Please use this identifier to cite or link to this item:
http://hdl.handle.net/20.500.11889/2687
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Swaileh, Khalid | |
dc.contributor.author | Ezzughayyar, Ademar | |
dc.date.accessioned | 2016-10-15T08:53:31Z | |
dc.date.available | 2016-10-15T08:53:31Z | |
dc.date.issued | 2001 | |
dc.identifier.uri | http://hdl.handle.net/20.500.11889/2687 | |
dc.description | ezzughayyah,a.: | en_US |
dc.description.abstract | Dose-dependent e4ects of dietary lead and zinc on feeding and growth rates of adult Helix engaddensis snails were studied over a 1-month period followed by a 2-week recovery period. Snails were fed on an arti5cial diet containing the following lead or zinc concentrations: 0, 20, 100, 500, 2500, and 12,500 lg/g dry food. At the end of the 6 weeks, mortality rate among snails fed on Pb-contaminated diet was 18.3% (11/60) and the respective value for Zn-contaminated diet was 50% (30/60). Both metals signi5cantly reduced growth and feeding rates. Snails were found to be sensitive to zinc but tolerant to lead. During the recovery period, snails fed on Zn-contaminated diet failed completely to feed or grow normally, whereas snails fed on Pb-contaminated diet showed signs of slow improvement in terms of feeding and growth rates. The NOEC and LOEC for lead were 100 and 500 lg ' g 21 , respectively, while the respective concentrations for zinc were 20 and 100 lg ' g 21 | |
dc.language.iso | en | en_US |
dc.publisher | Elsevier | en_US |
dc.subject.lcsh | Helix engaddensis | |
dc.subject.lcsh | Landsnails | |
dc.subject.lcsh | Soil ecology | |
dc.subject.lcsh | Soil pollution | |
dc.subject.lcsh | Toxicity | |
dc.title | Dose-dependent effects of dietary Pb and Zn on feeding and growth rates of the Landsnail Helix engaddensis | en_US |
newfileds.item-access-type | open_access | en_US |
newfileds.general-subject | Ecology | en_US |
item.languageiso639-1 | other | - |
item.fulltext | With Fulltext | - |
item.grantfulltext | open | - |
Appears in Collections: | Fulltext Publications |
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