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... Stressful situations induce an increase in the production of reactive oxygen species (ROS) which can lead to molecular damage and alteration of cell function. The introduction of new potential predators induces physiological stress in native fauna. However, behavioral responses have been reported in preys, demonstrating an induction of the defenses against alien species. Behavioral and antioxidant ...
snakes, etc ; DNA damage; Pantherophis guttatus; antioxidant activity; antipredatory behavior; biomarkers; brain; comet assay; dose response; ecotoxicology; erythrocytes; glutathione; locomotion; males; mice; nanoplastics; polystyrenes; principal component analysis; risk; toxicity; Show all 20 Subjects
Abstract:
... Although the in vivo toxicity of nanoplastics (NPs) has already been reported in different model systems, their effects on mammalian behavior are poorly understood. Thus, we aimed to evaluate whether exposure to polystyrene (PS) NPs (diameter: 23.03 ± 0.266 nm) alters the behavior (locomotor, anxiety-like and antipredator) of male Swiss mice, induces brain antioxidant activity, and erythrocyte DNA ...
... Snakes are a diverse group of reptiles, having colonized almost every environment on the planet. Multiple snake lineages have independently evolved semiarboreal or completely arboreal species. As snakes lack limbs, the challenges of moving and feeding in an arboreal environment are numerous. Here we compare the prey-handling ability of the semiarboreal boa constrictor to the terrestrial ball pytho ...
snakes, etc ; Squamata; habitats; herpetology; streams; India; Show all 6 Subjects
Abstract:
... This study provides the first morphological data from a female specimen of the recently described Stoliczkia vanhnuailianai from Mizoram, Northeast India. Based on a new individual collected from a stream habitat around 80 km northwards from the type locality, we provide an expanded summary of diagnostic key characters of the species, additional notes on the habitat, and new genetic data for this ...
snakes, etc ; Bothrops; bone formation; radiography; tissues; ultrasonics; Show all 6 Subjects
Abstract:
... The golden lancehead (Bothrops insularis) is a critically endangered and island endemic snake. A remarkable characteristic of golden lanceheads is the high frequency of females showing hemiclitores. Here, we use radiography to identify morphological and structural differences between the hemipenes and hemiclitores in captive individuals. Sex was identified using the probing method and confirmed by ...
snakes, etc ; Crotalus; body temperature; cameras; predation; probability; Show all 6 Subjects
Abstract:
... Body temperature influences the activity and behavior of reptiles, with warmer body temperatures typically being associated with improved performance. Nocturnal ambush-hunting rattlesnakes would therefore benefit from selecting warmer substrate hunting sites, allowing them to stay in ambush longer as the environment cools and, presumably, to have a higher probability of striking prey successfully. ...
snakes, etc ; deionization; desalination; electrodes; flow resistance; green chemistry; hydrodynamics; Show all 7 Subjects
Abstract:
... A spiral mosquito-repellent (MR) incense-shaped (MR-shape) channel was designed and equipped in a flow electrode capacitive deionization system. Computational fluid dynamics was conducted to analyze the hydrodynamic performance of the suspension electrode flow process. The current collector that equipped the newly designed MR-shaped channel showed low flow resistance and almost no stagnant regions ...
snakes, etc ; amphibians; behavior; exudation; odors; pain; prey species; rodents; Show all 8 Subjects
Abstract:
... Bites of the western hognose snake Heterodon nasicus are considered to have a little medical effect, as opposed to other non-front-fanged colubroid snakes (NFFC). The present work highlights 2 cases of H. nasicus bites, likely triggered by negligent handling involving latent prey - rodent or amphibian - odor. In both cases, medical symptoms like swelling, pain and bite site exudation were well def ...
snakes, etc ; Colubridae; cerrado; color; head; museums; new species; Paraguay; Show all 8 Subjects
Abstract:
... A new species of Phalotris from the nasutus group, Phalotris shawnella sp. nov., is described. It can be distinguished from the other members of the group by having the following combination of characters: 1) fifth supralabial in contact with parietal, 2) vertebral stripe present, 3) yellowish nuchal collar (2 or 3 dorsal scales long), 4) dull reddish color of head, 5) broad, solidly or near solid ...
snakes, etc ; Hoplias malabaricus; dose response; freshwater fish; models; venoms; Show all 6 Subjects
Abstract:
... The aim of this study was to evaluate the effects of different doses of alternagin-C, a disintegrin-like protein from Rhinocerophis alternatus venom, on myocardial contractility of the freshwater fish Hoplias malabaricus, an alternative model to contractile function studies. Alternagin-C treatment exhibited a hormetic-like dose-response curve with a strong positive inotropism and enhanced cardiac ...
snakes, etc ; Dipsadidae; data collection; death; ecology; road kills; sample size; Show all 7 Subjects
Abstract:
... Understanding spatiotemporal patterns of roadkill is challenging but essential for mitigation. Spatiotemporal roadkill patterns are seldom studied for single species at broad scales. We evaluated the spatiotemporal variation of roadkill of the water snake Helicops infrataeniatus (Squamata, Dipsadidae) in three Brazilian roads stretching 540 km and spanning up to 6 years of monitoring. We modelled ...
snakes, etc ; Colubridae; Pythonidae; environmental enrichment; humans; medicine; tongue; wildlife; zoos; Show all 9 Subjects
Abstract:
... Environmental enrichment is a strategy used to improve the welfare of animals under human care. While enrichment techniques for mammals and birds have been studied extensively, reptilian enrichment has received less attention. There has been an increase in enrichment programs for reptiles in zoological institutions, however many are not accompanied by behavioral studies. Detailed recording of beha ...
snakes, etc ; World Health Organization; computer simulation; rural population; snake bites; therapeutics; Show all 6 Subjects
Abstract:
... Ophidism is a serious health problem worldwide and is included in the World Health Organization's (WHO's) list of Neglected Tropical Diseases. Although snakebite envenoming requires emergency treatment, currently the only treatment recommended by WHO is serotherapy, which has some disadvantages such as low access to the rural population, low effectiveness in neutralizing local effects, and high co ...
snakes, etc ; Elapidae; mitochondrial genome; models; multigene family; nanopores; phylogeny; replication origin; Show all 8 Subjects
Abstract:
... Mitochondrial genomes of four elapid snakes (three marine species [Emydocephalus ijimae, Hydrophis ornatus, and Hydrophis melanocephalus], and one terrestrial species [Sinomicrurus japonicus]) were completely sequenced by a combination of Sanger sequencing, next-generation sequencing and Nanopore sequencing. Nanopore sequencing was especially effective in accurately reading through long tandem rep ...
snakes, etc ; Dipsadidae; Neotropics; ductus deferens; herpetology; kidneys; spring; summer; testes; Brazil; Show all 10 Subjects
Abstract:
... Snakes exhibit considerable variation in reproductive patterns. However, the cycle of the sexual segment of the kidney and the testicular activity remain unknown for most Neotropical snake species. The dipsadine Atractus pantostictus is a fossorial snake species occurring in central and southeastern Brazil. The present study describes the reproductive cycle of males of this species, providing macr ...
snakes, etc ; biochemistry; data collection; digestion; prediction; small intestine; thermic effect of food; Show all 7 Subjects
Abstract:
... Animals which feed infrequently and on large prey, like many snake species, are characterized by a high magnitude of gut upregulation upon ingesting a meal. The intensity of intestinal upregulation was hypothesized to be proportional to the time and energy required for food processing (Specific-Dynamic-Action; SDA); hence, a positive correlation between the scope of intestinal growth and SDA respo ...
snakes, etc ; anxiety; education; public health; risk; snake bites; surveys; tropical diseases; Indonesia; Show all 9 Subjects
Abstract:
... Snakes are commonly associated with feelings of anxiety or disgust, and snake conservation is often hindered by negative attitudes and perceptions. Although global snake populations are generally in decline, snakebite envenomation (SBE) continues to be recognized as a serious public health issue, particularly in rural areas of tropical and subtropical countries. Data on SBE, a neglected tropical d ...
snakes, etc ; blood serum; chromatography; comparative study; phospholipase A2; phospholipases; snake bites; venoms; Show all 8 Subjects
Abstract:
... This work compared the presence of phospholipase A₂ inhibitors (PLIs) in the serum of 19 snake species maintained at Instituto Butantan to better understand the mechanisms of venom resistance in snakes and improve the treatment of snakebite. PLI was isolated from blood of 19 snake species by one-step chromatography and identified in all samples, besides its identity was confirmed through the inter ...
snakes, etc ; bioaccumulation; body size; diet; flame retardants; lipids; pollution; statistical analysis; wildlife; China; Show all 10 Subjects
Abstract:
... Despite several studies having addressed the bioaccumulation of Dechlorane Plus (DP) flame retardant in wildlife, there is still a dearth of information for reptiles in general and for snakes in particular. Here, we report the residue levels and trophic transfer of syn-, anti-, and anti-Cl₁₁-DP in a frog-eating snake—namely, the striped keelback snake Amphiesma stolata—from a DP hotspot in South C ...
snakes, etc ; captive animals; etiological agents; fungi; monitoring; mortality; mycoses; predation; research; thermoregulation; wildlife; Show all 11 Subjects
Abstract:
... Ophidiomyces ophidiicola (Oo) is one of the most relevant fungal pathogens for snakes. It is the etiological agent of ophidiomycosis, an emerging disease causing dysecdysis, skin abnormalities, crusting cutaneous lesions, and ulcerations. Despite this major tegumentary “tropism”, Oo infection can be systemic and it is capable of inducing visceral lesions. Moreover, ophidiomycosis may lead to abnor ...