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https://www.readbyqxmd.com/read/28745397/tempo-and-mode-of-performance-evolution-across-multiple-independent-origins-of-adhesive-toe-pads-in-lizards
#1
Travis J Hagey, Josef C Uyeda, Kristen E Crandell, Jorn A Cheney, Kellar Autumn, Luke J Harmon
Understanding macroevolutionary dynamics of trait evolution is an important endeavor in evolutionary biology. Ecological opportunity can liberate a trait as it diversifies through trait space, while genetic and selective constraints can limit diversification. While many studies have examined the dynamics of morphological traits, diverse morphological traits may yield the same or similar performance and as performance is often more proximately the target of selection, examining only morphology may give an incomplete understanding of evolutionary dynamics...
July 26, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28725379/field-estimates-of-parentage-reveal-sexually-antagonistic-selection-on-body-size-in-a-population-of-anolis-lizards
#2
Mary C Duryea, Patrick Bergeron, Zachary Clare-Salzler, Ryan Calsbeek
Sexual dimorphism evolves when selection favors different phenotypic optima between the sexes. Such sexually antagonistic selection creates intralocus sexual conflict when traits are genetically correlated between the sexes and have sex-specific optima. Brown anoles are highly sexually dimorphic: Males are on average 30% longer than females and 150% heavier in our study population. Viability selection on body size is known to be sexually antagonistic, and directional selection favors large male size whereas stabilizing selection constrains females to remain small...
October 2016: Ecology and Evolution
https://www.readbyqxmd.com/read/28714214/climate-related-environmental-variation-in-a-visual-signalling-device-the-male-and-female-dewlap-in-anolis-sagrei-lizards
#3
Tess Driessens, Simon Baeckens, Manuela Balzarolo, Bieke Vanhooydonck, Katleen Huyghe, Raoul Van Damme
Animals communicate using a variety of signals that differ dramatically among and within species. The astonishing dewlap diversity in anoles has attracted considerable attention in this respect. Yet, the evolutionary processes behind it remain elusive and have mostly been explored for males only. Here, we considered Anolis sagrei males and females to study signal divergence among populations. First, we assessed the degree of variation in dewlap design (size, pattern, colour) and displays by comparing 17 populations distributed across the Caribbean...
July 17, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28659453/human-impacts-reduce-morphological-diversity-in-an-insular-species-of-lizard
#4
Corentin Bochaton, Salvador Bailon, Anthony Herrel, Sandrine Grouard, Ivan Ineich, Anne Tresset, Raphaël Cornette
Fossil remains provide useful insights into the long-term impact of anthropogenic phenomena on faunas and are often used to reveal the local (extirpations) or global (extinctions) losses of populations or species. However, other phenomena such as minor morphological changes can remain inconspicuous in the fossil record depending on the methodology used. In this study, we used the anole of Marie-Galante Island (Anolis ferreus) in Guadeloupe (French, West Indies) as a model to demonstrate how the morphological evolution of an insular lizard can be tracked through the Pleistocene/Holocene climatic transition and the recent anthropization of the island...
June 28, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28649347/factors-restricting-the-range-expansion-of-the-invasive-green-anole-anolis-carolinensis-on-okinawa-island-japan
#5
Yukari Suzuki-Ohno, Kenjiro Morita, Nobuaki Nagata, Hideaki Mori, Shintaro Abe, Takashi Makino, Masakado Kawata
The green anole Anolis carolinensis invaded the Ogasawara Islands in Japan, drove various native species to extinction, and its distribution expanded 14 years after initial establishment. A. carolinensis invaded Okinawa Island, but it has not expanded its distribution in more than 25 years, although its density is extremely high in the southern region. To determine whether A. carolinensis has the potential to expand its distribution on Okinawa Island, we performed phylogenetic analysis of mitochondrial ND2 DNA sequences to study the origin of A...
June 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28616163/a-genomic-assessment-of-species-boundaries-and-hybridization-in-a-group-of-highly-polymorphic-anoles-distichus-species-complex
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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