Sphaerodema urinator duforas (Hemiptera: Belostomatidae) as a predator of fasciola intermediate host, lymnaea natalensis krauss

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Younes A.A.; Hanaa E.-S.; Fathia G.; Marwa M.

Journal: Egyptian Journal of Biological Pest Control

Publisher: Egyptian Society for Biological Control of Pests

Publication Date: 2016

Volume / Issue: Volume 26 / Issue 2

Pages: 191–196

ISSN: 11101768

Scopus: View on Scopus

Document Type: Article

Authors and Affiliations

Younes A.A., Department of Entomology, Faculty of Science, Cairo University, Giza, Egypt; Hanaa E.-S., Department of Entomology, Faculty of Science, Cairo University, Giza, Egypt; Fathia G., Department of Medical Malacology, Theodor Bilharz Research Institute, Giza, Egypt; Marwa M., Department of Medical Malacology, Theodor Bilharz Research Institute, Giza, Egypt

Abstract

The water bug Sphaerodema urinator Duforas (Hemiptera: Belostomatidae), inhabits lakes, ponds, marches and rice fields, was found to predate on a wide range of other aquatic organisms like insects and snails. To evaluate the predatory potential on the Fasciola intermediate host, Lymnaea natalensis Krauss snail, laboratory studies involved searching; encounter, consumption and prey preference were achieved. Obtained results indicated that the searching time of the predator ranged between 3.4±0.5 to 7.8±0.9 min and handling time ranged between 18.8±1.01 to 25±1.0 min, depending on the snail size and the predator vulnerability. The adult water bug could kill and consume small-, medium- and large-sized snails. Number of snails consumed/ day differed according to their size and density. Preference experiments showed that the adult predator prefers small size snails than medium or large ones. This study suggested that the predator, S. urinator may be potentially suitable as a bio-control agent against Fasciola intermediate host, L. natalensis. © 2016 Egyptian Society for Biological Control of Pests. All rights reserved.

Keywords

Fasciola; Intermediate host; Predator; Snail; Sphaerodema urinator

Citation Information

Scopus Citations: 5

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