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https://www.readbyqxmd.com/read/28218805/functional-nonredundancy-of-elephants-in-a-disturbed-tropical-forest
#1
Nitin Sekar, Chia-Lo Lee, Raman Sukumar
Conservation efforts are often motivated by the threat of global extinction. Yet if conservationists had more information suggesting that the local extirpation of individual species could lead to undesirable ecological effects, conservationists might more frequently attempt to protect or restore such species across their range even if they are not in danger of global extinction. Scientists have seldom measured or quantitatively predicted the functional consequences of species loss, even for large, extinction-prone species that theory suggests should be functionally unique...
February 20, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28210544/cataracts-and-strabismus-associated-with-hand-rearing-using-artificial-milk-formulas-in-bengal-tiger-panthera-tigris-spp-tigris-cubs
#2
Rogério Ribas Lange, Leandro Lima, Erika Frühvald, Vera Sônia Nunes da Silva, Aparecida Sônia de Souza, Fabiano Montiani-Ferreira
The aim of this investigation is to describe the potential contributing nutritional factors involved in the development of ophthalmic and dermatologic changes in four Bengal tiger (Panthera tigris spp tigris) cubs fed an artificial milk formula. The affected animals were compared with two other tiger cubs that had been nursed by their dam naturally. After the first clinical signs appeared, the tiger cubs underwent ophthalmic evaluation. Severe symmetric generalized alopecia over the trunk, sparing the head and distal portion of the front and rear limbs, bilateral cataracts and strabismus were noticed...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28195379/the-use-of-functionalized-silk-fibroin-films-as-a-platform-for-optical-diffraction-based-sensing-applications
#3
Zhitao Zhou, Zhifeng Shi, Xiaoqing Cai, Shaoqing Zhang, Stephanie G Corder, Xinxin Li, Yeshun Zhang, Guozheng Zhang, Liang Chen, Mengkun Liu, David L Kaplan, Fiorenzo G Omenetto, Ying Mao, Zhendong Tao, Tiger H Tao
A set of biocompatible, biodegradable, and biofunctionalizable diffractive optical elements (DOEs) using silk proteins as the building materials are reported. The diffraction pattern of a DOE is highly sensitive to the surrounding environment and the structural integrity, offering numerous opportunities for biosensing applications.
February 13, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28192520/holding-back-the-tiger-successful-control-program-protects-australia-from-aedes-albopictus-expansion
#4
Mutizwa Odwell Muzari, Gregor Devine, Joseph Davis, Bruce Crunkhorn, Andrew van den Hurk, Peter Whelan, Richard Russell, James Walker, Peter Horne, Gerhard Ehlers, Scott Ritchie
BACKGROUND: The Asian tiger mosquito, Aedes albopictus, is an important vector of dengue, chikungunya and Zika viruses and is a highly invasive and aggressive biter. Established populations of this species were first recognised in Australia in 2005 when they were discovered on islands in the Torres Strait, between mainland Australia and Papua New Guinea. A control program was implemented with the original goal of eliminating Ae. albopictus from the Torres Strait. We describe the evolution of management strategies that provide a template for Ae...
February 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28187620/tiger-beetles-coleoptera-carabidae-cicindelinae-pupal-stage-current-state-of-knowledge-and-future-perspectives
#5
André S Roza, José R M Mermudes
The tiger beetles (Carabidae: Cicindelinae) include about 2,822 species and 120 genera around the world. They are one of the most widely studied families of Coleoptera. However, the knowledge about their immature stages is incipient and usually restricted to the larval stages. Pupal characteristics have been among the most ignored aspects of tiger beetle biology. Here we compile and update the current knowledge of tiger beetle pupae.
January 26, 2017: Zootaxa
https://www.readbyqxmd.com/read/28179511/spatio-temporal-interactions-facilitate-large-carnivore-sympatry-across-a-resource-gradient
#6
K Ullas Karanth, Arjun Srivathsa, Divya Vasudev, Mahi Puri, Ravishankar Parameshwaran, N Samba Kumar
Species within a guild vary their use of time, space and resources, thereby enabling sympatry. As intra-guild competition intensifies, such behavioural adaptations may become prominent. We assessed mechanisms of facilitating sympatry among dhole (Cuon alpinus), leopard (Panthera pardus) and tiger (Panthera tigris) in tropical forests of India using camera-trap surveys. We examined population-level temporal, spatial and spatio-temporal segregation among them across four reserves representing a gradient of carnivore and prey densities...
February 8, 2017: Proceedings. Biological Sciences
https://www.readbyqxmd.com/read/28164360/new-insights-into-the-spermatogenesis-of-the-black-tiger-prawn-penaeus-monodon
#7
Tianyi Feng, Brian Paterson, Stephen Johnston
This study reports a comprehensive description of penaeid spermatogenesis (Penaeus monodon) by light and transmission electron microscopy. A conspicuous characteristic of spermatocytogenesis was a ring-like structure with high electron-density adjacent to the nucleus of a primary spermatocyte. During the spermiogenesis from stage I (StI) to stage VI spermatid (StVI), the formation of the acrosome and decondensation of the nucleus were the most notable morphological transformations. StIs were small and compact and they were contained in the syncytia...
February 5, 2017: Journal of Morphology
https://www.readbyqxmd.com/read/28159295/effect-of-tiger-nut-cyperus-esculentus-milk-co-product-on-the-surface-and-diffusional-properties-of-a-wheat-based-matrix
#8
Samuel Verdú, José M Barat, Cecibel Alava, Raúl Grau
The food processing industry generates huge volumes of waste and co-products which still contain valuable compounds. Tiger-nut milk production generates large amounts of a co-product with a high insoluble fibre content, which is interesting as a bioactive component from a nutritional viewpoint. This co-product is formed by two different tissues in composition, particle size and colour terms, so two different flours were obtained from them. Both flours were included in a wheat-based matrix at different substitution levels: 5%, 10% and 20% (d...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28152011/dengue-virus-serotype-2-infection-alters-midgut-and-carcass-gene-expression-in-the-asian-tiger-mosquito-aedes-albopictus
#9
Hitoshi Tsujimoto, Kathryn A Hanley, Anitha Sundararajan, Nicholas P Devitt, Faye D Schilkey, Immo A Hansen
BACKGROUND: The Asian tiger mosquito, Aedes albopictus is currently an important vector for dengue, chikungunya and Zika virus, and its role in transmission of arthropod-borne viruses (arboviruses) may increase in the future due to its ability to colonize temperate regions. In contrast to Aedes aegypti, the dominant vector of dengue, chikungunya and Zika virus, genetic responses of Ae. albopictus upon infection with an arbovirus are not well characterized. Here we present a study of the changes in transcript expression in Ae...
2017: PloS One
https://www.readbyqxmd.com/read/28135274/genetic-evidence-for-a-worldwide-chaotic-dispersion-pattern-of-the-arbovirus-vector-aedes-albopictus
#10
Mosè Manni, Carmela R Guglielmino, Francesca Scolari, Anubis Vega-Rúa, Anna-Bella Failloux, Pradya Somboon, Antonella Lisa, Grazia Savini, Mariangela Bonizzoni, Ludvik M Gomulski, Anna R Malacrida, Giuliano Gasperi
BACKGROUND: Invasive species represent a global concern for their rapid spread and the possibility of infectious disease transmission. This is the case of the global invader Aedes albopictus, the Asian tiger mosquito. This species is a vector of medically important arboviruses, notably chikungunya (CHIKV), dengue (DENV) and Zika (ZIKV). The reconstruction of the complex colonization pattern of this mosquito has great potential for mitigating its spread and, consequently, disease risks...
January 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28127056/identification-of-mutant-genes-and-introgressed-tiger-salamander-dna-in-the-laboratory-axolotl-ambystoma-mexicanum
#11
M Ryan Woodcock, Jennifer Vaughn-Wolfe, Alexandra Elias, D Kevin Kump, Katharina Denise Kendall, Nataliya Timoshevskaya, Vladimir Timoshevskiy, Dustin W Perry, Jeramiah J Smith, Jessica E Spiewak, David M Parichy, S Randal Voss
The molecular genetic toolkit of the Mexican axolotl, a classic model organism, has matured to the point where it is now possible to identify genes for mutant phenotypes. We used a positional cloning-candidate gene approach to identify molecular bases for two historic axolotl pigment phenotypes: white and albino. White (d/d) mutants have defects in pigment cell morphogenesis and differentiation, whereas albino (a/a) mutants lack melanin. We identified in white mutants a transcriptional defect in endothelin 3 (edn3), encoding a peptide factor that promotes pigment cell migration and differentiation in other vertebrates...
December 2017: Scientific Reports
https://www.readbyqxmd.com/read/28125032/malpighian-tubules-as-novel-targets-for-mosquito-control
#12
REVIEW
Peter M Piermarini, Carlos J Esquivel, Jerod S Denton
The Malpighian tubules and hindgut are the renal excretory tissues of mosquitoes; they are essential to maintaining hemolymph water and solute homeostasis. Moreover, they make important contributions to detoxifying metabolic wastes and xenobiotics in the hemolymph. We have focused on elucidating the molecular mechanisms of Malpighian tubule function in adult female mosquitoes and developing chemical tools as prototypes for next-generation mosquitocides that would act via a novel mechanism of action (i.e., renal failure)...
January 24, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28119335/dna-double-strand-break-repair-in-penaeus-monodon-is-predominantly-dependent-on-homologous-recombination
#13
Shikha Srivastava, Sumedha Dahal, Sharanya J Naidu, Deepika Anand, Vidya Gopalakrishnan, Rajendran Kooloth Valappil, Sathees C Raghavan
DNA double-strand breaks (DSBs) are mostly repaired by nonhomologous end joining (NHEJ) and homologous recombination (HR) in higher eukaryotes. In contrast, HR-mediated DSB repair is the major double-strand break repair pathway in lower order organisms such as bacteria and yeast. Penaeus monodon, commonly known as black tiger shrimp, is one of the economically important crustaceans facing large-scale mortality due to exposure to infectious diseases. The animals can also get exposed to chemical mutagens under the culture conditions as well as in wild...
January 24, 2017: DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes
https://www.readbyqxmd.com/read/28116530/first-mass-development-of-aedes-albopictus-diptera-culicidae-its-surveillance-and-control-in-germany
#14
Norbert Becker, Stefanie Schön, Alexandra-Maria Klein, Ina Ferstl, Ali Kizgin, Egbert Tannich, Carola Kuhn, Björn Pluskota, Artur Jöst
The Asian tiger mosquito Aedes albopictus has undergone a dramatic expansion of its range in the last few decades. Since its first detection in 2007 in Germany at the motorway A5 coming from Italy via Switzerland to Germany, it has been continuously introduced by vehicles, most probably from Italy. After a hint from an alert gardener in an allotment garden area in Freiburg, Southwest Germany, in 2015, a surveillance programme was started focusing on the garden area and adjacent areas as well as most of the cemeteries as potential infestation areas...
January 23, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28113101/clinical-and-genetic-features-of-pkan-patients-in-a-tertiary-centre-in-turkey
#15
Nihan Hande Akcakaya, Sibel Ugur Iseri, Birdal Bilir, Esra Battaloglu, Pinar Tekturk, Murat Gultekin, Gokcen Akar, Remzi Yigiter, Hasmet Hanagasi, Recep Alp, Sultan Cagirici, Mefkure Eraksoy, Ugur Ozbek, Zuhal Yapici
OBJECTIVE: Pantothenate kinase-associated neurodegeneration (PKAN) is caused by mutations of the pantothenate kinase 2 (PANK2) gene. The major clinical sign of PKAN is dystonia and the eye-of-the-tiger pattern on the MRI has been a clue for the diagnosis. We aim to discuss clinical and genetic findings of 22 PKAN patients from 13 families. METHODS: Twenty-two patients were clinically diagnosed with PKAN and screened for PANK2 mutations. The patients were classified according to their onset age and progression rate...
January 15, 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28106584/international-evolution-of-tiger-informatics-competencies
#16
Joyce Sensmeier, Christel Anderson, Toria Shaw
The TIGER Initiative aims to explain how to equip practicing nurses with informatics competencies. This chapter describes a collaborative effort to identify global informatics requirements in relation to core competencies and to match them with national and regional needs. Recommendations from the TIGER Informatics Competency Synthesis Project, described here, have implications for an international framework of informatics competencies for all types of health care professionals including nurses.
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28100937/why-the-resistance-minimally-invasive-pancreaticoduodenectomy-saving-the-patient-from-tigers
#17
EDITORIAL
Brij B Agarwal, Chintamani, Neeraj Dhamija, Shruti Sharma, Sneh Agarwal
No abstract text is available yet for this article.
December 2016: Indian Journal of Surgery
https://www.readbyqxmd.com/read/28099446/reconstruction-of-the-cortical-maps-of-the-tasmanian-tiger-and-comparison-to-the-tasmanian-devil
#18
Gregory S Berns, Ken W S Ashwell
The last known Tasmanian tiger (Thylacinus cynocephalus)-aka the thylacine-died in 1936. Because its natural behavior was never scientifically documented, we are left to infer aspects of its behavior from museum specimens and historical recollections of bushmen. Recent advances in brain imaging have made it possible to scan postmortem specimens of a wide range of animals, even more than a decade old. Any thylacine brain, however, would be more than 100 years old. Here, we show that it is possible to reconstruct white matter tracts in two thylacine brains...
2017: PloS One
https://www.readbyqxmd.com/read/28095667/sequence-analysis-of-mitochondrial-genome-of-toxascaris-leonina-from-a-south-china-tiger
#19
Kangxin Li, Fang Yang, A Y Abdullahi, Meiran Song, Xianli Shi, Minwei Wang, Yeqi Fu, Weida Pan, Fang Shan, Wu Chen, Guoqing Li
Toxascaris leonina is a common parasitic nematode of wild mammals and has significant impacts on the protection of rare wild animals. To analyze population genetic characteristics of T. leonina from South China tiger, its mitochondrial (mt) genome was sequenced. Its complete circular mt genome was 14,277 bp in length, including 12 protein-coding genes, 22 tRNA genes, 2 rRNA genes, and 2 non-coding regions. The nucleotide composition was biased toward A and T. The most common start codon and stop codon were TTG and TAG, and 4 genes ended with an incomplete stop codon...
December 2016: Korean Journal of Parasitology
https://www.readbyqxmd.com/read/28095405/defining-the-risk-of-zika-and-chikungunya-virus-transmission-in-human-population-centers-of-the-eastern-united-states
#20
Carrie A Manore, Richard S Ostfeld, Folashade B Agusto, Holly Gaff, Shannon L LaDeau
The recent spread of mosquito-transmitted viruses and associated disease to the Americas motivates a new, data-driven evaluation of risk in temperate population centers. Temperate regions are generally expected to pose low risk for significant mosquito-borne disease; however, the spread of the Asian tiger mosquito (Aedes albopictus) across densely populated urban areas has established a new landscape of risk. We use a model informed by field data to assess the conditions likely to facilitate local transmission of chikungunya and Zika viruses from an infected traveler to Ae...
January 2017: PLoS Neglected Tropical Diseases
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