Effects of three mealybug species on the development, survivorship and reproduction of the predatory lady beetle<i>Cryptolaemus montrouzieri</i>Mulsant

Qin, Zhou; Qiu, Bao‐Li; Wu, Jing; Cuthbertson, Andrew G. S.; Ren, Sumei

doi:10.1080/09583157.2014.903225

Cited by 7 publications

(3 citation statements)

References 7 publications

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“…It has been the general observation in previous research studies that feeding of adult predators including coccinellids showed an increasing trend and reach peak, corresponding the mating and oviposition of females. Moreover, significant effect of prey densities has also been identified on the feeding of coccinellids as comparatively higher consumption is observed in lower prey densities than higher densities, mainly because of searching, handling and consumption of prey is comparatively easy at lower densities (Agarwala et al, 2001;Omkar and Srivastava, 2003;Rana, 2006;Qin et al, 2014;Saleem et al, 2014).…”

Section: Resultsmentioning

confidence: 99%

Feeding Potential of Adult Menochilus sexmaculata and Coccinella septempunctata on Passionvine Mealybug, Planococcus minor Eggs and Nymphs

Mastoi¹,

Riaz²,

Haider³

et al. 2019

PJAR

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P lanococcus minor (Maskell) (Hemiptera: Pseudococcidae), commonly known as passionvine mealybug, is a polyphagous pest that can potentially damage many tropical and subtropical plants (CAB, 2003;Venette and Davis, 2004). Although, this species is widely distributed in many South-Asian countries, but, it has cause serious damages in India and Taiwan (Reddy et al., 1997;Tandon and Verghese, 1987;Ho et al., 2007). Planococcus minor is a highly polyphagous pest that attack more than 250 plant species from 80 families (Bastos et al., 2007). Cit-rus, banana, cocoa corn, coffee, mango, grape, potato, and soybean are some of the important hosts of this mealybug (Ben-Dov, 1994, Venette andDavis, 2004). Besides, it also possesses highly invasive characteristics; free spread along with shipping goods particularly fruits (Venette and Davis, 2004), comparatively short life cycle (Martinez and Suris, 1998) and a high reproductive potential (Maity et al., 1998).Mealybug infestation may occur within vegetative shoots or apexes and can be extremely difficult to detect. Basically, P. minor is phloem feeder that cause stunting growth of the plants along with defoliation Abstract | Passionvine mealybug, Planococcus minor has caused severe losses to many important crops and vegetables. However, many natural enemies, particularly predators have demonstrated key influence on its population regulation. Thus, this laboratory study was conducted to evaluate feeding potential of two coccinellid predators i.e., Menochilous sexmaculata and Coccinella septempunctata on eggs and nymphs of P. minor. Results confirmed that both species of coccinellid showed feeding potential against eggs and nymphs of P. minor. Comparatively, M. sexmaculata showed higher feeding than C. septempunctata on various immature stages of M. minor. Moreover, both the species showed relatively more preference on eggs of P. minor than nymphs. Therefore, both the species can be exploited in field conditions against P. minor to keep its populations below threshold level.

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Section: Resultsmentioning

confidence: 99%

Feeding Potential of Adult Menochilus sexmaculata and Coccinella septempunctata on Passionvine Mealybug, Planococcus minor Eggs and Nymphs

Mastoi¹,

Riaz²,

Haider³

et al. 2019

PJAR

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“…In China, C. montrouzieri is used as an effective natural enemy of mealybugs [3,26,27]. It has also been demonstrated that C. montrouzieri can complete its development (the development period of egg to adult is 29.3 ± 1.19 days) and reproduce (38.9 ± 4.43 eggs) when feeding on D. neobrevipes , and its finite rate of increase is 0.0546 [28].…”

Section: Discussionmentioning

confidence: 99%

The Impact of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) on Control of Dysmicoccus neobrevipes Beardsley (Hemiptera: Pseudococcidae)

Qin

Qiu

et al. 2019

Insects

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Cryptolaemus montrouzieri (Coleoptera: Coccinellidae) is an important predator of the mealybug Dysmicoccus neobrevipes (Hemiptera: Pseudococcidae), a major pest of Agave sisalana in China. Limited reports on the efficacy of C. montrouzieri against D. neobrevipes are available. This study reports the predatory efficacy and functional response of C. montrouzieri against D. neobrevipes under laboratory conditions. The prey consumption rate per day of 4th instar larvae of C. montrouzieri feeding on 1st instar D. neobrevipes nymphs (241.3 mealybugs) was the highest among the different larval life stages of the beetle. For C. montrouzieri, the prey consumption per day of adult females (19.8 mealybugs) was significantly higher compared to males (15.2 mealybugs) when feeding on 3rd instar D. neobrevipes nymphs. The functional responses of C. montrouzieri on 1st and 2nd instar D. neobrevipes nymphs were determined as Holling type II. The search rates of C. montrouzieri 4th instar larvae towards the 1st and 2nd instar nymphs of D. neobrevipes were higher than those of the other beetle life stages. In addition, the handling times of 4th instar larvae were shorter than those of the other beetle life stages. The results from this study indicate that C. montrouzieri can be used as a predator of D. neobrevipes and, therefore, it should be evaluated further for use as a biocontrol agent in D. neobrevipes management programs.

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“…It can feed on quite a broad range of mealybug species ( Kairo et al, 2013 ). And no significant change in developmental traits was observed in the use of different mealybug species ( Qin et al, 2014 ). However, it can also feed on aphids, whiteflies and the eggs of moths or other ladybirds under laboratory conditions ( Maes et al, 2014 ), suggesting potential non-target effects in its field use.…”

Section: Introductionmentioning

confidence: 97%

Physiological and Evolutionary Changes in a Biological Control Agent During Prey Shifts Over Several Generations

et al. 2018

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Biological control agents usually suffer from a shortage of target prey or hosts in their post-release stage. Some predatory agents turn to attacking other prey organisms, which may induce physiological and evolutionary changes. In this study, we investigated life history traits, gene expression and genotype frequency in the predatory ladybird beetle Cryptolaemus montrouzieri during experimental prey shifts. C. montrouzieri were either continuously fed on aphids Megoura japonica as an alternative prey for four generations or were shifted back to the initial prey mealybugs Planococcus citri in each generation. In general, the utilization of aphids resulted in reduced performance and severe physiological adjustments, indicated by significant changes in development and fecundity traits and a large number of differentially expressed genes between the two offering setup prey treatments. Within the aphid-fed lines, performance regarding the developmental time, the adult weight and the survival rate recovered to some level in subsequent generations, possibly as a result of adaptive evolution. In particular, we found that a shift back to mealybugs caused a gradual increase in fecundity. Accordingly, a genotype of the fecundity-related gene vitellogenin, of which there were several minor alleles in the initial population, became the main genotype within four generations. The present study explored the short-term experimental evolution of a so-call specialist predator under prey shift conditions. This potential rapid adaptation of biological control agents to novel prey will increase environmental risks associated with non-target effects.

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Effects of three mealybug species on the development, survivorship and reproduction of the predatory lady beetleCryptolaemus montrouzieriMulsant

Cited by 7 publications

References 7 publications

Feeding Potential of Adult Menochilus sexmaculata and Coccinella septempunctata on Passionvine Mealybug, Planococcus minor Eggs and Nymphs

Feeding Potential of Adult Menochilus sexmaculata and Coccinella septempunctata on Passionvine Mealybug, Planococcus minor Eggs and Nymphs

The Impact of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) on Control of Dysmicoccus neobrevipes Beardsley (Hemiptera: Pseudococcidae)

Physiological and Evolutionary Changes in a Biological Control Agent During Prey Shifts Over Several Generations

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