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Journal of Heredity

Hadi Esfandyari, Mark Henryon, Peer Berg, Jorn Rind Thomasen, Piter Bijma, Anders Christian Sørensen
Under the finite-locus model in the absence of mutation, the additive genetic variation is expected to decrease when directional selection is acting on a population, according to quantitative-genetic theory. However, some theoretical studies of selection suggest that the level of additive variance can be sustained or even increased when non-additive genetic effects are present. We tested the hypothesis that finite-locus models with both additive and non-additive genetic effects maintain more additive genetic variance (V_A) and realize larger medium-to-long term genetic gains than models with only additive effects when the trait under selection is subject to truncation selection...
January 12, 2017: Journal of Heredity
Benoit Talbot, Ting-Wen Chen, Shawna Zimmerman, Stéphane Joost, Andrew J Eckert, Taylor M Crow, Devrim Semizer-Cuming, Chitra Seshadri, Stéphanie Manel
Population genomic analysis can be an important tool in understanding local adaptation. Identification of potential adaptive loci in such analyses is usually based on the survey of a large genomic dataset in combination with environmental variables. Phenotypic data are less commonly incorporated into such studies, although combining a genome scan analysis with a phenotypic trait analysis can greatly improve the insights obtained from each analysis individually. Here, we aimed to identify loci potentially involved in adaptation to climate in 283 Loblolly pine (Pinus taeda) samples from throughout the species' range in the southeastern United States...
December 20, 2016: Journal of Heredity
Philippe Gaubert, Riddhi Patel, Géraldine Veron, Steven M Goodman, Maraike Willsch, Raquel Vasconcelos, André Lourenço, Marie Sigaud, Fabienne Justy, Bheem Dutt Joshi, Jörns Fickel, Andreas Wilting
The biogeographic dynamics affecting the Indian subcontinent, East and Southeast Asia during the Plio-Pleistocene has generated complex biodiversity patterns. We assessed the molecular biogeography of the small Indian civet (Viverricula indica) through mitogenome and cytochrome b + control region sequencing of 89 historical and modern samples to (i) establish a time-calibrated phylogeography across the species' native range and (ii) test introduction scenarios to western Indian Ocean islands. Bayesian phylogenetic analyses identified three geographic lineages (East Asia, sister-group to Southeast Asia and the Indian subcontinent + northern Indochina) diverging 3...
December 11, 2016: Journal of Heredity
Ramon Marin Favarato, Leila Braga Ribeiro, Eliana Feldberg, Daniele Aparecida Matoso
Repetitive DNA sequences are present in the genome of basically every known organism, and transposable elements (TE) are one of the most representative sequences involved in chromosomal rearrangements and the genomic evolution of eukaryotes. In fish, the non-LTR retrotransposon TEs, Rex1, Rex3, and Rex6, are widely distributed in fish genomes and are the best-characterised TEs in several species. In the current study, three of these retroelements were physically mapped, through fluorescent in situ hybridization (FISH), in seven species (71 specimens) of the genus Ancistrus, known as bristlenose catfish: A...
December 11, 2016: Journal of Heredity
Joel W G Slade, Yanina Sarquis-Adamson, Gregory B Gloor, Marc-André Lachance, Elizabeth A MacDougall-Shackleton
Infectious disease represents an emerging threat to natural populations, particularly when hosts are more susceptible to novel parasites (allopatric) than to parasites from the local area (sympatric). This pattern could arise through evolutionary processes (host populations become adapted to their local parasites and genetically differentiated from other populations at immune-related loci) and/or through ecological interactions (host individuals develop resistance to local parasites through previous exposure)...
December 11, 2016: Journal of Heredity
Philip W Hedrick, Marty Kardos, Rolf O Peterson, John A Vucetich
Inbreeding, relatedness, and ancestry have traditionally been estimated with pedigree information, however, molecular genomic data can provide more detailed examination of these properties. For example, pedigree information provides estimation of the expected value of these measures but molecular genomic data can estimate the realized values of these measures in individuals. Here, we generate the theoretical distribution of inbreeding, relatedness, and ancestry for the individuals in the pedigree of the Isle Royale wolves, the first examination of such variation in a wild population with a known pedigree...
December 11, 2016: Journal of Heredity
Raquel Bozini Gallo, Rachel Colauto Milanezi Aguiar, Ana Paula Scaramal Ricietto, Laurival Vilas-Boas, Carlos Roberto Maximiano da Silva, José Ricardo Inacio Ribeiro, Renata Da Rosa
The genus Belostoma, known colloquially as 'giant water bugs', presents striking cytogenetic diversity and extensive chromosome variability. Notwithstanding, its karyotype evolution is not well understood. We analyzed eight species of Belostoma (77 samples). The meiotic analysis revealed 2n=14+XY for B. horvathi and B. candidulum; 2n=22+XY for B. cummings; 2n=26+X1X2Y for B. dentatum, B. elongatum, and B. discretum; and 2n=26+X1X2X3Y for B. testacopallidum and B. dilatatum. All species showed holokinetic chromosomes...
December 6, 2016: Journal of Heredity
Guillermo N Ojeda, Patricia S Amavet, Eva C Rueda, Pablo A Siroski, Alejandro Larriera
The yacare caiman (Caiman yacare) is a reptile from South America and 1 of the 2 crocodilian species present in Argentina. The degradation of their natural habitat and strong hunting pressure led to a sharp numerical decline of wild populations. Nowadays, C. yacare is included in Appendix II of CITES, and ranching practices in some areas in Argentina are helping hatching success. In this context, it is important to better understand the population structure and mating system of the species. To do this, we amplified 10 microsatellite markers (SSRs) in 148 individuals of 13 C...
December 6, 2016: Journal of Heredity
Francisca Robles Rodríguez, Roberto de la Herrán, Rafael Navajas-Pérez, Belén Cano-Roldán, Pedro Juan Sola-Campoy, Jerson Alexander García-Zea, Carmelo Ruiz Rejón
Two new centromeric satellite DNAs in flatfish (Order Pleuronectiformes) have been characterized. The SacI-family from Hippoglossus hippoglossus, restricted to this species, had a monomeric size of 334 base pair (bp) and was located in most of the centromeres of its karyotype. The PvuII-family, with a monomeric size of 177 bp, was initially isolated from the genome of Solea senegalensis, and fluorescent in situ hybridization (FISH) localized the repeat to centromeres of most of the chromosomes. This family could only be amplified in 2 other species of the genus Solea (Solea solea and Solea lascaris)...
November 4, 2016: Journal of Heredity
Luigi D'Andrea, Patrick Meirmans, Clemens van de Wiel, Roberto Guadagnuolo, Robbert van Treuren, Gregor Kozlowski, Hans den Nijs, François Felber
Prickly lettuce (Lactuca serriola L., Asteraceae), a wild relative of cultivated lettuce, is an autogamous species which greatly expanded throughout Western and Northern Europe during the last two centuries.Here we present a large-scale biogeographic genetic analysis performed on a dataset represented by 2622 individuals from 110 wild European populations. Thirty-two maternally inherited chloroplast RFLP-markers and ten nuclear microsatellite loci were used. Microsatellites revealed low genetic variation and high inbreeding coefficients within populations, as well as strong genetic differentiation between populations, which was in accordance with the autogamous breeding system...
October 26, 2016: Journal of Heredity
Josefin Stiller, Nerida G Wilson, Stephen Donnellan, Greg W Rouse
The leafy seadragon (Phycodurus eques, Syngnathidae), is a charismatic endemic of Australia's temperate coast. The species exhibits remarkable camouflage in its kelp and seagrass habitat. These habitats have been retreating throughout the range of the species, leading to concerns about the persistence of leafy seadragons. Despite being a popular aquarium display and a flagship for coastal conservation, little is known about leafy seadragon biology. We used seven microsatellite markers and two mitochondrial DNA fragments to investigate the population structuring and genetic diversity of 71 individuals...
October 25, 2016: Journal of Heredity
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Heredity
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Heredity
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Heredity
(no author information available yet)
No abstract text is available yet for this article.
January 2017: Journal of Heredity
Alex Harkess, Jim Leebens-Mack
Plants have evolved a diverse array of strategies for sexual reproduction, particularly through the modification of male and female organs at distinct points in development. The immense variation in sexual systems across the land plants provides a unique opportunity to study the genetic, epigenetic, phylogenetic, and ecological underpinnings of sex determination. Here, we reflect on more than a century of research into flowering plant sex determination, placing a particular focus on the foundational genetic and cytogenetic observations, experiments, and hypotheses...
January 2017: Journal of Heredity
Fredy A Colorado-Garzón, Peter H Adler, Luis F García, Paulina Muñoz de Hoyos, Marta L Bueno, Nubia E Matta
Black flies (Diptera: Simuliidae) are distributed throughout the world, with more than 2200 formally described species. The family is renowned for its high frequency of cryptic species, offering an opportunity for integrative taxonomy, based on morphological, chromosomal, and molecular approaches. The biodiversity within Simulium (Psilopelmia) ignescens and S. (Psilopelmia) tunja in Colombia was estimated from the larval stage; 10 morphoforms were recognized based on 7 structural characters. This remarkable morphological variation was evaluated through 23 markers on the polytene chromosomes...
January 2017: Journal of Heredity
Catherine L Peichel
No abstract text is available yet for this article.
January 2017: Journal of Heredity
Mabel D Giménez, Daniel W Förster, Eleanor P Jones, Fríða Jóhannesdóttir, Sofia I Gabriel, Thadsin Panithanarak, Moira Scascitelli, Valeria Merico, Silvia Garagna, Jeremy B Searle, Heidi C Hauffe
The first natural chromosomal variation in the house mouse was described nearly 50 years ago in Val Poschiavo on the Swiss side of the Swiss-Italian border in the Central Eastern Alps. Studies have extended into neighboring Valtellina, and the house mice of the Poschiavo-Valtellina area have been subject to detailed analysis, reviewed here. The maximum extent of this area is 70 km, yet it has 4 metacentric races and the standard 40-chromosome telocentric race distributed in a patchwork fashion. The metacentric races are characterized by highly reduced diploid numbers (2n = 22-26) resulting from Robertsonian fusions, perhaps modified by whole-arm reciprocal translocations...
January 2017: Journal of Heredity
Tariq Ezaz, Kornsorn Srikulnath, Jennifer A Marshall Graves
The diversity of sex chromosomes among amniotes is the product of independent evolution of different systems in different lineages, defined by novel sex-determining genes. Convergent evolution is very common, suggesting that some genes are particularly adept at taking on a sex-determining role. Comparative gene mapping, and more recently whole genome sequencing, have now turned up other surprising relationships; different regions of the amniote genome that have become sex determining in some taxa seem to share synteny, or share sequence, in others...
January 2017: Journal of Heredity
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