English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/142289
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Unexpected consequences of a drier world: evidence that delay in late summer rains biases the population sex ratio of an insect

AuthorsBonal, Raúl ; Hernández, Marisa; Espelta, Josep Maria; Muñoz, Alberto ; Aparicio, José Miguel
KeywordsClimate change
Sex ratio
Drought
Insects
Issue Date2015
PublisherRoyal Society (Great Britain)
CitationRoyal Society Open Science 2: 150198 (2015)
AbstractThe complexity of animal life histories makes it difficult to predict the consequences of climate change on their populations. In this paper, we show, for the first time, that longer summer drought episodes, such as those predicted for the dry Mediterranean region under climate change, may bias insect population sex ratio. Many Mediterranean organisms, like the weevil Curculio elephas, become active again after summer drought. This insect depends on late summer rainfall to soften the soil and allow adult emergence from their underground refuges. We found that, as in many protandric species, more C. elephas females emerged later in the season. Male emergence timing was on average earlier and also more dependent on the beginning of late summer rainfall. When these rains were delayed, the observed weevil sex ratio was biased towards females. So far, the effects of global warming on animal sex ratios has been reported for temperature-dependent sex determination in reptiles. Our results show that rainfall timing can also bias the sex ratio in an insect, and highlight the need for keeping a phenological perspective to predict the consequences of climate change. We must consider not just the magnitude of the predicted changes in temperature and rainfall but also the effects of their timing.
Publisher version (URL)https://doi.org/10.1098/rsos.150198
URIhttp://hdl.handle.net/10261/142289
DOI10.1098/rsos.150198
Identifiersdoi: 10.1098/rsos.150198
e-issn: 2054-5703
Appears in Collections:(IREC) Artículos
Files in This Item:
File Description SizeFormat 
sexratioinsect.pdf615,68 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.