Arthropod Demography, Distribution, and Dispersion in a Novel Trap-Cropped Cotton Agroecosystem.
J Insect Sci
; 21(1)2021 Jan 01.
Article
in En
| MEDLINE
| ID: mdl-33638986
ABSTRACT
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.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Spiders
/
Insect Control
/
Vernonia
/
Animal Distribution
/
Life History Traits
/
Insecta
Limits:
Animals
Country/Region as subject:
America do norte
Language:
En
Journal:
J Insect Sci
Journal subject:
BIOLOGIA
Year:
2021
Document type:
Article
Affiliation country:
United States