Periodicity of Growth in Ungulates as Shown by Deer of the Genus Odocoileus

Wood, A. J.; Cowan, I. McT.; Nordan, H. C.

doi:10.1139/z62-053

Cited by 106 publications

(30 citation statements)

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“…Voluntary restrictions in feed intake also may have influenced winter weight loss. This phenomenon has been demonstrated in captive caribou (Rangifer tarandus groenlandicus) (McEwan & Whitehead, 1970) and in white-tailed deer and mule deer (Odocoileus hemionus) (Silver et al, 1969;Wood et al, 1962), despite availability of adequate feed. However this has not yet been demonstrated in wapiti.…”

Section: Discussionmentioning

confidence: 96%

Weight dynamics of wapiti in the boreal forest

Frylestam¹

1981

Acta Theriol.

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Section: Discussionmentioning

confidence: 96%

Weight dynamics of wapiti in the boreal forest

Frylestam¹

1981

Acta Theriol.

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“…They reach sexual maturity between the age of 1.5 and 2.5 years and have a non-monotonic pattern of weight change (Figure 2) with prepubertal growth during the first half year of life and following seasonal oscillations with an increasing year-average weight (Wood et al, 1962). The mean yearly mass increased in males after sexual maturity throughout the period of observation (1600 days) performed on several species of deer (Wood et al, 1962). The indeterminate type of growth in male deer can be attributed to competition, here, larger mass is advantageous.…”

Section: Class Crustaceamentioning

confidence: 99%

“…Measuring growth in deer is complicated because the typical linear measures are difficult to undertake on living animals and weight may not be a good proxy to growth. The seasonal weight changes are largely due to the accumulation and disappearance of adipose tissue and annual increment in lean body mass (assumed to be represented by the lower weight limiting curve) is relatively small after puberty is reached (Wood et al, 1962). The predicted "terminal mature weight" (the maximum asymptotic weight) is delayed or never achieved.…”

Section: Class Crustaceamentioning

confidence: 99%

Trajectories and models of individual growth

Karkach¹

2006

DemRes

134

104

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It has long been recognized that the patterns of growth play an important role in the evolution of age trajectories of fertility and mortality (Williams, 1957). Life history studies would benefit from a better understanding of strategies and mechanisms of growth, but still no comparative research on individual growth strategies has been conducted.Growth patterns and methods have been shaped by evolution and a great variety of them are observed. Two distinct patterns -determinate and indeterminate growth -are of a special interest for these studies since they present qualitatively different outcomes of evolution. We attempt to draw together studies covering growth in plant and animal species across a wide range of phyla focusing primarily on the noted qualitative features. We also review mathematical descriptions of growth, namely empirical growth curves and growth models, and discuss the directions of future research.1 Email: karkach@demogr.mpg.de http://www.demographic-research.org 347Karkach: Trajectories and models of individual growth IntroductionThe ontogenetic growth of an individual is intuitively understood to be an increase in the size of the whole organism or parts of it with age. But the very "natural" notion of growth is, in fact, very difficult to define. Living organisms are complex systems, consisting of parts that often grow at different rates and displaying different patterns. Some parts of the body may grow faster than others, some may stop growing at a certain stage while others continue to grow, and organs may grow "on demand" during regeneration. The cells of an organ may divide continuously throughout an organism's life, replacing aging cells and producing cell turn-over in the tissues; still the body size may remain constant. Growth is coordinated by a program of ontogenetic development that allows for variability in the development rates and sizes in order to adapt to environmental conditions. Size and growth rates are subject to evolutionary optimization and constraints. On the one hand, larger size usually leads to greater mating success, greater fertility, lower vulnerability to environmental hazards, and thus lower mortality. On the other, growth needs resources, and trades-off with other traits.Studies on growth and maintenance shed light on the problem of senescence. Most organisms experience cell turn-over in most tissues. Some organisms (e.g. hydra) apparently escape senescence due to a quick turn-over of cells (Martínez, 1998).Growth and body size are strongly related to other traits and fitness. Research on extant species showed a strong statistical relationship between body mass and a remarkable variety of biological features (Smith, 1996). Measures of growthGrowth as an increment in size can be measured in many different ways, each having advantages and drawbacks. An increase in mass or volume often can be measured easily, but may be only indirectly related to growth as increase in biomass. Organisms may change in content of water or fat, in mass and volume, but this i...

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“…A fogakban található növekedési vonalak életkorbecslési alkalmazásáról elsőként EIDMANN (1932) ROBINETTE et al (1957), WOOD (1962), BRIAN (1966), RANSOM (1966), GILBERT (1966), SOHN (1968), ERICKSON & SELIGER (1969), LOCKARD (1972), TOMAS & BANDY (1973), KAY (1974) LOWE (1967), DOUGLAS (1970), KLEIN et al (1981), BROWN & CHAPMAN (1991), KIERDOF & BERCHER (1997) és MAROSÁN (1999, 2001a publikálták tapasztalatikat.…”

Section: A Fogak Növekedési Vonalainak Vizsgálataunclassified

Az őz [capreolus capreolus (l.) 1758] életkorbecslési módszereinek vizsgálata

Marosán¹

2014

Magyar Apróvad Közlemények

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Age can be precisely estimated from the number of cement zones in stocks of roe deer living in Hungarian habitats. Growth zones of the cement stock can be assessed also on dental slides; however, it is more exact with histotechnical methods, first of all with the Goldner trichromium, Heidenhain azan and Giemsa dying.In the case of roe deer, age estimation is not applicable with slide techniques on the basis of secondary dentin, since the prepared dental slides presenting the secondary dentin did not show any sing of age-related layers in the sample of analysis. On the other hand histological examinations can be successfully applied just like in the case of the cementum. Age estimation by tooth wear yields very close, statistically verifiable correlation with the age estimated form cement zones. Crown height of the molars exhibit strong, statistically proven relationship with the age estimated from cement zones, except the P 1 teeth. In all the samples the strongest relation appears for the total average of molars. Highly close relation can be observed in the case of M 1 , M 2 and M 3 teeth. Length parameters of I 1 teeth indicate a statistically verifiable relation with the age estimated from cement zones. The angle of I 1 teeth and the age estimated from cementum shows no proper relation, consequently this parameter is not indicative of age.Dry matter content of the lens in bucks is intensive up to the first year of age, becoming statistically negligible in the succeeding years. On the other hand, lens weight of does keeps growing up to approximately 5 years of age.According to RAJNIK (1977) there is a close, statistically verifiable relation between the estimated ages of does coming from cement zones and from the nasal septum. Examining the nasal septum of does gives appropriate information on age.On-site age estimation of live roe-deer is an acceptable procedure complying with practical requirements, but the professional experience, training and precision of the person performing the estimation fundamentally determines the reliability of the method.Considering that in a given case trophy judgement may result in imposing sanctions against a hunter or a person entitled to hunting, the accuracy of this method is not acceptable. According to our study the age estimated from cement zones was only in an average agreement of 37.6% with age estimation coming from trophy judgement.KULCSSZAVAK: őz, Capreolus capreolus, kor-megállapítási módszerek KEYWORDS: Roe Deer, Capreolus capreolus, age estimation methods, BEVEZETÉSA természetközeli vadállomány szabályozás, okszerű vadgazdálkodás kivitelezésekor az öko-lógiai és ökonómiai szempontokat is kielégítő vadállomány kialakításához, a vadgazdálkodási tervezéshez, a hivatalos trófeabírálathoz a korbecslési módszerek ismerete szükséges.Magyarországon az ejtett trófeás nagyvad, így az őzbak ejtésének szakszerűségét a vadászati hatóság állapítja meg a hivatalos trófeabírálat során. Ezt a munkát az 1996. évi LV. törvény a vad védelméről, a vadgazdálkodásról, valamint a vadászat...

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Periodicity of Growth in Ungulates as Shown by Deer of the Genus Odocoileus

Cited by 106 publications

References 1 publication

Weight dynamics of wapiti in the boreal forest

Weight dynamics of wapiti in the boreal forest

Trajectories and models of individual growth

Az őz [capreolus capreolus (l.) 1758] életkorbecslési módszereinek vizsgálata

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