Effects of a carbaryl-induced depression in invertebrate abundance on the growth and behavior of American black duck and mallard ducklings

1984 ◽  
Vol 62 (3) ◽  
pp. 452-456 ◽  
Author(s):  
Malcolm L. Hunter Jr. ◽  
Jack W. Witham ◽  
Hilary Dow
Keyword(s):  
Active Ingredient ◽  
Growth Rates ◽  
Anas Platyrhynchos ◽  
Anas Rubripes ◽  
Black Duck ◽  
Invertebrate Abundance ◽  
American Black ◽  
American Black Duck ◽  
And Behavior ◽  
Rate Of Movement

Aerially spraying ponds with carbaryl (Sevin-4-oilR) at 840 g active ingredient/ha reduced biomass and numbers of macroinvertebrates and decreased the growth rates of American black duck, Anas rubripes, and mallard. Anas platyrhynchos, ducklings in Maine. Ducklings on sprayed ponds spent more time searching for food and less time resting, and their rate of movement around the ponds was greater than for ducklings on unsprayed ponds.

American Black Duck (Anas rubripes)

2000 ◽  
Author(s):  
Jerry R. Longcore ◽  
Daniel G. McAuley ◽  
Gary R. Hepp ◽  
Judith M. Rhymer
Keyword(s):  
Anas Rubripes ◽  
Black Duck ◽  
American Black ◽  
American Black Duck

American Black Duck (Anas rubripes)

2000 ◽  
Author(s):  
Jerry R. Longcore ◽  
Daniel G. McAuley ◽  
Gary R. Hepp ◽  
Judith M. Rhymer
Keyword(s):  
Anas Rubripes ◽  
Black Duck ◽  
American Black ◽  
American Black Duck

Effects of the blood parasite Leucocytozoon simondi on growth rates of anatid ducklings

1999 ◽  
Vol 77 (10) ◽  
pp. 1573-1578 ◽  
Author(s):  
Dave Shutler ◽  
C Davison Ankney ◽  
Adele Mullie
Keyword(s):  
Growth Rates ◽  
Slow Growth ◽  
Principal Component ◽  
Blood Parasite ◽  
Wild Stock ◽  
Wild Duck ◽  
Black Duck ◽  
Size Growth ◽  
American Black ◽  
American Black Duck

The blood parasite Leucocytozoon simondi is often associated with heavy mortality of ducks and geese, especially domestic ones, in North America. In contrast, in a previous study we found no mortality from L. simondi in our wild stock of mallard (Anas platyrhynchos) and American black duck (Anas rubripes) ducklings. However, because parasites can slow growth, which could extend the interval during which ducklings are susceptible to predators, we tested for parasite effects on growth rates. We analysed growth rates over the first 20 days of life, based on tarsus length, culmen, bill width, body mass, and a principal component of structural size. Growth rates of infected ducklings were not lower than those of uninfected ducklings. Similarly, more intense infections did not have a greater effect on growth rates. Hence, growth rates were not negatively affected by L. simondi, which suggests that effects of this parasite on wild duck populations have been overestimated.

American Black Duck (Anas rubripes)

2000 ◽  
Author(s):  
Jerry R. Longcore ◽  
Daniel G. McAuley ◽  
Gary R. Hepp ◽  
Judith M. Rhymer
Keyword(s):  
Anas Rubripes ◽  
Black Duck ◽  
American Black ◽  
American Black Duck

American Black Duck (Anas rubripes)

2020 ◽  
Author(s):  
Jerry R. Longcore ◽  
Daniel G. McAuley ◽  
Gary R. Hepp ◽  
Judith M. Rhymer
Keyword(s):  
Anas Rubripes ◽  
Black Duck ◽  
American Black ◽  
American Black Duck

scholarly journals Extraordinary Size and Survival of American Black Duck, Anas rubripes, Broods

2004 ◽  
Vol 118 (1) ◽  
pp. 129
Author(s):  
Jerry R. Longcore ◽  
Daniel G. McAuley
Keyword(s):  
The Other ◽  
Anas Rubripes ◽  
Black Duck ◽  
Hancock County ◽  
American Black ◽  
American Black Duck ◽  
Class Ib ◽  
Brood Amalgamation

Two female American Black Ducks (Anas rubripes) were initially observed during June 1982 with 20 Class Ib or 18-22 Class Ia-b ducklings in two wetlands in Hancock County, Cherryfield, Maine. Fifteen of 20 ducklings (75%) in one brood and 16 of 18-22 ducklings (72-89%) in the other brood survived to fledge. These large broods probably resulted from post-hatch brood amalgamation.

True metabolizable energy of American black duck foods

2015 ◽  
Vol 79 (2) ◽  
pp. 344-348 ◽  
Author(s):  
John M. Coluccy ◽  
Michael V. Castelli ◽  
Paul M. Castelli ◽  
John W. Simpson ◽  
Scott R. Mcwilliams ◽  
...  
Keyword(s):  
Metabolizable Energy ◽  
Black Duck ◽  
American Black ◽  
American Black Duck
Sign in / Sign up

Export Citation Format

Share Document