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Identifying Individual Eurasian Otters (Lutra lutra) Based On Measurements Of Their Footprints Standardization Of The Method And Its Potential For Censusing And Monitoring Wild Otter Populations
(Biology, 2007-08-23)
A method for identifying individual Eurasian otters (Lutra lutra L.) from measurements of their footprints was first tested by performing experiments with captive animals. Digital photographs were taken of imprints in mud ...
A Study Of Factors Affecting Scale Roughness In The Western Diamondback Rattlesnake (Crotalus atrox)
(Biology, 2007-08-23)
Reptilian scales are very complex with patterns across their surface like a human fingerprint. These patterns are species specific, but there has been no way to quantify differences. A new technique using the confocal ...
Evolutionary Morphology Of The Speckled Rattlesnakes (viperidae: Crotalus Mitchellii Group)
(Biology, 2009-09-16)
I examined various facets of morphological variation and evolution in the speckled rattlesnake (Crotalus mitchellii) species group. I performed three separate, but related, studies pertaining to the following topics: body ...
A Sticky Situation: Functional Responses Of Mast Cells To Acidic pH
(Biology, 2008-04-22)
Precise regulation of extracellular pH is critical for proper function of many cellular activities. Minor fluctuations in pH can have profound effects on ion transport, receptor function, and cellular secretions. This work ...
Use Of Temperature Sensitive Mutants To Map Reovirus Induced Oncolysis
(Biology, 2007-08-23)
Reovirus is known to establish persistent infections in normal cells while selectively destroying transformed cells. Individual viruses from each of the ten groups of Reovirus is known to establish persistent infections ...
Species Limits And Phylogenetic Systematic Of The Diurnal Geckos Of The Genus Gonatodes (Squamata: Sphaerodactylidae)
(Biology, 2008-09-17)
The genus Gonatodes (family Sphaerodactylidae) is a diverse of group of about 20 species currently recognized of mostly diurnal geckos that are collectively distributed from southern Mexico to Brazil and Bolivia, and also ...
The Evolutionary History And Genomic Impact Of Mammalian Dna Transposons
(Biology, 2009-09-16)
Transposable elements (TEs) are mobile repetitive sequences that make up large fractions of mammalian genomes, including at least 45% of the human genome. Class 2, or DNA intermediate transposons, which make up approximately ...
Proteasomal Gene Duplications And Recruitment Of Testis Specific Expression In Drosophila
(Biology, 2008-09-17)
Proteasome is a large multisubunit complex that degrades ubiquitinated proteins in a highly regulated manner in all eukaryotes. Two subcompartments of this subunit are the 19Scap and the 20S core particle with 19S acting ...
Study Of The Expression Pattern Of A Possible Pseudogene And A Functional Retrogene In Drosophila
(Biology, 2007-08-23)
Gene duplication occurs when a mutation leads to the copying of a region of DNA that contains a functional gene. After duplication, there will be two copies of the gene in the genome. Gene duplication can have deleterious ...
Monte Carlo Analysis Of Refuge Site Selection: Statistical Properties And An Empirical Example
(Biology, 2007-10-08)
The Monte Carlo method can be a useful technique providing information on central tendencies and tolerance for selection data. There are many statistical hypothesis tests that are employed in selection studies, but most ...