Effect of prey quantity on reproductive and developmental attributes of a ladybird beetle, Anegleis cardoni

Omkar,; Sahu, Jyotsna; Kumar, Gyanendra

doi:10.1017/s1742758410000056

Cited by 20 publications

(13 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Futhermore, it has also been reported to prey on whiteflies (Ramani et al 2002) and scale insects (Sundararaj 2008). Although previous studies have focused on the influence of prey quality and quantity on A. cardoni (Afroze 2000; Omkar et al 2009; Omkar et al 2010; Omkar et al 2011), there is no information on prey-predator population dynamics, which is important in evaluating the performance of A. cardoni to a changing prey density and forecasting the suitability of the predator as a potential biocontrol agent. Therefore, this study was designed to investigate the functional and numerical responses of A. cardoni on its preferred aphid prey, A. gossypii under laboratory conditions.…”

Section: Introductionmentioning

confidence: 99%

Responses of an Aphidophagous Ladybird Beetle,AnegleisCardoni, to Varying Densities ofAphis gossypii

Omkar¹,

Kumar²

2013

Journal of Insect Science

Self Cite

View full text Add to dashboard Cite

Laboratory experiments were conducted to determine the functional and numerical responses of fourth instar larvae, adult male, and adult female ladybird beetles, Anegleis cardoni Weise (Coleoptera: Coccinellidae), to different densities of aphids, Aphis gossypii Glover (Hemiptera: Aphididae), on the bottle gourd, Lagenaria vulgaris Seringe (Cucurbitales: Cucurbitaceae). The results revealed a density dependent, Type II functional response of A. cardoni. Prey consumption increased curvilinearly with an increase in prey density for all three predatory stages. Numerical responses revealed significant increases in oviposition with increases in prey density. The food exploitation efficiency and the efficiency of conversion of ingested food decreased with increases in prey density. The attack rate was highest for adult females, followed by fourth instar larvae and adult males. Prey consumption was highest and handling time lowest in fourth instar larvae, followed by adult females and males. Therefore, fourth instar larvae of A. cardoni may be considered the most efficient predatory stage in aphid management strategies.

show abstract

Section: Introductionmentioning

confidence: 99%

Responses of an Aphidophagous Ladybird Beetle,AnegleisCardoni, to Varying Densities ofAphis gossypii

Omkar¹,

Kumar²

2013

Journal of Insect Science

Self Cite

View full text Add to dashboard Cite

show abstract

“…Although, there are no studies on the conversion efficiency and growth rate of predators kept in conspecific or heterospecific combinations there are numerous studies on single species provided with abundant prey, conditions under which they perform best in terms of growth, development and reproduction (Schuder et al, 2004;Omkar et al, 2010). The highest conversion efficiency but lowest growth rates recorded when provided with an extremely scarce supply of prey support the findings of Schuder et al (2004).…”

Section: Discussionmentioning

confidence: 68%

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

Kumar¹,

Mishra²,

Omkar³

2014

Eur. J. Entomol.

View full text Add to dashboard Cite

Abstract. In the present study, the predatory interactions between two locally abundant large lady beetles, Coccinella septempunctata L. (C7) and Coccinella transversalis F. (Ct) provided with either an extremely scarce, scarce, sub-optimal, optimal or abundant supply of the pea aphid, Acyrthosiphon pisum (Harris) were investigated. For this, three 2-predator combinations (conspecific C7 + C7 and Ct + Ct, and heterospecific C7 + Ct) of 10-day-old unmated adult females were used. The relationships between the proportion of prey consumed by the predators in the conspecific and heterospecific combinations when provided with five different abundances of prey were similar in consisting of a decelerating (type II) functional response when provided with an extremely scarce to optimal supply of prey, followed by an accelerating (type III) functional response when provided with an optimal to abundant supply of prey. It is likely that the modified type II functional response recorded in the present study was a consequence of using a small experimental arena (Petri dish). The multiplicative risk model analysis revealed that the predators interacted antagonistically except in the C7 + C7 combination provided with an extremely scarce supply of prey where the predators had an additive effect. The predators in the heterospecific C7 + Ct combination consumed fewer aphids when provided with an extremely scarce, scarce, sub-optimal or optimal supply of prey prey than the predators in conspecific C7 + C7 combination but a similarly high number when provided with an abundant supply of prey. In addition, the efficiency of converting prey biomass into their own biomass was higher in the heterospecific C7 + Ct than in the conspecific C7 + C7 or Ct + Ct combinations at all prey densities. Although the conversion efficiency of the predators in the conspecific and heterospecific combinations provided with an extremely scarce supply of prey was the highest recorded, their growth rate was the lowest. In contrast, both the conversion efficiency and growth rate of the predators in the three combinations were highest when provided with an abundant supply of prey. It may, therefore, be concluded that when the predators in the combinations occupy similar ecological niches, they will probably consume less prey than they require when prey is both scarce and abundant because the predators interact antagonistically.

show abstract

“…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%

“…(Iperti & Hodek, 1974;Hodek, 2012), Harmonia sedecimnotata (Fabr) (Zaslavski et al, 1998;Vaghina, 2004;Reznik & Vaghina, 2006), Hippodamia convergens Guérin (Michaud & Qureshi, 2005 and Harmonia axyridis (Pallas) (Evans & Gunther, 2005;Berkvens et al, 2008a;Reznik & Vaghina, 2013). Diet can also infl uence the rate of reproductive maturation and fecundity in many ladybirds (Ives, 1981;Wipperfürth et al, 1987;Evans, 2000;Omkar & Srivastava, 2003;Evans et al, 2004;Kajita & Evans, 2009;Sharmila et al, 2009;Omkar et al, 2010; To prepare a replicate of the experiment, a cohort of 1st instar larvae that hatched over a period of 24 h from eggs laid by 20-40 females of one of the two populations was placed in a large (12 l, 25 cm tall) glass cylinder (70-125 larvae per cylinder) and reared at a constant temperature of 20°C and day length of 18 h. Food (M. persicae on bean seedling) was provided daily. The adults that emerged were kept under the same conditions (60-95 beetles per cylinder) for 20-25 days.…”

Section: Introductionmentioning

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.

View full text Add to dashboard Cite

Effect of prey quantity on reproductive and developmental attributes of a ladybird beetle, Anegleis cardoni

Cited by 20 publications

References 47 publications

Responses of an Aphidophagous Ladybird Beetle,AnegleisCardoni, to Varying Densities ofAphis gossypii

Responses of an Aphidophagous Ladybird Beetle,AnegleisCardoni, to Varying Densities ofAphis gossypii

Functional response and predatory interactions in conspecific and heterospecific combinations of two congeneric species (Coleoptera: Coccinellidae)

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

Contact Info

Product

Resources

About