Behavior of Biomphalaria glabrata Say, 1818 (Gastropoda: Planorbidae) - I. Morphophysiology of the mantle cavity
Using longitudinal and transverse anatomical sections, we observed that the three cristae of the mantle of Biomphalaria glabrata (renal, rectal and dorsolateral cristae) divide the mantle cavity into three chambers which we designated air or pulmonary chamber, water inflow chamber and water outflow...
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Published in: | Memórias do Instituto Oswaldo Cruz Vol. 92; no. 2; pp. 287 - 295 |
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Main Authors: | , , |
Format: | Journal Article |
Language: | English |
Published: |
Fundação Oswaldo Cruz, Fiocruz
01-03-1997
Instituto Oswaldo Cruz, Ministério da Saúde Fundação Oswaldo Cruz (FIOCRUZ) |
Subjects: | |
Online Access: | Get full text |
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Summary: | Using longitudinal and transverse anatomical sections, we observed that
the three cristae of the mantle of Biomphalaria glabrata (renal, rectal
and dorsolateral cristae) divide the mantle cavity into three chambers
which we designated air or pulmonary chamber, water inflow chamber and
water outflow chamber. Using videotape filming, we observed the inflow
and outflow of air and water into and from the mantle cavity and we
related their probable functions such as flotation, oxygen reservoir
and transport, excreta circulation and elimination, water skeleton, and
modification of specific weight. To determine whether the air bubble
may function as a physical gill in this species we submitted three
groups of snails to different systems in which water contained the same
level of dissolved oxygen whereas the gas phases were atmospheric air,
pure nitrogen or pure oxygen. We observed the following parameters:
time of permanence on the surface, time of immersion, and frequency at
which the snails reached the surface. These results did not demonstrate
a physical gill function; morphological analysis of the mantle cavity
indicates this possibility. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1678-8060 0074-0276 0074-0276 1678-8060 |
DOI: | 10.1590/S0074-02761997000200026 |