The filter apparatus of Rana temporaria and Bufo bufo larvae (Amphibia, Anura)

In larvae of Rana temporaria and Bufo bufo the location of filter apparatus within the larval organization, the arrangement of the morphological parts as branchial food trap, ventral velum, and filter rows, as well as their surface anatomy, are similar to that of other species of Orton's larval...

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Bibliographic Details
Published in:Zoomorphology 1985-12, Vol.105 (6), p.345-355
Main Author: VIERTEL, B
Format: Article
Language:English
Subjects:
Biological and medical sciences
Bufo bufo
Freshwater
Fundamental and applied biological sciences. Psychology
Rana temporaria
Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics
Vertebrates: respiratory system
Water and amphibous breathing
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Summary:In larvae of Rana temporaria and Bufo bufo the location of filter apparatus within the larval organization, the arrangement of the morphological parts as branchial food trap, ventral velum, and filter rows, as well as their surface anatomy, are similar to that of other species of Orton's larval type IV. The means by which mucous with its entrapped food particles is transported from the filter rows to the esophagus is finally resolved. The dorsally positioned ciliary cushion extends far ventrally between the filter plates. From their contact with the filter rows, the cilia transport the mucous to Kratochwill's caudally positioned "Flimmerrinne" and from there to the esophagus. The original chordate priniciple of mucous entrapment and ciliary transport is thus retaained by these anuran larvae. The only modification specific to the latter is the division into a ventral filter apparatus, whose epithelia serve for mucus entrapment, and a dorsal ciliary area.
ISSN:0720-213X
1432-234X
DOI:10.1007/BF00312278