2 edition of Ecological aspects of growth, reproduction and mortality in female red deer. found in the catalog.
Ecological aspects of growth, reproduction and mortality in female red deer.
S. D. Albon
Thesis (Ph.D.) - University of East Anglia, School of Environmental Sciences 1983.
Male reproductive maturity is less subject to environmental and ecological factors, and does not follow the secular trend that female puberty does. In adults, fecundity is determined by the biological processes of reproduction. Six species of deer exist in the wild in the UK: red and roe deer are the only native species; fallow deer are long established; and sika, muntjac, and Chinese water deer were introduced in the past years. These six species differ in their geographic distribution1, abundance, population growth rate2, behaviour, and impacts (Box 1).
wildlife publication awards The Society’s Wildlife Publication Awards recognize excellence in scientific literature of wildlife biology and management issued within the last three years. The publications selected are characterized by originality of research or thought and a high scholastic standard in the manner of presentation. Abstract. From to , we conducted an ecological study of thamin (Cervus eldi thamin) at Chatthin Wildlife Sanctuary in central Myanmar; we maintained records on deer sightings and radiotracked 11 adult male and 8 adult female on sightings, a adult male: female ratio and fawn: adult female ratio were observed.
AGE-RELATED REPRODUCTIVE AND MORTALITY RATES cycle used to identify natality and mortality rates. The reproductive potential of a species is genetically controlled, as ruminants characteristically have two young--white-tailed deer, for example--while female elk . We are pleased to share a selection of top and trending articles published in BioOne journals that cover all areas of the biological, environmental, and ecological sciences. Featured journals include the South American Journal of Herpetology, Natural Areas Journal, Ursus, and more.
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This paper considers the growth, reproduction and mortality of enclosed ( years) red deer, Cervus elaphus L. (n= –), in Lyme Park, Cheshire, England. The Park consists of woodland ( ha), parkland ( ha) and moorland ( ha) habitats.
It was privately owned until Author: C. Goldspink. Red Deer: Behavior and Ecology of Two Sexes is the most extensive study yet available of reproduction in wild vertebrate. The authors synthesize data collected over ten years on a population of individually recognizable red deer, usually regarded as conspecific with the American elk.5/5(1).
In Norway, for example, abundance of female, but not male, red deer in two populations declined one year after positive NAO winters, whereas in a third population male, but not female, abundance declined after positive NAO by: Using data from female red deer (Cervus elaphus L.) from three harvested populations, we tested whether red deer maturity changed from to In these populations, density has increased markedly over the time period reducing body mass of deer, which has decreased the proportion of females maturing as by: Ecological impacts of deer overabundance on temperate and boreal forests Article (PDF Available) in Annual Review of Ecology Evolution and Systematics May with 1, Reads.
Factors affecting reproduction and population growth in a the red deer stag (Cervus elaphus L.). we conducted a study to investigate survival and cause-specific mortality of male and. A red deer’s diet mainly consists of tree shoots, grasses, sedges and shrubs.
In the autumn months, fruit and seeds are also important. Red deer are ruminants, characterised by a four-chambered stomach. They have a feed-ruminate cycle of between five and nine hours, with peak times of.
In order to understand this work it is necessary to consider a little more why fluctuations in population size are comparatively small in red deer. The fluctuations are small because density-dependence stabilizes population numbers: births almost perfectly balance deaths and both fertility and mortality rates respond in a similar way to any change in population numbers.
Average duration of the normal oestrous cycle ranges from 17 days in sambar deer and axis deer, 18–20 days in red deer and Eld's deer, 21–23 days in fallow deer, and 24–27 days in moose and black-tailed deer (Odocoileus hemionus).
The mean duration of the oestrous cycle tends to increase progressively during the breeding season in most of these species. Some variations on a reproductive theme • Seasonality, hibernation, migration, etc., can constrain timing of certain reproductive events, especially mating and lactation • Lactation is period of highest energetic demand on female • Female must be able to provide E for offspring, but also care for her own survival and condition.
-Male AND Female both DIE shortly after reproducing for the first time b. BAMBOO-Establishes itself in disturbed habitat -Spreads via vegetative growth until habitat is densely packed with bamboo shots -Synchronous reproduction: every individual produces flowers and makes seeds in same year c.
Agaves: arid climate-sparse rainfall. Female deer generally give birth away from the herd. The mother licks the fawn clean of birth fluid.
After a week or so, when it is strong enough, the fawn will join the herd. Females occasionally have twins, and a deer giving birth to triplets is not unheard of, but a single fawn is more likely. ecological factors affecting growth rates of juveniles before or immediately following birth can have pronounced consequences for their subsequent growth, survival and breeding success [1–3].
In Scottish red deer Cervus elaphus, the mean birth weight of calves rises by. Anatomy of the female reproductive tract. The main characteristics of the pampas deer reproductive tract have not been previously described.
In this section we present the main anatomical characteristics of tracts obtained from six dead females (O. bezoarticus arerunguaensis).Three of them were prepubertal; the other three were adults that died during the spring at the ECFA, Uruguay.
Mortality: when plants die 4. Each individual weed species has a unique life history which is the evolutionary consequence of a trade-offs between these life history characteristics; each component above affects reproduction and survival. The timing of reproduction tradeoffs: 1.
Between reproduction and growth-survival 2. The growth rate of a population is determined by net reproductive rate, the average number of female offspring that each female produces over the course of her lifetime.
We investigated cohort differences in the lifetime breeding success and survival of male red deer Cervus elaphus L. in an increasing population on the Isle of Rum, Scotland. There were significant differences in survival through different stages of the life span between 15 cohorts of males, ranging between: –, calf survival through first winter; –, yearling survival; Efforts to test sex ratio theory have focused mostly on females.
However, when males possess traits that could enhance the reproductive success of sons, males would also benefit from the manipulation of the offspring sex ratio. We tested the prediction that more-fertile red deer males produce more sons.
Our findings reveal that male fertility is positively related to the proportion of male. Nutrition in the Reproduction of Farm Animals. Robinson (a1) If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about sending content to Dropbox. Effect of winter nutrition of young farmed red deer on their subsequent growth at pasture. As management, goals, and free-ranging populations change over time and landscapes, updated knowledge of reproductive characteristics are needed to inform responsible management practices.
We estimated reproductive characteristics of female white-tailed deer in Illinois, including pregnancy rate, litter size, fetal growth and fetal sex ratio. b Adult female probability of mortality (average and 95% CI) from hunting and other causes according to their reproductive status (solitary, n = .Adam C.L, Atkinson T.
Effect of feeding melatonin to red deer (Cervus elaphus) on the onset of the breeding season. Journal of Reproduction and Fertility.
Charlton B, Reby D, McComb,K. Female Red Deer Prefer the Roars of Larger Males. Biol Lett August 22; 3(4): –However, while we talk about average gestation length, in reality it is highly variable for red can range from to days for hinds carrying red deer foetuses.
Recent research has shown that that the level of nutrition a hind receives over the last third of pregnancy, the period when the foetus is at is fastest growth rate.