2 edition of Strain differences in the mating behaviour of the laboratory rat. found in the catalog.
Strain differences in the mating behaviour of the laboratory rat.
Robert Alan Blizard
Thesis (M.Sc.)-University of Birmingham, Department of Psychology.
The superior rats will then redouble their efforts to breed and increase the population. The Dallas black rat, or Dallas Ship rat, or roof rat has mating habits that are similar to the brown rat with a few key differences. Like the brown rats they form groups called a . Different species of animals of different strains and use of laboratory animals in experiments.- authorSTREAM (Monkey) Lithium approved (Rat, Guinea Pig) Animal social and behavior patterns discovered (Bee, Fish, Bird)* Interaction between tumor viruses and genetic material discovered (Monkey, Horse, Chicken, Mouse)*
Male rats reach sexual maturity at about 6 to 10 weeks of age; females reach maturity at 8 to 12 weeks. From this age onward, females and males should be housed separately. The average gestation time is 21 to 23 days, and pregnancy is sometimes detectable at about 2 weeks by feeling the abdomen or noticing weight gain or mammary (breast. Laboratory mice are the same species as the house mouse, however, they are often very different in behaviour and are hundreds of established inbred, outbred, and transgenic strains. A strain, in reference to rodents, is a group in which all members are as nearly as possible genetically laboratory mice, this is accomplished through inbreeding.
A released lab rat on the way to an apple on a branch, loses balance, but regains it after some mad scrambling. Even though this rat was raised in a research laboratory cage, he practiced and gained muscle power, and agility, which served him well in his desire to explore the world. (Berdoy, M. The Laboratory Rat: A Natural History. LeFevre, J. & McClintock, M.K. Reproductive senescence in female rats: a longitudinal study of individual differences in estrous cycles and behavior. Biol. Reprod. 38, – ().
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The laboratory rat has long been used in experimental physiology and has made significant contributions to several complex areas of mammalian biology.
This chapter presents the taxonomy of laboratory rat and discusses its stocks and strains. Rats are rodents, and thus members of the largest family of mammals.
Certain rat strains or stocks, such as genetically modified rats with abbreviated reproductive lives, may require more intensive mating at early ages to maintain the line. In these instances, greater numbers of rats may need to be mated to overcome reproductive inefficiencies seen in young rats, especially for young male by: A summary and overview of the mice and rats used in biomedical research, based on a survey of formal publications.
C57BL/6 and BALB/c are the main mouse strains. Sprague-Dawley and Wistar are the main rat strains. The Jackson Laboratory, Charles River Laboratories, Taconic Biosciences, and Harlan Laboratories are the main by: This book contains a wide range of information of huge complexity on rat behavior.
The book has three objectives. The first objective is to present an introduction of rat behavior. In choosing the rat as the subject species, the book has made the assumption that this species will remain, as it has in the past, the primary subject used the laboratory investigations of behavior.
The laboratory rat is an invaluable model for mammalian behavior as it displays flexible, complex behaviors and is ideally suited for systems neuroscience approaches, biochemical analysis and. To study USVs emitted by males during male–female interaction, we used males from 13 inbred strains: 10 wild-derived strains, one strain derived from fancy mice, and two laboratory strains.
For the female counterparts, we used MCH mice, which were produced as hybrids of four different inbred strains that originated in the ICR outbred colony. Martha K. McClintock, Group Mating in the Domestic Rat as a Context for Sexual Selection: Consequences for the Analysis of Sexual Behavior and Neuroendocrine Responses, /S(08), (), ().
Social behaviors • Mice are not small rats. This is especially noticeable in social behavior • Mice have signaling postures to communicate intent, anxiety, dominance, excitement • These can be quantified according to frequency, number/type & duration.
Grant and Mackintosh () Behaviour. In the wild, rats and mice hold group territories. The copulatory behavior of both wild and domestic strains of Rattus norvegicus was observed via continuous video monitoring as it spontaneously occurred in the large seminatural environment and under standard laboratory conditions.
A factorial design demonstrated that the female Norway rat has the major role determining the amount and timing of. Hormonal factors in the activation of male rat mating behavior. Male sexual behavior in virtually all vertebrate species is dependent on T, secreted by the Leydig cells of the testes and metabolized in target cells to either E 2 (by aromatization) or dihydrotestosterone (DHT, by 5α-reduction).
Plasma T is undetectable within 24 hours of castration (Krey and McGinnis ); however, copulatory. This study compared performance on common behavioural tests among the C57BL/6J, CBA, BALB/c, SvEv (inbred lines) and the CD1 (outbred line) mouse strains. Our findings demonstrate differences in behaviour among these strains, which support the notion that background genotype is an important factor in evaluating mouse models of neurological.
The progenitor of today’s laboratory rats, the Wistar rat, from the Wistar Institute in Philadelphia, was started from these albino rats supplied from France. [Sullivan] Strains of Rats and Morphology A strain of rats is a group of rats that are inbred from brothers and sisters, thus sharing a common ancestry.
The laws of animal behavior have been revised and revealed through research performed by zoologists, physiologists and experimental psychologists. Each has contributed much. Their main meeting ground has been the study of mammals, especially rats.
This classic book is unique in bringing together the principal conclusions of these researchers in a compact, well illustrated, and lucid. Explore the latest full-text research PDFs, articles, conference papers, preprints and more on MATING BEHAVIOR.
Find methods information, sources, references or conduct a literature review on. Mirskaia and Crew () reported that mating occurred at the first (vaginal) estrus in 75 and 85 per cent of the cases in two strains; percentages of pregnancy resulting from these first matings, however, were a low 48 and 57 per cent compared to 80 to 90 per cent for more mature animals.
The differences inherent in attempts to determine when. More is known about the behavior, anatomy, and molecular biology of the laboratory rat than any other animal species. Although its natural history and psychological functions have been described previously in books, this is the first comprehensive description of its s: 3.
Different alleles of a gene may be represented by a superscript to the gene symbol. Nomenclature for a strain with a spontaneous mutation is as follows: C57BL/6J-A w–J. When a mutation is maintained on an inbred strain background by mating homozygotes together, the gene symbol is given once.
Copulation behavior is one of the more ancient social behaviors exhibited among metazoans. In C. elegans, the male performs most of the overt sensory and motor behaviors that occur during mating behavior has been considered to be the most complex behavior in C.
elegans; however although intricate, male mating behavior can be broken down into simpler sub-behaviors. The laboratory rat, like its wild counterpart, is an extremely intelligent animal, probably more so than the other rodents commonly used for biomedical research. This is reflected in its behaviour and, when treated properly and sympathetically, its tolerance to handling and restraint.
Although feared by many. In mice, inbred strain differences in hearing ability and the number of USV emitted by pups have been found. USV have been extensively studied in rodents and various protocols for are available for experimental research (2,4).
In rats and mice, a postpartum estrus occurs within 24 hours after parturition. Laboratory studies have suggested that. prevalent – still persists. Normally laboratory mice have to be ‘involved’ by means of professional handling/restraint in order to perform all procedures necessary during husbandry and/or experimentation.
Nevertheless, mice (with strain differences) are usually not very aggressive and can be handled or restrained without major prob-lems.Difference are noted in size and function of organs, reproductive performance, and behavior.
•Adrenals are smaller, especially the cortex in laboratory rats. •Ovaries, testes, and secondary sex glands are the same size but mature earlier and function continuously (no seasonal cycle) in laboratory rats.Differences in mating behaviour and sex ratio between three sibling species of Nasonia Mark D.
Drapeau* and John H. Werren Department of Biology, University of Rochester, Rochester:VYUSA ABSTRACT Mating in Nasonia wasps has traditionally been thought to occur on or around their pupal fly host, after emergence.