Exposure to environmentally relevant oxytetracycline induced gut histopathological damages and microbiota alterations of Pelophylax nigromaculatus larvae

2021 ◽  
Author(s):  
Jing Ya ◽  
Weixuan Kong ◽  
Wei Chen ◽  
Gang Wang ◽  
Hongfeng Zhao
Keyword(s):  
Pelophylax Nigromaculatus

Low concentrations of 17β-trenbolone induce female-to-male reversal and mortality in the frog Pelophylax nigromaculatus

2015 ◽  
Vol 158 ◽  
pp. 230-237 ◽  
Author(s):  
Yuan-Yuan Li ◽  
Wei Xu ◽  
Xiao-Ran Chen ◽  
Qin-Qin Lou ◽  
Wu-Ji Wei ◽  
...  
Keyword(s):  
Low Concentrations ◽  
Pelophylax Nigromaculatus

A game of patience between predator and prey: waiting for opponent’s action determines successful capture or escape

2020 ◽  
Vol 98 (6) ◽  
pp. 351-357
Author(s):  
Nozomi Nishiumi ◽  
Akira Mori
Keyword(s):  
Decision Making ◽  
Optimal Decision ◽  
Field Observations ◽  
Flight Behaviour ◽  
Threshold Distance ◽  
Optimal Decision Making ◽  
Successful Capture ◽  
Pelophylax Nigromaculatus

When predator and prey animals face each other, preemptive actions by both sides are considered to mediate successful capture or escape. However, in spite of the general presumption, some animals, such as predatory snakes and their frog prey, occasionally remain motionless or move slowly for a while before striking or escaping, respectively. To clarify the possible advantages of this behaviour, we examined interactions between Japanese Four-lined Ratsnakes (Elaphe quadrivirgata (H. Boie, 1826)) and Black-spotted Pond Frogs (Pelophylax nigromaculatus (Hallowell, 1861)), focusing especially on kinematic features of strike behaviour of snakes and flight behaviour of frogs in close quarters. Staged encounter experiments and field observations revealed that counteractions against an opponent’s preemptive actions are effective for both snakes and frogs until a certain distance because they are hardly able to change their trajectories once they initiate strike or escape behaviours. Snakes and frogs also appropriately switched their behaviour from waiting for the opponent’s action to taking preemptive action at this threshold distance. These results suggested the occurrence of a game of patience between snakes and frogs in which they wait for the opponent’s action to achieve effective countermeasures. Our study provides new insights for predicting optimal decision-making by predators and prey and will contribute to a better understanding of their strategies.

Effects of triclosan on gonadal differentiation and development in the frog Pelophylax nigromaculatus

2018 ◽  
Vol 64 ◽  
pp. 157-165 ◽  
Author(s):  
Juan Chen ◽  
Tan Meng ◽  
Yuanyuan Li ◽  
Kun Gao ◽  
Zhanfen Qin
Keyword(s):  
Gonadal Differentiation ◽  
Pelophylax Nigromaculatus

scholarly journals Candidate Animal Disease Model of Elizabethkingia Spp. Infection in Humans, Based on the Systematic Pathology and Oxidative Damage Caused by E. miricola in Pelophylax nigromaculatus

2019 ◽  
Vol 2019 ◽  
pp. 1-13
Author(s):  
Xiaoli Huang ◽  
Yang Feng ◽  
Hong Tang ◽  
Guanqing Xiong ◽  
Liangyu Li ◽  
...  
Keyword(s):  
Oxidative Damage ◽  
Neurological Diseases ◽  
Disease Model ◽  
Infection Model ◽  
Animal Disease ◽  
Animal Disease Model ◽  
Brain Abscesses ◽  
Oxidative System ◽  
Pelophylax Nigromaculatus ◽  
Host Brain

Most species of the genus Elizabethkingia are pathogenic to humans and animals, most commonly causing meningitis. However, our understanding of the pathogenic mechanisms involved is poor and there have been few pathological studies of Elizabethkingia spp. in animals. To understand the host injury induced by Elizabethkingia spp., we established a model of E. miricola infection in the black-spotted frog (Pelophylax nigromaculatus). The systematic pathology in and oxidative damage in the infection model were investigated. Our results show that recently isolated E. miricola is a bacterium that mainly parasitizes the host brain and that neurogenic organs are the predominant sites of damage. Infection mainly manifested as severe brain abscesses, meningoencephalitis, necrotic spondylitis, and necrotic retinitis. The liver, spleen, kidney, gastrointestinal tract, and lung were also affected to varying degrees, with bacterial necrotic inflammation. P. nigromaculatus also suffered enormous damage to its oxidative system during E. miricola infection, which may have further aggravated its disease state. Our results provide a preliminary reference for the study and treatment of Elizabethkingia spp.-induced neurological diseases in animals.

Tetrabromoethylcyclohexane affects gonadal differentiation and development in the frog Pelophylax nigromaculatus

2017 ◽  
Vol 192 ◽  
pp. 40-47 ◽  
Author(s):  
Peng-Yan Liu ◽  
Tan Meng ◽  
Yuan-Yuan Li ◽  
Man Cai ◽  
Xing-Hong Li ◽  
...  
Keyword(s):  
Gonadal Differentiation ◽  
Pelophylax Nigromaculatus

scholarly journals Rampant historical mitochondrial genome introgression between two species of green pond frogs, Pelophylax nigromaculatus and P. plancyi

2010 ◽  
Vol 10 (1) ◽  
pp. 201 ◽  
Author(s):  
Kui Liu ◽  
Fang Wang ◽  
Wei Chen ◽  
Lihong Tu ◽  
Mi-Sook Min ◽  
...  
Keyword(s):  
Mitochondrial Genome ◽  
Pelophylax Nigromaculatus
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