Occurrence and morphological variability of Gyraulus crista (Gastropoda: Pulmonata: Planorbidae) on different types of substratum in woodland ponds

Gyraulus crista is often a dominant component of lentic freshwater snail communities because it may occur in densities of hundreds of individuals/m² across continents and in lentic water types. A study on the occurrence and conchological variability of the shell of G. crista was carried out on five...

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Bibliographic Details
Published in:Biológia 2013-08, Vol.68 (4), p.679-686
Main Authors: Spyra, Aneta, Strzelec, Małgorzata
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Cell Biology
Freshwater
freshwater snails
Gastropoda
Gyraulus
Gyraulus crista
leaves
lentic systems
Life Sciences
Microbiology
morphological form
physicochemical properties
Planorbidae
Plant Sciences
ponds
Pulmonata
Section Zoology
sediments
shell
snails
woodland ponds
Zoology
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Summary:Gyraulus crista is often a dominant component of lentic freshwater snail communities because it may occur in densities of hundreds of individuals/m² across continents and in lentic water types. A study on the occurrence and conchological variability of the shell of G. crista was carried out on five different types of substrates in the anthropogenic woodland ponds at thirteen study sites. In order to answer the question of whether the existence of this species in different forms is affected by the quality of the inhabited substrates, various physico-chemical properties of the water, different bottom sediments and water level fluctuations, we examined the variation of forms across 5990 specimens of G. crista in woodland ponds. This research, which was supported by Redundancy Analysis (RDA), showed a highly significant association of G. c. spinulosus with leaf deposits and G. c. cristatus for T. latifolia remains. G. crista nautileus was mainly associated with T. latifolia and also with G. aquatica remains. They also showed no statistically significant relationship between the occurrence of particular conchological G. crista forms and different physico-chemical properties of water.
ISSN:0006-3088
1336-9563
DOI:10.2478/s11756-013-0197-z