Functional response analysis of Anisops sardea (Hemiptera: Notonectidae) against Culex quinquefasciatus in laboratory condition

• Main Authors: Rajendra Prasad Mondal, Anupam Ghosh, Subhasis Bandyopadhyay, Goutam Chandra
• Format: Article
• Language: English
• Published: Wolters Kluwer Medknow Publications 2014-01-01
• Series: Indian Journal of Medical Research
• Subjects: Anisops sardea - consumption rate - functional response - habitat modification - mosquito larva
• Online Access: http://www.ijmr.org.in/article.asp?issn=0971-5916;year=2014;volume=140;issue=4;spage=551;epage=555;aulast=Mondal

Background & objectives: Culex quinquefasciatus is the principal vector of lymphatic filariasis (LF). Application of alternative vector control methodologies are aimed at reduction of mosquito breeding sites and biting activity through the use of biological control methods. In the present study, functional response of aquatic Hemipteran backswimmer, Anisops sardea was assessed against Cx. quinquefasciatus larvae in laboratory bioassay. Methods: The functional respons of A. sardea was assessed against III rd instar larvae of Cx. quinquefasciatus. Respective handling times and coefficient of attack rates were determined by a non linear polynomeal regression equation. Results: The results of rates of predation in variable prey densities exhibited a ′linear rise to plateau curve′, associated with ′Type -II′ functional response. The logistic regression estimated a significant negative linear parameter (P 1 <0) which also supported the same observation. Associated ′attack rates′ and ′handling times′ were also calculated using the Holling Disc Equation. Interpretation & conclusions: The results of present experiments indicate that A. sardea can be used as a biocontrol agent against the larval forms of Cx. quinquefasciatus in temporarily available breeding places of mosquito with relatively clear water. However, a detailed field study has to be done to confirm these findings.