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A Preliminary Survey of Arthropod Diversity Through Pitfall Trap in the Selective Habitats at Rajshahi University Campus

Mosharrof Hossain
Department of Zoology, University of Rajshahi, Rajshahi-6205, Bangladesh

Abstract/ Executive Summary:

The maximum number of the total collected specimen was insects (85%) and the rest were arachnids (5%). Among the insects the highest percentage was from the order Coleoptera (41%). The orders Hymenoptera (26%) and Orthoptera (14%) were also important from the point of population density (Fig.2). The present survey results predicting that the diversity among the arthropods was also different in the three habitats.

Keywords: Arthropod, diversity, Insects, Pitfall trap

Location: Department of Zoology, University of Rajshahi, Rajshahi

Start Date: 00-12-2003

End Date: 00-02-2004

Program Area: Pest Management

Commodity: Predator

Objectives:

The present survey aimed to investigate arthropod diversity and density to different habitats at Rajshahi University Campus (RU campus).

Methodology:

Site selection: Three habitats, grass land, crop land and beside pond were selected for pitfall trap setting and sampling arthropods. Grass land was primarily composed of herbaceous spermatophytes of grass and grass like plants of family Gramineae. The mustard field was chosen for trap setting was covered with weeds. Beside the ponds of the RU campus, there are long grassy lands shaded by medium sized bushes and tall trees, and this habitat was also selected for trap setting. Trap setting and Sampling: Total 36 pitfall traps were set in the three habitats. Four sticks each one meter length was used to measure an area of one meter square and four traps were set in each corner of the area. Thus three replications of collection site were established at each of the three studied habitats. The traps were kept opened for 72 hours and then the mouth wasclosed and brought to the Insect Research Laboratory, Department of Zoology, University of Rajshahi. The collected insects were preserved in 70% alcohol keeping individually in separate vials labeled marked with dates, habitats and replication number. The traps were set every week for three month from December, 2003 to February 2004. The collected specimens were recorded and identified up to order level. The numbers of insects of each order were recorded separately for each of the studied habitat. Distribution of insects at different habitats was presented by number, and that of orders found at RU campus was presented by percentage.

Source of Information: Univ. j. zool. Rajshahi. Univ. Vol. 29, 2010 pp. 73-76; ISSN 1023-6104

Article Link (Online Journal): http://journals.sfu.ca/bd/index.php/UJZRU

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It is concluded that pitfall trap is easy to measure the arthropod diversity in different habitat rapidly.

Knowledge Management: Journal