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Scutes on a crocodile. Reptile skin is covered with scutes or scales which, along with many other characteristics, distinguish reptiles from animals of other classes. They are made of alpha and beta-keratin and are formed from the epidermis (contrary to fish, in which the scales are formed from the dermis).
Snake scales are formed by the differentiation of the snake's underlying skin or epidermis. [7] Each scale has an outer surface and an inner surface. The skin from the inner surface hinges back and forms a free area which overlaps the base of the next scale which emerges below this scale. [8] A snake hatches with a fixed number of scales.
Ophionyssus natricis, the reptile mite, is a parasitic mite most commonly found on snakes, but also occurring on captive lizards, turtles, crocodiles, and other reptiles. [1] The parasites feed on snakes, which cause the bodies of the mites to be engorged with blood and fluids from the snake.
Snakeskin may either refer to the skin of a live snake, the shed skin of a snake after molting, or to a type of leather that is made from the hide of a dead snake. Snakeskin and scales can have varying patterns and color formations, providing protection via camouflage from predators. [1]
Most monitor lizards are almost entirely carnivorous, [14] consuming prey as varied as insects, crustaceans, arachnids, myriapods, molluscs, fish, amphibians, reptiles, birds, and mammals. Most species feed on invertebrates as juveniles and shift to feeding on vertebrates as adults.
A study using skin lipids indicates chemical cues can be used to modify movements of invasive reptiles in their non-native range, which could be useful in management strategies. [31] The Argentine black and white tegu exhibits similar behavior, such as a marked "pausing and turning" as they trail in the spring.
Erysipelothrix rhusiopathiae is a Gram-positive, catalase-negative, rod-shaped, non-spore-forming, nonacid-fast, nonmotile bacterium.Distributed worldwide, E. rhusiopathiae is primarily considered an animal pathogen, causing the disease known as erysipelas that may affect a wide range of animals.
A chytrid-killed frog Chytridiomycosis in Atelopus varius—two sporangia containing numerous zoospores are visible.. Chytridiomycosis (/ k aɪ ˌ t r ɪ d i ə m aɪ ˈ k oʊ s ɪ s / ky-TRID-ee-ə-my-KOH-sis) is an infectious disease in amphibians, caused by the chytrid fungi Batrachochytrium dendrobatidis and Batrachochytrium salamandrivorans.