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Full-Text Articles in Life Sciences
Determinants Of Effective Population Size For Loci With Different Modes Of Inheritance, Jay F. Storz, U. Ramakrishnan, S. C. Alberts
Determinants Of Effective Population Size For Loci With Different Modes Of Inheritance, Jay F. Storz, U. Ramakrishnan, S. C. Alberts
Jay F. Storz Publications
Here we report an assessment of the determinants of effective population size (Ne) in species with overlapping generations. Specifically, we used a stochastic demographic model to investigate the influence of different life-history variables on Ne/N (where N = population census number) and the influence of sex differences in life-history variables on Ne for loci with dif¬ferent modes of inheritance. We applied an individual-based modeling approach to two datasets: one from a natural popu¬lation of savannah baboons (Papio cynocephalus) in the Amboseli basin of southern Kenya and one from a human tribal …
Genetic Consequences Of Polygyny And Social Structure In An Indian Fruit Bat, Cynopterus Sphinx. Ii. Variance In Male Mating Success And Effective Population Size, Jay F. Storz, Hari Bhat, Thomas H. Kunz
Genetic Consequences Of Polygyny And Social Structure In An Indian Fruit Bat, Cynopterus Sphinx. Ii. Variance In Male Mating Success And Effective Population Size, Jay F. Storz, Hari Bhat, Thomas H. Kunz
Jay F. Storz Publications
Variance in reproductive success is a primary determinant of genetically effective population size (Ne), and thus has important implications for the role of genetic drift in the evolutionary dynamics of animal taxa characterized by polygynous mating systems. Here we report the results of a study designed to test the hypothesis that polygynous mating results in significantly reduced Ne in an age-structured population. This hypothesis was tested in a natural population of a harem-forming fruit bat, Cynopterus sphinx (Chiroptera: Pteropodidae), in western India. The influence of the mating system on the ratio of variance Ne to adult …
Female Sensitivity To Diet And Irradiation Treatments Underlies Sex-Mortality Differentials In The Mediterranean Fruit Fly, James R. Carey, Pablo Liedo, Hans-Georg Müller, Jane-Ling Wang, Brad Love, Lawrence G. Harshman, Linda Partridge
Female Sensitivity To Diet And Irradiation Treatments Underlies Sex-Mortality Differentials In The Mediterranean Fruit Fly, James R. Carey, Pablo Liedo, Hans-Georg Müller, Jane-Ling Wang, Brad Love, Lawrence G. Harshman, Linda Partridge
Lawrence G. Harshman Publications
Large-scale experiments on medflies that were subjected to sterilizing doses of ionizing radiation (plus intact controls) and maintained on either sugar-only or full, protein-enriched diets revealed that, whereas the mortality trajectories of both intact and irradiated male cohorts maintained on both diets are similar, the mortality patterns of females are highly variable. Mean mortality rates at 35 days in male cohorts ranged from 0.2 to 0.3 but in female cohorts ranged from 0.09 to 0.35, depending on treatment. The study reports three main influences: (a) qualitative differences exist in the sex–mortality response of medflies subjected to dietary manipulations and irradiation, …
Molecular Phylogeny Of Diabrotica Beetles (Coleoptera: Chrysomelidae) Inferred From Analysis Of Combined Mitochondrial And Nuclear Dna Sequences, Thomas L. Clark, Lance J. Meinke, John E. Foster
Molecular Phylogeny Of Diabrotica Beetles (Coleoptera: Chrysomelidae) Inferred From Analysis Of Combined Mitochondrial And Nuclear Dna Sequences, Thomas L. Clark, Lance J. Meinke, John E. Foster
Department of Entomology: Faculty Publications
The phylogenetic relationships of thirteen Diabrotica (representing virgifera and fucata species groups) and two outgroup Acalymma beetle species (Coleoptera: Chrysomelidae) were inferred from the phylogenetic analysis of a combined data set of 1323 bp of mitochondrial DNA (mtDNA) cytochrome oxidase subunit 1 (COI) and the entire second internal transcribed spacer region (ITS-2) of nuclear ribosomal DNA of 362 characters. Species investigated were D. adelpha, D. balteata, D. barberi, D. cristata, D. lemniscata, D. longicornis, D. porracea, D. speciosa, D. undecimpunctata howardi, D. u. undecimpunctata, D. virgifera virgifera, D. v. zeae, D. viridula, and outgroup A. blandulum and A. vittatum. Maximum …
Origin And Conservation Genetics Of Threatened Ute Ladies’-Tresses, Spiranthes Diluvialis (Orchidaceae), Allen L. Szalanski, Gerry Steinauer, Richard Bischof, Jessica Lynn Petersen
Origin And Conservation Genetics Of Threatened Ute Ladies’-Tresses, Spiranthes Diluvialis (Orchidaceae), Allen L. Szalanski, Gerry Steinauer, Richard Bischof, Jessica Lynn Petersen
Department of Animal Science: Faculty Publications
The Ute ladies’-tresses, Spiranthes diluvialis, is listed as a threatened orchid in west-central United States by the Federal government. Information on its origin and patterns of genetic variation is needed to develop effective conservation strategies for this species. DNA sequencing and polymerase chain reaction–restriction fragment length polymorphism (PCR-RFLP) was used to evaluate genetic variation and structure of 23 populations of S. diluvialis. In addition, four congeneric species were analyzed to determine possible origins of the putative allotetraploid S. diluvialis. DNA sequencing and PCR-RFLP analysis of the nuclear ribosomal internal transcribed spacer (ITS) and mitochondrial and chloroplast DNA …
Clinal Variation In Body Size And Sexual Dimorphism In An Indian Fruit Bat, Cynopterus Sphinx (Chiroptera: Pteropodidae), Jay F. Storz, J. Balasingh, Hari Bhat, P. Thiruchenthil Nathan, D. Paramanantha Swami Doss, A. Antony Prakash, Thomas H. Kunz
Clinal Variation In Body Size And Sexual Dimorphism In An Indian Fruit Bat, Cynopterus Sphinx (Chiroptera: Pteropodidae), Jay F. Storz, J. Balasingh, Hari Bhat, P. Thiruchenthil Nathan, D. Paramanantha Swami Doss, A. Antony Prakash, Thomas H. Kunz
Jay F. Storz Publications
Geographic variation in body size and sexual dimorphism of the short-nosed fruit bat (Cynopterus sphinx ) was investigated in peninsular India. Bats were sampled at 12 localities along a 1,200 km latitudinal transect that paralleled the eastern flanks of the Western Ghats. The geographic pattern of variation in external morphology of C. sphinx conforms to the predictions of Bergmann’s Rule, as indicated by a steep, monotonic cline of increasing body size from south to north. This study represents one of the first conclusively documented examples of Bergmann’s Rule in a tropical mammal and confirms that latitudinal clines in body …
Genetic Variation In Two Conserved Local Romanian Pig Breeds Using Type 1 Dna Markers, Daniel C. Ciobanu, Andrew E. Lu, Alexandru Nagy, Richard Wales, Max F. Rothschild, Graham S. Plastow
Genetic Variation In Two Conserved Local Romanian Pig Breeds Using Type 1 Dna Markers, Daniel C. Ciobanu, Andrew E. Lu, Alexandru Nagy, Richard Wales, Max F. Rothschild, Graham S. Plastow
Department of Animal Science: Faculty Publications
Analysis of the genetic variation of an endangered population is an important component for the success of conservation. Animals from two local Romanian pig breeds, the Mangalitsa and Bazna, were analyzed for variation at a number of genetic loci using PCR-based DNA tests. Polymorphism was assessed at loci which 1) are known to cause phenotypic variation, 2) are potentially involved in trait differences or 3) are putative candidate genes. The traits considered are disease resistance, growth, coat color, meat quality and prolificacy. Even though the populations are small and the markers are limited to specific genes, we found significant differences …
Genetic Consequences Of Polygyny And Social Structure In An Indian Fruit Bat, Cynopterus Sphinx. I. Inbreeding, Outbreeding, And Population Subdivision, Jay F. Storz, Hari Bhat, Thomas Kunz
Genetic Consequences Of Polygyny And Social Structure In An Indian Fruit Bat, Cynopterus Sphinx. I. Inbreeding, Outbreeding, And Population Subdivision, Jay F. Storz, Hari Bhat, Thomas Kunz
Jay F. Storz Publications
Population subdivision into behaviorally cohesive kin groups influences rates of inbreeding and genetic drift and has important implications for the evolution of social behavior. Here we report the results of a study designed to test the hypothesis that harem social structure promotes inbreeding and genetic subdivision in a population with overlapping generations. Genetic consequences of harem social structure were investigated in a natural population of a highly polygynous fruit bat, Cynopterus sphinx (Chiroptera: Pteropodidae), in western India. The partitioning of genetic variance within and among breeding groups was assessed using 10-locus microsatellite genotypes for 431 individually marked bats. Genetic analysis …