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https://www.readbyqxmd.com/read/29143128/the-evolution-of-androgen-receptor-expression-and-behavior-in-anolis-lizard-forelimb-muscles
#1
Michele A Johnson, Bonnie K Kircher, Diego J Castro
The motor systems that produce behavioral movements are among the primary targets for the action of steroid hormones, including androgens. Androgens such as testosterone bind to androgen receptors (AR) to induce physiological changes in the size, strength, and energetic capacity of skeletal muscles, which can directly influence the performance of behaviors in which those muscles are used. Because tissues differentially express AR, resulting in tissue-specific sensitivity to androgens, AR expression may be a major target of selection for the evolution of behavior...
November 15, 2017: Journal of Comparative Physiology. A, Neuroethology, Sensory, Neural, and Behavioral Physiology
https://www.readbyqxmd.com/read/29134056/semicircular-canals-in-anolis-lizards-ecomorphological-convergence-and-ecomorph-affinities-of-fossil-species
#2
Blake V Dickson, Emma Sherratt, Jonathan B Losos, Stephanie E Pierce
Anolis lizards are a model system for the study of adaptive radiation and convergent evolution. Greater Antillean anoles have repeatedly evolved six similar forms or ecomorphs: crown-giant, grass-bush, twig, trunk, trunk-crown and trunk-ground. Members of each ecomorph category possess a specific set of morphological, ecological and behavioural characteristics which have been acquired convergently. Here we test whether the semicircular canal system-the organ of balance during movement-is also convergent among ecomorphs, reflecting the shared sensory requirements of their ecological niches...
October 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/29133310/convergent-origination-of-a-drosophila-like-dosage-compensation-mechanism-in-a-reptile-lineage
#3
Ray Marin, Diego Cortez, Francesco Lamanna, Madapura M Pradeepa, Evgeny Leushkin, Philippe Julien, Angélica Liechti, Jean Halbert, Thoomke Brüning, Katharina Mössinger, Timo Trefzer, Christian Conrad, Halie N Kerver, Juli Wade, Patrick Tschopp, Henrik Kaessmann
Sex chromosomes differentiated from different ancestral autosomes in various vertebrate lineages. Here, we trace the functional evolution of the XY Chromosomes of the green anole lizard (Anolis carolinensis), on the basis of extensive high-throughput genome, transcriptome and histone modification sequencing data and revisit dosage compensation evolution in representative mammals and birds with substantial new expression data. Our analyses show that Anolis sex chromosomes represent an ancient XY system that originated at least ≈160 million years ago in the ancestor of Iguania lizards, shortly after the separation from the snake lineage...
November 13, 2017: Genome Research
https://www.readbyqxmd.com/read/28970515/a-virulent-clone-of-devriesea-agamarum-affects-endangered-lesser-antillean-iguanas-iguana-delicatissima
#4
Tom Hellebuyck, Karl Questel, Frank Pasmans, Leen Van Brantegem, Pascal Philip, An Martel
Infectious diseases affecting wildlife are drivers of global biodiversity loss. Here we report a bacterial threat to endangered wild reptiles. Since April 2011, a severe skin disease has affected free-ranging, endangered Lesser Antillean iguanas (Iguana delicatissima) on the French Caribbean island of Saint Barthélemy and we identified Devriesea agamarum as the causative agent. The presence of this bacterium was also demonstrated in healthy lizards (anoles) co-inhabiting the island. All isolates from the iguanas corresponded to a single AFLP genotype that until now has exclusively been associated with infections in lizard species in captivity...
October 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28953920/there-s-more-than-one-way-to-climb-a-tree-limb-length-and-microhabitat-use-in-lizards-with-toe-pads
#5
Travis J Hagey, Scott Harte, Mathew Vickers, Luke J Harmon, Lin Schwarzkopf
Ecomorphology links microhabitat and morphology. By comparing ecomorphological associations across clades, we can investigate the extent to which evolution can produce similar solutions in response to similar challenges. While Anolis lizards represent a well-studied example of repeated convergent evolution, very few studies have investigated the ecomorphology of geckos. Similar to anoles, gekkonid lizards have independently evolved adhesive toe pads and many species are scansorial. We quantified gecko and anole limb length and microhabitat use, finding that geckos tend to have shorter limbs than anoles...
2017: PloS One
https://www.readbyqxmd.com/read/28919954/immunocytological-analysis-of-meiotic-recombination-in-two-anole-lizards-squamata-dactyloidae
#6
Artem P Lisachov, Vladimir A Trifonov, Massimo Giovannotti, Malcolm A Ferguson-Smith, Pavel M Borodin
Although the evolutionary importance of meiotic recombination is not disputed, the significance of interspecies differences in the recombination rates and recombination landscapes remains under-appreciated. Recombination rates and distribution of chiasmata have been examined cytologically in many mammalian species, whereas data on other vertebrates are scarce. Immunolocalization of the protein of the synaptonemal complex (SYCP3), centromere proteins and the mismatch-repair protein MLH1 was used, which is associated with the most common type of recombination nodules, to analyze the pattern of meiotic recombination in the male of two species of iguanian lizards, Anolis carolinensis Voigt, 1832 and Deiroptyx coelestinus (Cope, 1862)...
2017: Comparative Cytogenetics
https://www.readbyqxmd.com/read/28906512/three-series-of-heterometallic-ni-ii-ln-iii-schiff-base-complexes-synthesis-crystal-structures-and-magnetic-characterization
#7
Lin Jiang, Yue Liu, Xin Liu, Jinlei Tian, Shiping Yan
Three series of Ni(II)-Ln(III) complexes were synthesized with the general formulae [(μ3-CO3)2{Ni(HL)(CH3-CH2OH)Ln(CH3COO)}2]·2CH3CH2OH (1-6) (Ln = Tb (1), Dy (2), Ho (3), Er (4), Tm (5), Yb (6); H3L = N,N'-bis(3-methoxysalicylidene)-1,3-diamino-2-prop-anol), [Ni(HL)Ln(dbm)3]·CH3OH2·2CH2Cl2 (7-10) (Ln = Tb (7), Eu (8), Gd (9), Ho (10); Hdbm = 1,3-diphenyl-1,3-propanedione) and [Ni(HL)(H2O)(tfa)Ln(hfac)2] (11-15) (Ln = Tb (11), Dy (12), Eu (13), Gd (14), Ho (15); Hhfac = 1,1,1,5,5,5-hexafluoropentane-2,4-dione, tfa(-) = trifluoroacetate) using compartmental Schiff base ligands in conjunction with auxiliary ligands...
September 26, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28874017/environmental-drivers-of-seasonal-patterns-of-host-utilization-by-culiseta-melanura-diptera-culicidae-in-florida
#8
Erik M Blosser, Cynthia C Lord, Tanise Stenn, Carolina Acevedo, Hassan K Hassan, Lawrence E Reeves, Thomas R Unnasch, Nathan D Burkett-Cadena
Field studies were carried out in four Florida counties to investigate winter and spring ecology of host use by Culiseta melanura (Coquillet), the primary vector of eastern equine encephalomyelitis virus (EEEV) in North America. Bloodmeal analysis by PCR was used to identify 233 host bloodmeals, which mainly originated from birds (78.5%) and reptiles (17.2%), primarily Anolis spp. lizards. Across counties, the percentage of bloodmeals from reptiles (7-37% depending upon county) increased with increasing day length and temperature in the spring...
September 1, 2017: Journal of Medical Entomology
https://www.readbyqxmd.com/read/28859403/plasmodium-infections-in-natural-populations-of-anolis-sagrei-reflect-tolerance-rather-than-susceptibility
#9
Camille Bonneaud, Irem Sepil, Lena Wilfert, Ryan Calsbeek
Parasites can represent formidable selection pressures for hosts, but the cost of infection is sometimes difficult to demonstrate in natural populations. While parasite exploitation strategies may, in some instances, actually inflict low costs on their hosts, the response of hosts to infection is also likely to determine whether or not these costs can be detected. Indeed, costs of infection may be obscured if infected individuals in the wild are those that are the most tolerant, rather than the most susceptible, to infection...
August 1, 2017: Integrative and Comparative Biology
https://www.readbyqxmd.com/read/28857142/digest-different-evolutionary-dynamics-led-to-the-convergence-of-clinging-performance-in-lizard-toepads%C3%A2
#10
Sarin Tiatragul, Gopal Murali, James T Stroud
No abstract text is available yet for this article.
October 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28819830/identification-and-characterization-of-tyrosine-kinases-in-anole-lizard-indicate-the-conserved-tyrosine-kinase-repertoire-in-vertebrates
#11
Ake Liu, Funan He, Xun Gu
The tyrosine kinases (TKs) play principal roles in regulation of multicellular aspects of the organism and are implicated in many cancer types and congenital disorders. The anole lizard has recently been introduced as a model organism for laboratory-based studies of organismal function and field studies of ecology and evolution. However, the TK family of anole lizard has not been systematically identified and characterized yet. In this study, we identified 82 TK-encoding genes in the anole lizard genome and classified them into 28 subfamilies through phylogenetic analysis, with no member from ROS and STYK1 subfamilies identified...
December 2017: Molecular Genetics and Genomics: MGG
https://www.readbyqxmd.com/read/28809029/model-clades-versus-model-species-anolis-lizards-as-an-integrative-model-of-anatomical-evolution
#12
Thomas J Sanger, Bonnie K Kircher
Anolis lizards , known for their replicated patterns of morphological diversification, are widely studied in the fields of evolution and ecology. As a textbook example of adaptive radiation, this genus has supported decades of intense study in natural history, behavior, morphological evolution, and systematics. Following the publication of the A. carolinensis genome, research on Anolis lizards has expanded into new areas, toward obtaining an understanding the developmental and genetic bases of anole diversity...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28774927/winter-storms-drive-rapid-phenotypic-regulatory-and-genomic-shifts-in-the-green-anole-lizard
#13
Shane C Campbell-Staton, Zachary A Cheviron, Nicholas Rochette, Julian Catchen, Jonathan B Losos, Scott V Edwards
Extreme environmental perturbations offer opportunities to observe the effects of natural selection in wild populations. During the winter of 2013-2014, the southeastern United States endured an extreme cold event. We used thermal performance, transcriptomics, and genome scans to measure responses of lizard populations to storm-induced selection. We found significant increases in cold tolerance at the species' southern limit. Gene expression in southern survivors shifted toward patterns characteristic of northern populations...
August 4, 2017: Science
https://www.readbyqxmd.com/read/28745397/tempo-and-mode-of-performance-evolution-across-multiple-independent-origins-of-adhesive-toe-pads-in-lizards
#14
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...
October 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
#15
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
#16
T Driessens, S Baeckens, M Balzarolo, B Vanhooydonck, K Huyghe, R 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 and 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
#17
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
#18
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
#19
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
#20
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
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