NDLI: A comparative study of predation of three aquatic heteropteran bugs on Culex quinquefasciatus larvae

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A comparative study of predation of three aquatic heteropteran bugs on Culex quinquefasciatus larvae

Content Provider	Springer Nature Link
Author	Saha, Nabaneeta Aditya, Gautam Bal, Animesh Saha, Goutam Kumar
Copyright Year	2007
Abstract	The aquatic bugs Anisops bouvieri Kirkaldy 1704 (Heteroptera: Notonectidae), Diplonychus (=Sphaerodema) rusticus Fabricius 1781, and Diplonychus annulatus Fabricius 1781 (Heteroptera: Belostomatidae) are common members of the freshwater insect communities of the East Calcutta Wetlands along the eastern fringe of Kolkata, India. These insects are established predators of dipteran larvae and other organisms. A comparative account of their predatory efficiency was made using larvae of Culex quinquefasciatus Say 1823 in the laboratory. It was revealed that a single adult of A. bouvieri could consume 28–34 fourth-instar mosquito larvae per day, D. rusticus 11–87 fourth-instar mosquito larvae per day, and D. annulatus 33–122 fourth-instar mosquito larvae per day, depending upon the prey and predator densities. The mean predation rate of A. bouvieri and D. annulatus remained stable over a 6-day feeding period but varied for D. rusticus. The predatory impact (PI) values were 14.77–17.31, 46.9–55.73, and 61.74–72.72 larvae/day for A. bouvieri, D. rusticus, and D. annulatus, respectively. Compared to these, the clearance rate (CR) value range was 9.06–13.25 for A. bouvieri, 13.64–15.99 for D. rusticus, and 13.50–16.52 larvae l/day/predator for D. annulatus. The values of mutual interference, “m,” remained 0.06–0.78 for A. bouvieri, 0.003–0.25 for D. rusticus, and 0.09–0.27 for D. annulatus, and did not vary between the days. The difference in predatory efficiency, CR, and PI values varied significantly among the three predators, indicating the possible difference in the function as predators occupying the same guild. It can be assumed that these predators play an important role in larval population regulation of mosquitoes and thereby impart an effect on species composition and interactions in the aquatic insect communities of the wetlands and other similar habitats where they occur.
Starting Page	73
Ending Page	80
Page Count	8
File Format	PDF
ISSN	14398621
Journal	Limnology
Volume Number	8
Issue Number	1
e-ISSN	1439863X
Language	English
Publisher	Springer-Verlag
Publisher Date	2007-03-07
Publisher Place	Tokyo
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Water bugs Diplonychus (=Sphaerodema) annulatus Diplonychus rusticus Anisops bouvieri Culex quinquefasciatus Predation Predatory interference Wetlands Ecology Environment Hydrobiology
Content Type	Text
Resource Type	Article
Subject	Ecology Aquatic Science Water Science and Technology

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