Arthropod Demography, Distribution, and Dispersion in a Novel Trap-Cropped Cotton Agroecosystem
In: Journal of Insect Science, Jg. 21 (2021)
Online
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Zugriff:
Vernonia [Vernonia galamensis (Cass.) Less.] (Asterales: Asteraceae) was examined as a potential trap crop for the cotton (Gossypium hirsutum L., Malvales: Malvaceae) arthropod complex. Four rows of vernonia were embedded within a 96-row cotton field. The abundance of true bug pests, true bug predators, and spiders were determined by whole-plant and sweep net sampling procedures during the early, middle, and late phases of the cotton-growing season. The census data showed that the arthropods had a strong preference for the vernonia trap crop throughout the cotton-growing season. The movement of the arthropods from the trap crop into cotton was also measured using the protein immunomarking technique as a mark–capture procedure. The arthropods inhabiting the vernonia trap crop were marked directly in the field with a broadcast spray application of egg albumin (protein) during each phase of the study. In turn, the captured specimens were examined for the presence of the mark by an egg albumin-specific enzyme-linked immunosorbent assay. Very few marked specimens were captured beyond the vernonia trap crop 1, 3, and 6 d after each marking event. The arthropods’ strong attraction and fidelity to vernonia indicate that it could serve as a trap crop for cotton pests and a refuge for natural enemies.
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Arthropod Demography, Distribution, and Dispersion in a Novel Trap-Cropped Cotton Agroecosystem
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Autor/in / Beteiligte Person: | Hagler, James R. ; Thompson, Alison L. ; Miles T Casey ; Machtley, Scott A. |
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Zeitschrift: | Journal of Insect Science, Jg. 21 (2021) |
Veröffentlichung: | Oxford University Press (OUP), 2021 |
Medientyp: | unknown |
ISSN: | 1536-2442 (print) |
DOI: | 10.1093/jisesa/ieab010 |
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