Helminth Community Dynamics in Populations of Blue-Winged Teal (Anas discors) Using Two Distinct Migratory Corridors
Table 1
Number of hosts infected (), prevalence (%), and mean abundance () of 40 helminth species from 184 blue-winged teal (Anas discors) collected from eastern and western migratory corridors.
Prevalence
Abundance
Eastern corridor
Western corridor
(%)
Total
(%)
Abundance
(%)
Abundance
Acanthocephala
Corynosoma constrictum, SI, LI
101 (54.9)
8.4 ± 1.5
1,553
37 (37.0)
1.9 ± 0.6
64 (76.2)
16.2 ± 2.9
Cestoda
Cloacotaenia megalops, CL
146 (79.3)
4.7 ± 0.4
870
80 (80.0)
4.1 ± 0.4
67 (79.8)
5.4 ± 0.7
Diorchis sp., SI, LI
26 (14.1)
0.7 ± 0.2
129
13 (13.0)
0.9 ± 0.4
13 (15.5)
0.7 ± 0.1
Drepanidotaenia sp., L, MW
7 (3.8)
0.2 ± 0.1
29
1 (1.0)
0.1 ± 0.1
6 (7.1)
0.3 ± 0.1
Echinocotyle rosseteri, SI, LI
115 (62.5)
12.1 ± 2.7
2,220
61 (61.0)
8.7 ± 2.2
54 (64.3)
16.1 ± 5.2
Hymenolepis sp*, SI
6 (3.2)
0.5 ± 0.2
87
2 (2.0)
0.4 ± 0.4
4 (4.8)
0.6 ± 0.5
Fimbraria fasciolaris, SI, LI
14 (7.6)
0.2 ± 0.1
30
10 (10.0)
0.3 ± 0.1
4 (4.8)
0.1 ± <0.1
Gastrotaenia cygni, G
49 (26.6)
0.7 ± 0.1
137
19 (19.0)
0.6 ± 0.1
30 (35.7)
1.0 ± 0.2
Microsomacanthus hopkinsi, SI, LI
13 (7.1)
0.9 ± 0.4
162
7 (7.0)
0.6 ± 0.3
6 (7.1)
1.3 ± 0.8
Sobolevicanthus filumferens, SI, LI
22 (12.0)
1.5 ± 0.6
284
3 (3.0)
0.8 ± 0.7
19 (22.6)
2.5 ± 0.1
Nematoda
Acuraria sp. (larvae), E
6 (3.3)
0.1 ± <0.1
14
—
—
6 (7.1)
0.2 ± 0.1
Amidostomum acutum, G
169 (91.8)
6.9 ± 0.4
1,276
96 (96.0)
6.9 ± 0.5
73 (86.9)
6.9 ± 0.7
Capillaria anatis, C
69 (37.5)
1.0 ± 0.1
179
28 (28.0)
0.6 ± 0.2
41 (48.8)
1.4 ± 0.2
Capillaria contorta, BI, E
84 (45.7)
1.3 ± 0.2
238
48 (48.0)
1.2 ± 0.2
36 (42.9)
1.4 ± 0.4
Epomidiostomum uncinatum, G
49 (26.6)
0.9 ± 0.2
163
30 (30.0)
0.9 ± 0.2
19 (22.6)
0.9 ± 0.2
Porrocaecum crassum, SIA, M
1 (0.5)
<0.1
2
1 (1.0)
<0.1 ± <0.1
—
—
Sacronema sp., S
6 (3.3)
<0.1 ± <0.1
8
4 (4.0)
0.1 ± <0.1
2 (2.4)
<0.1 ± <0.1
Streptocara crassicauda, G
118 (64.1)
5.0 ± 0.7
919
56 (56.0)
2.4 ± 0.4
62 (73.8)
8.1 ± 1.3
Tetrameres ryjikovi, P
89 (48.4)
2.4 ± 0.3
448
38 (38.0)
1.7 ± 0.4
51 (60.7)
3.4 ± 0.6
Tetrameres striata, PA, F
1 (0.5)
<0.1
3
1 (1.0)
<0.1 ± <0.1
—
—
Digenea
Apatemon gracilis, SI, LI
76 (40.3)
7.0 ± 1.8
1,290
24 (24.0)
1.6 ± 0.5
52 (61.9)
13.5 ± 3.8
Dendritobilharzia pulverulenta, H
50 (27.2)
0.4 ± 0.1
73
34 (34.0)
0.5 ± 0.1
16 (19.1)
0.3 ± 0.1
Echinoparyphium recurvatum, SI, LI
52 (38.3)
6.7 ± 1.8
1,237
19 (19.0)
7.5 ± 3.1
35 (41.7)
5.8 ± 1.6
Echinostoma trivolvis, SI, LI
70 (38.0)
1.6 ± 0.3
296
41 (41.0)
2.0 ± 0.4
31 (36.9)
1.2 ± 0.3
Eucotyle zakharowi, SI, LI, C
6 (3.3)
0.1 ± 0.0
11
2 (2.0)
<0.1 ± <0.1
4 (4.8)
0.1 ± 0.1
Hyptiasmus arcuatus, SN
22 (12.0)
0.2 ± 0.1
39
6 (6.0)
0.1 ± <0.1
17 (20.2)
0.4 ± 0.1
Microphallus pygmaeus, C
16 (8.7)
4.2 ± 1.6
776
14 (14.0)
7.2 ± 0.3
2 (2.4)
0.7 ± 0.5
Notocotylus attenuatus, C
16 (8.7)
1.1 ± 0.5
196
3 (3.0)
0.3 ± 0.2
13 (15.5)
2.1 ± 1.1
Notocotylus breviserialas, CJ, F
4 (2.2)
0.4 ± 0.3
71
4 (4.0)
0.7 + 0.5
—
—
Paramonostomum alveatum, CJ, F
2 (1.1)
0.0 ± 0.0
2
2 (2.0)
<0.1 ± <0.1
—
—
Philophthalmus sp., EY, SN
11 (6.0)
0.3 ± 0.2
50
9 (9.0)
0.5 ± 0.3
2 (2.4)
<0.1 ± <0.1
Prosthogonimus cuneatus, BJ
11 (6.0)
0.2 ± 0.1
31
8 (8.0)
0.2 ± 0.1
4 (4.8)
0.1 ± <0.1
Pseudospelotrema sp., C
34 (18.5)
10.1 ± 3.1
1,864
26 (26.0)
17.5 ± 5.6
8 (9.5)
1.5 ± 0.1
Psilochasmus oxyurus, SI, LI
32 (17.4)
6.0 ± 1.8
1,104
29 (29.0)
11.0 ± 3.4
4 (4.8)
0.1 ± <0.1
Schistosome sp., MWA, M
1 (0.5)
<0.1
1
—
—
1 (1.2)
<0.1 ± <0.1
Strigea sp., SIJ, M
1 (0.5)
<0.1
4
—
—
1 (1.2)
<0.1 ± <0.1
Trichobilharzia querquedula, LV, PA, ME
175 (95.1)
44.5 ± 4.4
8,193
97 (97.0)
53.0 ± 7.2
78 (92.9)
34.4 ± 4.1
Typhlocoelum sisowi, T
26 (14.1)
0.3 ± 0.1
57
8 (8.0)
0.1 ± <0.1
18 (21.4)
0.5 ± 0.1
Typhlophilus sp., SIJ
3 (1.6)
0.1 ± 0.1
26
—
—
2 (2.4)
0.3 ± 0.3
Zygocotyle lunata, C
7 (3.8)
<0.1 ± <0.1
8
3 (3.0)
<0.1 ± <0.1
4 (4.8)
0.1 ± <0.1
Total
184 (100)
103.7 ± 6.2
24,082
100 (100)
93.4 ± 8.7
84 (100)
116.1 ± 8.6
B: bursa and female reproductive tract, BI: bill, C: ceca, CL: cloaca, E: esophagus, EY: eye, G: gizzard, H: heart, L: lung, LI: large intestine, LV: liver and gallbladder, ME: mesenteric veins, kidney and spleen, MW: miscellaneous wash, P: proventriculus, PA: pancreas, S: subcutaneous tissue, SI: small intestine, SN: nasal sinus, suborbital sinus and nasal cavity, T: trachea and larynx.
*Specimens damaged or immature cestodes that could not be identified beyond family.
ASpecies found only in adults, JSpecies found in only in juveniles.
MSpecies found only in males, FSpecies found only in females.
