Changes in White-Winged Dove Reproduction in Southern Texas, 1954-93

Factors limiting white-winged dove (Zenaida asiatica) reproduction in the Lower Rio Grande Valley of Texas are poorly understood. We documented long-term trends in egg density (eggs laid/ha), young density (hatchlings/ha), fledgling density, egg success, and fledging success in brush and citrus habi...

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Veröffentlicht in:	The Journal of wildlife management 1996-04, Vol.60 (2), p.298-301
Hauptverfasser:	Hayslette, Steven E., Tacha, Thomas C., Waggerman, Gary L.
Format:	Artikel
Sprache:	eng
Schlagworte:	Animal nesting Animal populations Animal reproduction Animal, plant and microbial ecology Applied ecology Biological and medical sciences Birds Breeding Breeding seasons Conservation, protection and management of environment and wildlife Doves Eggs Fall lines Fundamental and applied biological sciences. Psychology Habitats Parks, reserves, wildlife conservation. Endangered species: population survey and restocking Pesticides Weather Wildlife habitats Zenaida asiatica
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Zusammenfassung:	Factors limiting white-winged dove (Zenaida asiatica) reproduction in the Lower Rio Grande Valley of Texas are poorly understood. We documented long-term trends in egg density (eggs laid/ha), young density (hatchlings/ha), fledgling density, egg success, and fledging success in brush and citrus habitats with data collected 1954-93. All density estimates in citrus, and fledging success in brush and citrus, showed linear declines (P ≤ 0.04) during 1954-93. Egg density in brush did not change (P = 0.91) 1954-68, but young and fledgling densities showed quadratic trends during the same period. All densities in brush showed linear declines (P ≤ 0.005) from 1969 through 1993. We evaluated 6 factors hypothesized as limiting dove reproduction; current limiting factors may include overhunting and effects of certain pesticides.
ISSN:	0022-541X 1937-2817
DOI:	10.2307/3802227