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Ctenoid - Wikipedia, the free encyclopedia
Ctenoid means 'having the margin toothed like a comb'. It is used to the scales of some fishes, such as perciforms that have such a toothed margin. Ctenoid scales are essentially cycloid scales with ...
en.wikipedia.org/wiki/Ctenoid |
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Ctenoid - Definition of Ctenoid at Dictionary.com a free online dictionary with pronunciation, synonyms, and translation of Ctenoid. Word of the Day and Crossword Puzzles. ... Use ctenoid in a Sentence...
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As cycloid and ctenoid scales increase in size, growth rings called circuli become visible. These rings look a little like the growth rings in the trunk of a tree. During the cooler months of the year the scale (and otoliths) grows more slowly and the circuli are closer together leaving a band called an annulus.
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Definition of ctenoid from the Merriam-Webster Online Dictionary with audio pronunciations, thesaurus, Word of the Day, and word games. ... : having the margin toothed <ctenoid scale>; also : having or consisting of ctenoid scales <ctenoid fishes>
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Definition of ctenoid from Webster's New World College Dictionary. Meaning of ctenoid. Pronunciation of ctenoid. ctenoid synonyms. ctenoid usage examples and ctenoid quotes. ... "ctenoid." Webster's New World College Dictionary. 2009...
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Britannica online encyclopedia article on ctenoid scale (anatomy), ...but are covered with a peculiar enamel-like substance called ganoin. It is thought that true teeth developed from placoid scales. The advanced fish have either cycloid scales (e.g., carp) or ctenoid scales (e.g., perch; ... CREATE MY ctenoid scal...
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Ctenoid: Biology Comblike. ... The distinction between the ctenoid scale types, therefore, is primarily based upon their form. ... Ctenoid Fish Scale - Three general types of ctenoid scales have been categorized, but each type is composed of two key sections; a rigid surface layer chiefly consisting of crystallized calcium...
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Derived from the Greek word cteno, meaning 'comb', the ctenoid fish scale name refers to comb-like ctenii, which decorate the edges of the scale, as illustrated in the relatively low magnification MIC-D digital image presented below. ... View a medium magnification image of a ctenoid fish scale.
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Similar to trees, the age of a fish may be estimated by examining growth rings on its ctenoid scales. ... Similar to trees, the age of a fish may be estimated by examining growth rings on its ctenoid scales. This is because as a fish grows, so does its scales. The increase in size leaves rings, known as circuli,
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What is a(n) ctenoid scale – Our zoology dictionary has ecology, physiology, genetics of ctenoid scale, and the evolution of ctenoid scale. Encyclopedia.com: Dictionary of Zoology ... ctenoid scale In bony fish, a type of scale that has many tiny, tooth-like processes (ctenii) in the posterior, or outer segment.
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