Mobility of Bobwhite Quail in Southwestern Texas

Lehmann, Valgene W.

doi:10.2307/3796073

Cited by 22 publications

(8 citation statements)

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“…They sustain high rates of annual mortality (Brennan et al 2014), and predators represent a primary source of this mortality (Rollins and Carroll 2001). Woody cover provides protection from predators and inclement weather (Lehmann 1984); thus, bobwhites generally are found in proximity to woody cover (Stoddard 1931, Lehmann 1946, Rice et al 1993). This behavioral response to predation risk suggests that the area in the immediate vicinity of a bobwhite (organism‐centered point) should possess a greater amount of woody cover than the area contained within its home range because the home range would include all the points used by the bobwhites and all points not used (or less used) because they are more open.…”

Section: Woody‐cover Requirementsmentioning

confidence: 99%

Ecological Discord and the Importance of Scale in Scientific Inquiry

Hernández

2020

J Wildl Manag

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Scale is widely recognized today as an important concept in ecology because the scale of investigation determines the patterns and processes that can be observed. Ecological investigations can produce different outcomes depending on the scale at which observations are made, and ecological disagreements have occurred simply because investigators addressed the same question using different scales. Here I draw on quail research to illustrate the importance of scale in ecological studies and how lack of scale consideration can lead to discord. I use northern bobwhite (Colinus virginianus) as the focal species and discuss 2 areas of investigation (woody-cover requirements and influence of rainfall) that are characterized by confusion and disagreement but where consideration of scale brings clarity. In the process, I discover 2 formerly unrecognized patterns: northern bobwhite use of woody cover is inversely related with spatial extent of observation, and the influence of rainfall on northern bobwhite abundance decreases with decreasing spatial extent. In both cases, consideration of scale clarifies muddled knowledge and creates a unified framework for management. Future ecological investigations should formulate research questions within a scale framework, provide an explicit statement of scale in methods, and interpret findings within a scale context to help advance wildlife science and management.

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Section: Woody‐cover Requirementsmentioning

confidence: 99%

Ecological Discord and the Importance of Scale in Scientific Inquiry

Hernández

2020

J Wildl Manag

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“…Hunting northern bobwhites is a traditional pastime and generates economic benefit, such as funding conservation initiatives and programs (Burger et al , Crosby et al ). Northern bobwhite hunters help fund fundamental studies on bobwhite life history, covey movements, and habitat management (Stoddard , Lehmann , Rosene ). Furthermore, hunters’ passion and concern for northern bobwhites led to the creation of nongovernment organizations, such as the National Bobwhite Conservation Initiative and the Quail Coalition (Brennan ).…”

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confidence: 99%

Response of northern bobwhites fed single doses of gossypol

et al. 2018

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Cottonseed products have been used as a feed supplement for ruminant livestock and white‐tailed deer (Odocoileus virginianus). Gossypol, a secondary plant metabolite found in cotton (Gossypium spp.), is known to be toxic to a variety of animals, specifically monogastric mammals and birds. However, there are no published data regarding the effects of gossypol in northern bobwhites (Colinus virginianus). Our goal was to determine whether ingestion of gossypol presents a threat to northern bobwhite survival and reproduction. We performed this study at Tarleton State University Northern Bobwhite Research Center (Stephenville, TX, USA) during March and April 2016, using the Environmental Protection Agency's 850.2100 Guideline: Avian Acute Oral Toxicity Test. We administered one‐time doses of refined gossypol to northern bobwhites at 20 mg/kg, 200 mg/kg, 262 mg/kg, 342 mg/kg, 447 mg/kg, 585 mg/kg, 765 mg/kg, and 1,000 mg/kg body weight (BW) and observed them daily throughout a 14‐day period. We measured feed consumption daily and body mass weekly. Birds receiving larger doses (447–1,000 mg/kg BW) consumed less total feed postdosing (55.46 ± 56.46 g, n = 39) and had greater, negative postdosing percent change in mass (−23.02 ± 13.04%, n = 85) compared with control birds and those receiving lower doses (20–342 mg/kg BW). We also examined laying performance and egg quality of birds dosed with 20 mg/kg and 200 mg/kg BW (n = 30 pairs) and the growth rate and percent mortality of second‐generation young produced from these pairs. There was no difference in laying performance, egg quality, the percentage of chicks that hatched, and the growth rate and percent mortality of chicks between the dosing rates. Our results suggest that gossypol can have adverse effects on feed consumption and body mass in northern bobwhites at sufficient doses; however, a one‐time acute dose of gossypol up to 200 mg/kg BW does not pose any negative reproductive effects. © 2018 The Wildlife Society.

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“…Terhune et al () reported 8% of radiomarked bobwhite may have dispersed off the study site and Townsend et al () found dispersing bobwhite (those that moved >2 km) had a greater survival rate than non‐dispersers (those that moved <1 km). Although rare, relatively long distance movements by bobwhite have been documented (>5 km: Duck , Lehmann ; >10 km: Townsend et al ).…”

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confidence: 99%

“…Movement patterns of juvenile and adult bobwhite from radiotelemetry and band returns indicate bobwhite rarely move long distances. Home ranges from radiotelemetry were usually 2.5 km 2 (Lehmann 1946, Murphy and Baskett 1952, Lohr et al 2011) and most bobwhite rarely moved >2 km (Kabat and Thompson 1963, Roseberry and Klimstra 1984, Fies et al 2002, Townsend et al 2003, Lohr et al 2011. Capture-recapture studies conducted on sites of 388-4,047 ha (Lehmann 1946, Murphy and Baskett 1952, Kabat and Thompson 1963 found that most birds moved only short distances, although 42-79% of birds were never recovered after initial banding and thus fates and/or movements were unknown.…”

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confidence: 99%

Population genetic structure among bobwhite in an agriculturally modified landscape

et al. 2013

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Northern bobwhite (Colinus virginianus) depend on ephemeral habitats, which are constantly changing in quality and spatial structure. Given recent changes in agricultural practices in the Midwest, habitat patches on the landscape are undoubtedly occurring in new configurations, presenting new challenges to bobwhite. Yet, little is known about dispersal capabilities of bobwhite in Illinois where widespread change in land use has coincided with population declines. Since effective dispersal results in gene flow, we investigated the genetic population structure of bobwhite in Illinois using 11 DNA microsatellite loci. We analyzed bobwhite collected by hunters in southern and central counties of Illinois at 6 sampling areas separated by 27–276 km. We found a significant but low amount of genetic structure (FST = 0.009). We used multiple genetic analysis methods (FST, PCA, STRUCTURE, and Mantel tests) to gain greater insights into genetic structure. Patterns of differentiation did not correspond to those expected from an isolation‐by‐distance pattern. Genetic introgression from stock source birds was not strongly indicated. The low amount of population structure detected may be an early indication of genetic drift occurring due to recent landscape changes that may be isolating bobwhite subpopulations. Future sampling when more time has elapsed will help resolve where these subpopulations lie on the continuum between complete isolation and panmixia. © 2013 The Wildlife Society.

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Mobility of Bobwhite Quail in Southwestern Texas

Cited by 22 publications

References 1 publication

Ecological Discord and the Importance of Scale in Scientific Inquiry

Ecological Discord and the Importance of Scale in Scientific Inquiry

Response of northern bobwhites fed single doses of gossypol

Population genetic structure among bobwhite in an agriculturally modified landscape

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