MA. Drumond
Life history, distribution and abundance of the giant earthworm Rhinodrilus alatus RIGHI 1971: conservation and management implications
Drumond, MA.; Guimarães, AQ.; El Bizri, HR.; Giovanetti, LC.; Sepúlveda, DG.; Martins, RP.
Authors
AQ. Guimarães
Dr Hani Rocha El Bizri H.RochaElBizri@salford.ac.uk
Lecturer in Conservation Biology
LC. Giovanetti
DG. Sepúlveda
RP. Martins
Abstract
Rhinodrilus alatus is an endemic giant earthworm of the Brazilian Cerrado hotspot used as live bait for about 80 years. The goal of this study was to gather ecological data about this species, which will support the establishment of management strategies. The life history, distribution and abundance of R. alatus were investigated in Cerrado, pastures and Eucalyptus plantation areas following the harvesting activities of the local extractors of this species. We found that this earthworm is abundant in all of the sampled areas, showing its resilience to land-use conversion. The Capture Per Unit Effort was 4.4 ± 5 individuals per 100 metres of transect and 5.6 ± 3 individuals per hour. The earthworm's annual cycle is markedly seasonal, with an aestivation period throughout the driest and coldest season of the year. Significant differences in the length and diameter of the body and in the diameter and depth of the aestivation chambers were found between the juveniles and adults. The distribution range of the species was expanded from two to 17 counties. The life history, abundance, distribution and resilience of R. alatus to certain perturbations are key elements to be considered in conservation and management strategies for this species.
Citation
Drumond, M., Guimarães, A., El Bizri, H., Giovanetti, L., Sepúlveda, D., & Martins, R. (2013). Life history, distribution and abundance of the giant earthworm Rhinodrilus alatus RIGHI 1971: conservation and management implications. #Journal not on list, 73(4), 699-708. https://doi.org/10.1590/s1519-69842013000400004
Journal Article Type | Article |
---|---|
Publication Date | 2013-11 |
Deposit Date | May 21, 2023 |
Publicly Available Date | May 22, 2023 |
Journal | Brazilian Journal of Biology |
Peer Reviewed | Peer Reviewed |
Volume | 73 |
Issue | 4 |
Pages | 699-708 |
DOI | https://doi.org/10.1590/s1519-69842013000400004 |
Keywords | General Agricultural and Biological Sciences |
Files
Published Version
(1.6 Mb)
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Publisher Licence URL
http://creativecommons.org/licenses/by-nc/3.0/
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