Physical and Reproductive Characteristics of a Supplementally-Fed White-Tailed Deer Herd

Ozoga, John J.; Verme, Louis J.

doi:10.2307/3808640

Cited by 124 publications

(90 citation statements)

References 25 publications

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“…1). Observed age effects on CDs are supported by similar studies on other deer populations (Cheatum and Morton 1946, Nixon 1971, Ozoga and Verme 1982Verme and Ullrey 1984). However, Knox et al (1988) found a nonsignificant (p > 0.20) trend toward earlier first estrous cycles in 1.5 versus > 2.5 year old females.…”

Section: Discussionsupporting

confidence: 68%

Frequency distribution of conception dates in a white-tailed deer herd

Novak¹,

Rhodes²,

Smith³

et al. 1991

Acta Theriol.

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. 1991. Conception dates in a whitetailed deer herd. Acta theriol. 36: 131 -140.Conception dates of white-tailed deer, Odocoileus virginianus (Zimmermann, 1780) were estimated for the breeding periods of 1974 -76 and 1984 using fall and winter -spring fetal data. Conception dates estimated from data collected in the fall were biased. This bias resulted in an earlier mean conception date than that based on information which included data from later breeding females. Mean breeding dates differed significantly between female age classes due to delayed conception in fawns which also resulted in a skewed frequency distribution of conception dates. The frequency distribution of conception dates was leptokurtotic, suggesting that the distribution is constrained in time by some factor(s). Conception date estimates did not differ by habitat type but were influenced significantly by period of data collection. Mean breeding date for deer on the Savannah River Site,

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Section: Discussionsupporting

confidence: 68%

Frequency distribution of conception dates in a white-tailed deer herd

Novak¹,

Rhodes²,

Smith³

et al. 1991

Acta Theriol.

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“…Fertility of does from other Chicago metropolitan preserves were comparable to values from rural populations (Figure 2). Fertility rates are related to nutritional status of does, and postnatal survival of fawns is inversely related to population density, presumably because suitable fawning sites become limiting (Ozoga andVenne 1982, Venne 1969). The Bridgeport, Ned Brown, and Des Plaines areas exhibited mean densities ranging from 15-73 deer/km 2 , and physical condition of deer at these sites was relatively poor .…”

Section: Behavior and Autecologymentioning

confidence: 99%

A Comparison of Survey Techniques for Medium- to Large-Sized Mammals in Forested Wetlands

Rockhill¹,

Sollman²,

Powell

et al. 2016

Southeastern Naturalist

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“…Due to initial overbrowsing and subsequent condition decline, deer were supplementally fed ad libitum year-round with a pelleted ration beginning in 1972 and were fed throughout the study period. Following this, deer were documented to be in good physical condition, even during winter months (Ozoga and Verme 1982). Initially (1972Initially ( -1976, no deer were intentionally removed from the enclosure; however, to ensure a stable population, the number of individuals within the enclosure was maintained at approximately 40 individuals with the removal of most fawns and older individuals each year starting in 1977 (Ozoga and Verme 1982).…”

Section: Methodsmentioning

confidence: 99%

“…Following this, deer were documented to be in good physical condition, even during winter months (Ozoga and Verme 1982). Initially (1972Initially ( -1976, no deer were intentionally removed from the enclosure; however, to ensure a stable population, the number of individuals within the enclosure was maintained at approximately 40 individuals with the removal of most fawns and older individuals each year starting in 1977 (Ozoga and Verme 1982). Although some potential bias could result from the removal of such individuals, in a natural population, most mortality would occur among the removed age classes (i.e., young and old individuals).…”

Section: Methodsmentioning

confidence: 99%

Seasonal Variation in Sex Ratios Provides Developmental Advantages in White-tailed Deer, <em>Odocoileus virginianus</em>

Saalfeld

Ditchkoff

Ozoga³

et al. 2007

Can Field Nat

Self Cite

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Since Trivers and Willard first proposed their hypothesis concerning the adaptive advantages of producing a particular offspring sex in relation to maternal condition in 1973, it has been at the forefront of scientific research concerning sex ratios with most subsequent studies focusing on maternal condition as a key contributor to variations in sex ratios. Another factor that could greatly influence sex ratios, although has been only infrequently examined in mammalian species, is birth date. We investigated how birth date influenced offspring sex ratios in White-tailed Deer (Odocoileus virginianus). Since date of birth can greatly influence an individual’s fitness and reproductive success, we suggest that birth date may be an alternative strategy in determining offspring sex ratios. Since it has been shown that the lifetime reproductive fitness of a mother can be increased by producing a particular sex during a particular time, we hypothesized that more male offspring should be born earlier in the season due to their increased reproductive potential from being born at this time. Offspring born earlier will have a head start in development and therefore have greater potential for increased body size and dominance later in life, traits that greatly influence male reproductive success. In this study, we found that maternal condition did not affect offspring sex ratio in a captive population of White-tailed Deer in Michigan; however, birth date did. We found that more males tended to be born during the second and fourth birthing periods, while more females were born during the first, third and fifth periods. In addition, we found that males born earlier in the season had greater mass the following spring than those born later, a trend that was not as dramatic in females. These results lend moderate support to our hypothesis that in White-tailed Deer offspring sex will tend to vary according to timing of birth and relative reproductive advantages gained by a particular sex being born at that time.

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Physical and Reproductive Characteristics of a Supplementally-Fed White-Tailed Deer Herd

Cited by 124 publications

References 25 publications

Frequency distribution of conception dates in a white-tailed deer herd

Frequency distribution of conception dates in a white-tailed deer herd

A Comparison of Survey Techniques for Medium- to Large-Sized Mammals in Forested Wetlands

Seasonal Variation in Sex Ratios Provides Developmental Advantages in White-tailed Deer, <em>Odocoileus virginianus</em>

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