Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni
The effects of snail density on Biomphalaria alexandrina parasitized with Schistosoma mansoni were investigated. Laboratory experiments were used to quantify the impact of high density on snail growth, fecundity, and survival. Density-dependent birth rates of snails were determined to inform mathema...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2010-01-01
|
| Series: | Journal of Parasitology Research |
| Online Access: | http://dx.doi.org/10.1155/2010/186792 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849306163481411584 |
|---|---|
| author | T. D. Mangal S. Paterson A. Fenton |
| author_facet | T. D. Mangal S. Paterson A. Fenton |
| author_sort | T. D. Mangal |
| collection | DOAJ |
| description | The effects of snail density on Biomphalaria alexandrina parasitized with Schistosoma mansoni were investigated. Laboratory experiments were used to quantify the impact of high density on snail growth, fecundity, and survival. Density-dependent birth rates of snails were determined to inform mathematical models, which, until now, have assumed a linear relationship between density and fecundity. The experiments show that the rate of egg-laying followed a negative exponential distribution with increasing density and this was significantly affected by exposure to parasitic infection. High density also affected the weight of snails and survival to a greater degree than exposure to parasitic infection. Although snail growth rates were initially constrained by high density, they retained the potential for growth suggesting a reversible density-dependent mechanism. These experimental data can be used to parameterise models and confirm that snail populations are regulated by nonlinear density-dependent mechanisms. |
| format | Article |
| id | doaj-art-387b10f688814a35a2d8ed1a0f64dab7 |
| institution | Kabale University |
| issn | 2090-0023 2090-0031 |
| language | English |
| publishDate | 2010-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Parasitology Research |
| spelling | doaj-art-387b10f688814a35a2d8ed1a0f64dab72025-08-20T03:55:11ZengWileyJournal of Parasitology Research2090-00232090-00312010-01-01201010.1155/2010/186792186792Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoniT. D. Mangal0S. Paterson1A. Fenton2Department of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UKDepartment of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UKDepartment of Biological Sciences, University of Liverpool, Biosciences Building, Crown Street, Liverpool L69 7ZB, UKThe effects of snail density on Biomphalaria alexandrina parasitized with Schistosoma mansoni were investigated. Laboratory experiments were used to quantify the impact of high density on snail growth, fecundity, and survival. Density-dependent birth rates of snails were determined to inform mathematical models, which, until now, have assumed a linear relationship between density and fecundity. The experiments show that the rate of egg-laying followed a negative exponential distribution with increasing density and this was significantly affected by exposure to parasitic infection. High density also affected the weight of snails and survival to a greater degree than exposure to parasitic infection. Although snail growth rates were initially constrained by high density, they retained the potential for growth suggesting a reversible density-dependent mechanism. These experimental data can be used to parameterise models and confirm that snail populations are regulated by nonlinear density-dependent mechanisms.http://dx.doi.org/10.1155/2010/186792 |
| spellingShingle | T. D. Mangal S. Paterson A. Fenton Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni Journal of Parasitology Research |
| title | Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni |
| title_full | Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni |
| title_fullStr | Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni |
| title_full_unstemmed | Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni |
| title_short | Effects of Snail Density on Growth, Reproduction and Survival of Biomphalaria alexandrina Exposed to Schistosoma mansoni |
| title_sort | effects of snail density on growth reproduction and survival of biomphalaria alexandrina exposed to schistosoma mansoni |
| url | http://dx.doi.org/10.1155/2010/186792 |
| work_keys_str_mv | AT tdmangal effectsofsnaildensityongrowthreproductionandsurvivalofbiomphalariaalexandrinaexposedtoschistosomamansoni AT spaterson effectsofsnaildensityongrowthreproductionandsurvivalofbiomphalariaalexandrinaexposedtoschistosomamansoni AT afenton effectsofsnaildensityongrowthreproductionandsurvivalofbiomphalariaalexandrinaexposedtoschistosomamansoni |