Seasonality of Swallowtails-ppt97.ppt
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Transcript of Seasonality of Swallowtails-ppt97.ppt
Dr. P R Arun
STUDY AREA Moist-deciduous Forest
At Siruvani, Southern Western Ghats 10o 56’ - 58’ N and 76o 41’ - 45’ E
Study Period Two years (1994-1996)
Transect Counting Method Weekly counts over two years
SWALLOWTAIL BUTTERFLIES OF SIRUVANI
0.00
5.00
10.00
15.00
20.00Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
0.0
2.0
4.0
6.0
8.0
10.0
12.0
14.0
16.0
18.0
NE Monsoon Winter Summer SW Monsoon
Mea
n nu
mbe
r/co
unt
0.00
20.00
40.00
60.00
80.00
100.00
120.00
140.00
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Tot
al b
utte
rflie
s/ c
oun
t
0.00
3.00
6.00
9.00
12.00
15.00
18.00
21.00
No.
of
swal
low
tails
/ co
unt
Total Butterflies Papilionidae
CONCLUSION Fluctuations in Swallowtail populations indicate that
overall butterfly population It could be used an indicator group for assessing overall
butterfly abundance Suitable as indicators because of
Larger size & conspicuous patterns Easy to identify even from a distance Relatively lower species diversity
