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https://www.readbyqxmd.com/read/28616163/a-genomic-assessment-of-species-boundaries-and-hybridization-in-a-group-of-highly-polymorphic-anoles-distichus-species-complex
#1
Daniel J MacGuigan, Anthony J Geneva, Richard E Glor
Delimiting young species is one of the great challenges of systematic biology, particularly when the species in question exhibit little morphological divergence. Anolis distichus, a trunk anole with more than a dozen subspecies that are defined primarily by dewlap color, may actually represent several independent evolutionary lineages. To test this, we utilized amplified fragment length polymorphisms (AFLP) genome scans and genetic clustering analyses in conjunction with a coalescent-based species delimitation method...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28533977/serotonergic-activation-during-courtship-and-aggression-in-the-brown-anole-anolis-sagrei
#2
Jacob T Hartline, Alexandra N Smith, David Kabelik
The role of serotonin (5-hydroxytryptamine, 5-HT) in social behavior regulation is not fully understood. While 5-HT release in nuclei of the social behavior network has generally been associated with inhibition of aggressive behavior across multiple classes of vertebrates, less is known about its effects on sexual, especially non-copulatory courtship display behaviors. Furthermore, most research has examined effects at 5-HT release sites, while studies examining the behavioral relevance of source cell populations have generated contradictory findings...
2017: PeerJ
https://www.readbyqxmd.com/read/28515206/widespread-ecomorphological-convergence-in-multiple-fish-families-spanning-the-marine-freshwater-interface
#3
Aaron M Davis, Ricardo Betancur-R
The theoretical definition and quantification of convergence is an increasingly topical focus in evolutionary research, with particular growing interest on study scales spanning deep phylogenetic divergences and broad geographical areas. While much progress has recently been made in understanding the role of convergence in driving terrestrial (e.g. anole lizards) and aquatic (e.g. cichlids) radiations, little is known about its macroevolutionary effects across environmental gradients. This study uses a suite of recently developed comparative approaches integrating diverse aspects of morphology, dietary data, habitat affiliation and phylogeny to assess convergence across several well-known tropical-temperate fish families in the percomorph suborder Terapontoidei, a clade with considerable phenotypic and ecological diversity radiating in both marine and freshwater environments...
May 17, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28502765/biogeographic-links-between-southern-atlantic-forest-and-western-south-america-rediscovery-re-description-and-phylogenetic-relationships-of-two-rare-montane-anole-lizards-from-brazil
#4
Ivan Prates, Paulo Roberto Melo-Sampaio, Leandro de Oliveira Drummond, Mauro Teixeira, Miguel Trefaut Rodrigues, Ana Carolina Carnaval
Data on species ranges and phylogenetic relationships are key in historical biogeographical inference. In South America, our understanding of the evolutionary processes that underlie biodiversity patterns varies greatly across regions. Little is known, for instance, about the drivers of high endemism in the southern montane region of the Atlantic Rainforest. In this region, former biogeographic connections with other South American ecosystems have been invoked to explain the phylogenetic affinities of a number of endemic taxa...
May 11, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28459829/predictability-in-evolution-adaptation-of-the-bonaire-anole-anolis-bonairensis-to-an-extreme-environment
#5
Roger S Thorpe
The extent to which evolution is deterministic (predictable), or random, is a fundamental question in evolution. This case study attempts to determine the extent to which interspecific divergence can be predicted from intraspecific trends related species. The mountainous Lesser Antilles are occupied by one or two anole species with very substantial intraspecific differences in the quantitative traits between xeric and rainforest habitats. These ecologically determined differences tend to be in parallel in each island species...
2017: PloS One
https://www.readbyqxmd.com/read/28405283/anolis-lizards-as-biocontrol-agents-in-mainland-and-island-agroecosystems
#6
Ivan V Monagan, Jonathan R Morris, Alison R Davis Rabosky, Ivette Perfecto, John Vandermeer
Our knowledge of ecological interactions that bolster ecosystem function and productivity has broad applications to the management of agricultural systems. Studies suggest that the presence of generalist predators in agricultural landscapes leads to a decrease in the abundance of herbivorous pests, but our understanding of how these interactions vary across taxa and along gradients of management intensity and eco-geographic space remains incomplete. In this study, we assessed the functional response and biocontrol potential of a highly ubiquitous insectivore (lizards in the genus Anolis) on the world's most important coffee pest, the coffee berry borer (Hypothalemus hampei)...
April 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28381311/cystic-calculus-in-a-laboratory-housed-green-anole-anolis-carolinensis
#7
Leslie L Birke, Ann M Cespedes, Emma R Schachner, Simon P Lailvaux
An adult, male, wild-caught, laboratory-housed green anole (Anolis carolinensis) on a locomotor performance study was presented for anorexia. The anole exhibited a 26% weight loss and a thin body condition but was otherwise alert and active. Despite supportive care, the anole's clinical condition deteriorated, necessitating euthanasia. Postmortem examination revealed a 4.5 mm × 2.5-mm cystic calculus, which consisted entirely of sodium urate. Here we describe the clinical findings and locomotor consequences of this disease in a green anole...
March 1, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28370951/multivariate-genetic-architecture-of-the-anolis-dewlap-reveals-both-shared-and-sex-specific-features-of-a-sexually-dimorphic-ornament
#8
R M Cox, R A Costello, B E Camber, J W McGlothlin
Darwin viewed the ornamentation of females as an indirect consequence of sexual selection on males and the transmission of male phenotypes to females via the 'laws of inheritance'. Although a number of studies have supported this view by demonstrating substantial between-sex genetic covariance for ornament expression, the majority of this work has focused on avian plumage. Moreover, few studies have considered the genetic basis of ornaments from a multivariate perspective, which may be crucial for understanding the evolution of sex differences in general, and of complex ornaments in particular...
March 31, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28345630/identification-and-comparative-analysis-of-the-epidermal-differentiation-complex-in-snakes
#9
Karin Brigit Holthaus, Veronika Mlitz, Bettina Strasser, Erwin Tschachler, Lorenzo Alibardi, Leopold Eckhart
The epidermis of snakes efficiently protects against dehydration and mechanical stress. However, only few proteins of the epidermal barrier to the environment have so far been identified in snakes. Here, we determined the organization of the Epidermal Differentiation Complex (EDC), a cluster of genes encoding protein constituents of cornified epidermal structures, in snakes and compared it to the EDCs of other squamates and non-squamate reptiles. The EDC of snakes displays shared synteny with that of the green anole lizard, including the presence of a cluster of corneous beta-protein (CBP)/beta-keratin genes...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28343564/embryos-of-non-native-anoles-are-robust-to-urban-thermal-environments
#10
Sarin Tiatragul, Audeline Kurniawan, Jason J Kolbe, Daniel A Warner
The transformation of natural habitats into urban landscapes dramatically alters thermal environments, which in turn, can impact local biota. Ectothermic organisms that are oviparous are particularly sensitive to these altered environments because their embryos cannot behaviorally thermoregulate and the surrounding environment determines the temperature experienced during development. We studied the effects of urban and forested thermal environments on embryo development and hatchling phenotypes in two non-native lizards (Anolis sagrei and A...
April 2017: Journal of Thermal Biology
https://www.readbyqxmd.com/read/28334227/a-phylogenetic-biogeographic-and-taxonomic-study-of-all-extant-species-of-anolis-squamata-iguanidae
#11
Steven Poe, Adrián Nieto-Montes de Oca, Omar Torres-Carvajal, Kevin de Queiroz, Julián A Velasco, Brad Truett, Levi N Gray, Mason J Ryan, Gunther Köhler, Fernando Ayala-Varela, Ian Latella
Anolis lizards (anoles) are textbook study organisms in evolution and ecology. Although several topics in evolutionary biology have been elucidated by the study of anoles, progress in some areas has been hampered by limited phylogenetic information on this group. Here we present a phylogenetic analysis of all 379 extant species of Anolis, with new phylogenetic data for 139 species including new DNA data for 101 species. We use the resulting estimates as a basis for defining anole clade names under the principles of phylogenetic nomenclature and to examine the biogeographic history of anoles...
February 27, 2017: Systematic Biology
https://www.readbyqxmd.com/read/28315859/heteromorphism-of-homomorphic-sex-chromosomes-in-two-anole-species-squamata-dactyloidae-revealed-by-synaptonemal-complex-analysis
#12
Artem P Lisachov, Vladimir A Trifonov, Massimo Giovannotti, Malcolm A Ferguson-Smith, Pavel M Borodin
Iguanians (Pleurodonta) are one of the reptile lineages that, like birds and mammals, have sex chromosomes of ancient origin. In most iguanians these are microchromosomes, making a distinction between the X and Y as well as between homeologous sex chromosomes in other species difficult. Meiotic chromosome analysis may be used to elucidate their differentiation, because meiotic prophase chromosomes are longer and less condensed than metaphase chromosomes, and the homologues are paired with each other, revealing minor heteromorphisms...
2017: Cytogenetic and Genome Research
https://www.readbyqxmd.com/read/28300027/cystic-calculus-in-a-laboratory-housed-green-anole-anolis-carolinensis
#13
Leslie L Birke Ann M Cespedes Emma R Schachner And Simon P Lailvaux
An adult, male, wild-caught, laboratory-housed green anole (Anolis carolinensis) on a locomotor performance study was presented for anorexia. The anole exhibited a 26% weight loss and a thin body condition but was otherwise alert and active. Despitesupportive care, the anole's clinical condition deteriorated, necessitating euthanasia. Postmortem examination revealed a 4.5 mm × 2.5-mm cystic calculus, which consisted entirely of sodium urate. Here we describe the clinical findings and locomotor consequences of this disease in a green anole...
March 15, 2017: Comparative Medicine
https://www.readbyqxmd.com/read/28221827/hormonally-mediated-increases-in-sex-biased-gene-expression-accompany-the-breakdown-of-between-sex-genetic-correlations-in-a-sexually-dimorphic-lizard
#14
Robert M Cox, Christian L Cox, Joel W McGlothlin, Daren C Card, Audra L Andrew, Todd A Castoe
The evolution of sexual dimorphism is predicted to occur through reductions in between-sex genetic correlations (rmf) for shared traits, but the physiological and genetic mechanisms that facilitate these reductions remain largely speculative. Here, we use a paternal half-sibling breeding design in captive brown anole lizards (Anolis sagrei) to show that the development of sexual size dimorphism is mirrored by the ontogenetic breakdown of rmf for body size and growth rate. Using transcriptome data from the liver (which integrates growth and metabolism), we show that sex-biased gene expression also increases dramatically between ontogenetic stages bracketing this breakdown of rmf...
March 2017: American Naturalist
https://www.readbyqxmd.com/read/28194754/requirement-of-extracellular-ca-2-binding-to-specific-amino-acids-for-heat-evoked-activation-of-trpa1
#15
Erkin Kurganov, Shigeru Saito, Claire Tanaka Saito, Makoto Tominaga
KEY POINTS: We found that extracellular Ca(2+) , but not other divalent cations (Mg(2+) and Ba(2+) ) or intracellular Ca(2+) , is involved in heat-evoked activation of green anole (ga) TRPA1. Heat-evoked activation of chicken (ch) and rat snake (rs) TRPA1 does not depend solely on extracellular Ca(2+) . Neutralization of acidic amino acids on the outer surface of TRPA1 by extracellular Ca(2+) is important for heat-evoked large activation of gaTRPA1, chTRPA1 and rsTRPA1. ABSTRACT: Transient receptor potential ankyrin 1 (TRPA1) is a homotetrameric non-selective cation-permeable channel that has six transmembrane domains and cytoplasmic N- and C-termini...
April 15, 2017: Journal of Physiology
https://www.readbyqxmd.com/read/28187160/the-effects-of-dopamine-receptor-1-and-2-agonists-and-antagonists-on-sexual-and-aggressive-behaviors-in-male-green-anoles
#16
Alexandra N Smith, David Kabelik
The propensity to exhibit social behaviors during interactions with same-sex and opposite-sex conspecifics is modulated by various neurotransmitters, including dopamine. Dopamine is a conserved neurotransmitter among vertebrates and dopaminergic receptors are also highly conserved among taxa. Activation of D1 and D2 dopamine receptor subtypes has been shown to modulate social behaviors, especially in mammalian and avian studies. However, the specific behavioral functions of these receptors vary across taxa...
2017: PloS One
https://www.readbyqxmd.com/read/28167809/exercise-training-reveals-trade-offs-between-endurance-performance-and-immune-function-but-does-not-influence-growth-in-juvenile-lizards
#17
Jerry F Husak, Jordan C Roy, Matthew B Lovern
Acquired energetic resources allocated to a particular trait cannot then be re-allocated to a different trait. This often results in a trade-off between survival and reproduction for the adults of many species, but such a trade-off may be manifested differently in juveniles not yet capable of reproduction. Whereas adults may allocate resources to current and/or future reproduction, juveniles can only allocate to future reproduction. Thus, juveniles should allocate resources toward traits that increase survival and their chances of future reproductive success...
April 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28064439/eugenol-specialty-chemical-production-in-transgenic-poplar-populus-tremula-%C3%A3-p-alba-field-trials
#18
Da Lu, Xianghe Yuan, Sung-Jin Kim, Joaquim V Marques, P Pawan Chakravarthy, Syed G A Moinuddin, Randi Luchterhand, Barri Herman, Laurence B Davin, Norman G Lewis
A foundational study assessed effects of biochemical pathway introduction into poplar to produce eugenol, chavicol, p-anol, isoeugenol, and their sequestered storage products, from potentially available substrates, coniferyl and p-coumaryl alcohols. At the onset, it was unknown whether significant carbon flux to monolignols vs other phenylpropanoid (acetate) pathway metabolites would be kinetically favored. Various transgenic poplar lines generated eugenol and chavicol glucosides in ca. 0.45% (~0.35 and ~0...
January 8, 2017: Plant Biotechnology Journal
https://www.readbyqxmd.com/read/28003450/comparative-tests-of-the-role-of-dewlap-size-in-anolis-lizard-speciation
#19
Travis Ingram, Alexis Harrison, D Luke Mahler, María Del Rosario Castañeda, Richard E Glor, Anthony Herrel, Yoel E Stuart, Jonathan B Losos
Phenotypic traits may be linked to speciation in two distinct ways: character values may influence the rate of speciation or diversification in the trait may be associated with speciation events. Traits involved in signal transmission, such as the dewlap of Anolis lizards, are often involved in the speciation process. The dewlap is an important visual signal with roles in species recognition and sexual selection, and dewlaps vary among species in relative size as well as colour and pattern. We compile a dataset of relative dewlap size digitized from photographs of 184 anole species from across the genus' geographical range...
December 28, 2016: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/27980123/integrating-gastrocnemius-force-length-properties-in-vivo-activation-and-operating-lengths-reveals-how-anolis-deal-with-ecological-challenges
#20
Kathleen L Foster, Timothy E Higham
A central question in biology is how animals successfully behave under complex natural conditions. Although changes in locomotor behaviour, motor control, and force production in relation to incline are commonly examined, a wide range of other factors, including a range of perch diameters, pervades arboreal habitats. Moving on different substrate diameters requires considerable alteration of body and limb posture, likely causing significant shifts in the lengths of the muscle-tendon units powering locomotion...
December 15, 2016: Journal of Experimental Biology
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