Qualitative and Quantitative Prey Requirements of two Aphidophagous Coccinellids,<i>Adalia tetraspilota</i>and<i>Hippodamia variegata</i>

Shah, Mohd Abas; Khan, Akhtar A.

doi:10.1673/031.014.72

Cited by 10 publications

(13 citation statements)

References 34 publications

(29 reference statements)

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“…not present in the aphid) that can contribute significantly to their fitness (e.g. Barry & Ohno, 2015;Brandt, Johnson, Losey, Catangui, & Hesler, 2015;Du, Ge, Zhu, & Parajulee, 2004;Kalushkov & Hodek, 2004;Omkar & James, 2004;Pervez & Omkar, 2004;Phoofolo & Obrycki, 1995;Shah & Khan, 2014). We did not observe an effect of leaf supplements on the weight of adult beetles at eclosion even when they were maintained continuously with foliage throughout their development; with the exception of C. septempuncatata, which weighed 5% more when provided leaves.…”

Section: Ta B L Ementioning

confidence: 49%

“…not present in the aphid) that can contribute significantly to their fitness (e.g. Barry & Ohno, 2015; Brandt, Johnson, Losey, Catangui, & Hesler, 2015; Du, Ge, Zhu, & Parajulee, 2004; Kalushkov & Hodek, 2004; Omkar & James, 2004; Pervez & Omkar, 2004; Phoofolo & Obrycki, 1995; Shah & Khan, 2014). This introduces a confounding factor on how this body of literature should be interpreted.…”

Section: Discussionmentioning

confidence: 99%

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Herbivory improves the fitness of predatory beetles

Ugine

Nagra

Grebenok

et al. 2020

Journal of Animal Ecology

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1. While many predatory arthropods consume non-prey foods from lower trophic levels, little is known about what drives the shift from predator to omnivore. Predatory lady beetles often consume non-prey foods like plant foliage and pollen. One species, Coccinella septempunctata, eats foliage to redress sterol deficits caused by eating sterol-deficient prey. Here we explore how omnivory benefits lady beetle fitness. 2. We reared seven species of lady beetles-from five genera distributed across the tribe Coccinellini-on pea aphids in the presence or absence of fava bean foliage; pea aphids have very low sterol content. Foliage supplements lengthened the development times of four species and decreased survival to adulthood of two species; it had no effect on adult mass. We mated beetles in a 2 × 2 factorial design (males with or without foliage paired with females with or without foliage). For each species, we observed a profound paternal effect of foliage supplements on fitness. Females mated to foliage-supplemented males laid more eggs and more viable eggs compared to females mated to non-supplemented males. Foliage-supplemented males produced 2.9-4.6 times more sperm compared to non-supplemented males for the three species we examined. 3. We analysed the sterol profile of four beetle species reared on pea aphids-with or without foliage-and compared their sterol profile to field-collected adults. For two laboratory-reared species, sterols were not detected in adult male beetles, and overall levels were generally low (total ng of sterol/beetle range: 3-33 ng); the exception being Propylea quatuordecimpunctata females (total ng of sterol/beetle range: 50-157 ng). Laboratory-reared lady beetle sterol content was not significantly affected by the presence of foliage. Field-collected beetles had higher levels of sterols compared to laboratory-reared beetles (2,452-145,348 ng per beetle); cholesterol and sitosterol were the dominant sterols in both field-collected and laboratory-reared beetles. 4. Our findings indicate that herbivory benefits lady beetle fitness across the Coccinellini, and that this was entirely a paternal effect. Our data provide a rare example of a nutritional constraint impacting fitness in a sex-specific manner. It also shows, more broadly, how a nutritional constraint can drive predators towards omnivory.

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Section: Ta B L Ementioning

confidence: 49%

“…not present in the aphid) that can contribute significantly to their fitness (e.g. Barry & Ohno, 2015; Brandt, Johnson, Losey, Catangui, & Hesler, 2015; Du, Ge, Zhu, & Parajulee, 2004; Kalushkov & Hodek, 2004; Omkar & James, 2004; Pervez & Omkar, 2004; Phoofolo & Obrycki, 1995; Shah & Khan, 2014). This introduces a confounding factor on how this body of literature should be interpreted.…”

Section: Discussionmentioning

confidence: 99%

Herbivory improves the fitness of predatory beetles

Ugine

Nagra

Grebenok

et al. 2020

Journal of Animal Ecology

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“…Evans et al, 2004;Evans & Gunther, 2005;Osawa, 2005;Sighinolfi et al, 2008;Kögel et al, 2012;Zhang et al, 2012). Quantitative studies have usually been on the correlation between the number of prey consumed and the rate of maturation or the number of eggs laid and thus near-zero diets have not been tested (Sharmila et al, 2009;Omkar et al, 2010;Shah & Khan, 2014). Nevertheless, the "low trophic threshold" of H. axyridis females was estimated by Agarwala & Bhowmik (2011) as ca 3 aphids per female (i.e.…”

Section: Discussionmentioning

confidence: 99%

Trophic induction of diapause in native and invasive populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Овчинникова¹,

Овчинников²,

Dolgovskaya³

et al. 2016

Eur. J. Entomol.

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“…The predacious coccinellids (Coleoptera: Coccinellidae) are well-known beneficial insects which are important voracious feeders of many pests of economic importance, like aphids, leaf hoppers, jassids, thrips, whiteflies, scale insects, mealybugs, mites, lepidopteran insects and other soft bodied insects in natural and agricultural habitats (Dixon, 2000;William, 2002;Silva et al, 2009;Khan et al, 2009;Shah & Khan, 2014).…”

Section: Introductionmentioning

confidence: 99%

Cannibalistic behavior of aphidophagous coccinellid, Hippodamia variegata (Goeze, 1777) (Coleoptera: Coccinellidae)

Khan¹,

Yoldaş²

2018

Turkish Journal of Entomology

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The variegated lady beetle, Hippodamia variegata (Goeze, 1777) is widely distributed in different agroecosystems of Turkey. Cannibalism, intraspecific predation, where individuals of the same species feed upon each other, is a common phenomenon in most aphidophagous coccinellids including H. variegata. We investigated the cannibalistic behavior of various growth stages of H. variegata in the presence and absence of Acyrthosiphon pisum Harris, 1776 under laboratory conditions. The results for cannibalism of eggs and larvae by adults revealed that eggs and younger larvae were more vulnerable to cannibalism. Notably, egg cannibalism by adults was found to be higher even at high prey abundance. Whereas, larval cannibalism was found significantly lower. Cannibalism of eggs by larvae and within the larvae showed that older larvae consumed significantly higher number of eggs and younger larvae in the absence of A. pisum indicating that cannibalism was mainly influenced by scarcity of prey. However, all the larval instars, especially 4 th and 3 rd instars, also consumed a substantial number of eggs even in the presence of prey. Cannibalism within the same stage/age larvae showed a successive increase with the successive larval stage showing minimum cannibalism by 1 st instar larvae and maximum by 4 th instar larvae. The study found that scarcity of prey leads to cannibalism in H. variegata and that egg cannibalism occurs even at high prey densities.

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Qualitative and Quantitative Prey Requirements of two Aphidophagous Coccinellids,Adalia tetraspilotaandHippodamia variegata

Cited by 10 publications

References 34 publications

Herbivory improves the fitness of predatory beetles

Herbivory improves the fitness of predatory beetles

Trophic induction of diapause in native and invasive populations of Harmonia axyridis (Coleoptera: Coccinellidae)

Cannibalistic behavior of aphidophagous coccinellid, Hippodamia variegata (Goeze, 1777) (Coleoptera: Coccinellidae)

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