keyword
MENU ▼
Read by QxMD icon Read
search

Lizard

keyword
https://www.readbyqxmd.com/read/28441560/evolution-fangtastic-venoms-underpin-parasitic-mimicry
#1
Martin I Taylor
Venomous teeth are rare in fishes, which typically utilise spines for defence. A new study reveals the evolutionary origins of fangs and venom in the Nemophini blennies and shows that, in contrast to snakes and lizards, the fangs pre-date the venom.
April 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28440870/intensity-of-male-male-competition-predicts-morph-diversity-in-a-colour-polymorphic-lizard
#2
Guillem Pérez I de Lanuza, Miguel A Carretero, Enrique Font
Sexual selection is one of the main processes involved in the emergence and maintenance of heritable colour polymorphisms in a variety of taxa. Here we test whether the intensity of sexual selection, estimated from population sex ratio, predicts morph diversity in Podarcis muralis, a colour polymorphic lizard with discrete white, yellow, orange, white-orange, and yellow-orange male and female phenotypes (i.e. morphs). In a sample of 116 Pyrenean populations and 5421 lizards, sex ratios (m/f) vary from 0.29 to 2...
April 25, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28439533/the-anatomical-placode-in-reptile-scale-morphogenesis-indicates-shared-ancestry-among-skin-appendages-in-amniotes
#3
Nicolas Di-Poï, Michel C Milinkovitch
Most mammals, birds, and reptiles are readily recognized by their hairs, feathers, and scales, respectively. However, the lack of fossil intermediate forms between scales and hairs and substantial differences in their morphogenesis and protein composition have fueled the controversy pertaining to their potential common ancestry for decades. Central to this debate is the apparent lack of an "anatomical placode" (that is, a local epidermal thickening characteristic of feathers' and hairs' early morphogenesis) in reptile scale development...
June 2016: Science Advances
https://www.readbyqxmd.com/read/28439255/assessing-the-functional-role-of-leptin-in-energy-homeostasis-and-the-stress-response-in-vertebrates
#4
REVIEW
Courtney A Deck, Jamie L Honeycutt, Eugene Cheung, Hannah M Reynolds, Russell J Borski
Leptin is a pleiotropic hormone that plays a critical role in regulating appetite, energy metabolism, growth, stress, and immune function across vertebrate groups. In mammals, it has been classically described as an adipostat, relaying information regarding energy status to the brain. While retaining poor sequence conservation with mammalian leptins, teleostean leptins elicit a number of similar regulatory properties, although current evidence suggests that it does not function as an adipostat in this group of vertebrates...
2017: Frontiers in Endocrinology
https://www.readbyqxmd.com/read/28438095/arcobacter-an-emerging-food-borne-zoonotic-pathogen-its-public-health-concerns-and-advances-in-diagnosis-and-control-a-comprehensive-review
#5
Thadiyam Puram Ramees, Kuldeep Dhama, Kumaragurubaran Karthik, Ramswaroop Singh Rathore, Ashok Kumar, Mani Saminathan, Ruchi Tiwari, Yashpal Singh Malik, Raj Kumar Singh
Arcobacter has emerged as an important food-borne zoonotic pathogen, causing sometimes serious infections in humans and animals. Newer species of Arcobacter are being incessantly emerging (presently 25 species have been identified) with novel information on the evolutionary mechanisms and genetic diversity among different Arcobacter species. These have been reported from chickens, domestic animals (cattle, pigs, sheep, horses, dogs), reptiles (lizards, snakes and chelonians), meat (poultry, pork, goat, lamb, beef, rabbit), vegetables and from humans in different countries...
April 25, 2017: Veterinary Quarterly
https://www.readbyqxmd.com/read/28433593/tissue-distribution-and-metabolism-of-triadimefon-and-triadimenol-enantiomers-in-chinese-lizards-eremias-argus
#6
Jitong Li, Yinghuan Wang, Wei Li, Peng Xu, Baoyuan Guo, Jianzhong Li, Huili Wang
Triadimefon (TF, S-(+)-TF, R-(-)-TF) and its metabolite triadimenol (TN, TN-A1, A2 and TN-B1, B2) are two systemic fungicides and both of them are chiral pharmaceuticals which are widely used in agricultural industry. Many researches focused on the toxicity effects of triadimefon on mammals, while the ecotoxicological data of tiradimefon on reptiles is limited. In order to understand the toxicity mechanism of triadimefon in reptiles, the current study administrated S-(+)-TF or R-(-)-TF traidimefon (50mg/kg(bw)) to Chinese lizards (Eremias argus) respectively, the absorption, distribution of triadimefon and the formation of triadimenol were analysed at different sampling times...
April 20, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28432151/dehydration-enhances-multiple-physiological-defense-mechanisms-in-a-desert-lizard-heloderma-suspectum
#7
Karla T Moeller, Guillaume Demare, Scott Davies, Dale F DeNardo
The physiological challenges associated with dehydration can induce an increase in plasma glucocorticoid concentrations, a response thought to provide the mechanism for dehydration suppressing immune function. However, a comprehensive examination of the interrelationship of dehydration, stress, and immune function has not been conducted within a single species. We previously demonstrated that Gila monsters (Heloderma suspectum), which inhabit a xeric environment with a predictable seasonal drought, have enhanced measures of innate immunity when dehydrated...
April 21, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28431132/revealing-the-biochemical-and-genetic-basis-of-colour-variation-in-a-polymorphic-lizard
#8
Claire A McLean, Adrian Lutz, Katrina J Rankin, Devi Stuart-Fox, Adnan Moussalli
Determining the mechanistic and genetic basis of animal coloration is essential to understand the costs and constraints on colour production, and the evolution and maintenance of phenotypic variation. However, genes underlying structural colour and widespread pigment classes apart from melanin remain largely uncharacterised, in part due to restricted taxonomic focus. We combined liquid chromatography-mass spectrometry and RNA-seq gene expression analyses to characterise the pigments and genes associated with skin colour in the polymorphic lizard, Ctenophorus decresii...
April 18, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28426427/three-new-species-of-pharygodonidae-nematoda-oxyuridea-in-laudakia-tuberculata-squamata-agamidae-from-dehradun-uttarakhand-india
#9
Anjum N Rizvi, Pallab Maity, Charles R Bursey
Parapharyngodon tuberculata sp. nov., Thelandros tuberculata sp. nov. and Thelandros dehradunensis sp. nov. (Nematoda: Pharyngodonidae) from the large intestine of a rock lizard, Laudakia tuberculata Gray, 1827), are described and illustrated. Parapharyngodon tuberculata sp. nov. is the 8th Oriental species and 59th species assigned to the genus Parapharyngodon and differs from other species of the genus by possessing 3 pairs of caudal papillae, an echinate cloacal lip, 112-115 µm spicule length and postbulbar ovary...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426409/a-new-species-of-oochoristica-cyclophyllidea-linstowiidae-from-non-native-mediterranean-geckos-hemidactylus-turcicus-sauria-gekkonidae-from-texas-usa
#10
Chris T McAllister, Charles R Bursey
A new species of cyclophyllidean tapeworm, Oochoristica harschi sp. nov. is described from 2 of 18 (11%) non-native Mediterranean geckos (Hemidactylus turcicus) collected in June 2016 from Tom Green County, Texas, USA The new species has few characteristics in common with 17 species of Oochoristica previously described from Nearctic reptiles. Of this group, O. harschi is most similar to O. macallisteri Bursey and Goldberg, 1996 from the side-blotched lizard, Uta stansburiana from Arizona and California, USA, in number of testes, 14-20 vs...
June 1, 2017: Acta Parasitologica
https://www.readbyqxmd.com/read/28426153/a-non-pathogenic-recombinant-leishmania-expressing-lipophosphoglycan-3-against-experimental-infection-with-leishmania-infantum
#11
Leila Pirdel, Safar Farajnia
Visceral leishmaniasis (VL) is caused by Leishmania infantum in the Mediterranean basin and affects primarily children and immunosuppressed individuals. Various strategies of vaccination have so far been examined by either protein or DNA without achievable complete protection against the disease. The live non-pathogenic lizard parasite, Leishmania tarentolae, expressing elected Leishmania antigens has recently provided a promising new approach as a safe and effective live vaccine candidate to prevent leishmaniasis...
April 20, 2017: Scandinavian Journal of Immunology
https://www.readbyqxmd.com/read/28425158/sexual-colouration-and-sperm-performance-in-the-australian-painted-dragon-lizard-ctenophorus-pictus
#12
Callum S McDiarmid, Christopher R Friesen, Cissy Ballen, Mats Olsson
Theory predicts trade-offs between pre- and postcopulatory sexually selected traits. This relationship may be mediated by the degree to which males are able to monopolise access to females, as this will place an upper limit on the strength of postcopulatory selection. Furthermore, traits that aid in mate monopolization may be costly to maintain and may limit investment in postcopulatory traits, such as sperm performance. Australian painted dragons are polymorphic for the presence or absence of a yellow gular patch ('bibs'), which may aid them to monopolise access to females...
April 20, 2017: Journal of Evolutionary Biology
https://www.readbyqxmd.com/read/28420031/the-ventromedial-hypothalamic-nucleus-in-the-zebra-finch-taeniopygia-guttata-afferent-and-efferent-projections-in-relation-to-the-control-of-reproductive-behaviour
#13
J Martin Wild
Sex-specific mating behaviors occur in a variety of mammals, with the medial preoptic nucleus (POM) and the ventromedial hypothalamic nucleus (VMH) mediating control of male and female sexual behaviour, respectively. In birds, likewise, POM is predominantly involved in the control of male reproductive behaviour, but the degree to which VMH is involved in female reproductive behaviour is unclear. Here, in male and female zebra finches, a combination of aromatase immunohistochemistry and conventional tract tracing facilitated the definition of two separate but adjacent nuclei in the basal hypothalamus: an oblique band of aromatase-positive (AR+) neurons, and ventromedial to this, an ovoid, aromatase-negative (AR-) nucleus...
April 18, 2017: Journal of Comparative Neurology
https://www.readbyqxmd.com/read/28419123/low-resistive-vibratory-penetration-in-granular-media
#14
Baptiste Darbois Texier, Alejandro Ibarra, Francisco Melo
Non-cohesive materials such as sand, dry snow or cereals are encountered in various common circumstances, from everyday situations to industry. The process of digging into these materials remains a challenge to most animals and machines. Within the animal kingdom, different strategies are employed to overcome this issue, including excavation methods used by ants, the two-anchor strategy employed by soft burrowers such as razor-clams, and undulatory motions exhibited by sandfish lizards. Despite the development of technology to mimic these techniques in diggers and robots, the limitations of animals and machines may differ, and mimicry of natural processes is not necessarily the most efficient technological strategy...
2017: PloS One
https://www.readbyqxmd.com/read/28413237/in-space-and-time-territorial-animals-are-attracted-to-conspecific-chemical-cues
#15
Stephanie M Campos, Chloe Strauss, Emília P Martins
Territorial animals lay scent marks around their territories to broadcast their presence, but these olfactory signals can both attract and repel con-specifics. Attraction or aversion can have a profound impact in terms of space use and thereby influence an individual's access to resources and mates. Here, we test the impact of chemical signals on the long-term space use and activity of receivers, comparing the response of males and females, territory holders, and temporary visitors in Sceloporus undulatus lizards in the field...
February 2017: Ethology: Formerly Zeitschrift Für Tierpsychologie
https://www.readbyqxmd.com/read/28409503/food-restriction-affects-maternal-investment-but-not-neonate-phenotypes-in-a-viviparous-lizard
#16
Yang Wang, Zhi-Gao Zeng, Liang Ma, Shu-Ran Li, Wei-Guo Du
Food availability significantly affects an animal's energy metabolism, and thus its phenotype, survival, and reproduction. Maternal and offspring responses to food conditions are critical for understanding population dynamics and life-history evolution of a species. In this study, we conducted food manipulation experiments in field enclosures to identify the effect of food restriction on female reproductive traits and postpartum body condition, as well as on hatchling phenotypes, in a lacertid viviparous lizard from the Inner Mongolian desert steppe of China...
March 18, 2017: Zoological Research
https://www.readbyqxmd.com/read/28409470/flow-cytometric-analysis-of-the-expression-pattern-of-peroxisomal-proteins-abcd1-abcd2-and-abcd3-in-bv-2-murine-microglial-cells
#17
Meryam Debbabi, Thomas Nury, Imen Helali, El Mostafa Karym, Flore Geillon, Catherine Gondcaille, Doriane Trompier, Amina Najid, Sébastien Terreau, Maryem Bezine, Amira Zarrouk, Anne Vejux, Pierre Andreoletti, Mustapha Cherkaoui-Malki, Stéphane Savary, Gérard Lizard
Microglial cells play important roles in neurodegenerative diseases including peroxisomal leukodystrophies. The BV-2 murine immortalized cells are widely used in the context of neurodegenerative researches. It is therefore important to establish the expression pattern of peroxisomal proteins by flow cytometry in these cells. So, the expression pattern of various peroxisomal transporters (Abcd1, Abcd2, Abcd3) contributing to peroxisomal β-oxidation was evaluated on BV-2 cells by flow cytometry and complementary methods (fluorescence microscopy, and RT-qPCR)...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28408132/comparison-of-the-effects-of-major-fatty-acids-present-in-the-mediterranean-diet-oleic-acid-docosahexaenoic-acid-and-in-hydrogenated-oils-elaidic-acid-on-7-ketocholesterol-induced-oxiapoptophagy-in-microglial-bv-2-cells
#18
Meryam Debbabi, Amira Zarrouk, Maryem Bezine, Wiem Meddeb, Thomas Nury, Asmaa Badreddine, El Mostafa Karym, Randa Sghaier, Lionel Bretillon, Stéphane Guyot, Mohammad Samadi, Mustapha Cherkaoui-Malki, Boubker Nasser, Mondher Mejri, Sofien Ben-Hammou, Mohamed Hammami, Gérard Lizard
Increased levels of 7-ketocholesterol (7KC), which results mainly from cholesterol auto-oxidation, are often found in the plasma and/or cerebrospinal fluid of patients with neurodegenerative diseases and might contribute to activation of microglial cells involved in neurodegeneration. As major cellular dysfunctions are induced by 7KC, it is important to identify molecules able to impair its side effects. Since consumption of olive and argan oils, and fish is important in the Mediterranean diet, the aim of the study was to determine the ability of oleic acid (OA), a major compound of olive and argan oil, and docosahexaenoic acid (DHA) present in fatty fishes, such as sardines, to attenuate 7KC-induced cytotoxic effects...
April 10, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28407082/genes-and-group-membership-predict-gidgee-skink-egernia-stokesii-reproductive-pairs
#19
Sarah K Pearson, Stephanie S Godfrey, N Schwensow, C Michael Bull, Michael G Gardner
Due to their role in mate choice, disease resistance and kin recognition, genes of the major histocompatibility complex (MHC) are good candidates for investigating genetic-based mate choice. MHC based mate choice is context dependent and influenced by many factors including social structure. Social structure diversity makes the Egernia group of lizards suitable for comparative studies of MHC based mate choice. We investigated mate choice in the gidgee skink (Egernia stokesii), a lizard that exhibits high levels of social group and spatial stability...
April 12, 2017: Journal of Heredity
https://www.readbyqxmd.com/read/28406206/a-living-mesoscopic-cellular-automaton-made-of-skin-scales
#20
Liana Manukyan, Sophie A Montandon, Anamarija Fofonjka, Stanislav Smirnov, Michel C Milinkovitch
In vertebrates, skin colour patterns emerge from nonlinear dynamical microscopic systems of cell interactions. Here we show that in ocellated lizards a quasi-hexagonal lattice of skin scales, rather than individual chromatophore cells, establishes a green and black labyrinthine pattern of skin colour. We analysed time series of lizard scale colour dynamics over four years of their development and demonstrate that this pattern is produced by a cellular automaton (a grid of elements whose states are iterated according to a set of rules based on the states of neighbouring elements) that dynamically computes the colour states of individual mesoscopic skin scales to produce the corresponding macroscopic colour pattern...
April 12, 2017: Nature
keyword
keyword
2711
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"