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Guild structure, diversity and succession of dung beetles associated with Indian elephant dung in South Western Ghats forests.

Sabu TK, Vinod KV, Vineesh PJ - J. Insect Sci. (2006)

Bottom Line: Abundance of dwellers was high compared to rollers deviating from earlier reports on the high abundance of rollers in the afrotropical regions.Species richness and abundance of tunnelers increased with dung age and decreasing moisture up to a threshold level, followed by a decrease.Rollers and dwellers did not show any significant relationship with dung moisture content.

View Article: PubMed Central - PubMed

Affiliation: PG and Research Department of Zoology, St. Joseph's College, Devagiri, Calicut, Kerala, India. sabukthomas1@gmail.com

ABSTRACT
The diversity, guild structure and succession of dung beetles associated with Indian elephant dung is described in a deciduous forest site in Western Ghats, a hot spot of diversity in India. Dung beetles were collected using baited pitfall traps and from exposed dung pats in the forest at intervals of 1, 3, 5, 7, 15 and 21 days. Twenty-one dung beetle species belonging to the 3 major functional guilds were recorded. Abundance of dwellers was high compared to rollers deviating from earlier reports on the high abundance of rollers in the afrotropical regions. Dweller Drepanocerus setosus and tunneler Onthophagus bronzeus were the most abundant species. Dung pats aged 3-5 days attracted the highest abundance of dung beetles. Bray Curtis similarity index indicated low community similarity between different stages of succession. Species richness and abundance of tunnelers increased with dung age and decreasing moisture up to a threshold level, followed by a decrease. Rollers and dwellers did not show any significant relationship with dung moisture content. Further research is needed to estimate the dung beetle community associated with the dung pats of other mega herbivores as well as of elephant dung in other forests of the Western Ghats.

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Related in: MedlinePlus

Relationship between species richness (A) and abundance (B) of dung beetles and moisture plotted against dung age.
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Related In: Results  -  Collection

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i1536-2442-6-17-1-f03: Relationship between species richness (A) and abundance (B) of dung beetles and moisture plotted against dung age.

Mentions: Dung moisture content decreased with progressing dung exposure time in two phases (Fig. 3 A, B); a slow decline during 1–7 days (6.7%) and steep decline from 7–14 days (32.2%). During the 1st phase, richness and abundance of the beetle assemblage and the tunneler nesting guild increased up to the 3rd day followed by a gradual fall, which accelerated during the second phase (Fig. 3 A, B). Dweller abundance declined in relation to moisture and dung exposure time but richness did not show any relationship with either parameter.


Guild structure, diversity and succession of dung beetles associated with Indian elephant dung in South Western Ghats forests.

Sabu TK, Vinod KV, Vineesh PJ - J. Insect Sci. (2006)

Relationship between species richness (A) and abundance (B) of dung beetles and moisture plotted against dung age.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC2990306&req=5

i1536-2442-6-17-1-f03: Relationship between species richness (A) and abundance (B) of dung beetles and moisture plotted against dung age.
Mentions: Dung moisture content decreased with progressing dung exposure time in two phases (Fig. 3 A, B); a slow decline during 1–7 days (6.7%) and steep decline from 7–14 days (32.2%). During the 1st phase, richness and abundance of the beetle assemblage and the tunneler nesting guild increased up to the 3rd day followed by a gradual fall, which accelerated during the second phase (Fig. 3 A, B). Dweller abundance declined in relation to moisture and dung exposure time but richness did not show any relationship with either parameter.

Bottom Line: Abundance of dwellers was high compared to rollers deviating from earlier reports on the high abundance of rollers in the afrotropical regions.Species richness and abundance of tunnelers increased with dung age and decreasing moisture up to a threshold level, followed by a decrease.Rollers and dwellers did not show any significant relationship with dung moisture content.

View Article: PubMed Central - PubMed

Affiliation: PG and Research Department of Zoology, St. Joseph's College, Devagiri, Calicut, Kerala, India. sabukthomas1@gmail.com

ABSTRACT
The diversity, guild structure and succession of dung beetles associated with Indian elephant dung is described in a deciduous forest site in Western Ghats, a hot spot of diversity in India. Dung beetles were collected using baited pitfall traps and from exposed dung pats in the forest at intervals of 1, 3, 5, 7, 15 and 21 days. Twenty-one dung beetle species belonging to the 3 major functional guilds were recorded. Abundance of dwellers was high compared to rollers deviating from earlier reports on the high abundance of rollers in the afrotropical regions. Dweller Drepanocerus setosus and tunneler Onthophagus bronzeus were the most abundant species. Dung pats aged 3-5 days attracted the highest abundance of dung beetles. Bray Curtis similarity index indicated low community similarity between different stages of succession. Species richness and abundance of tunnelers increased with dung age and decreasing moisture up to a threshold level, followed by a decrease. Rollers and dwellers did not show any significant relationship with dung moisture content. Further research is needed to estimate the dung beetle community associated with the dung pats of other mega herbivores as well as of elephant dung in other forests of the Western Ghats.

Show MeSH
Related in: MedlinePlus