Intraspecific and interspecific comparison of toxicity of ladybirds (Coleoptera: Coccinellidae) with contrasting colouration

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F24%3A00603951" target="_blank" >RIV/60077344:_____/24:00603951 - isvavai.cz</a>
Alternative codes found
RIV/60076658:12310/24:43907998
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0944200624000035/pdfft?md5=3e80e924d8db2918ce2863bf59677208&pid=1-s2.0-S0944200624000035-main.pdf" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0944200624000035/pdfft?md5=3e80e924d8db2918ce2863bf59677208&pid=1-s2.0-S0944200624000035-main.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.zool.2024.126144" target="_blank" >10.1016/j.zool.2024.126144</a>

Result language
angličtina
Original language name
Intraspecific and interspecific comparison of toxicity of ladybirds (Coleoptera: Coccinellidae) with contrasting colouration
Original language description
Ladybirds (Coccinellidae) use toxic compounds, mostly alkaloids in their haemolymph, for defence against predators and other enemies. The toxicity of ladybirds to predators cannot be directly assessed because predators show avoidance reactions without ingesting the beetles. The alkaloid of ladybird Harmonia axyridis showed wide range toxicity to diverse non-target organisms. Thus, we used a quick, inexpensive and easy-to-perform method using bioassays on water flea Daphnia magna for comparative quantification of the toxicity (LD50) of whole body extracts from several species of ladybirds that differ in their warning colouration. Alien invasive aposematic polymorphic ladybird H. axyridis was more toxic than all the other species examined: aposematic Adalia bipunctata > cryptic Cynegetis impunctata > aposematic Coccinella septempunctata > slightly aposematic Calvia quatuordecimguttata. Three month old adults of H. axyridis were 3.8 times more toxic than two week and one month old adults. The two most common colour morphs (non-melanic novemdecimsignata and melanic spectabilis) did not differ in their toxicity. High toxicity of H. axyridis as compared to all other species examined may contribute to the invasiveness of this species.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10616 - Entomology

Project
<a href="/en/project/GA20-10003S" target="_blank" >GA20-10003S: How ladybirds got their spots: Genetics and ecology of colouration of Coccinellidae</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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