Comparative Prey Predation Ability of Big-Eyed Bug Geocoris Ochropterus (Fieber) (Hemiptera: Geocoridae)

Nguyen Ngoc  Bao Chau; Nguyen Thi Phung Kieu

doi:10.59796/jcst.V13N3.2023.1307

Authors

Nguyen Ngoc Bao Chau Department of Plant Protection, Faculty of Agronomy, Nong Lam University, Vietnam
Nguyen Thi Phung Kieu Department of Agricultural Biotechnology, Faculty of Biotechnology, Ho Chi Minh City Open University, Vietnam

DOI:

https://doi.org/10.59796/jcst.V13N3.2023.1307

Keywords:

aphids, big-eyed bugs, Geocoris ochropterus, thrips, whiteflies, predation ability, prey

Abstract

We investigated the predation ability of big-eyed bugs Geocoris ochropterus on different single prey species of thrips, whiteflies, and aphids. Results indicated that G. ochropterus adults consumed the highest number of aphids per day (33.6 ± 3.35). First instar nymphs of G. ochropterus showed low ability to consume prey, while from second to fifth instar nymphs showed high ability to consume prey with significant differences. The number of eggs deposited per female fed on whiteflies was significantly different larger than other prey types. In addition, development time of Geocoris ochropterus nymphs first to fourth instar was longest when fed on aphids and significantly different among prey types. Results suggest that G. ochropterus consumed the highest numbers of aphids, with the order of preference aphids > whiteflies > thrips.

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