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dc.contributor.authorOrtiz-Santaliestra, Manuel E.-
dc.contributor.authorMarco, Adolfo-
dc.contributor.authorFernández, M. José-
dc.contributor.authorLizana, Miguel-
dc.date.accessioned2012-03-29T10:40:53Z-
dc.date.available2012-03-29T10:40:53Z-
dc.date.issued2007-
dc.identifier.citationAquatic Toxicology 85 (2007) 251–257es_ES
dc.identifier.urihttp://hdl.handle.net/10261/47673-
dc.description.abstractEmbryonic mortality in many aquatic animals, including most amphibian species, is usually very high. In addition to mechanical and chem- ical defences, some species have developed behavioural patterns that can increase egg survival. For example, females of some newt species protect their eggs by wrapping them in leaves of aquatic plants. We have studied the effects of ammonium nitrate (nominal concentration of 90.3 mg N–NO3 NH4 /L) and water acidification (pH 4–5) on egg wrapping behaviour of the dwarf newt, Triturus pygmaeus, and on whether this specific behaviour may protect embryos from contamination. Although either ammonium nitrate or low pH did not inhibit oviposition, the mean percentage of eggs that were wrapped by the females was significantly lower at low pH than in controls. In order to assess the potential effects of oviposition behaviour on embryonic survival, we exposed simultaneously wrapped and unwrapped eggs to ammonium nitrate and acid pH during their development. After 25 days of exposure, ammonium nitrate reduced length and developmental stage at eclosion of the exposed individuals, regardless of whether they were wrapped or unwrapped. The fertilizer caused a significantly higher mortality in unwrapped than wrapped eggs. The potential impact of water pollution on amphibians in the field may include not only direct effects on embryonic and larval survival but also alteration of breeding behaviours, which may reduce reproductive success and ultimately affect population’s condition.es_ES
dc.language.isoenges_ES
dc.publisherElsevieres_ES
dc.rightsopenAccesses_ES
dc.subjectAmphibian declineses_ES
dc.subjectBehavioural toxicologyes_ES
dc.subjectEmbryonic survivales_ES
dc.subjectParental careses_ES
dc.titleEffects of ammonium nitrate exposure and water acidification on the dwarf newt: The protective effect of oviposition behaviour on embryonic survivales_ES
dc.typeartículoes_ES
dc.identifier.doi10.1016/j.aquatox.2007.09.008-
dc.description.peerreviewedPeer reviewedes_ES
dc.relation.publisherversionhttp://dx.doi.org/10.1016/j.aquatox.2007.09.008es_ES
dc.type.coarhttp://purl.org/coar/resource_type/c_6501es_ES
item.openairetypeartículo-
item.cerifentitytypePublications-
item.languageiso639-1en-
item.grantfulltextopen-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.fulltextWith Fulltext-
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