

Section: Introductionmentioning

confidence: 99%

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Effects of prey resource fluctuation on predation attributes of two sympatric Coccinellidae (Coleoptera)

et al. 2015

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Under natural conditions, prey resources may fluctuate considerably in space and time; and predators are continuously faced with challenges of resource availability and use. In this study, effects of fluctuations (scarce/optimal/abundant) in biomass of pea aphid (Acyrthosiphon pisum (Harris); Hemiptera: Aphididae) during rearing and experimental conditions on certain predatory attributes (consumption rate/conversion, efficiency/growth rate) of two sympatric aphidophagous Coccinellidae (Coleoptera) were evaluated. Results revealed significant influence of rearing conditions on conversion efficiency and growth rate; and experimental conditions on all three predation attributes of Menochilus sexmaculatus (Fabricius) (Coleoptera: Coccinellidae). Larvae/adults of M. sexmaculatus had similar consumption rates per rearing condition, but exhibited highest and lowest consumption rates when abruptly shifted to abundant and scarce prey experimental conditions. Further, scarce prey reared larvae/adults of M. sexmaculatus displayed highest conversion efficiency and growth rate on optimal/abundant prey experimental condition(s). However, all three predation attributes of larvae/adults of Propylea dissecta (Mulsant) (Coleoptera: Coccinellidae) were influenced substantially by both the rearing and experimental conditions; and scarce prey reared larvae/adults exhibited highest predation attributes on optimal/abundant prey experimental condition(s). Moreover, predation attributes of M. sexmaculatus were higher than P. dissecta on the three experimental conditions. Therefore, this study suggests that M. sexmaculatus has a better compensatory ability to overcome prey resource fluctuation than P. dissecta.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of prey resource fluctuation on predation attributes of two sympatric Coccinellidae (Coleoptera)

et al. 2015

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“…Some factors may contribute to the performance of aphidophagous insects when feeding on their prey, i.e. optimum foraging behavior by larvae, degree of voraciousness of larvae, the availability of prey (prey density), and larval stage of predator as also shown in other studies by Ofuya (1986) and Chaudary et al (2015) on coccinellid, and Putra and Yasuda (2006) on predatory syrphid. In this study, larvae of M. sexmaculatus tends to be more voracious than I. scutellaris at the 1 st instar larva, although a contrary result was shown at the 3 rd instar.…”

Section: Developmental Time Of Larval Stagementioning

confidence: 60%

“…In addition, the female of coccinellid shows resource partitioning in terms of body size and density of prey. Chaudary et al (2015) revealed that small and big female of M. sexmaculatus tended to prey on small and big instars of aphids, respectively.…”

Section: Introductionmentioning

confidence: 98%

Comparison of Feeding Ability between Ischiodon scutellaris (Diptera: Syrphidae) and Menochilus sexmaculatus (Coleoptera: Coccinellidae) on Aphis craccivora (Hemiptera: Aphididae)

Rizal

Putra

Suputa

2018

JPTI

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Study on the feeding ability of two predators of Aphis craccivora (Koch), i.e. larvae of syrphid fly, Ischiodon scutellaris and coccinellid beetle, Menochilus sexmaculatus has been done in the laboratory. The study was conducted to determine the impacts of prey densities on larval development time, and the survival rate of larval stage. The results showed that M. sexmaculatus larvae required more prey than I. scutellaris in the 1st instar, but I. scutellaris ate more prey than M. sexmaculatus in the 3rd instar. Furthermore, addition of prey number shortened significanly the development time of the larvae stage, almost all of 1st and 3rd instars M. sexmaculatus and I. scutellaris were able to develop into pupae, whereas, only 45% out of total 1st instar provided with 20 prey individuals succeed to pupate. The impact of the number of prey on the biology of aphidophaga in relation to their role as controlling aphid in nature is discussed in this paper. IntisariKajian tentang kemampuan makan dua predator Aphis craccivora (Koch), yaitu larva lalat syrphid, Ischiodon scutellaris dan kumbang koksi, Menochilus sexmaculatus telah dilakukan di laboratorium. Kajian juga dilakukan untuk memahami dampak jumlah mangsa pada lama perkembangan larva menjadi pupa dan keloloshidupan larva menjadi pupa. Hasil kajian menunjukkan bahwa larva M. sexmaculatus membutuhkan lebih banyak mangsa daripada I. scutellaris pada instar 1, namun I. scutellaris makan lebih banyak mangsa daripada M. sexmaculatus pada instar 3. Hasil penelitian juga menunjukkan bahwa penambahan mangsa mempercepat waktu perkembangan larva secara signifikan. Semua larva instar 1 dan 3 M. sexmaculatus dan I. scutellaris mampu lolos menjadi pupa, kecuali larva instar 1 M. sexmaculatus yang hanya mampu lolos menjadi pupa sebanyak 45% jika diberi mangsa 20 ekor. Dampak jumlah mangsa pada biologi afidofaga dalam kaitannya dengan peran mereka sebagai pengendali populasi kutu afid di alam dibahas dalam tulisan ini.

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“…Based on the optimisation experiment, the scarce, optimal, and abundant prey biomasses were 2, 10, and 15 mg of aphids per individual beetle per day, respectively. However, the "extremely scarce" and "suboptimal" prey biomasses were found to be 1 and 5 mg of aphids per individual beetle per day, respectively (see Chaudhary et al 2015).…”

Section: Prey Optimisationmentioning

confidence: 98%

Functional response in coccinellid beetles (Coleoptera: Coccinellidae) is modified by prey-density experience

et al. 2022

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In the present study, we assessed functional response curves of two generalist coccinellid beetles (Coleoptera: Coccinellidae), specifically Menochilus sexmaculatus and Propylea dissecta, using fluctuating densities of aphid prey as a stimulus. In what may be the first such study, we investigated how the prey density experienced during the early larval development of these two predatory beetle species shaped the functional response curves of the late instar–larval and adult stages. The predators were switched from their rearing prey-density environments of scarce, optimal, or abundant prey to five testing density environments of extremely scarce, scarce, suboptimal, optimal, or abundant prey. The individuals of M. sexmaculatus that were reared on either scarce- and optimal- or abundant-prey densities exhibited type II functional response curves as both larvae and adults. However, individuals of P. dissecta that were reared on scarce- and abundant-prey densities displayed modified type II functional response curves as larvae and type II functional response curves as adults. In contrast, individuals of P. dissecta reared on the optimal-prey density displayed type II functional response curves as larvae and modified type II functional response curves as adults. The fourth-instar larvae and adult females of M. sexmaculatus and P. dissecta also exhibited highest prey consumption (T/Th) and shortest prey-handling time (Th) on the scarce-prey rearing density. Thus, under fluctuating-prey conditions, M. sexmaculatus is a better biological control agent of aphids than P. dissecta is.

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Resource partitioning in a ladybird,Menochilus sexmaculatus: function of body size and prey density

Cited by 11 publications

References 36 publications

Effects of prey resource fluctuation on predation attributes of two sympatric Coccinellidae (Coleoptera)

Effects of prey resource fluctuation on predation attributes of two sympatric Coccinellidae (Coleoptera)

Comparison of Feeding Ability between Ischiodon scutellaris (Diptera: Syrphidae) and Menochilus sexmaculatus (Coleoptera: Coccinellidae) on Aphis craccivora (Hemiptera: Aphididae)

Functional response in coccinellid beetles (Coleoptera: Coccinellidae) is modified by prey-density experience

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