Tadpoles: The Biology of Anuran Larvae by Roy W. McDiarmid, Ronald Altig PDF

By Roy W. McDiarmid, Ronald Altig

ISBN-10: 0226557634

ISBN-13: 9780226557632

In our personal juvenile level, many folks got our wide-eyed advent to the wonders of nature via looking at the metamorphosis of swimming tadpoles into jumping frogs and toads. the hot alarming declines in amphibian populations world wide and the suitability of amphibians to be used in answering examine questions in disciplines as assorted as molecular systematics, animal habit, and evolutionary biology have concentrated huge, immense cognizance on tadpoles. regardless of this renowned and medical curiosity, rather little is understood approximately those attention-grabbing creatures.In this imperative reference, major specialists on tadpole biology relate what we presently find out about tadpoles and what we'd study from them sooner or later. Tadpoles presents special summaries of tadpole morphology, improvement, habit, ecology, and environmental body structure; explores the evolutionary outcomes of the tadpole level; synthesizes on hand info on their biodiversity; and provides a standardized terminology and an exhaustive literature overview of tadpole biology.

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Tadpoles: The Biology of Anuran Larvae by Roy W. McDiarmid, Ronald Altig PDF

In our personal juvenile degree, many people got our wide-eyed creation to the wonders of nature by way of looking at the metamorphosis of swimming tadpoles into jumping frogs and toads. the new alarming declines in amphibian populations around the globe and the suitability of amphibians to be used in answering study questions in disciplines as different as molecular systematics, animal habit, and evolutionary biology have concentrated huge, immense consciousness on tadpoles.

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Additional info for Tadpoles: The Biology of Anuran Larvae

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A) Single, sinistral, Dendvobates tiwononus Single, sinistral with long spiracular tube, Otophynepybumi (Microhylidae). ( C )Dual, lateral, Lepidabatruchw LlanennS (Jiptodactylidae). (E) Single, posterior ventral, KahlapuLhva (Microhylidae). (F) Single, midventral (on chest),Acaphw tmei (Ascaphidae). includeAcrrs and Heleophvyne. , jaw sheaths) for a microhylid tadpole, including a spiracle that is between midventral and sinistral. 4. Because of differences in the pattern of fusion between the opercular fold and body wall, the spiracular aperture may face various drections and have different shapes and tube codgurations.

Rrcaphm; phyllomedusine hylids), present only as a partial or complete ridge, or present as the wall of a tube of various lengths that posteriorly or terminally is free from the body wall with the posterior tip free from the body wall (fig. 5A-D). The lateral wall may end anterior to, at the same plane as, or posterior to the insertion of the medal wall. The spatial limits of the spiracular walls determine the shape and orientation of the aperture. In certain cases the aperture faces laterally and is commonly smaller than the bore of the s~iraculartube.

Presumptive cells of the gland are present by the end of gastrulation, and differentiated cells start to form after n e d a t i o n is completed. These glands produce an enzyme that dissolves or weakens the egg jehes and facilitates hatching (Carroll and Hedrick 1974; K. W. Cooper 1936). Yoshzaki (1973, 1974, 1975, 1991), Yoshzaki and Katagiri ( 1975), ,, and Yoshizaki and Yamamoto ( 1979) discussed the ontogeny of these glands and their enzymes (also see Gollman and Gollman 1993a; Noble 1926a).

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Tadpoles: The Biology of Anuran Larvae by Roy W. McDiarmid, Ronald Altig


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