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Friday, August 7, 2020 | History

2 edition of comparison of MHC variability within and among species of small felids found in the catalog.

comparison of MHC variability within and among species of small felids

Meghan M Smith

comparison of MHC variability within and among species of small felids

by Meghan M Smith

  • 79 Want to read
  • 5 Currently reading

Published .
Written in English

    Subjects:
  • Felidae,
  • Major histocompatibility complex

  • Edition Notes

    Statementby Meghan M. Smith
    The Physical Object
    Paginationiv, 55 leaves :
    Number of Pages55
    ID Numbers
    Open LibraryOL15270212M

      Variation among free-living mammals in their susceptibility to pathogens remains poorly understood. Among all mammals, carnivores are arguably the most threatened by pathogens (Pedersen et al. ), due in large part to anthropogenic terization of the diversity of functionally relevant immune system genes can shed considerable light on both disease ecology in carnivores, .   Within the MHC there are 6 genes that encode class I molecules HLA-A, HLA –B, HLA-C, HLA-E, HLA-F and HLA-G. Among these HLA-A, HLA –B, and HLA-C are the most important and are most polymorphic. Table 1 shows the degree of polymorphism at each of these loci.

    Runs of homozygosity (ROH), uninterrupted stretches of homozygous genotypes resulting from parents transmitting identical haplotypes to their offspring, have emerged as informative genome-wide estimates of autozygosity (inbreeding). We used genomic profiles based on K single nucleotide polymorphisms (SNPs) from nine breeds of domestic cattle (Bos taurus) and the European bison . O ne of the most fascinating aspects of cat biology is that, from the two-pound black footed cat to the five hundred pound tiger, cats of all variations have one common theme. When you have a cat in your house you live with the essence of a tiger. T he classification of felids has been a long and bitter debate among taxonomists. The various classification schemes have been based on an array of.

    a comparison of two small felids from South African arid lands Alexander Sliwa, Marna Herbst, and M. Gus L. Mills 27 Ocelot ecology and its effect on the small-felid guild in the lowland neotropics Tadeu G. de Oliveira, Marcos A. Tortato, Leandro Silveira, Carlos Benhur Kasper, Fa´bio D. Mazim, Mauro Lucherini. Small felids generally show a great deal of variation in coat patterns and colors. Considering all metrics, as well as geographic affinities, Garcia-Perea () classified 3 ‘‘types’’ of pampas cats and concluded that colocolo should be split into 3 species (braccatus, colocolo,andpajeros) with which Wozen-craft () concurred.


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Comparison of MHC variability within and among species of small felids by Meghan M Smith Download PDF EPUB FB2

The comparison indicates that also species with a low number of different MHC alleles, such as the critically endangered Malagasy Giant Jumping Rat (Hypogeomys antimena, 5 alleles) whose geographic range was recently restricted to less t ha, still have high levels of nucleotide and amino acid divergence between MHC DRB-alleles while Cited by: During this investigation, we examined genetic diversity for MHC class I (MHC-I) and MHC class II-DRB (MHC-II) among wild and captive Indian leopards.

This study estimated a pool of 9 and   MHC Genetic Variability. The 3 MHC loci were polymorphic with 9 (DRB1), 6 (DQA1), and 8 (DQB1) alleles across the 74 genotyped samples. Both H o and H e were highest at DQB1 and lowest at DQA1. The effective number of alleles (N e) was largest at DRB1 (Supplementary Table S1).

The number of segregating sites was 43 in DRB1, 8 in DQA1, and 39 Cited by:   MHC variation may not necessarily be disproportionately affected when inbreeding is high (Hedrick et al., ); yet conversely, species with reduced genetic diversity in Cited by: Genetic variation at the major histocompatibility (MHC) class I loci was examined in captive and wild samples of three subspecies of tiger (Bengal, Panthera tigris tigris; Siberian, P.

altaica. MHC variation within and between populations. We obtained 14 exon 2 alleles (4 for Aime-C, 1 for Aime-F, 5 for Aime-I, and 4 for Aime-L) and 23 exon 3 alleles (8 for Aime-C, 1 for Aime-F, 7 for Aime-I, and 7 for Aime-L) and identified 24 linked long fragment haplotypes (9 for Aime-C, 1 for Aime-F, 7 for Aime-I, and 7 for Aime-L) across the 4 Aime-MHC class I loci (GenBank: JX–JX).

Specifically, when small felids are maintained in groups larger than a pair (), they are not likely to reproduce. Furthermore, a husbandry style in which keepers spent considerable time talking to, and interacting with, the cats under their care was more likely to result in offspring than one in which these interactions did not occur.

Comparison of Two Small Felids from South African Arid Lands Haemish Melville Using Spoor Techniques to Examine the Hunting Behaviour of Caracals in the Kgalagadi Transfrontier Park Advait Edgaonkar Patterns of Spatial Co-Occurrence in Leopards (Panthera pardus) and Dholes (Cuon alpinus) in Satpura Tiger Reserve, India.

The family Felidae is one of the most diverse groups of carnivores, and includes species that range in size from 1 kg ( lb) to over lb ( kg). Small cats are defined here as those felids having an adult body weight of less than 20 kg (44 lb (Emmons,p). As our results demonstrated, population size variability can differ greatly among populations of single species.

Thus any actual large‐scale taxonomic patterns may be obscured due to variation within taxa. For example, despite significant differences among salmonid species, considerable variation remained at the intraspecific level.

Many proteins involved in antigen processing and presentation are encoded by genes within the major histocompatibility complex. The major histocompatibility complex is located on chromosome 6 in humans and chromosome 17 in the mouse and extends over some 4 centimorgans of DNA, about 4 × 10 6 base pairs.

In humans it contains more than genes. those interested in geographical variation within species, as I hope to demonstrate with examples from my own research.

Though my ' Department of Ornithology, American Museum of Natural History, New York, New York USA. primary objective in revising the genus Myiar- chus was to define species limits within. Demographic bottlenecks erode genetic diversity and may increase endangered species’ extinction risk via decreased fitness and adaptive potential.

The genetic status of species is generally assessed using neutral markers, whose dynamic can differ from that of functional variation due to selection. The MHC is a multigene family described as the most important genetic component of the.

Allelic diversity at major histocompatibility complex (MHC) genes is thought to be maintained by balancing selection over long periods of time, even across multiple speciation events. Trans-species sharing of MHC alleles among genera has been supported by many studies on mammals and fish, but in rodents, the results are ambiguous.

A wide range in reproductive mechanisms exists among Felidae, with a high degree of variability in the type of ovulation (spontaneous vs. induced), seasonality, and social influences on reproductive activity.

This means that developing strategies to enhance or even suppress reproduction of felids often requires species-specific approaches. Rhodeus sinensis is a bitterling species occurring throughout the numerous freshwater systems on the East Asia.

Here, we analyzed the diversity of the MHC class IIB (DAB) genes from this species, which may offer meaningful insights into evolutionary processes in this species as well as other bitterlings.

Using cDNA and gDNA samples from 50 individuals, we discovered classical allelic. estimation of within and between breed genetic diversity, and genetic admixture among breeds even if they are closely related.

AFLPs. AFLPs are dominant biallelic markers (Vos et al., ). Variations at many loci can be arrayed simultaneously to detect single nucleotide variations of. Patterns of genetic and genomic variance are informative in inferring population history for human, model species and endangered populations.

Here the genome sequence of wild-born African cheetahs reveals extreme genomic depletion in SNV incidence, SNV density, SNVs of coding genes, MHC class I and II genes, and mitochondrial DNA SNVs.

Cheetah genomes are on average 95 %. Felids may eat the viscera (i.e., internal organs) of prey, thus consuming partially digested plant biomass. Although they typically hunt for large prey (e.g., Perissodactyla and Artiodactyla), when the opportunity arises large cats may eat carrion as well.

Small cats predominantly prey upon rodents and. All felids have muscular limbs and tails between half and two thirds the length of its body.

See the gallery to compare their physical similarities. They have soft to pads in addition to retractable claws while in resting position. Felids have binocular vision and great night vision as. In general, sperm motility is relatively high among felids (Appendix S3), with a mean SMI across species of 69% (26–90%, n E = ).

Sperm vitality (69%, 49–87%, n E = ) and acrosome intactness (84%, 20–%, n E = ) also appear to be high in fresh ejaculates of most felids, although only 13 of the 92 studies investigating the.Felidae is a family of mammals in the order Carnivora, colloquially referred to as cats, and constitutes a clade.A member of this family is also called a felid.

The term "cat" refers both to felids in general and specifically to the domestic cat (Felis catus). Felidae species exhibit the most diverse fur pattern of all terrestrial carnivores. Cats have retractile claws, slender muscular.Nutrition - The nutritional needs of small felids is well under-stood and the following summary by Mary Allen is offered (from Wildt, Mellen and Seal,pp ).

"In general, wild felids share the same nutritional requirements as the domestic cat, although there is evidence that some species differ with respect to selected nutrients.