Impact of insect growth regulators on biology and behavior of Chrysoperla carnea (Stephens) (Neuroptera: Chrysopidae)
| Autor: | Mubasshir Sohail, Bhai Khan Solangi, Muhammad Usman Asif, Qadeer Ahmed Soomro, Raza Muhammad, Syed Saboor Khan |
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| Rok vydání: | 2019 |
| Předmět: |
0106 biological sciences
Insecticides animal structures Insecta Health Toxicology and Mutagenesis Population 010501 environmental sciences Management Monitoring Policy and Law Toxicology 01 natural sciences chemistry.chemical_compound Animals education Lufenuron Chrysoperla carnea 0105 earth and related environmental sciences Ovum education.field_of_study Larva biology fungi Pupa General Medicine biology.organism_classification Fecundity Juvenile Hormones 010602 entomology Diflubenzuron chemistry Pyriproxyfen Chrysopidae |
| Zdroj: | Ecotoxicology (London, England). 28(9) |
| ISSN: | 1573-3017 |
| Popis: | This study investigated the effects of four insect growth regulators (IGRs) on biology and behavior of Chrysoperla carnea. IGRs were sprayed on eggs, larvae (~24-h old), and pupae at recommended doses along with their relatively low and high dose. Eggs, larval, and pupal survival were assessed along with effects on fecundity and fertility of C. carnea adults emerged when pupae were treated. IOBC (International Organization for Biological and Integrated Control) proposed toxicity scale was used to categorize the IGRs. Concerning the eggs lufenuron, pyriproxyfen, and diflubenzuron were categorized as slightly harmful (class 2), whereas buprofezin was categorized as moderately harmful (class 3). Lufenuron and diflubenzuron were classified as slightly harmful (class 2) to C. carnea larvae, while pyriproxyfen and buprofezin were categorized as harmless (class 1). Buprofezin did not affect the locomotion behavior of the larvae as time proportion spent in the treated and untreated zone was equal, while all others were affected significantly. Regarding the pupae, pyriproxyfen and buprofezin were found slightly harmful (class 2) and moderately harmful (class 3), respectively, and considerably reduced fecundity and fertility of the C. carnea adults. Lufenuron and diflubenzuron did not affect significantly when pupae were treated. Based on combined effect, the IGRs lufenuron and diflubenzuron did nott influence the significantly on population parameters comparatively. This could be helpful for the use of IGRs in integration with C. carnea towards their conservation in agroecosystem. |
| Databáze: | OpenAIRE |
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