Prediction of California Quail Populations from Weather Data

Francis, William J.

doi:10.2307/1366202

Cited by 8 publications

(5 citation statements)

References 2 publications

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“…In our study, we had 7 ranches report ≥7:1 age ratio; other studies have regarded age ratios above 5.72:1 juveniles per adult as unlikely (Kuvlesky and Guthery 1998). California quail also exhibit a strong relationship (slope = 0.43, r 2 = 0.64) between spring rains and age ratios (Francis 1967), similar to the relationship documented by Kiel (Botsford et al 1988). Raitt and Ohmart (1968) documented not only a wide range of fall age ratios (2.4–6.5 juveniles per adult) but also found a strong correlation between summer rainfall and age ratio in the Sonoran Desert ( r 2 = 0.98).…”

Section: Discussionsupporting

confidence: 80%

“…In years with below‐average rainfall, mountain quail ( Oreortyx pictus ) forgo breeding attempts completely (Gutiérrez and Delehanty 1999). Francis (1967) documented that soil moisture and September–April precipitation were 2 of the top 3 influential variables in predicting California quail ( Callipepla california ) breeding success. In Arizona, sharp yearly differences in rainfall coincide with dramatic changes in population levels of Gambel's quail (Swank and Gallizioli 1954).…”

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confidence: 99%

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Increased antioxidant capacity in tomato by ectopic expression of the strawberry D‐galacturonate reductase gene

Amaya

Osorio

Martínez-Ferri

et al. 2014

Biotechnology Journal

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Increasing L-ascorbic acid (AsA, vitamin C) content in fruits is a common goal in current breeding programs due to its beneficial effect on human health. Attempts to increase AsA content by genetic engineering have resulted in variable success likely due to AsA's complex regulation. Here, we report the effect of ectopically expressing in tomato the D-galacturonate reductase (FaGalUR) gene from strawberry, involved in AsA biosynthesis, either under the control of the constitutive 35S or the tomato fruit-specific polygalucturonase (PG) promoters. Although transgenic lines showed a moderate increase on AsA content, complex changes in metabolites were found in transgenic fruits. Metabolomic analyses of ripe fruits identified a decrease in citrate, glutamate, asparagine, glucose, and fructose, accompanied by an increase of sucrose, galactinol, and chlorogenic acid. Significant metabolic changes also occurred in leaves of 35S-FaGalUR lines, which showed higher non-photochemical fluorescence quenching (NPQ), indicative of a higher constitutive photo-protective capacity. Overall, overexpression of FaGalUR increased total antioxidant capacity in fruits and the results suggest a tight control of AsA content, probably linked to a complex regulation of cellular redox state and metabolic adjustment.

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Section: Discussionsupporting

confidence: 80%

mentioning

confidence: 99%

Increased antioxidant capacity in tomato by ectopic expression of the strawberry D‐galacturonate reductase gene

Amaya

Osorio

Martínez-Ferri

et al. 2014

Biotechnology Journal

View full text Add to dashboard Cite

show abstract

“…In our study, we had 7 ranches report !7:1 age ratio; other studies have regarded age ratios above 5.72:1 juveniles per adult as unlikely (Kuvlesky and Guthery 1998). California quail also exhibit a strong relationship (slope ¼ 0.43, r 2 ¼ 0.64) between spring rains and age ratios (Francis 1967), similar to the relationship documented by Kiel (Botsford et al 1988). Raitt and Ohmart (1968) documented not only a wide range of fall age ratios (2.4-6.5 juveniles per adult) but also found a strong correlation between summer rainfall and age ratio in the Sonoran Desert (r 2 ¼ 0.98).…”

Section: Discussionsupporting

confidence: 79%

“…In years with below-average rainfall, mountain quail (Oreortyx pictus) forgo breeding attempts completely (Gutiérrez and Delehanty 1999). Francis (1967) documented that soil moisture and SeptemberApril precipitation were 2 of the top 3 influential variables in predicting California quail (Callipepla california) breeding success. In Arizona, sharp yearly differences in rainfall coincide with dramatic changes in population levels of Gambel's quail (Swank and Gallizioli 1954).…”

mentioning

confidence: 99%

Impacts of weather on northern bobwhite sex ratios, body mass, and annual production in South Texas

Tri¹,

Sands²,

Buelow³

et al. 2012

J Wildl Manag

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A landscape-scale assessment of how bobwhite productivity varies in relation to weather does not exist for northern bobwhite (Colinus virginianus). We collected age and sex ratio and body mass data from hunter-harvested bobwhites in 16 counties of South Texas (n ¼ 72,797 bobwhites) during 2001-2009 hunting seasons. We evaluated annual bobwhite production (juvenile:adult age ratios) as a function of cumulative April-August rainfall using National Oceanic and Atmospheric Administration (NOAA) weather station data from Falfurrias and Hebbronville, Texas. We observed minimal among-year change in percent males harvested (51.0-54.5% male) and mean mass (156-160 g) of bobwhites across South Texas. We found no relationship between percent male or body mass and weather. We documented a positive, linear relationship between cumulative April-August rainfall and bobwhite age ratios (r 2 ¼ 0.94); we also documented a negative, linear relationship between summer (Jun-Aug) mean maximum daily temperature and bobwhite age ratios (r 2 ¼ 0.38). Our results suggest that rainfall is a landscape-scale indicator of annual bobwhite production in South Texas and can thus be used to manage annual expectations of quail hunters prior to the hunting season. ß 2012 The Wildlife Society.

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“…Though male incubation in the Northern Bobwhite {Colinus virginianus) contributes to female abandonment and double brooding (Curtis et al 1993, Suchy and Munkel 1993, Burger et al 1995, it is unknown in Gambel's Quail. In the California Quail, a related species that occasionally double broods (Francis 1965), male brood patches are rare and may develop only after the death of a mate (Calkins et al 1999). Gambel's Quail at Bosque del Apache exhibited both biparental and uniparental care.…”

Section: Discussionmentioning

confidence: 99%

A Field Study of Ornaments, Body Size, and Mating Behavior of the Gambel's Quail

Hagelin¹

2003

The Wilson Bulletin

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A FIELD STUDY OF ORNAMENTS, BODY SIZE, AND MATING BEHAVIOR OF THE GAMBEL'S QUAIL JULIE C. HAGELIN' 2ABSTRACT. -Male Gambel's Quail {Callipepla garnbelii) have strikingly ornate plumage. Yet, captive experiments indicate that removing multiple ornaments does not necessarily alter patterns of female mate choice or male-male competition. To test these unexpected results, I observed a wild population of banded quail for three seasons to determine ornamental and body size traits associated with pairing date and winners of male contests. I also documented mating behaviors (e.g., pairing date, mate fidelity, brood size). Consistent with captive studies, male mass, rather than ornate plumage, was the primary feature related to winners of male contests and early pairing. Heavier males paired earlier, regardless of age, but did not exhibit significantly larger ornaments. Adults of both sexes were heavier and paired earlier than yearlings. Early pairing also correlated positively with brood size, suggesting that heavy, early nesting birds experienced greater fitness. Mating behaviors were flexible across seasons. Social monogamy decreased from 83% in 1996 to 30% in 1998, while polygamy (sequential, long term pairings) increased, particularly among yearlings and adult males. Adult females were equally likely to exhibit social monogamy or polygamy each season. They also exhibited the highest frequency of early pairing and the greatest keel scores (a general measure of condition), suggesting their capacity for breeding was high. At least two adult females abandoned their first mate after hatching and re-paired, in an apparent attempt to double brood.

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Prediction of California Quail Populations from Weather Data

Cited by 8 publications

References 2 publications

Increased antioxidant capacity in tomato by ectopic expression of the strawberry D‐galacturonate reductase gene

Increased antioxidant capacity in tomato by ectopic expression of the strawberry D‐galacturonate reductase gene

Impacts of weather on northern bobwhite sex ratios, body mass, and annual production in South Texas

A Field Study of Ornaments, Body Size, and Mating Behavior of the Gambel's Quail

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