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https://www.readbyqxmd.com/read/28680689/rensching-cats-and-dogs-feeding-ecology-and-fecundity-trends-explain-variation-in-the-allometry-of-sexual-size-dimorphism
#1
P J Johnson, M J Noonan, A C Kitchener, L A Harrington, C Newman, D W Macdonald
The tendency for sexual size dimorphism (SSD) to increase with body mass in taxa where males are larger, and to decrease when females are larger, is known as Rensch's rule. In mammals, where the trend occurs, it is believed to be the result of a competitive advantage for larger males, while female mass is constrained by the energetics of reproduction. Here, we examine the allometry of SSD within the Felidae and Canidae, demonstrating distinctly different patterns: in felids, there is positive allometric scaling, while there is no trend in canids...
June 2017: Royal Society Open Science
https://www.readbyqxmd.com/read/28615877/pcr-rflp-based-genotyping-of-indian-isolates-of-toxoplasma-gondii
#2
Hilal Ahmad Rather, Mir Mehraj Din, Aasif Ahmad Sheikh, Anup Kumar Tewari, Biswa Ranjan Maharana
Toxoplasma gondii is an apicomplexan parasite capable of infecting a wide variety of warm-blooded animals, including birds and humans and is zoonotically important too. Felidae serve its definitive hosts and most infections are inoccous while in various intermediate hosts (e.g. sheep), it is responsible for abortion, still births. Humans which are immune compromised are also susceptible to toxoplasmosis. Most of the epidemiological studies have revealed it to be belonging to three clonal types with exceptions in South Africa having atypical isolates...
June 2017: Journal of Parasitic Diseases: Official Organ of the Indian Society for Parasitology
https://www.readbyqxmd.com/read/28599641/morphological-modularity-in-the-vertebral-column-of-felidae-mammalia-carnivora
#3
Marcela Randau, Anjali Goswami
BACKGROUND: Previous studies have demonstrated that the clear morphological differences among vertebrae across the presacral column are accompanied by heterogeneous functional signals in vertebral shape. Further, several lines of evidence suggest that the mammalian axial skeleton is a highly modular structure. These include its composition of serial units, a trade-off between high shape variance and strong conservation of vertebral count, and direct association of regions with anterior expression sites of Hox genes...
June 9, 2017: BMC Evolutionary Biology
https://www.readbyqxmd.com/read/28453659/udp-glucuronosyltransferase-ugt-2b-subfamily-interspecies-differences-in-carnivores
#4
Takamitsu Kondo, Yoshinori Ikenaka, Shouta M M Nakayama, Yusuke K Kawai, Hazuki Mizukawa, Yoko Mitani, Kei Nomyama, Shinsuke Tanabe, Mayumi Ishizuka
UDP-glucuronosyltransferases (UGTs) are among the most important xenobiotic metabolizing enzymes that conjugate a wide range of chemicals. Previous studies showed that Felidae and Pinnipedia species have very low UGT activities toward some phenolic compounds because of the UGT1A6 pseudogene and small numbers of UGT1A isozymes. In addition to the UGT1As, UGT2Bs isozymes also conjugate various endogenous (e.g., estrogens, androgens, and bile acids) and exogenous compounds (opioids, NSAIDs, and environmental pollutants)...
April 27, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28450662/comparative-serological-investigation-between-cat-and-tiger-blood-for-transfusion
#5
Naris Thengchaisri, Chayakrit Sinthusingha, Surapong Arthitwong, Panpicha Sattasathuchana
Evidence suggests that non-domesticated felids inherited the same AB-erythrocyte antigens as domestic cats. To study the possible compatibility of tiger blood with that of other endangered felidae, blood samples from captive tigers and domestic cats were subjected to an in vitro study. The objectives of this study were to (1) identify whether the captive tigers had blood type AB and (2) determine the compatibility between the blood of captive tigers and that of domestic cats with a similar blood type. The anti-coagulated blood with ethylenediaminetetraacetic acid of 30 tigers was examined to determine blood type, and a crossmatching test was performed between tiger and cat blood...
June 29, 2017: Journal of Veterinary Medical Science
https://www.readbyqxmd.com/read/28358848/comprehensive-species-set-revealing-the-phylogeny-and-biogeography-of-feliformia-mammalia-carnivora-based-on-mitochondrial-dna
#6
Yu Zhou, Si-Rui Wang, Jian-Zhang Ma
Extant Feliformia species are one of the most diverse radiations of Carnivora (~123 species). Despite substantial recent interest in their conservation, diversification, and systematic study, no previous phylogeny contains a comprehensive species set, and no biogeography of this group is available. Here, we present a phylogenetic estimate for Feliformia with a comprehensive species set and establish a historical biogeography based on mitochondrial DNA. Both the Bayesian and maximum likelihood phylogeny for Feliformia are elucidated in our analyses and are strongly consistent with many groups recognized in previous studies...
2017: PloS One
https://www.readbyqxmd.com/read/28341928/description-of-a-new-species-of-ixodes-latreille-1795-acari-ixodidae-and-redescription-of-i-lasallei-m%C3%A3-ndez-ortiz-1958-parasites-of-agoutis-and-pacas-rodentia-dasyproctidae-cuniculidae-in-central-and-south-america
#7
Dmitry A Apanaskevich, Sergio E Bermúdez
Ixodes bocatorensis n. sp. (Acari: Ixodidae), is described based on adults ex agoutis (Rodentia: Dasyproctidae), pacas (Rodentia: Cuniculidae) and "tapir and sloth" (Perissodactyla: Tapiridae and Pilosa) from Colombia, Panama and Venezuela. Adults of I. bocatorensis n. sp. are similar to those of I. lasallei Méndez & Ortiz, 1958 but can be distinguished by the scutum dimensions, punctation pattern, gnathosoma and palpi measurements and their ratios, basis capituli anterior angle and shape of the spur of palpal segment I ventrally...
May 2017: Systematic Parasitology
https://www.readbyqxmd.com/read/28302120/responsiveness-of-cats-felidae-to-silver-vine-actinidia-polygama-tatarian-honeysuckle-lonicera-tatarica-valerian-valeriana-officinalis-and-catnip-nepeta-cataria
#8
Sebastiaan Bol, Jana Caspers, Lauren Buckingham, Gail Denise Anderson-Shelton, Carrie Ridgway, C A Tony Buffington, Stefan Schulz, Evelien M Bunnik
BACKGROUND: Olfactory stimulation is an often overlooked method of environmental enrichment for cats in captivity. The best known example of olfactory enrichment is the use of catnip, a plant that can cause an apparently euphoric reaction in domestic cats and most of the Pantherinae. It has long been known that some domestic cats and most tigers do not respond to catnip. Although many anecdotes exist of other plants with similar effects, data are lacking about the number of cats that respond to these plants, and if cats that do not respond to catnip respond to any of them...
March 16, 2017: BMC Veterinary Research
https://www.readbyqxmd.com/read/28288194/the-aromatic-amino-acid-hydroxylase-genes-aah1-and-aah2-in-toxoplasma-gondii-contribute-to-transmission-in-the-cat
#9
Zi T Wang, Shiv K Verma, Jitender P Dubey, L David Sibley
The Toxoplasma gondii genome contains two aromatic amino acid hydroxylase genes, AAH1 and AAH2 encode proteins that produce L-DOPA, which can serve as a precursor of catecholamine neurotransmitters. It has been suggested that this pathway elevates host dopamine levels thus making infected rodents less fearful of their definitive Felidae hosts. However, L-DOPA is also a structural precursor of melanins, secondary quinones, and dityrosine protein crosslinks, which are produced by many species. For example, dityrosine crosslinks are abundant in the oocyst walls of Eimeria and T...
March 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28211157/unravelling-intravertebral-integration-modularity-and-disparity-in-felidae-mammalia
#10
Marcela Randau, Anjali Goswami
Morphological integration and modularity, which describe the relationships among morphological attributes and reflect genetic, developmental, and functional interactions, have been hypothesized to be major influences on trait responses to selection and thus morphological evolution. The mammalian presacral vertebral column shows little variation in vertebral count and therefore specialization for function occurs primarily through modification of vertebral shape. However, vertebral shape has been suggested to be under strong control from developmental canalization, although this has never been explicitly tested...
February 17, 2017: Evolution & Development
https://www.readbyqxmd.com/read/27812324/big-cat-coalitions-a-comparative-analysis-of-regional-brain-volumes-in-felidae
#11
Sharleen T Sakai, Bradley M Arsznov, Ani E Hristova, Elise J Yoon, Barbara L Lundrigan
Broad-based species comparisons across mammalian orders suggest a number of factors that might influence the evolution of large brains. However, the relationship between these factors and total and regional brain size remains unclear. This study investigated the relationship between relative brain size and regional brain volumes and sociality in 13 felid species in hopes of revealing relationships that are not detected in more inclusive comparative studies. In addition, a more detailed analysis was conducted of four focal species: lions (Panthera leo), leopards (Panthera pardus), cougars (Puma concolor), and cheetahs (Acinonyx jubatus)...
2016: Frontiers in Neuroanatomy
https://www.readbyqxmd.com/read/27802837/comparison-of-carnivore-omnivore-and-herbivore-mammalian-genomes-with-a-new-leopard-assembly
#12
Soonok Kim, Yun Sung Cho, Hak-Min Kim, Oksung Chung, Hyunho Kim, Sungwoong Jho, Hong Seomun, Jeongho Kim, Woo Young Bang, Changmu Kim, Junghwa An, Chang Hwan Bae, Youngjune Bhak, Sungwon Jeon, Hyejun Yoon, Yumi Kim, JeHoon Jun, HyeJin Lee, Suan Cho, Olga Uphyrkina, Aleksey Kostyria, John Goodrich, Dale Miquelle, Melody Roelke, John Lewis, Andrey Yurchenko, Anton Bankevich, Juok Cho, Semin Lee, Jeremy S Edwards, Jessica A Weber, Jo Cook, Sangsoo Kim, Hang Lee, Andrea Manica, Ilbeum Lee, Stephen J O'Brien, Jong Bhak, Joo-Hong Yeo
BACKGROUND: There are three main dietary groups in mammals: carnivores, omnivores, and herbivores. Currently, there is limited comparative genomics insight into the evolution of dietary specializations in mammals. Due to recent advances in sequencing technologies, we were able to perform in-depth whole genome analyses of representatives of these three dietary groups. RESULTS: We investigated the evolution of carnivory by comparing 18 representative genomes from across Mammalia with carnivorous, omnivorous, and herbivorous dietary specializations, focusing on Felidae (domestic cat, tiger, lion, cheetah, and leopard), Hominidae, and Bovidae genomes...
October 11, 2016: Genome Biology
https://www.readbyqxmd.com/read/27724937/a-review-of-piroplasmid-infections-in-wild-carnivores-worldwide-importance-for-domestic-animal-health-and-wildlife-conservation
#13
Mario Alvarado-Rybak, Laia Solano-Gallego, Javier Millán
Piroplasmids are tick-borne protozoan parasites that infect blood cells (erythrocytes, lymphocytes or other leukocytes) or endothelial cells of numerous wild and domestic vertebrates worldwide. They cause severe disease in livestock, dogs, cats, wild mammals and, occasionally, in humans. Piroplasmid infections are prevalent in wild carnivores worldwide although there is limited information about their clinical and epidemiological importance. There are currently nine recognized species of Babesia, two of Theileria, two of Cytauxzoon and one of Rangelia infecting captive and wild carnivores, including members of Canidae, Felidae, Mustelidae, Procyonidae, Ursidae, Viverridae, Hyaenidae and Herpestidae in the Americas, Eurasia and Africa...
October 10, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27661997/divergent-sapovirus-strains-and-infection-prevalence-in-wild-carnivores-in-the-serengeti-ecosystem-a-long-term-study
#14
Ximena A Olarte-Castillo, Heribert Hofer, Katja V Goller, Vito Martella, Patricia D Moehlman, Marion L East
The genus Sapovirus, in the family Caliciviridae, includes enteric viruses of humans and domestic animals. Information on sapovirus infection of wildlife is limited and is currently lacking for any free-ranging wildlife species in Africa. By screening a large number of predominantly fecal samples (n = 631) obtained from five carnivore species in the Serengeti ecosystem, East Africa, sapovirus RNA was detected in the spotted hyena (Crocuta crocuta, family Hyaenidae), African lion (Panthera leo, family Felidae), and bat-eared fox (Otocyon megalotis, family Canidae), but not in golden or silver-backed jackals (Canis aureus and C...
2016: PloS One
https://www.readbyqxmd.com/read/27630243/feline-immunodeficiency-virus-vif-n-terminal-residues-selectively-counteract-feline-apobec3s
#15
Qinyong Gu, Zeli Zhang, Lucía Cano Ortiz, Ana Cláudia Franco, Dieter Häussinger, Carsten Münk
Feline immunodeficiency virus (FIV) Vif protein counteracts feline APOBEC3s (FcaA3s) restriction factors by inducing their proteasomal degradation. The functional domains in FIV Vif for interaction with FcaA3s are poorly understood. Here, we have identified several motifs in FIV Vif that are important for selective degradation of different FcaA3s. Cats (Felis catus) express three types of A3s: single-domain A3Z2, single-domain A3Z3, and double-domain A3Z2Z3. We proposed that FIV Vif would selectively interact with the Z2 and the Z3 A3s...
December 1, 2016: Journal of Virology
https://www.readbyqxmd.com/read/27580395/multiparasitism-in-a-wild-cat-leopardus-colocolo-carnivora-felidae-in-southern-brazil
#16
Lucas Trevisan Gressler, Jéssica Caroline Gomes Noll, Ítallo Barros de Freitas, Silvia Gonzalez Monteiro
Parasitic diseases reflect the health and balance of ecosystems, affecting not only individuals but also entire populations or communities. The aim of this study was to report on the diversity of parasitic helminths detected in the feces of a wild feline in southern Brazil. Parasites were obtained from fecal samples, and four techniques were used for parasitological examination: direct examination, centrifugal flotation with zinc sulfate (Faust technique), simple sedimentation (Hoffman technique) and Baermann-Moraes...
July 2016: Revista Brasileira de Parasitologia Veterinária, Brazilian Journal of Veterinary Parasitology
https://www.readbyqxmd.com/read/27368163/determinants-of-fiv-and-hiv-vif-sensitivity-of-feline-apobec3-restriction-factors
#17
Zeli Zhang, Qinyong Gu, Ananda Ayyappan Jaguva Vasudevan, Anika Hain, Björn-Philipp Kloke, Sascha Hasheminasab, Daniel Mulnaes, Kei Sato, Klaus Cichutek, Dieter Häussinger, Ignacio G Bravo, Sander H J Smits, Holger Gohlke, Carsten Münk
BACKGROUND: Feline immunodeficiency virus (FIV) is a global pathogen of Felidae species and a model system for Human immunodeficiency virus (HIV)-induced AIDS. In felids such as the domestic cat (Felis catus), APOBEC3 (A3) genes encode for single-domain A3Z2s, A3Z3 and double-domain A3Z2Z3 anti-viral cytidine deaminases. The feline A3Z2Z3 is expressed following read-through transcription and alternative splicing, introducing a previously untranslated exon in frame, encoding a domain insertion called linker...
July 1, 2016: Retrovirology
https://www.readbyqxmd.com/read/27291980/comparison-of-the-activation-peptide-regions-of-protease-activated-receptors-par-in-members-of-the-family-felidae
#18
Mary K Boudreaux, Sara Madison Barnes
BACKGROUND: There is limited information regarding the nucleotides encoding or the predicted amino acid composition of protease-activated receptors (PAR) in cats. OBJECTIVES: The purpose of the study was to determine the nucleotide sequence and predicted amino acid composition of the activation peptide regions of protease-activated receptors PAR1, PAR3, and PAR4 in Felidae family members. METHODS: Genomic DNA isolated from whole blood samples collected from 10 domestic cats and 45 big cats representing 11 species was subjected to PCR using primers flanking the coding regions for the activation peptides of PAR1, PAR3, and PAR4...
September 2016: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/27113211/trichinella-pseudospiralis-an-elusive-nematode
#19
REVIEW
Edoardo Pozio
Trichinella pseudospiralis is one of the three species whose larvae do not encapsulate after muscle cell differentiation, and the only one infecting both mammals and birds. More than 40 years after its discovery, the epidemiology remains, at least in part, still enigmatic. The aim of this work was to reconsider the current knowledge on the T. pseudospiralis epidemiology by collecting the information available in the literature and in the website of the International Trichinella Reference Center. Over the last decade, there was an increasing number of reports of T...
November 15, 2016: Veterinary Parasitology
https://www.readbyqxmd.com/read/27080703/the-scaling-of-postcranial-muscles-in-cats-felidae-ii-hindlimb-and-lumbosacral-muscles
#20
Andrew R Cuff, Emily L Sparkes, Marcela Randau, Stephanie E Pierce, Andrew C Kitchener, Anjali Goswami, John R Hutchinson
In quadrupeds the musculature of the hindlimbs is expected to be responsible for generating most of the propulsive locomotory forces, as well as contributing to body support by generating vertical forces. In supporting the body, postural changes from crouched to upright limbs are often associated with an increase of body mass in terrestrial tetrapods. However, felids do not change their crouched limb posture despite undergoing a 300-fold size increase between the smallest and largest extant species. Here, we test how changes in the muscle architecture (masses and lengths of components of the muscle-tendon units) of the hindlimbs and lumbosacral region are related to body mass, to assess whether there are muscular compensations for the maintenance of a crouched limb posture at larger body sizes...
2016: Journal of Anatomy
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