Close

Create a link to this page

Copy and paste this link tag into your Web page or blog:

<a href="http://www.encyclopedia.com/doc/1O8-Apoda.html" title="Facts and informations about Apoda">Apoda</a>

Apoda

Apoda (Gymnophiona, caecilians; class Amphibia) An extant order of amphibians, now confined to the tropics and subtropics, that have become adapted to a burrowing life and look like large earthworms. They are the only living amphibians some species of which have retained scales, although the scales are vestigial and hidden in folds of the skin. They have no limbs or limb girdles, eyes that are rudimentary, vestigial hearing apparatus, a sensory feeler beneath the eye, no gills or gill slits in the adults, and a tail that is small or absent. Fertilization is internal, as a cloacal copulatory organ is developed in the male. There are three families: Caecilidae; Ichthyophiidae; and Typhlonectidae.

Related newspaper, magazine, and trade journal articles from HighBeam Research

(Including press releases, facts, information, and biographies)

	Sharks.(shark behavior and anatomy)(includes teaching guide, games, puzzles and crafts) Magazine article from: Science Weekly; 9/25/1998; 700+ words ; ...also are different from bony fish, because they have pairs of gill slits, in separate pouches, for collecting oxygen. Sharks also usually...Hammerhead and the mottled Wobbegong. Sharks have between 5 and 7 gill slits. Their skin is covered with tough scales called denticles... Read more
	Parapenaeon consolidatum (isopoda: bopyridae) and the relative growth and reproduction of Metapenaeopsis dalei (decapoda: penaeidae) in South Korea. Magazine article from: Journal of Shellfish Research; 4/1/2004; ; 700+ words ; ...for parasitized female shrimp. Growth of the petasma, the copulatory organ of male shrimp, was significantly affected by the parasite...totally inhibited. She also showed that a petasma, the male copulatory organ, was not formed in parasitized male shrimp. Chu & Leong... Read more
	The male genitalia of the family Atemnidae (Pseudoscorpiones). Magazine article from: Journal of Arachnology; 9/1/2005; ; 700+ words ; ...deposited on the substratum. The female is later inseminated from the sperm in this spermatophore. Accordingly the male has no copulatory organ, but the whole of the male genitalia is internally situated with the opening located between the second and third sternite... Read more
	REQUIEM SHARK.(Brief Article)(Poem) Magazine article from: Poetry; 3/1/2000; ; 210 words ; ...body on the rippled sand in turtle grass with an entourage of neon-blue barjacks, and a remora wriggling in and out of its gill-slits. I even want to touch it again, and this time not just with my fingertips, but my palm, loveline and lifeline, my wrist, the... Read more
	The undersea world of Trevor Norton.(Underwater to Get Out of the Rain a Love Affair with the Sea)(Brief article)(Book review) Magazine article from: National Fisherman; 5/1/2006; 188 words ; ...was almost identical to that of seawater. The ocean was truly in nay veins and briefly, when still in the womb, I even had gill slits. Thus began a lifelong love affair with the sea that turned him from the worst boy in school, in his headmaster's eyes ( I... Read more
	Sharks. Magazine article from: Science Weekly; 11/9/2007; 700+ words ; ...swimmers. A shark's fins help it to balance and change direction. A shark's pectoral and pelvic fins act like aircraft wings. Gill slits are long, thin openings behind their heads. As a shark breathes, water goes into the mouth and passes over its gills. Sharks... Read more
	Basking sharks return to Isle of Man waters. Newspaper article from: Isle of Man Newspapers (Douglas, England); 5/28/2008; 612 words ; ...and 'maximus' meaning great. They are a mottled colour, similar to that of mackerel skin, with tiny vestigal teeth and huge gill slits that almost encircle the head. The dorsal fin can be two metres high out of the water and the mouth one metre wide. They are... Read more
	Cryptobranchid update: eastern hellbender/Ozark hellbender "North America's Largest Salamander".(Report) Newspaper article from: Endangered Species Update; 4/1/2007; ; 700+ words ; ...buoyancy control (Danch, 1996). A huge flattened head, dorsoventrally compressed body, small eyes without eyelids, and spiracle gill slits all demonstrate its prehistoric attributes. Adult animals have four digits on each fore limb and five digits on each hind... Read more

For more facts and information, see all related premium articles

Related entries from encyclopedias, dictionaries, and thesauruses

	Ichthyophiidae Book article from: A Dictionary of Zoology Ichthyophiidae ( ichthyophids ; class Amphibia , order Apoda ) A family of amphibians in which the adults are terrestrial and have functional eyes and a small tail. Eggs are laid on land... Read more
	middle ear Book article from: A Dictionary of Zoology middle ear In tetrapods, except for Urodela , Apoda , and snakes ( Serpentes ), the central chamber of the ear, derived from a gill pouch , lying between the tympanic membrane and... Read more
	Typhlonectidae Book article from: A Dictionary of Zoology Typhlonectidae ( typhlonectids ; class Amphibia , order Apoda ) A family of caecilians that are aquatic throughout life. The tail is absent. There are no dermal scales. Reproduction is ovoviviparous... Read more
	Amphibia Book article from: A Dictionary of Zoology Amphibia ( amphibians ; phylum Chordata , subphylum Vertebrata ) A class represented today by just three groups, the Apoda (caecilians), Urodela (salamanders), and Anura (frogs and toads). The class was much more varied formerly and in the Triassic... Read more
	Microsauria Book article from: A Dictionary of Zoology Microsauria A group of very small, Carboniferous and Permian amphibians that are thought to be ancestral to the modern Apoda . Read more

See all related entries