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Journal of Heredity

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https://www.readbyqxmd.com/read/27815319/centromeric-satellite-dna-in-flatfish-order-pleuronectiformes-and-its-relation-to-speciation-processes
#1
Francisca Robles Rodríguez, Roberto de la Herrán Moreno, 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 two other species of the genus Solea (S...
November 4, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27798079/molecular-biogeography-of-prickly-lettuce-lactuca-serriola-l-shows-traces-of-recent-range-expansion
#2
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
https://www.readbyqxmd.com/read/27798078/the-leafy-seadragon-phycodurus-eques-a-flagship-species-with-low-but-structured-genetic-variability
#3
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
https://www.readbyqxmd.com/read/27742742/evolutionary-dynamics-of-the-gametologous-ctnnb1-gene-on-the-z-and-w-chromosomes-of-snakes
#4
Nararat Laopichienpong, Narongrit Muangmai, Lawan Chanhome, Sunutcha Suntrarachun, Panupon Twilprawat, Surin Peyachoknagul, Kornsorn Srikulnath
Snakes exhibit genotypic sex determination with female heterogamety (ZZ males and ZW females), and the state of sex chromosome differentiation also varies among lineages. To investigate the evolutionary history of homologous genes located in the non-recombining region of differentiated sex chromosomes in snakes, partial sequences of the gametologous CTNNB1 gene were analyzed for 12 species belonging to henophid (Cylindrophiidae, Xenopeltidae, and Pythonidae) and caenophid snakes (Viperidae, Elapidae, and Colubridae)...
October 14, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27729448/a-half-century-of-studies-on-a-chromosomal-hybrid-zone-of-the-house-mouse
#5
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...
October 11, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27789572/the-genetic-signature-of-range-expansion-in-a-disease-vector-the-black-legged-tick
#6
Sarah S T Leo, Andrew Gonzalez, Virginie Millien
Monitoring and predicting the spread of emerging infectious diseases requires that we understand the mechanisms of range expansion by its vectors. Here, we examined spatial and temporal variation of genetic structure among 13 populations of the Lyme disease vector, the black-legged tick, in southern Quebec, where this tick species is currently expanding and Lyme disease is emerging. Our objective was to identify the primary mode of tick movement into Canada based on observed spatial and temporal genetic patterns...
October 8, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27760787/phylogenomic-reconstruction-of-sportive-lemurs-genus-lepilemur-recovered-from-mitogenomes-with-inferences-for-madagascar-biogeography
#7
Runhua Lei, Cynthia L Frasier, Melissa T R Hawkins, Shannon E Engberg, Carolyn A Bailey, Steig E Johnson, Adam T McLain, Colin P Groves, George H Perry, Stephen D Nash, Russell A Mittermeier, Edward E Louis
The family Lepilemuridae includes 26 species of sportive lemurs, most of which were recently described. The cryptic morphological differences confounded taxonomy until recent molecular studies; however, some species' boundaries remain uncertain. To better understand the genus Lepilemur, we analyzed 35 complete mitochondrial genomes representing all recognized 26 sportive lemur taxa and estimated divergence dates. With our dataset we recovered 25 reciprocally monophyletic lineages, as well as an admixed clade containing Lepilemur mittermeieri and Lepilemur dorsalis Using modern distribution data, an ancestral area reconstruction and an ecological vicariance analysis were performed to trace the history of diversification and to test biogeographic hypotheses...
October 3, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27634536/origin-of-amniote-sex-chromosomes-an-ancestral-super-sex-chromosome-or-common-requirements
#8
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...
September 15, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27630131/dynamic-sequence-evolution-of-a-sex-associated-b-chromosome-in-lake-malawi-cichlid-fish
#9
Frances E Clark, Matthew A Conte, Irani A Ferreira-Bravo, Andreia B Poletto, Cesar Martins, Thomas D Kocher
B chromosomes are extra chromosomes found in many species of plants, animals, and fungi. B chromosomes often manipulate common cellular processes to increase their frequency, sometimes to the detriment of organismal fitness. Here, we characterize B chromosomes in several species of Lake Malawi cichlid fish. Whole genome sequencing of Metriaclima zebra "Boadzulu" individuals revealed blocks of sequence with unusually high sequence coverage, indicative of increased copy number of those sequences. These regions of high sequence coverage were found only in females...
September 14, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27614083/accumulation-of-deleterious-mutations-on-the-neo-y-chromosome-of-japan-sea-stickleback-gasterosteus-nipponicus
#10
Kohta Yoshida, Takashi Makino, Jun Kitano
Degeneration of Y chromosomes is a common evolutionary path of XY sex chromosome systems. Recent genomic studies in flies and plants have revealed that even young neo-sex chromosomes with the age of a few million years show signs of Y degeneration, such as the accumulation of nonsense and frameshift mutations. However, it remains unclear whether neo-Y chromosomes also show rapid degeneration in fishes, which often have homomorphic sex chromosomes. Here, we investigated whether a neo-Y chromosome of Japan Sea stickleback (Gasterosteus nipponicus), which was formed by a Y-autosome fusion within the last 2 million years, accumulates deleterious mutations...
September 10, 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27580921/table-of-contents
#11
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27580920/subscriptions-page
#12
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27580919/editorial-board
#13
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27580918/front-cover
#14
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27580917/back-cover
#15
(no author information available yet)
No abstract text is available yet for this article.
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27511190/genomic-methods-take-the-plunge-recent-advances-in-high-throughput-sequencing-of-marine-mammals
#16
REVIEW
Kristina M Cammen, Kimberly R Andrews, Emma L Carroll, Andrew D Foote, Emily Humble, Jane I Khudyakov, Marie Louis, Michael R McGowen, Morten Tange Olsen, Amy M Van Cise
The dramatic increase in the application of genomic techniques to non-model organisms (NMOs) over the past decade has yielded numerous valuable contributions to evolutionary biology and ecology, many of which would not have been possible with traditional genetic markers. We review this recent progression with a particular focus on genomic studies of marine mammals, a group of taxa that represent key macroevolutionary transitions from terrestrial to marine environments and for which available genomic resources have recently undergone notable rapid growth...
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27489253/novel-concordance-between-geographic-environmental-and-genetic-structure-in-the-ecological-generalist-prickly-sculpin-cottus-asper-in-california
#17
Jason Baumsteiger, Andrew P Kinziger, Andres Aguilar
Ecological generalists may contain a wealth of information concerning diversity, ecology, and geographic connectivity throughout their range. We explored these ideas in prickly sculpin (Cottus asper), a small generalist freshwater fish species where coastal forms have potentially undergone radiations into inland lacustrine and riverine environments. Using a 962bp cytochrome b mtDNA marker and 11 microsatellites, we estimated diversity, divergence times, gene flow, and structure among populations at 43 locations throughout California...
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27489252/heritability-of-recurrent-exertional-rhabdomyolysis-in-standardbred-and-thoroughbred-racehorses-derived-from-snp-genotyping-data
#18
Elaine M Norton, James R Mickelson, Matthew M Binns, Sarah C Blott, Paul Caputo, Cajsa M Isgren, Annette M McCoy, Alison Moore, Richard J Piercy, June E Swinburne, Mark Vaudin, Molly E McCue
Recurrent exertional rhabdomyolysis (RER) in Thoroughbred and Standardbred racehorses is characterized by episodes of muscle rigidity and cell damage that often recur upon strenuous exercise. The objective was to evaluate the importance of genetic factors in RER by obtaining an unbiased estimate of heritability in cohorts of unrelated Thoroughbred and Standardbred racehorses. Four hundred ninety-one Thoroughbred and 196 Standardbred racehorses were genotyped with the 54K or 74K SNP genotyping arrays. Heritability was calculated from genome-wide SNP data with a mixed linear and Bayesian model, utilizing the standard genetic relationship matrix (GRM)...
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27481774/a-dna-based-assessment-of-the-phylogenetic-position-of-a-morphologically-distinct-anchialine-lake-restricted-seahorse
#19
Emily Rose, Heather D Masonjones, Adam G Jones
Isolated populations provide special opportunities to study local adaptation and incipient speciation. In some cases, however, morphological evolution can obscure the taxonomic status of recently founded populations. Here, we use molecular markers to show that an anchialine-lake-restricted population of seahorses, originally identified as Hippocampus reidi, appears on the basis of DNA data to be Hippocampus erectus We collected seahorses from Sweetings Pond, on Eleuthera Island, Bahamas, during the summer of 2014...
November 2016: Journal of Heredity
https://www.readbyqxmd.com/read/27466386/panmixia-in-a-critically-endangered-fish-the-totoaba-totoaba-macdonaldi-in-the-gulf-of-california
#20
Fausto Valenzuela-Quiñonez, Juan A De-Anda-Montañez, Elizabeth Gilbert-Horvath, John Carlos Garza, Francisco J García-De León
Conservation of the evolutionary legacy of endangered species is a key component for long-term persistence. Totoaba is a long-lived fish endemic to the Gulf of California and is considered critically endangered. There is currently a debate concerning its conservation status and whether it can be used as a fishery resource. Unfortunately, basic information on biological and genetic population structure of the species is lacking. We sampled 313 individuals and employed 16 microsatellite loci and 3 mitochondrial DNA markers (16S, 547 pb; COI, 619 pb; control region, 650 pb) to assess population structure and demography of totoaba in the Gulf of California, with samples from locations that encompass nearly all of its recognized geographic distribution...
November 2016: Journal of Heredity
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