Quadrate Analysis & Pitfall Trap Study on Arthropod Fauna

Quadrate Analysis & Pitfall Trap Study on Arthropod Fauna at Murti and Gorumara, Jalpaiguri, West Bengal

Introduction

Objectives of study

Ecological study : Area selection

Description of the journey

Description of study area

Geographical location

Climate

Wheather

Temperature: at Murti MAX-20°c MIN-9°c at Lataguri MAX-22°c MIN-12°c

Relative humidity: at Murti 60-70% at Lataguri 65-75% (According to local forest office)

Quadrate Analysis

QUADRATE	NUMBER OF ARTHROPODS		TIME
1	Thysanoptera:  4 Coleoptera: 8 Hemiptera: 2 Hymenoptera: 6 Diptera: 0 Orthoptera: 0		15:00- 16:00 hrs
2	Thysanoptera: 2 Coleoptera: 16 Hemiptera: 1 Hymenoptera: 3 Diptera: 0 Orthoptera: 0
3	Thysanoptera: 3 Coleoptera: 10 Hemiptera: 2 Hymenoptera: 5 Diptera: 0 Orthoptera: 0
4	Thysanoptera:  1 Coleoptera: 2 Hemiptera: 0 Hymenoptera: 2 Diptera: 6 Orthoptera: 6		07:00-08:00 hrs
5	Thysanoptera:  0 Coleoptera: 2 Hemiptera: 1 Hymenoptera: 2 Diptera: 3 Orthoptera: 2
ORDER		AVERAGE (n)		n(n-1)
Thysanoptera		2		2
Hymenoptera		3.6		9.36
Coleoptera		7.6		50.16
Hemiptera		1.2		0.24
Diptera		1.8		1.44
Orthoptera		1.6		0.96
∑n = N = 17.8                                                    ∑n(n-1) = 64.16

Discussion

Pitfall Trap Study

Method

Data Collection

DATE	22.01.2012				23.01.2012
	PLACE
TRAP	MURTI				GORUMARA
1	Hymenoptera: 2 Diptera: 1 Hemiptera: 1				Diptera: 1 Coleoptera: 1 Apteregota: 4
2	Diptera: 1 Hymenoptera: 0 Apteregota: 0				Diptera: 2 Hymenoptera: 4 Apteregota: 4 Spider: 1
3	Hymenoptera: 5 Apteregota: 0 Coleoptera: 0				Hymenoptera: 3 Apteregota: 2 Spider: 2
4	Diptera: 1 Hymenoptera: 0 Apteregota: 0				Diptera: 2 Apteregota: 4 Coleoptera: 1
5	Hymenoptera: 2 Diptera: 1 Apteregota: 0 Coleoptera: 0				Hymenoptera: 2 Apteregota: 1 Coleoptera: 6 Spider: 1
TYPES OF INSECTS		MURTI		GORUMARA
		Average (n)	n (n-1)	Average (n)		n (n-1)
Hymenoptera		1.8	1.44	1.8		1.44
Diptera		0.8	-0.4	1		0
Hemiptera		0.2	-0.16	0		0
Coleoptera		0	0	1.6		0.96
Apterigota		0	0	3		6
Spider		0	0	0.8		-0.16
Total		∑n = N = 2.8	∑n(n-1) = 0.88	∑n = N = 8.2		∑n(n-1) = 8.24

Discussion

© Tanmoy Bhaduri