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https://www.readbyqxmd.com/read/27864050/ancestry-trumps-experience-transgenerational-but-not-early-life-stress-affects-the-adult-physiological-stress-response
#1
Gail L McCormick, Travis R Robbins, Sonia A Cavigelli, Tracy Langkilde
Exposure to stressors can affect an organism's physiology and behavior as well as that of its descendants (e.g. through maternal effects, epigenetics, and/or selection). We examined the relative influence of early life vs. transgenerational stress exposure on adult stress physiology in a species that has populations with and without ancestral exposure to an invasive predator. We raised offspring of eastern fence lizards (Sceloporus undulatus) from sites historically invaded (high stress) or uninvaded (low stress) by predatory fire ants (Solenopsis invicta) and determined how this different transgenerational exposure to stress interacted with the effects of early life stress exposure to influence the physiological stress response in adulthood...
November 15, 2016: Hormones and Behavior
https://www.readbyqxmd.com/read/27775197/survival-by-genotype-patterns-at-mc1r-are-not-black-and-white-at-the-white-sands-ecotone
#2
S Des Roches, R Sollmann, K Calhoun, A P Rothstein, E B Rosenblum
Measuring links among genotype, phenotype and survival in the wild has long been a focus of studies of adaptation. We conducted a 4-year capture-recapture study to measure survival by genotype and phenotype in the Southwestern Fence Lizard (Sceloporus cowlesi) at the White Sands ecotone (transition area between white sands and dark soil habitats). We report several unanticipated findings. First, in contrast with previous work showing that cryptic blanched coloration in S. cowlesi from the heart of the dunes is associated with mutations in the melanocortin-1 receptor gene (Mc1r), ecotonal S...
October 24, 2016: Molecular Ecology
https://www.readbyqxmd.com/read/27734634/habitat-use-in-eight-populations-of-sceloporus-grammicus-squamata-phrynosomatidae-from-the-mexican-plateau
#3
A Leyte-Manrique, U Hernández-Salinas, A Ramírez-Bautista, V Mata-Silva, J C Marshall
Studies on habitat use have often helped explain observed variation in morphology, behavior, and reproductive characteristics among populations within a single species. Here we analyze morphological and ecological characteristics of individuals from the Sceloporus grammicus species complex from seven different localities (El Cerezo: CER, Pachuca: PAC, Huichapan: HUI, Emiliano Zapata: EZA, San Miguel Regla: SMR, La Mojonera: LMJ, and La Manzana: LMZ) in the state of Hidalgo, and one locality (Cahuacán) in the State of México...
October 13, 2016: Integrative Zoology
https://www.readbyqxmd.com/read/27722876/evolutionary-interactions-between-visual-and-chemical-signals-chemosignals-compensate-for-the-loss-of-a-visual-signal-in-male-sceloporus-lizards
#4
Jake A Pruett, J Jaime Zúñiga-Vega, Stephanie M Campos, Helena A Soini, Milos V Novotny, Cuauhcihuatl Vital-García, Emília P Martins, Diana K Hews
Animals rely on multimodal signals to obtain information from conspecifics through alternative sensory systems, and the evolutionary loss of a signal in one modality may lead to compensation through increased use of signals in an alternative modality. We investigated associations between chemical signaling and evolutionary loss of abdominal color patches in males of four species (two plain-bellied and two colorful-bellied) of Sceloporus lizards. We conducted field trials to compare behavioral responses of male lizards to swabs with femoral gland (FG) secretions from conspecific males and control swabs (clean paper)...
November 2016: Journal of Chemical Ecology
https://www.readbyqxmd.com/read/27597293/populations-of-the-lizard-sceloporus-occidentalis-that-differ-in-melanization-have-different-rates-of-wound-healing
#5
Ryan J Seddon, Diana K Hews
Mechanisms underlying production of animal coloration can affect key traits besides coloration. Melanin, and molecules regulating melanin, can directly and indirectly affect other phenotypic traits, such as immune function. We asked whether melanization and a whole-organism measure of immune function are associated with wound healing. Working with two populations of adult male western fence lizards, Sceloporus occidentalis, we compared one high-elevation and one low-elevation population in California where individuals are increasingly darker at higher elevations, measuring wound healing rates...
September 6, 2016: Journal of Experimental Zoology. Part A, Ecological Genetics and Physiology
https://www.readbyqxmd.com/read/27558698/lizards-fail-to-plastically-adjust-nesting-behavior-or-thermal-tolerance-as-needed-to-buffer-populations-from-climate-warming
#6
Rory S Telemeco, Brooke Fletcher, Ofir Levy, Angela Riley, Yesenia Rodriguez-Sanchez, Colton Smith, Collin Teague, Amanda Waters, Michael J Angilletta, Lauren B Buckley
Although observations suggest the potential for phenotypic plasticity to allow adaptive responses to climate change, few experiments have assessed that potential. Modeling suggests that Sceloporus tristichus lizards will need increased nest depth, shade cover, or embryonic thermal tolerance to avoid reproductive failure resulting from climate change. To test for such plasticity, we experimentally examined how maternal temperatures affect nesting behavior and embryonic thermal sensitivity. The temperature regime that females experienced while gravid did not affect nesting behavior, but warmer temperatures at the time of nesting reduced nest depth...
August 25, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27420780/including-fossils-in-phylogenetic-climate-reconstructions-a-deep-time-perspective-on-the-climatic-niche-evolution-and-diversification-of-spiny-lizards-sceloporus
#7
A Michelle Lawing, P David Polly, Diana K Hews, Emília P Martins
Fossils and other paleontological information can improve phylogenetic comparative method estimates of phenotypic evolution and generate hypotheses related to species diversification. Here, we use fossil information to calibrate ancestral reconstructions of suitable climate for Sceloporus lizards in North America. Integrating data from the fossil record, general circulation models of paleoclimate during the Miocene, climate envelope modeling, and phylogenetic comparative methods provides a geographically and temporally explicit species distribution model of Sceloporus-suitable habitat through time...
August 2016: American Naturalist
https://www.readbyqxmd.com/read/27408562/amphibians-and-reptiles-of-the-state-of-nuevo-le%C3%A3-n-mexico
#8
Julio A Lemos-Espinal, Geoffrey R Smith, Alexander Cruz
We compiled a check list of the herpetofauna of Nuevo León. We documented 132 species (23 amphibians, 109 reptiles), representing 30 families (11 amphibians, 19 reptiles) and 73 genera (17 amphibians, 56 reptiles). Only two species are endemic to Nuevo León. Nuevo León contains a relatively high richness of lizards in the genus Sceloporus. Overlap in the herpetofauna of Nuevo León and states it borders is fairly extensive. Of 130 native species, 102 are considered species of Least Concern in the IUCN red list, four are listed as Vulnerable, five are listed as Near Threatened, and four are listed as Endangered...
2016: ZooKeys
https://www.readbyqxmd.com/read/27408554/amphibians-and-reptiles-of-the-state-of-coahuila-mexico-with-comparison-with-adjoining-states
#9
Julio A Lemos-Espinal, Geoffrey R Smith
We compiled a checklist of the amphibians and reptiles of the state of Coahuila, Mexico. The list comprises 133 species (24 amphibians, 109 reptiles), representing 27 families (9 amphibians, 18 reptiles) and 65 genera (16 amphibians, 49 reptiles). Coahuila has a high richness of lizards in the genus Sceloporus. Coahuila has relatively few state endemics, but has several regional endemics. Overlap in the herpetofauna of Coahuila and bordering states is fairly extensive. Of the 132 species of native amphibians and reptiles, eight are listed as Vulnerable, six as Near Threatened, and six as Endangered in the IUCN Red List...
2016: ZooKeys
https://www.readbyqxmd.com/read/27137079/phenotypic-correlates-of-melanization-in-two-sceloporus-occidentalis-phrynosomatidae-populations-behavior-androgens-stress-reactivity-and-ectoparasites
#10
Ryan J Seddon, Diana K Hews
Mechanisms underlying production of animal coloration can affect key traits besides coloration. Melanin, and molecules regulating melanin, can directly and indirectly affect other phenotypic traits including aggression, stress-reactivity, and immune function. We studied correlation of melanization with these other traits, comparing within- and between-population differences of adult male western fence lizards, Sceloporus occidentalis. We compared one high- and one low-elevation population in California where individuals are increasingly darker at higher elevations, working during comparable periods of the breeding season at each site (first egg clutch)...
September 1, 2016: Physiology & Behavior
https://www.readbyqxmd.com/read/27006602/two-new-species-of-parapharyngodon-parasites-of-sceloporus-pyrocephalus-with-a-key-to-the-species-found-in-mexico-nematoda-pharyngodonidae
#11
Edgar Uriel Garduño-Montes de Oca, Rosario Mata-López, Virginia León-Règagnon
Two new species of Parapharyngodon collected from the intestine of the Mexican boulder spiny lizard Sceloporus pyrocephalus are described. This study increases to 49 the number of valid species assigned to Parapharyngodon worldwide, 11 of them distributed in Mexico. Males of the two new species share the presence of four pairs of caudal papillae, an anterior echinate cloacal lip and the presence of lateral alae; however, both differ from each other in lateral alae extension and echinate cloacal anterior lip morphology...
2016: ZooKeys
https://www.readbyqxmd.com/read/27000803/phylogenomics-of-a-rapid-radiation-is-chromosomal-evolution-linked-to-increased-diversification-in-north-american-spiny-lizards-genus-sceloporus
#12
Adam D Leaché, Barbara L Banbury, Charles W Linkem, Adrián Nieto-Montes de Oca
BACKGROUND: Resolving the short phylogenetic branches that result from rapid evolutionary diversification often requires large numbers of loci. We collected targeted sequence capture data from 585 nuclear loci (541 ultraconserved elements and 44 protein-coding genes) to estimate the phylogenetic relationships among iguanian lizards in the North American genus Sceloporus. We tested for diversification rate shifts to determine if rapid radiation in the genus is correlated with chromosomal evolution...
2016: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/26929815/reproductive-cycles-and-reproductive-strategies-among-populations-of-the-rose-bellied-lizard-sceloporus-variabilis-squamata-phrynosomatidae-from-central-mexico
#13
Raciel Cruz-Elizalde, Aurelio Ramírez-Bautista
Species with wide distribution, generally show variations in life history characteristics, which can be attributed to environmental causes. In this study, we analyzed the reproductive cycle and reproductive characteristics from three populations (Atlapexco, San Pablo Tetlapayac, and Santa Catarina) of the lizard Sceloporus variabilis from central Mexico. The specific goal of this study was to evaluate life history characteristics such as reproductive period extent, SVL (snout-vent length) at sexual maturity, clutch size, egg mass and volume, and RCM (relative clutch mass)...
March 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/26842787/ornamentation-age-and-survival-of-female-striped-plateau-lizards-sceloporus-virgatus
#14
Stacey L Weiss
Individuals with greater expression of secondary sexual traits are often older and have higher survivorship than individuals with lower expression; if so, assessment of such indicator traits may provide genetic and/or direct benefits to potential mates. I examined the relationship between ornament expression, age, and survival in the striped plateau lizard, Sceloporus virgatus, a species with female-specific ornamentation that honestly signals reproductive quality. I followed a group of females from 2008 to 2013, examined ornament color and size as females aged, and compared ornamentation of survivors versus non-survivors...
April 2016: Die Naturwissenschaften
https://www.readbyqxmd.com/read/26840620/ontogenetic-variation-in-the-thermal-biology-of-yarrow-s-spiny-lizard-sceloporus-jarrovii
#15
Anthony L Gilbert, Matthew S Lattanzio
Climate change is rapidly altering the way current species interact with their environment to satisfy life-history demands. In areas anticipated to experience extreme warming, rising temperatures are expected to diminish population growth, due either to environmental degradation, or the inability to tolerate novel temperature regimes. Determining how at risk ectotherms, and lizards in particular, are to changes in climate traditionally emphasizes the thermal ecology and thermal sensitivity of physiology of adult members of a population...
2016: PloS One
https://www.readbyqxmd.com/read/26690819/ultrastructural-analysis-of-spermiogenesis-in-the-eastern-fence-lizard-sceloporus-undulatus-squamata-phrynosomatidae
#16
Justin L Rheubert, David M Sever, Dustin S Siegel, Kevin M Gribbins
Studies on reptilian sperm morphology have shown that variation exists at various taxonomic levels but studies on the ontogeny of variation are rare. Sperm development follows a generalized bauplan that includes acrosome development, nuclear condensation and elongation, and flagellar development. However, minute differences can be observed such as the presence/absence of manchette microtubules, structural organization during nuclear condensation, and presence/absence of a nuclear lacuna. The purpose of this investigation was to examine sperm development within the Sceloporus genus...
February 2016: Micron: the International Research and Review Journal for Microscopy
https://www.readbyqxmd.com/read/26456391/direct-and-indirect-effects-of-petroleum-production-activities-on-the-western-fence-lizard-sceloporus-occidentalis-as-a-surrogate-for-the-dunes-sagebrush-lizard-sceloporus-arenicolus
#17
Scott M Weir, Ami Knox, Larry G Talent, Todd A Anderson, Christopher J Salice
The dunes sagebrush lizard (Sceloporus arenicolus) is a habitat specialist of conservation concern limited to shin oak sand dune systems of New Mexico and Texas (USA). Because much of the dunes sagebrush lizard's habitat occurs in areas of high oil and gas production, there may be direct and indirect effects of these activities. The congeneric Western fence lizard (Sceloporus occidentalis) was used as a surrogate species to determine direct effects of 2 contaminants associated with oil and gas drilling activities in the Permian Basin (NM and TX, USA): herbicide formulations (Krovar and Quest) and hydrogen sulfide gas (H2S)...
May 2016: Environmental Toxicology and Chemistry
https://www.readbyqxmd.com/read/26363411/the-population-genomics-of-rapid-adaptation-disentangling-signatures-of-selection-and-demography-in-white-sands-lizards
#18
Stefan Laurent, Susanne P Pfeifer, Matthew L Settles, Samuel S Hunter, Kayla M Hardwick, Louise Ormond, Vitor C Sousa, Jeffrey D Jensen, Erica Bree Rosenblum
Understanding the process of adaptation during rapid environmental change remains one of the central focal points of evolutionary biology. The recently formed White Sands system of southern New Mexico offers an outstanding example of rapid adaptation, with a variety of species having rapidly evolved blanched forms on the dunes that contrast with their close relatives in the surrounding dark soil habitat. In this study, we focus on two of the White Sands lizard species, Sceloporus cowlesi and Aspidoscelis inornata, for which previous research has linked mutations in the melanocortin-1 receptor gene (Mc1r) to blanched coloration...
January 2016: Molecular Ecology
https://www.readbyqxmd.com/read/26336240/sylvatic-infestation-of-oklahoma-reptiles-with-immature-ixodes-scapularis-acari-ixodidae
#19
Stephen D Garvin, Bruce H Noden, Jack W Dillwith, Stanley F Fox, Mark E Payton, Robert W Barker
Reptiles were collected in nine counties in Oklahoma from September 2002 to May 2004 and examined for Ixodes scapularis (Say) larvae and nymphs to determine seasonal incidence and prevalence of these ticks. In total, 209 reptile specimens consisting of nine species of lizards and seven species of snakes were collected. Plestiodon fasciatus (L.) was the most numerous species collected (55%) followed by Sceloporus undulatus (Latreille) (17%) and Scincella lateralis (Say) (11%). Less than 10 individuals were collected for all remaining reptile species...
September 2015: Journal of Medical Entomology
https://www.readbyqxmd.com/read/26309322/effect-of-temperature-on-feeding-period-of-larval-blacklegged-ticks-acari-ixodidae-on-eastern-fence-lizards
#20
Eric L Rulison, Roger A Lebrun, Howard S Ginsberg
Ambient temperature can influence tick development time, and can potentially affect tick interactions with pathogens and with vertebrate hosts. We studied the effect of ambient temperature on duration of attachment of larval blacklegged ticks, Ixodes scapularis Say, to eastern fence lizards, Sceloporus undulatus (Bosc & Daudin). Feeding periods of larvae that attached to lizards under preferred temperature conditions for the lizards (WARM treatment: temperatures averaged 36.6°C at the top of the cage and 25...
November 1, 2014: Journal of Medical Entomology
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