Prey range of the predatory ladybird Cryptolaemus montrouzieri

Maes, Sara; Grégoire, Jean; Clercq, Patrick De

doi:10.1007/s10526-014-9608-5

Cited by 18 publications

(15 citation statements)

References 31 publications

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“…When applying the relationship between LTime 50 at 5°C and field survival calculated by Hatherly et al (2005) to our dataset, it can be predicted that C. montrouzieri would not persist longer than 40 days in the field in western European winters and that the ladybird can be classified in the low risk category ). Thus, the data obtained suggest that C. montrouzieri is unlikely to permanently establish in the cooler temperate climate of western Europe and, together with its relatively narrow host range (Ś lipiński 2007;FinlayDoney and Walter 2012;Maes et al 2014b), is therefore expected to pose little risk to non-target species in this area.…”

Section: Food Sourcementioning

confidence: 90%

Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri

Maes

Grégoire²,

Clercq

2014

BioControl

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The effect of low temperature acclimation and diet on the supercooling point (SCP, the temperature at which the insect's body fluids freeze) and lethal time (LTime, time required to kill 50 % of the population at a temperature of 5°C) of the mealybug destroyer, Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae), was assessed in the laboratory. The SCP of acclimated adult ladybirds which were allowed to complete development to adulthood at 18°C and a 8:16(L:D)h photoperiod, or at 25°C and a 16:8(L:D)h photoperiod, and which were subsequently kept at 10°C and a 12:12(L:D)h photoperiod for seven days, was -17.4 and -16.8°C, respectively. These SCPvalues were approximately 7°C lower than the value of -9.9°C for non-acclimated ladybirds maintained at a temperature of 25°C and a photoperiod of 16:8(L:D)h throughout development and in the first week of their adult life. Also food source had a significant effect on the freezing temperature of C. montrouzieri: the SCP of ladybirds fed the citrus mealybug, Planococcus citri (Risso)(Hemiptera: Pseudococcidae), was 1.6°C higher than the value of -17.2°C observed for ladybirds provided with eggs of the flour moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae). However, neither cold acclimation nor diet had a significant effect on the lethal times of C. montrouzieri. Overall, the time required to kill 50 % of the population at a temperature of 5°C ranged from 12.8 days for ladybirds fed P. citri mealybugs to 14.4 days for ladybirds fed E. kuehniella eggs. All individuals exposed to a constant 5°C had died by day 24. Based on the results from this laboratory study, it is deemed unlikely that C. montrouzieri could establish outdoors in western Europe, and it is therefore expected to pose little risk to non-target species in this area when used as an augmentative biological control agent.

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Section: Food Sourcementioning

confidence: 90%

Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri

Maes

Grégoire²,

Clercq

2014

BioControl

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“…2k). Aphids Common prey [9] Whiteflies Observed in field [13] Psyllids Tested in lab [14] HA Coccids Observed in field [15] Aphids Common prey [3,9] Whiteflies Observed in gut content [16] Tested in lab [17] Psyllids Observed in field [18] Tested in lab [7] PJ Coccids Tested in lab [19] Aphids Common prey [9] Whiteflies Observed in gut content [16] Tested in lab [8,17] Psyllids Tested in lab [20] CM Coccids Common prey [3,9] Aphids Tested in lab [21,22] Whiteflies Tested in lab [22] Psyllids Tested in lab [23] Transcriptional regulation…”

Section: Life History Traitsmentioning

confidence: 99%

Changes in life history traits and transcriptional regulation of Coccinellini ladybirds in using alternative prey

et al. 2020

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Background: Ladybird beetles (Coleoptera, Coccinellidae) are highly diverse in their feeding habits. Most of them are specialist feeders, while some can have a broad spectrum of prey. As a representative group of generalists, the tribe Coccinellini includes many aphidophagous species, but members of this tribe also feed on other hemipterous insects including coccids, psyllids and whiteflies. As a result, several species are effective biological control agents or invasive species with serious non-target effects. Despite their economic importance, relatively little is known about how they adapt to new prey. Results: In this study, comparisons of the life history traits and transcriptomes of ladybirds fed initial (aphids) and alternative prey (mealybugs) were performed in three Coccinellini species. The use of alternative prey greatly decreased performance, implied by the significantly prolonged development time and decreased survival rate and adult weight. Prey shifts resulted in a set of differentially expressed genes encoding chemosensory proteins and digestive and detoxifying enzymes. Conclusions: Our results suggest that these generalists do not perform well when they use alternative prey as the sole nutrition source. Although their capacity for predation might have created an opportunity to use varied prey, they must adapt to physiological obstacles including chemosensing, digestion and detoxification in response to a prey shift. These findings challenge the effect of Coccinellini predators on the biological control of non-aphid pests and suggest the possibility of non-target attacks by so-called specialists.

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“…We also detected range expansion in introduced populations in southern China (mentioned by Li et al ). Furthermore, host range tests in a laboratory population revealed nontarget attack abilities (Maes, Grégoire, & De Clercq, ). These potential risks, including range expansion and nontarget attack by ladybird populations, might result from evolutionary changes that occurred during and after their introduction.…”

Section: Introductionmentioning

confidence: 99%

Genomic changes in the biological control agent Cryptolaemus montrouzieri associated with introduction

Heckel

Huang

et al. 2019

Evolutionary Applications

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Biological control is the main purpose of intentionally introducing non‐native invertebrate species. The evolutionary changes that occur in the populations of the introduced biological control agents may determine the agent's efficiency and the environmental safety. Here, to explore the pattern and extent of potential genomic changes in the worldwide introduced predatory ladybird beetle Cryptolaemus montrouzieri , we used a reduced‐representation sequencing method to analyze the genome‐wide differentiation of the samples from two native and five introduced locations. Our analyses based on a total of 53,032 single nucleotide polymorphism loci showed that beetles from the introduced locations in Asia and Europe exhibited significant reductions in genetic diversity and high differentiation compared with the samples from the native Australian range. Each introduced population belonged to a unique genetic cluster, while the beetles from two native locations were much more similar. These genomic patterns were also detected when the dataset was pruned for genomic outlier loci (52,318 SNPs remaining), suggesting that random genetic drift was the main force shaping the genetic diversity and population structure of this biological control agent. Our results provide a genome‐wide characterization of polymorphisms in a biological control agent and reveal genomic differences that were influenced by the introduction history. These differences might complicate assessments of the efficiency of biological control and the invasion potential of this species but also indicate the feasibility of selective breeding.

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Prey range of the predatory ladybird Cryptolaemus montrouzieri

Cited by 18 publications

References 31 publications

Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri

Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri

Changes in life history traits and transcriptional regulation of Coccinellini ladybirds in using alternative prey

Genomic changes in the biological control agent Cryptolaemus montrouzieri associated with introduction

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