3 rd North American Sea Duck Conference Château Laurier, Québec Dr. Jean-Pierre L. Savard
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Page 1 – 22-7-4 Wing Moult Chronology, Duration and Synchronicity in Captive Harlequin Ducks, Surf Scoters, White-winged Scoters and Long- tailed Ducks 3 rd North American Sea Duck Conference Château Laurier, Québec Dr. Jean-Pierre L. Savard Science and Technology
description
Wing Moult Chronology, Duration and Synchronicity in Captive Harlequin Ducks, Surf Scoters, White-winged Scoters and Long-tailed Ducks. 3 rd North American Sea Duck Conference Château Laurier, Québec Dr. Jean-Pierre L. Savard Science and Technology 10-14 November 2008. Authors. - PowerPoint PPT Presentation
Transcript of 3 rd North American Sea Duck Conference Château Laurier, Québec Dr. Jean-Pierre L. Savard
Page 1 – 23-4-24
Wing Moult Chronology, Duration and Synchronicity in Captive Harlequin Ducks, Surf Scoters, White-winged Scoters and Long-tailed Ducks
3rd North AmericanSea Duck ConferenceChâteau Laurier, QuébecDr. Jean-Pierre L. SavardScience and Technology10-14 November 2008
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Authors
• Jean-Pierre L. Savard (S&T, EC)
• Matthew C. Perry (USGS)
• Jean-François Savard (Univ. Maryland)
• Alicia M. Wells-Berlin (USGS)
• Scott G. Gilliland (CWS)
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Preliminary results
•Morphometry
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Comparison of male and female weights
400.0
500.0
600.0
700.0
800.0
900.0
1000.0
1100.0
1200.0
1300.0
1400.0
SUSC WWSC LTDU HADU
Male weigth Female weight
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Male and female Wing Chord
150.0
175.0
200.0
225.0
250.0
275.0
300.0
SUSC WWSC LTDU HADU
Male wing chord Female wing chord
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Length of 9th primary
120.0
130.0
140.0
150.0
160.0
170.0
180.0
SUSC WWSC LTDU HADU
Male 9th primary Female 9th primary
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Correlation between morphometric measurements (males and females of all
species)
Weight Tarsus CulmenCulmen
width9th
primary
Weight
Tarsus 0.917
Culmen 0.917 0.913
Cul-width 0.935 0.866 0.973
9th 0.985 0.925 0.929 0.954
Wing 0.986 0.922 0.909 0.930 0.996
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•Differences in moult chronology between
species
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Comparison of moult chronology between species: males
0.010.020.030.040.050.060.070.080.090.0
100.0
08-0
7-08
08-0
7-15
08-0
7-22
08-0
7-29
08-0
8-05
08-0
8-12
08-0
8-19
08-0
8-26
08-0
9-02
08-0
9-09
08-0
9-16
08-0
9-23
Date
%
SUSC-M WWSC-M LTDU-M HADU-M
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Comparison of moult chronology between species: females
0.010.020.030.040.050.060.070.080.090.0
100.0
08-0
7-15
08-0
7-22
08-0
7-29
08-0
8-05
08-0
8-12
08-0
8-19
08-0
8-26
08-0
9-02
08-0
9-09
08-0
9-16
08-0
9-23
08-0
9-30
Date
%
SUSC-F WWSC-F LTDU-F HADU-F
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•Differences in moult chronology between
sexes
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Difference in moult chronology between males and females
0.0
20.0
40.0
60.0
80.0
100.0
08-0
7-08
08-0
7-15
08-0
7-22
08-0
7-29
08-0
8-05
08-0
8-12
08-0
8-19
08-0
8-26
08-0
9-02
08-0
9-09
08-0
9-16
08-0
9-23
Date
%
SUSC-M SUSC-F WWSC-M WWSC-F
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Difference in moult chronology between males and females
0.0
20.0
40.0
60.0
80.0
100.0
120.0
08-0
7-23
08-0
7-30
08-0
8-06
08-0
8-13
08-0
8-20
08-0
8-27
08-0
9-03
08-0
9-10
08-0
9-17
08-0
9-24
08-1
0-01
Date
%
LTDU-M LTDU-F HADU-M HADU-F
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Preliminary statistics (Anova)
• Males initiated moult 7.2 ± 2.4 days earlier than females (P = 0.0044)
• LTDU started moult 17.9 ± 3.6 days earlier than HADU (P = 0.0002)
• SUSC started 23.8 ± 3.4 days earlier than HADU (P = 0.0000)
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• WWSC 15.7 ± 2.7 days earlier than HADU (P = 0.000)
• WWSC 8.1 ± 3.5 days later than SUSC (P = 0.1538)
• WWSC and LTDU: +2.2 ± 3.5 days (P = 0.9397)
• SUSC and LTDU: -5.9 ± 4.1 days (P = 0.5660)
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Age (days)0 10 20 30 40 50
Nin
th P
rimar
y (m
m)
020406080
100120140160180200
Harlequin DuckLong-tailed DuckSurf ScoterWhite-winged Scoter
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9th primary growth rate
• Not constant
• Slow in first week
• Fast in following 3 weeks
• Slowing gradually in last 3 weeks
• Seems to slow down after fligth capability has been regained
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White-winged Scoter males (Growth: mm/day)
0.00
1.00
2.00
3.00
4.00
5.00
6.00
WWSC-134
WWSC-3725
WWSC-599
WWSC-652
WWSC-170
WWSC-174
WWSC-171
WWSC-643
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White-winged Scoter females (Growth: mm/day)
0
1
2
3
4
5
6
WWSC-172 WWSC-483 WWSC-598 WWSC-600 WWSC-642 WWSC-490 WWSC-639
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Surf Scoter males: growth (mm/day)
00.5
11.5
22.5
33.5
44.5
5
SUSC-m-630 SUSC-m-626 SUSC-m-628
SUSC-m-629 SUSC-m-625
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Surf Scoter females: growth rate (mm/day)
0.000.501.001.502.002.503.003.504.004.505.00
15/0
7/20
08
22/0
7/20
08
29/0
7/20
08
05/0
8/20
08
12/0
8/20
08
19/0
8/20
08
26/0
8/20
08
02/0
9/20
08
09/0
9/20
08
16/0
9/20
08
23/0
9/20
08
30/0
9/20
08
07/1
0/20
08
SUSC-F635 SUSC-F632 SUSC-F633
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Long-tailed Duck males: growth rate (mmm/day)
0.00
1.00
2.00
3.00
4.00
5.00
6.00
LTDU-660 LTDU-565 LTDU-571
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Long-tailed Duck females: growth rate (mm/day)
0.00
1.00
2.00
3.00
4.00
5.00
6.00
LTDU-572 LTDU-191 LTDU-194 LTDU-343 LTDU-656 LTDU-659
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Harlequin Duck females: growth (mm/day)
0.000.501.001.502.002.503.003.504.004.505.00
HADU-554 HADU-544 HADU-546 HADU-561 HADU-562 HADU-556
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Harlequin Duck males: growth rate (mm3day)
0.000.501.001.502.002.503.003.504.004.505.00
06/0
8/20
08
13/0
8/20
08
20/0
8/20
08
27/0
8/20
08
03/0
9/20
08
10/0
9/20
08
17/0
9/20
08
24/0
9/20
08
01/1
0/20
08
08/1
0/20
08
HADU-548 HADU-550 HADU-559 HADU-560 HADU-552
HADU-555 HADU-557
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Harlequin Duck males: growth rate (mm/day)
0.000.501.001.502.002.503.003.504.004.505.00
30/0
7/20
08
06/0
8/20
08
13/0
8/20
08
20/0
8/20
08
27/0
8/20
08
03/0
9/20
08
10/0
9/20
08
17/0
9/20
08
24/0
9/20
08
01/1
0/20
08
HADU-558 HADU-541 HADU-542 HADU-543 HADU-545 HADU-547
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Mean growth rate (mm/day) (3 weeks with the greatest growth rates)
Males (9th mm) Females
WWSC 4.66 (178) 4.58 (169)
SUSC 4.26 (154) 4.19 (148)
LTDU 4.70 (142) 4.57 (134)
HADU 3.94 (131) 3.90 (129)
BAGO (van de Wetering 1997)
3.30 to 4.102.35 to 4.62
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Length of fligthless period (80%)
Males Females
WWSC 36 31
SUSC 33 32
LTDU 28 26
HADU 31 29
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9th primary length in captured moulting Surf Scoterson the Labrador coast
Ninth Primary (mm)0 20 40 60 80 100 120 140 160
Cou
nt
0
10
20
30
40
50
60
Age
(day
s)
0
10
20
30
40
50
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Surf Scoter 629
J-9
J-23
J-23
J-15
J-30
A-6
A-14
A-21
A-27
S-3
S-10
O-8
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July 23 (old)
July 15 (old)
July 8 (old)
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August 14 (40)
August 6 (6)
July 30 (0)
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August 21 (63)
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September 10(136)
September 3 (120)
August 27 (89)
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October 8 (155)
September 24(155)
September 17(153)
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Merci
Thank you
