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Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri

Sara Maes, Jean-Claude Grégoire and Patrick De Clercq UGent (2015) BIOCONTROL. 60(2). p.199-207
abstract
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 A degrees 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 A degrees C and a 8:16(L:D)h photoperiod, or at 25 A degrees C and a 16:8(L:D)h photoperiod, and which were subsequently kept at 10 A degrees C and a 12:12(L:D)h photoperiod for seven days, was -17.4 and -16.8 A degrees C, respectively. These SCP-values were approximately 7 A degrees C lower than the value of -9.9 A degrees C for non-acclimated ladybirds maintained at a temperature of 25 A degrees 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 A degrees C higher than the value of -17.2 A degrees 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 A degrees 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 A degrees 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.
Please use this url to cite or link to this publication:
author
organization
year
type
journalArticle (original)
publication status
published
subject
keyword
Environmental risk assessment, Biological control, Cold tolerance, Non-native species, Predator, Coleoptera, Coccinellidae, BIOLOGICAL-CONTROL AGENTS, NATURAL ENEMIES, COCCINELLIDAE, TEMPERATURE, COLEOPTERA, INSECTS, UK, ARTHROPODS, MULSANT, DIET
journal title
BIOCONTROL
Biocontrol
volume
60
issue
2
pages
199 - 207
Web of Science type
Article
Web of Science id
000351531400006
JCR category
ENTOMOLOGY
JCR impact factor
1.767 (2015)
JCR rank
20/94 (2015)
JCR quartile
1 (2015)
ISSN
1386-6141
DOI
10.1007/s10526-014-9630-7
language
English
UGent publication?
yes
classification
A1
copyright statement
I have transferred the copyright for this publication to the publisher
id
5986132
handle
http://hdl.handle.net/1854/LU-5986132
date created
2015-06-08 15:10:45
date last changed
2016-12-19 15:38:44
@article{5986132,
  abstract     = {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 A degrees 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 A degrees C and a 8:16(L:D)h photoperiod, or at 25 A degrees C and a 16:8(L:D)h photoperiod, and which were subsequently kept at 10 A degrees C and a 12:12(L:D)h photoperiod for seven days, was -17.4 and -16.8 A degrees C, respectively. These SCP-values were approximately 7 A degrees C lower than the value of -9.9 A degrees C for non-acclimated ladybirds maintained at a temperature of 25 A degrees 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 A degrees C higher than the value of -17.2 A degrees 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 A degrees 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 A degrees 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.},
  author       = {Maes, Sara and Gr{\'e}goire, Jean-Claude and De Clercq, Patrick},
  issn         = {1386-6141},
  journal      = {BIOCONTROL},
  keyword      = {Environmental risk assessment,Biological control,Cold tolerance,Non-native species,Predator,Coleoptera,Coccinellidae,BIOLOGICAL-CONTROL AGENTS,NATURAL ENEMIES,COCCINELLIDAE,TEMPERATURE,COLEOPTERA,INSECTS,UK,ARTHROPODS,MULSANT,DIET},
  language     = {eng},
  number       = {2},
  pages        = {199--207},
  title        = {Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri},
  url          = {http://dx.doi.org/10.1007/s10526-014-9630-7},
  volume       = {60},
  year         = {2015},
}

Chicago
Maes, Sara, Jean-Claude Grégoire, and Patrick De Clercq. 2015. “Cold Tolerance of the Predatory Ladybird Cryptolaemus Montrouzieri.” Biocontrol 60 (2): 199–207.
APA
Maes, Sara, Grégoire, J.-C., & De Clercq, P. (2015). Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri. BIOCONTROL, 60(2), 199–207.
Vancouver
1.
Maes S, Grégoire J-C, De Clercq P. Cold tolerance of the predatory ladybird Cryptolaemus montrouzieri. BIOCONTROL. 2015;60(2):199–207.
MLA
Maes, Sara, Jean-Claude Grégoire, and Patrick De Clercq. “Cold Tolerance of the Predatory Ladybird Cryptolaemus Montrouzieri.” BIOCONTROL 60.2 (2015): 199–207. Print.