Alternative reproductive adaptations predict asymmetric responses to climate change in lizards
Anthropogenic climate change ranks among the major global-scale threats to modern biodiversity. Extinction risks are known to increase via the interactions between rapid climatic alterations and environmentally-sensitive species traits that fail to adapt to those changes. Accumulating evidence reveals the influence of ecophysiological, ecological and phenological factors as drivers underlying demographic collapses that lead to population extinctions. However, the extent to which life-history traits influence population responses to climate change remains largely unexplored. The emerging 'cul-de-sac hypothesis' predicts that reptilian viviparity ('live-bearing' reproduction), a 'key innovation' facilitating historical invasions of cold climates, increases extinction risks under progressively warming climates compared to oviparous reproduction – as warming advances polewards/mountainwards, historically cold-climates shrink, leading viviparous species to face demographic collapses. Leer más.
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- Publicado: 17 Agosto 2019
Psammophis afroccidentalis • On the Psammophis sibilans group (Serpentes, Lamprophiidae, Psammophiinae) North of 12°S, with the Description of A New Species from West Africa
Based on molecular, morphological and field data, the status and zoogeography of the taxa of the Psammophis sibilans group north of 12°S are reviewed. Molecular data including sequences from 20 of the 22 described species known to occur north of 12°S suggest that P. sibilans distribution is restricted to northeastern Africa, from Egypt to Ethiopia. Populations from West Africa are described as a new species, Psammophis afroccidentalis sp. nov., and those from Chad, Cameroon and Central African Republic are assigned to P. rukwae which is also distributed from Tanzania to Ethiopia. Leer más.
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- Publicado: 17 Agosto 2019
Manual en castellano sobre control de enfermedades infecciosas en anfibios.
El amplio manual sobre enfermedades infecciosas en anfibios, su lectura y práctica puede aportar en la reducción de la quitiridiomicosis, enfermedad por hongos que está afectando de forma prácticamente mundial a muchos de los anfibios y que desgraciadamente está ligada, en su difusión, a factores humanos. Leer más.
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- Publicado: 17 Agosto 2019
Pequeñas acciones
Durante este mes de agosto, miembros de la Asociación Herpetológica Granadina hemos estado revisando algunos puntos de agua en el Parque Natural de la Sierra de Baza. Esta sierra cuenta con cinco especies de anfibios, entre las que destaca el sapo partero bético (Alytes dickhilleni). Aunque ocupa cauces naturales (su hábitat originario), el sapo partero bético cría en esta sierra sobre todo en estructuras artificiales, como albercas y abrevaderos. Leer más.
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- Publicado: 17 Agosto 2019
Sampling, analysis and interpretation of eDNA data workshop: Sept 19th
When: Thursday 19 September 2019. Where: School of Anthropology and Conservation, Marlowe Building, University of Kent, Canterbury CT2 7NR. Leer más.
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- Publicado: 17 Agosto 2019
Climate change responsible for severe infectious disease in UK frogs May 10th, 2019|Latest News, Partner Updates
Climate change has already increased the spread and severity of a fatal disease caused by Ranavirus that infects common frogs (Rana temporaria) in the UK, according to research led by ZSL's Institute of Zoology, UCL and Queen Mary University of London published today in Global Change Biology (10 May 2019). Historic trends in mass-mortality events attributed to the disease were found to match the pattern of increased temperatures recorded over recent decades, with disease outbreaks predicted to become more severe, more widespread and occurring over a greater proportion of the year within the next few decades, if carbon emissions continue at their current rate. Leer más.
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- Publicado: 17 Agosto 2019