observational record of pre-mating and mating behaviors of different families of butterflies in some...
TRANSCRIPT
Observational Record of Pre-mating and Mating Behaviors of
Different Families of Butterflies in Some Selected Areas of Bangladesh
Roll: 901Reg. No.: HA-2571
Department of ZoologyUniversity of Dhaka
INTRODUCTION
• Butterfly
• Pre-mating and mating behaviorRelation with abiotic factorsDifferent vegetation layersDifferent time schedules
MATERIALS AND METHODS
• Study Period: March’15 to February’16
• Experimental procedures:(Rutowski 1997; Lederhouse 1995)
• Emergent Sampling method
• Statistical analysis:- Correlation-coefficient- ANOVA- Regression
Figure. Map of Bangladesh (red circles are study areas)
RESULTS AND DISCUSSION
• Perchingbehavior
• Patrolling behavior
• Hair-pencil behavior
• Pupal matingFigure. Observed pre-mating and mating occurrences
Pieridae
Danaid
ae
Satyr
idae
Nymphali
dae
Hesperiid
ae
Papilio
nidae
Lycae
nidae
0
5
10
15
20
25
107
5
1519
11
21
3 24
1
63
7Pre-mating Mating
Butterfly families
No.
of s
peci
es
Figure. Fluctuation of observed pre-mating occurrences throughout the study period (March’15 to February’16)
March
AprilMay June
July
August
Septem
ber
October
November
December
January
February
0
10
20
30
40
50
60
70
LycaenidaePapilionidaeHesperiidaeNymphalidaeSatyridaeDanaidaePieridae
Months
Abso
lute
freq
uenc
y(p
re-m
ating
)
Figure. Fluctuation of observed mating occurrences throughout the study period (March’15 to February’16)
March
AprilMay June
July
August
Septem
ber
October
November
December
January
February
0
2
4
6
8
10
12
14
LycaenidaePapilionidaeHesperidaeNymphalidaeSatyridaeDanaidaePieridae
Months
Abso
lute
freq
uenc
y(m
ating
)
Figure. Fluctuation of pre-mating and mating occurrences in relation to different abiotic factors
45 50 55 60 65 70 75 800
10203040506070
Pre-mating Mating
Humidity (%)
Abso
lute
freq
uenc
y
0 1 2 3 4 5 6 7 80
10203040506070
Pre-mating Mating
Precipitation (mm)
Abso
lute
freq
uenc
y
10 10.5 11 11.5 12 12.5 13 13.50
10203040506070
Pre-mating Mating
Day Length (hour)
Abso
lute
freq
uenc
y
18 20 22 24 26 28 300
10203040506070
Pre-mating Mating
Temperature (°C)
Abso
lute
freq
uenc
y
• Statistical analyses (In case of observed pre-mating occurrences)
• Correlation coefficient values are,
Butterfly Families
Humidity Precipitation Day length Temperature
Pieridae -0.44 -0.25 -0.07 0.05
Danaidae 0.05 0.37 0.40 0.43
Satyridae 0.10 -0.40 -0.07 0.29
Nymphalidae -0.80 -0.54 -0.29 -0.14
Hesperidae -0.37 -0.65 -0.55 -0.23
Papilionidae -0.12 -0.14 -0.02 0.47
Lycaenidae -0.44 -0.40 -0.11 0.10
F= 227.23 Fcrit= 1.928 P= 3.97E-63
• Statistical analyses (In case of observed mating occurrences)
• Correlation-coefficient values are
Butterfly
Families
Humidity Precipitation Day length Temperature
Pieridae -0.66 -0.77 -0.80 -0.33
Danaidae 0.76 0.79 0.94 0.98
Satyridae 0.43 0.22 0.20 0.73
Nymphalidae
Hesperidae -0.21 -0.61 -0.42 0
Papilionidae
Lycaenidae 0.14 -0.24 -0.25 0.05
F= 241.31 Fcrit= 1.99 P= 1.49E-44
Figure. Observed pre-mating and mating of butterflies in different vegetation layers
Pieridae Danaidae Satyridae Nymphalidae Hesperiidae Papilionidae Lycaenidae0
20
40
60
80
100
120
Herb Shrub Tree
Different butterfly families
Pre-
mati
ng fr
eque
ncy
Pieridae Danaidae Satyridae Nymphalidae Hesperidae Papilionidae Lycaenidae02468
101214
Herb Shrub Tree
Different butterfly families
Mati
ng fr
eque
ncy
P= 0.0003
Figure. Observed pre-mating and mating occurrences of butterflies in different time schedules
9.00-10.00 10.00-11.00 11.00-12.00 12.00-13.00 13.00-14.00 14.00-15.00 15.00-16.000
20
40
60
80
100
120
140
30
59
95
117
61
46
21
211
16 19
7 103
Pre-mating Mating
Time schedule
Abso
lute
freq
uenc
y
CONCLUSION
- Monthly fluctuation observed- Abiotic factors had significant impact- Environmental biassness- True interest in specific vegetation layer- Peak interest towards specific time schedules of a day
ACKNOWLEDGEMENT• Prof. Dr. M. A. Bashar• Prof. Dr. Md. Anwarul Islam• All teachers and stuffs• EBBL researchers• NST
Thank you.