Publication Date:
2021-05-19
Description:
Oligochaeta worms are important organisms in aquatic ecosystem. Their omnipresence makes them as
an indicator of environmental changes and health of aquatic ecosystem. The members of the family
Tubificidae and in particular, genus Limnodrilus are considered as the most tolerant oligochaets to
aquatic pollution. Therefore identification and biological characteristics of this taxon are of great help
to evaluate the ecosystem of water bodies. Limnodrilus claparedeianus were collected from Anzali
Wetland with a grab of 0.04 m2 capacity at 13 stations from August 2012 through June 2013. Penis sheath
was one of the main characteristics to identify them. Results showed their maximum and the minimum
density in spring (601.27 ± 466.8346 Ind.m-2
) and in autumn (156.12 ± 136.3 Ind.m-2
) respectively which
was significantly different (P〈0.05). Comparative spatial distribution of L. claparedeianus among 13
stations revealed significant differences in the west stations (P〈0.05). According to the results,
correlation analysis did not exhibit any relation between abundance of L. claparedeianus and total
organic matter, abundance of the species and percentage of silt in substrate sediment.
Description:
Published
Keywords:
Limnodrilus claparedeianus
;
Records
;
New records
Repository Name:
AquaDocs
Type:
Journal Contribution
,
Refereed
Format:
pp.407-416
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