نتایج جستجو برای: python snake
تعداد نتایج: 19110 فیلتر نتایج به سال:
ophionyssus natricis is a purely blood sucking parasite of snakes and of worldwide distribution. infected snakes often exhibit lethargy, pruritus, crusting dermatitis,and behavioral changes. ophionyssus natricis can also attack humans, causing popular vesiculo-bullous eruption of the skin. a 29 years old man working in zoo,sari, mazandaran, iran, presented itchy papullar eruption of the skin. h...
Snake venom gene evolution has been studied intensively over the past several decades, yet most previous studies have lacked the context of complete snake genomes and the full context of gene expression across diverse snake tissues. We took a novel approach to studying snake venom evolution by leveraging the complete genome of the Burmese python, including information from tissue-specific patte...
Cryptosporidium is an important pathogen causing gastrointestinal disease in snakes and is distributed worldwide. The main objectives of this study were to detect and identify Cryptosporidium species in captive snakes from exotic pet shops and snake farms in Thailand. In total, 165 fecal samples were examined from 8 snake species, boa constrictor (Boa constrictor constrictor), corn snake (Elaph...
Wild bonnet macaques (Macaca radiata) were studied in southern India to assess their ability to discriminate non-venomous, venomous and predatory snakes. Realistic snake models were presented to eight troops of bonnet macaques at feeding stations and their behavior was video-recorded 3 min before and 3 min after snake exposure. Snakes presented were: (1) venomous Indian cobra (Naja naja) displa...
Snakes possess many extreme morphological and physiological adaptations. Identification of the molecular basis of these traits can provide novel understanding for vertebrate biology and medicine. Here, we study snake biology using the genome sequence of the Burmese python (Python molurus bivittatus), a model of extreme physiological and metabolic adaptation. We compare the python and king cobra...
Pentastomes are worm-like endoparasites of the phylum Pentastomida found principally in the respiratory tract of reptiles, birds, and mammals. They cause a zoonotic disease known as pentastomiasis in humans and other mammals. The autopsy of a Nigerian royal python (Python regius) revealed two yellowish-white parasites in the lungs, tissue necrosis and inflammatory lesions. The parasite was conf...
Limb reduction and loss are hallmarks of snake evolution. Although advanced snakes are completely limbless, basal and intermediate snakes retain pelvic girdles and small rudiments of the femur. Moreover, legs may have re-emerged in extinct snake lineages [1-5], suggesting that the mechanisms of limb development were not completely lost in snakes. Here we report that hindlimb development arrests...
mystery of how the snake lost its legs might make a good 'Just so' story but it's also a tantalizing developmental question. Snakes have hundreds of similar vertebrae, as shown by the stained skeleton of a python embryo, Antaresia maculosa, (24 days after egg-laying) at top left. Snakes have no forelimbs but pythons have a pair of hindlimb rudiments (removed in picture at top right) at the junc...
27 Available data suggest that snake hemoglobins (Hbs) are characterized by a combination of unusual 28 structural and functional properties relative to the Hbs of other amniote vertebrates, including 29 oxygenation-linked tetramer-dimer dissociation. However, standardized comparative data are lacking for 30 snake Hbs, and the Hb isoform composition of snake red blood cells has not been systema...
Available data suggest that snake hemoglobins (Hbs) are characterized by a combination of unusual structural and functional properties relative to the Hbs of other amniote vertebrates, including oxygenation-linked tetramer-dimer dissociation. However, standardized comparative data are lacking for snake Hbs, and the Hb isoform composition of snake red blood cells has not been systematically char...
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