Document Detail


Food availability determines the response to pond desiccation in anuran tadpoles.
MedLine Citation:
PMID:  23344427     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Food availability and pond desiccation are two of the most studied factors that condition amphibian metamorphosis. It is well known that, when food is abundant, organisms undergo metamorphosis early and when they are relatively large. The capability of anurans to accelerate their developmental rate in response to desiccation is also common knowledge. These two variables must act together in nature, since we know that, as a pond dries, the per capita resources decrease. We conduct an experiment to evaluate the effects of desiccation and food availability separately and in combination in tadpoles of the painted frog (Discoglossus pictus). We demonstrate that food deprivation leads to slow growth rates, which delay metamorphosis and produce smaller size and weight. The capability to accelerate metamorphosis when facing a drying pond is also confirmed, but, nevertheless, with factor interaction (when the pool is drying and resources are scarce) the capacity to respond to desiccation is lost. In addition, slow drying rates are shown to be stressful situations, but not enough to provoke a shortening of the larval period; in fact, the larval period becomes longer. We also demonstrate that the interaction of these factors changes the allometric relationship of different parts of the hind limb, which has implications for the biomechanics of jumping. Due to low mortality rates and an adequate response to both environmental factors, we expect D. pictus to have a great invasive potential in its new Mediterranean distribution area, where lots of temporary and ephemeral ponds are present.
Authors:
Urtzi Enriquez-Urzelai; Olatz San Sebastián; Núria Garriga; Gustavo A Llorente
Related Documents :
9314217 - Dose contribution from metabolized organically bound tritium after acute tritiated wate...
15898477 - A systematic evaluation of food textures to decrease packing and increase oral intake i...
15051857 - Dietary proteins in the regulation of food intake and body weight in humans.
17845247 - Oestradiol, but not genistein, inhibits the rise in food intake following gonadectomy i...
19200107 - Antimicrobial efficacy of zinc oxide quantum dots against listeria monocytogenes, salmo...
8946127 - Food-associated gastrointestinal disease.
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-1-24
Journal Detail:
Title:  Oecologia     Volume:  -     ISSN:  1432-1939     ISO Abbreviation:  Oecologia     Publication Date:  2013 Jan 
Date Detail:
Created Date:  2013-1-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0150372     Medline TA:  Oecologia     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Departament de Biologia Animal, Facultat de Biologia, Universitat de Barcelona, Av. Diagonal, 643, 08028, Barcelona, Spain, urtzi.enriquez@gmail.com.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Radiocesium fallout in the grasslands on Sakhalin, Kunashir and Shikotan Islands due to Fukushima ac...
Next Document:  Synthetic cascades are enabled by combining biocatalysts with artificial metalloenzymes.