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Alternative foods for the multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae)

Nick Berkvens, Carmen Landuyt (UGent) , Koen Deforce (UGent) , Dirk Berkvens (UGent) , Luc Tirry (UGent) and Patrick De Clercq (UGent)
(2010) EUROPEAN JOURNAL OF ENTOMOLOGY. 107(2). p.189-195
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Abstract
The multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae) may potentially exploit a range of "alternative" food sources. The nutritional value of three common non-prey food groups, i.e. fruit, fungi and pollen, is examined in this study. Development, reproduction and survival of the species were assessed in the laboratory on diets of apple, pear and raspberries and the fungi Oidium lycopersicum, Botrytis cinerea, Sclerotinia sclerotiorum and Rhizoctonia solani. When fed exclusively on these foods this ladybird failed to complete its development or reproduce. However, larval and adult survival was prolonged by 4 to 8 days and 55 to 67 days, respectively, when fruit was offered compared with only water. During a field study H. axyridis adults were collected monthly from March to October at two locations near Ghent, Belgium. Gut analysis demonstrated that, despite the continued presence of aphids, over 90% of all the adults collected contained pollen throughout the year. The pollen belonged to 53 different pollen types. Monthly average numbers of pollen grains in the gut varied from 5 to 233 grains. In contrast, there were about 35,000 grains in the guts of H. axyridis females that successfully developed and reproduced in the laboratory on diet that consisted of only pollen. This suggests that in the field in the majority of cases pollinivory mainly only provided complementary nutrients for this coccinellid. The use of alternative non-prey foods like pollen and fruit may play a role in sustaining populations of this coccinellid at times when the optimal prey is absent.
Keywords
Coccinellidae, PALLAS COLEOPTERA, Harmonia axyridis, invasive species, development, frugivory, pollinivory, SEPTEMPUNCTATA COLEOPTERA, fungivory, reproduction, SYRPHIDAE, PREFERENCES, INVASION, ADULTS, PHENOLOGY, DIPTERA, POLLEN, ESTABLISHMENT

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Citation

Please use this url to cite or link to this publication:

Chicago
Berkvens, Nick, Carmen Landuyt, Koen Deforce, Dirk Berkvens, Luc Tirry, and Patrick De Clercq. 2010. “Alternative Foods for the Multicoloured Asian Lady Beetle Harmonia Axyridis (Coleoptera: Coccinellidae).” European Journal of Entomology 107 (2): 189–195.
APA
Berkvens, N., Landuyt, C., Deforce, K., Berkvens, D., Tirry, L., & De Clercq, P. (2010). Alternative foods for the multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae). EUROPEAN JOURNAL OF ENTOMOLOGY, 107(2), 189–195.
Vancouver
1.
Berkvens N, Landuyt C, Deforce K, Berkvens D, Tirry L, De Clercq P. Alternative foods for the multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae). EUROPEAN JOURNAL OF ENTOMOLOGY. 2010;107(2):189–95.
MLA
Berkvens, Nick, Carmen Landuyt, Koen Deforce, et al. “Alternative Foods for the Multicoloured Asian Lady Beetle Harmonia Axyridis (Coleoptera: Coccinellidae).” EUROPEAN JOURNAL OF ENTOMOLOGY 107.2 (2010): 189–195. Print.
@article{984941,
  abstract     = {The multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae) may potentially exploit a range of {\textacutedbl}alternative{\textacutedbl} food sources. The nutritional value of three common non-prey food groups, i.e. fruit, fungi and pollen, is examined in this study. Development, reproduction and survival of the species were assessed in the laboratory on diets of apple, pear and raspberries and the fungi Oidium lycopersicum, Botrytis cinerea, Sclerotinia sclerotiorum and Rhizoctonia solani. When fed exclusively on these foods this ladybird failed to complete its development or reproduce. However, larval and adult survival was prolonged by 4 to 8 days and 55 to 67 days, respectively, when fruit was offered compared with only water. During a field study H. axyridis adults were collected monthly from March to October at two locations near Ghent, Belgium. Gut analysis demonstrated that, despite the continued presence of aphids, over 90\% of all the adults collected contained pollen throughout the year. The pollen belonged to 53 different pollen types. Monthly average numbers of pollen grains in the gut varied from 5 to 233 grains. In contrast, there were about 35,000 grains in the guts of H. axyridis females that successfully developed and reproduced in the laboratory on diet that consisted of only pollen. This suggests that in the field in the majority of cases pollinivory mainly only provided complementary nutrients for this coccinellid. The use of alternative non-prey foods like pollen and fruit may play a role in sustaining populations of this coccinellid at times when the optimal prey is absent.},
  author       = {Berkvens, Nick and Landuyt, Carmen and Deforce, Koen and Berkvens, Dirk and Tirry, Luc and De Clercq, Patrick},
  issn         = {1210-5759},
  journal      = {EUROPEAN JOURNAL OF ENTOMOLOGY},
  language     = {eng},
  number       = {2},
  pages        = {189--195},
  title        = {Alternative foods for the multicoloured Asian lady beetle Harmonia axyridis (Coleoptera: Coccinellidae)},
  url          = {http://www.eje.cz/scripts/viewabstract.php?abstract=1527},
  volume       = {107},
  year         = {2010},
}

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