2 edition of Age determination and age-specific reproduction in raccoons in northwestern Oregon found in the catalog.
Age determination and age-specific reproduction in raccoons in northwestern Oregon
Brad C. Fiero
Written in English
|Statement||by Brad C. Fiero.|
|The Physical Object|
|Pagination||, 26 leaves, bound ;|
|Number of Pages||26|
Chapter 4 Part 1 CHAPTER 4 is the proportion of the cohort surviving to age x, and m x is the age-specific female birth rate. weighted by the amount of reproduction of each age class. The value of T can now be used in the expression r = 1nR 0 /T to calculate : Eco Science. Start studying Ch. Learn vocabulary, terms, and more with flashcards, games, and other study tools.
Optimal Reproductive Tactics Eric R. Pianka Natural selection recognizes only one currency: successful offspring. Yet even though all living organisms have presumably been selected to maximize their own lifetime reproductive success, they vary greatly in exact modes of reproduction. Zug, G.R. Age determination of loggerhead sea turtles, Caretta caretta, by incremental growth marks in the skeleton. Smithsonian Contribution to Zoology 38 39 SUMMARY OF RESULTS AND DISCUSSION 40 41 S S U UM MM MA AR RY Y 2.
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Graduate Thesis Or Dissertation Age determination and age-specific reproduction in raccoons in northwestern Oregon Public Deposited. Analytics × Add to Cited by: 1. Age classes derived from tooth eruption and wear methods were consistent with subjective age class placement (Table 1).
Fawns had spotted pelage; the second and third inferior molar. northwestern Oregon. had Age-specific reproduction. in this model should be able to be used to estimate the reproductive state of male raccoons regardless of season and age when just. Mammalogy and wildlife science lost a respected scientist, teacher, and mentor on 29 Decemberwhen B.
Verts died in Corvallis, Oregon, following an infection with Cryptococcus gattii, which followed an year battle with chronic lymphocytic leukemia. He was born to William Trigg and Jeanette Poindexter Verts on 9 April in Nelson, : Leslie N. Carraway. If a predator crops prey of certain ages in preference to others, it may be acting as an agent of selection, causing genetic change in the prey population.
This paper adapts a model of life-history evolution to investigate some selective consequences of several patterns of age-specific predation.
The model allows allocation of resources to reproduction, growth, and maintenance in an age class Cited by: 1Three hypotheses have been proposed to explain age‐structured patterns of reproductive investment and somatic investment: residual reproductive value, senescence and.
Natal conditions and senescence are two major factors shaping life‐history traits of wild animals. However, such factors have rarely been investigated together, and it remains largely unknown whet Cited by: A) Estimated age-specific fecundity (fetuses per doe) of free-ranging, adult white-tailed deer ( years old, n ¼ ) livecaptured during January-Marchin north-central.
Management strategies of wildlife species must pay due regard to density dependent changes in vital rates. Knowledge of density dependent relationships is sparse for most species but such knowledge ought to inform adaptive management. Using data from a large-scale, 6 years of control effort of the invasive non-native American mink (Neovison vison) in Scotland, we analysed density Cited by: Abstract.
The importance of fully understanding behavioral development cannot be emphasized too strongly. Without detailed knowledge of how the behavior of individuals unfolds throughout life, and not only during infancy, we can only guess at the supposed adaptive significance of various ontogenetic patterns and how they may be related to (1) the immediate situation in which a young animal Cited by: Fritzell EK, Hubert GF, Meyen BE, Sanderson GC () Age-specific reproduction in Illinois and Missouri raccoons.
Journal of Wildlife Management – View Article. When increment lengths estimated by LMM were included, a similar negative relationship between horn growth and age at death was found (robust estimate: −0 ± 0, P = 0, n = with one outlier removed; Fig. As expected from the negative relationship between horn growth and age at death, rams with the greatest early horn.
Part of the reason we are gaining new insights into the effect of age on human reproduction is the work of Steptoe and Edwards, who inoversaw the birth of the first in vitro fertilization (IVF) baby.
Since then, significant strides have been made in the diagnosis and treatment of impaired fertility, and thousands of couples undergo treatment each year, thereby allowing investigators to. On the Oregon study areas, owls first bred at later ages (>50% at age ≥3), had lower mean numbers of fledglings (–) at most ages, and had longer mean lifespans (7–9 years).
These patterns appear consistent with a compensatory relationship between reproduction and survival that was suggested in at least one previous by: 3.
Full text of "Wolverine (Gulo gulo) biology and management: a literature review and annotated bibliography" See other formats. This banner text can have markup. web; books; video; audio; software; images; Toggle navigation. Return postage is paid by by borrowers, as well as gifts of books, pamphlets, reprints, and magazines, should be addressed to: Josselyn Van Tyne Memorial Library, Museum of Zoology, The Univ.
of Michigan, Geddes Ave., Ann Arbor, MIUSA. Contributions to the New Book Fund should be sent to the Treasurer. the borrower. Previous analyses of age-specific reproduction in our population (Bouwhuis et al. ) focused on females of known reproductive life span, because data on male reproductive performance are less complete and potentially confounded by extrapair paternity and reproductive life span is an important factor to include in models aiming to estimate within-individual patterns of a dependent variable Cited by: Age‐Specific Analyses: Survival and Reproduction.
In order to characterise the relationship between age and either reproductive performance or survival, we fitted a variety of functions (null, linear, linear + quadratic, allowing for the existence of age thresholds with separate slopes each side of the threshold).Cited by: The characteristics for the pandemic differ substantially from the other 2 in that 3 distinct waves occurred; the age-specific attack rates were highest for those in their teens, 20s, and 30s; and the mortality rates were higher (2).
In addition, age-specific attack rates and mortality rates differed for each of the 3 waves (28). As the book developed, we were consistently astounded at the remarkable insights and contributions of the authors of the chapters in this book.
Collectively they are a remarkable group of creative scientists, and this book truly stands on their shoulders. All of us have had the benefit of discussions about restoration ecology over many years.fig. 2. Age-distribution pyramids based on age estimated from length of dead field collected shells of Achatina fulica.
Fig. 3 indicates that in gulches Aand B there was a marked decrease in survival at two points; one in young age groups and the other in the old age groups. In both cases the survival rate was lowest among young age groups.Age determination of raccoons GRAU G.
A. J. Wildl. Manage. 34,White Book on Environmental in Hokkaido, Age-specific reproduction in raccoons in northwestern Oregon FIERO B. C. J. Mammal. 67,Cited by: