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A Preliminary List of Aquatic and Semi-aquatic Hemiptera (arthropoda: Insecta) of Chittagong University Campus, Bangladesh

Tahera Hossain
Senior Scientific Officer, Radiation Entomology and Acarology Division, Atomic Energy Research Establishment, Savar, Dhaka, Bangladesh

Dr. M Habibur Rahman
Associate Professor, Department of Zoology, University of Chittagong, Bangladesh

Abstract/ Executive Summary:

A list of Aquatic and Semi-aquatic hemiptera has been studied from some selected ponds and lakes of Chittagong University Campus during December’08 to August’09 in the present study. Insects were collected from the edge as well as deep water of the ponds by nets and hand pickup. Collected specimens were preserved in 70% alcohol and Identification up to family level was carried out following different available keys and up to generic and species level by using the keys of Distant. A total of 17 species of Hemiptera were recorded which belongs to 12 genera and 9 families. Numbers of species identified in each family reached 3 in Corixidae, 2 in Pleidae, 2 in Notonectidae, 3 in Belostomatidae, 3 in Nepidae, and 1 species to each family of Gerridae, Hydrometridae, Veliidae and Mesoveliidae. The finding shows no significant change in number of genera and families in the study region due to ecological change for decades. At the same time no new insects has been identified in the present study.

Keywords: Aquatic, Semi-aquatic, Hemiptera, Chittagong University, Bangladesh

Location: Chittagong University Campus, Bangladesh

Start Date: 00-12-2008

End Date: 00-08-2009

Program Area: Pest Management

Commodity: Insects

Objectives:

The present study was undertaken to make a checklist of the aquatic and semi aquatic Hemiptera from different location of the Campus through the intensive collection, preservation and identification.

Methodology:

Aquatic and semi aquatic Hemiptera were collected from some selected ponds and lakes of the Chittagong University Campus area usually once a week during the study period (December, 2008 to August, 2009). Submerged insects were collected by dredge net and in case of surface dwellers sweep insect net was used although hands picking was common. Collections were made along the edge and sometimes in the dipper parts of the water bodies. Plankton net was also used to sample the small sized floating insects of open water. Collected specimens were preserved in 70% alcohol. Identification up to family level was done following different available keys and up to generic and species level by using the keys of Distant, Ameen and Nessa, Alam et al.

Source of Information: Journal of Entomology and Zoology Studies 2018; 6(3): 1010-1014

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

As Hemipterans fauna have been studied in small scale previously, an attempt should be taken systematically to collect and identify the aquatic and semi aquatic Hemipterans fauna in Bangladesh. Having those importance in mind, the study, up to lowest taxa, on the ecology and distribution of aquatic and semi aquatic Hemipterans in the undisturbed environment of the campus was conducted. The identified data shows that the study area is still enriched with insects. The brief description of each insect in the study would help future workers in this field.

Knowledge Management: Journal