Relationships between dietary carotenoids, body tissue carotenoids, parasite burden, and health state in wild mallard (Anas platyrhynchos) ducklings

2010 ◽  
Vol 504 (1) ◽  
pp. 154-160 ◽  
Author(s):  
Michael W. Butler ◽  
Kevin J. McGraw
Keyword(s):  
Anas Platyrhynchos ◽  
Parasite Burden ◽  
Body Tissue ◽  
Health State ◽  
Wild Mallard

Isolation of Newcastle disease virus from a wild mallard duck (Anas platyrhynchos)

1979 ◽  
Vol 105 (14) ◽  
pp. 328-329 ◽  
Author(s):  
D. Alexander ◽  
D. Spackman ◽  
W. Allan ◽  
L. Borland
Keyword(s):  
Newcastle Disease Virus ◽  
Disease Virus ◽  
Newcastle Disease ◽  
Anas Platyrhynchos ◽  
Mallard Duck ◽  
Wild Mallard

Marbofloxacin Disposition After Intravenous Administration of a Single Dose in Wild Mallard Ducks (Anas platyrhynchos)

2012 ◽  
Vol 26 (1) ◽  
pp. 6-10 ◽  
Author(s):  
Marino Garcia-Montijano ◽  
J. Julio de Lucas ◽  
Casilda Rodríguez ◽  
Fernando González ◽  
Manuel Ignacio San Andrés ◽  
...  
Keyword(s):  
Single Dose ◽  
Intravenous Administration ◽  
Anas Platyrhynchos ◽  
Wild Mallard

Duck’s not dead: Does restocking with captive bred individuals affect the genetic integrity of wild mallard (Anas platyrhynchos) population?

2012 ◽  
Vol 152 ◽  
pp. 231-240 ◽  
Author(s):  
Dagmar Čížková ◽  
Veronika Javůrková ◽  
Jocelyn Champagnon ◽  
Jakub Kreisinger
Keyword(s):  
Anas Platyrhynchos ◽  
Genetic Integrity ◽  
Wild Mallard

scholarly journals Incubation Length of Dabbling Ducks

The Condor ◽  
2005 ◽  
Vol 107 (4) ◽  
pp. 926-929
Author(s):  
Alicia M. Wells-Berlin ◽  
Harold H. Prince ◽  
Todd W. Arnold
Keyword(s):  
Incubation Temperature ◽  
Anas Platyrhynchos ◽  
Small Sample ◽  
Dabbling Ducks ◽  
Constant Environment ◽  
Seasonal Decline ◽  
Wild Mallard

AbstractWe collected unincubated eggs from wild Mallard (Anas platyrhynchos), Gadwall (A. strepera), Blue-winged Teal (A. discors), and Northern Shoveler (A. clypeata) nests and artificially incubated them at 37.5°C. Average incubation lengths of Mallard, Gadwall, and Northern Shoveler eggs did not differ from their wild-nesting counterparts, but artificially incubated Blue-winged Teal eggs required an additional 1.7 days to hatch, suggesting that wild-nesting teal incubated more effectively. A small sample of Mallard, Gadwall, and Northern Shoveler eggs artificially incubated at 38.3°C hatched 1 day sooner, indicating that incubation temperature affected incubation length. Mean incubation length of Blue-winged Teal declined by 1 day for each 11-day delay in nesting, but we found no such seasonal decline among Mallards, Gadwalls, or Northern Shovelers. There is no obvious explanation for the seasonal reduction in incubation length for Blue-winged Teal eggs incubated in a constant environment, and the phenomenon deserves further study.

scholarly journals Sex-specific relationships between urbanization, parasitism, and plumage coloration in house finches

2020 ◽  
Author(s):  
Brooke E Sykes ◽  
Pierce Hutton ◽  
Kevin J McGraw
Keyword(s):  
Parasite Burden ◽  
Urban Environments ◽  
Plumage Coloration ◽  
Health State ◽  
House Finches ◽  
Carotenoid Coloration ◽  
Female Ornaments ◽  
Males And Females ◽  
The City ◽  
Male House

Abstract Historically, studies of condition-dependent signals in animals have been male-centric, but recent work suggests that female ornaments can also communicate individual quality (e.g., disease state, fecundity). There also has been a surge of interest in how urbanization alters signaling traits, but we know little about if and how cities affect signal expression in female animals. We measured carotenoid-based plumage coloration and coccidian (Isospora spp.) parasite burden in desert and city populations of house finches Haemorhous mexicanus to examine links between urbanization, health state, and feather pigmentation in males and females. In earlier work, we showed that male house finches are less colorful and more parasitized in the city, and we again detected such patterns in this study for males; however, urban females were less colorful, but not more parasitized, than rural females. Moreover, contrary to rural populations, we found that urban birds (regardless of sex) with larger patches of carotenoid coloration were also more heavily infected with coccidia. These results show that urban environments can disrupt condition-dependent color expression and highlight the need for more studies on how cities affect disease and signaling traits in both male and female animals.

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