Quantifying changes and influences on mottled duck density in Texas

2017 ◽  
Vol 82 (2) ◽  
pp. 374-382
Author(s):  
Beth E. Ross ◽  
David A. Haukos ◽  
Patrick Walther
Keyword(s):  
Mottled Duck

Effects of Saline Water on Growth and Survival of Mottled Duck Ducklings in Louisiana

1991 ◽  
Vol 55 (3) ◽  
pp. 471 ◽  
Author(s):  
Anne M. Moorman ◽  
Thomas E. Moorman ◽  
Guy A. Baldassarre ◽  
David M. Richard
Keyword(s):  
Saline Water ◽  
Growth And Survival ◽  
Mottled Duck

Helminth community structure and pattern in two allopatric populations of a nonmigratory waterfowl species (Anas fulvigula)

1996 ◽  
Vol 74 (7) ◽  
pp. 1253-1259 ◽  
Author(s):  
Alan M. Fedynich ◽  
Danny B. Pence ◽  
Paul N. Gray ◽  
James F. Bergan
Keyword(s):  
Habitat Diversity ◽  
Host Population ◽  
Helminth Species ◽  
Feeding Guilds ◽  
Feeding Guild ◽  
Component Community ◽  
Recurrent Group ◽  
Mottled Duck ◽  
Anas Fulvigula ◽  
Group Members

Helminth communities of mottled ducks (Anas fulvigula) from Florida and Texas were species rich and diverse. The helminth component community in the mottled duck population from Texas contained more species than were found in the Florida host population. However, infracommunities of birds from Florida and Texas contained 9.5 ± 0.7 (mean ± SE) and 9.3 + 0.7 species, respectively. Similarity indices indicated less commonality of helminth species between the 2 host populations; 23 of the 42 species found across the 2 populations co-occurred. Eight helminth species from each host population were recurrent group or associate members; however, only 3 species (Amidostomum acutum, Capillaria contorta, and Tetrameres spp.) maintained group membership across both host populations. Maritrema paracadiae and Psilochasmus oxyurus were absent in birds from Florida but were recurrent group members in the host population from Texas. Only 2 recurrent group members (A. acutum and Epomidiostomum uncinatum) in birds from Florida were members of the same feeding guild and shared the same microhabitat. Three distinct feeding guilds, each containing 2 species, were found in birds from Texas. Results suggest that habitat diversity of the host plays an important part in determining species richness; however, important helminth species in both mottled duck populations are those commonly found in other Anatini from North America.

scholarly journals Projected impact of sea-level rise and urbanization on mottled duck (Anas fulvigula) habitat along the Gulf Coast of Louisiana and Texas through 2100

2021 ◽  
Vol 132 ◽  
pp. 108276
Author(s):  
J.A. Moon ◽  
S.E. Lehnen ◽  
K.L. Metzger ◽  
M.A. Squires ◽  
M.G. Brasher ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Gulf Coast ◽  
Mottled Duck ◽  
Anas Fulvigula

scholarly journals Microsatellite Polymorphism and Genetic Structure of Florida Mottled Duck Populations

The Condor ◽  
2002 ◽  
Vol 104 (2) ◽  
pp. 424-431 ◽  
Author(s):  
Christen L. Williams ◽  
Richard C. Brust ◽  
Olin E. Rhodes Jr
Keyword(s):  
Genetic Structure ◽  
Genetic Differentiation ◽  
Habitat Loss ◽  
Microsatellite Loci ◽  
Nuclear Dna ◽  
Gene Frequencies ◽  
Limited Distribution ◽  
Mottled Duck ◽  
Anas Fulvigula ◽  
High Level

Abstract Little is understood concerning the effects regional isolation and habitat loss have had upon the genetic structure of Mottled Ducks (Anas fulvigula), a nonmigratory waterfowl species with a limited distribution. Our objective was to identify nuclear DNA-based markers for Mottled Ducks and determine levels of subdivision among populations in Florida. We screened 13 microsatellite primer pairs and identified six microsatellite loci that were variable in Mottled Ducks. These markers revealed a low level of genetic differentiation and a high level of genetic exchange among four Mottled Duck subpopulations within Florida. Over all populations, single-locus expected heterozygosities over the six loci surveyed ranged from 0.13–0.85. There were no significant differences in gene frequencies among the populations examined, and the Fst over 5 biparental loci was not different from zero. Our analysis of the Florida Mottled Duck population indicated high levels of heterozygosity and no evidence of genetic subdivision among breeding units. Polimorfismo en Microsatélites y Estructura Genética en Poblaciones de Anas fulvigula Resumen. Se tiene escaso conocimiento acerca de los efectos del aislamiento regional y de la pérdida de hábitat sobre la estructura genética de poblaciones de Anas fulvigula, un ave acuática no migratoria de distribución restringida. Nuestro objetivo fue identificar marcadores genéticos de ADN para A. fulvigula y determinar los niveles de subdivisión entre poblaciones en Florida. Examinamos 13 pares de iniciadores (i.e., primers) para microsatélites e identificamos seis loci que fueron variables en A. fulvigula. Estos marcadores revelaron un bajo nivel de diferenciación genética y un alto grado de intercambio genético entre cuatro subpoblaciones de A. fulvigula en Florida. Para todas las poblaciones, la heterocigocidad esperada en un locus varió entre 0.13–0.85 para los seis loci examinados. No hubo diferencias significativas en las frecuencias génicas entre las subpoblaciones examinadas, y el valor de Fst para los 5 loci biparentales no fue diferente de cero. Nuestros análisis de las poblaciones de A. fulvigula de Florida indicaron altos niveles de heterocigocidad y no mostraron evidencia de subdivisión genética entre las unidades reproductivas.

Mottled Duck (Anas fulvigula)

1994 ◽  
Author(s):  
T. E. Moorman ◽  
P. N. Gray
Keyword(s):  
Mottled Duck ◽  
Anas Fulvigula

A Note on the Mottled Duck

The Auk ◽  
1916 ◽  
Vol 33 (4) ◽  
pp. 432-433
Author(s):  
J. C. Phillips
Keyword(s):  
Mottled Duck

Variation in Survival and Harvest Rates in Florida Mottled Duck

2020 ◽  
Vol 84 (8) ◽  
pp. 1515-1526
Author(s):  
Ronald R. Bielefeld ◽  
Pamela R. Garrettson ◽  
Joshua L. Dooley
Keyword(s):  
Mottled Duck

Population Dynamics and Status of the Mottled Duck in Florida

1984 ◽  
Vol 48 (4) ◽  
pp. 1137 ◽  
Author(s):  
Fred A. Johnson ◽  
Frank Montalbano ◽  
Tommy C. Hines
Keyword(s):  
Population Dynamics ◽  
Mottled Duck

Is it a mottled duck? The key is in the feathers

2016 ◽  
Vol 40 (3) ◽  
pp. 446-455 ◽  
Author(s):  
Ronald R. Bielefeld ◽  
Andrew Engilis ◽  
Jamie C. Feddersen ◽  
John M. Eadie ◽  
Michael D. Tringali ◽  
...  
Keyword(s):  
Mottled Duck

Fifty-nine microsatellite markers for hybrid classification studies involving endemic Florida Mottled Duck (Anas fulvigula fulvigula) and invasive Mallards (A. platyrhynchos)

2012 ◽  
Vol 4 (3) ◽  
pp. 681-687 ◽  
Author(s):  
Seifu Seyoum ◽  
Michael D. Tringali ◽  
Ronald R. Bielefeld ◽  
Jamie C. Feddersen ◽  
Richard J. Benedict ◽  
...  
Keyword(s):  
Microsatellite Markers ◽  
Mottled Duck ◽  
Anas Fulvigula ◽  
Hybrid Classification
Sign in / Sign up

Export Citation Format

Share Document