Jacobs Journal of Entomology and Zoological Studies

A Study on the Functional Responses of Gambusia affinis to Aedes albopictus Skuse

*Lijuan Liu
Shandong Academy Of Medical Sciences, Shandong Institute Of Parasitic Diseases, China

*Corresponding Author:
Lijuan Liu
Shandong Academy Of Medical Sciences, Shandong Institute Of Parasitic Diseases, China
Email:jj8liu@sina.com

Published on: 2018-03-28

Abstract

In this study, the predation of Gambusia affinis (Baird et Girard) to Aedes albopictus Skuse was studied in a laboratory. The results show that the functional response of G. affinis to Ae. albopictus qualifies as Holling’s type III. The model parameters for this group were estimated as follows: the search rate (a) of G. affinis (female and male) to Ae. albopictus were 0.0524, 0.0656. The experimental data can be described using Hassell’s equation and Wang Shize’s equation. The effect of different levels of hunger on the predation of G. affinis indicated that hunger could not change the functional response types but sim- ply affected the functional response parameters. The handling times for female G. affinis for 12 hours, 24 hours, 36 hours, and 48 hours of starvation were 0.1317, 0.1143, 0.0086, and 0.0830, respectively, and the handling times for male Gambusia affinis were 0.3784, 0.3902, 0.3447, and 0.1390, respectively. As the level of hunger increased, the handling times for female and male G. affinis reduced. When the spatial heterogeneity was complex, the functional response of female adult G. affinis specimens on Ae. albopictus showed the Holling III property and the functional response of male adult of G. affinis on Ae. albopictus showed the Holling I property.

Keywords

Gambusia affinis (Baird et Girard); Aedes albopictus Skuse; Functional response

Introduction

ambusia affinis, a member of the family Poeciliidae of order Cyprinodontiformes, is a small ovoviviparous tropical fish native to the lowlands and ditches on the Atlantic coast of North America and is known to consume mosquito lar- vae. So far, G. affinis have been introduced throughout the world to control larval mosquito populations in aquatic en- vironments. Scientists in many countries have conducted detailed laboratory and field studies on G. affinis , demon- strating that G. affinis have the potential for biological con- trol of mosquitoes. According to literature, G. affinis were introduced to Shanghai, China in 1927 from Manila, the Philippines. Relevant studies on their mosquito and malaria control have been reported domestically. However, most of the reports focused on experimental observations instead of detailed theoretical analysis.