Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/36360
Title: Time and space: genetic structure of the common sea urchin paracentrotus lividus in the south-eastern iberian coast
Author: Calderón, I.
Brusciotti, S.
Pita, L.
Palacín Cabañas, Cruz
Turon Barrera, Xavier
Keywords: Invertebrats marins
Eriçons de mar
Biologia de poblacions
Mediterrània (Espanya : Costa)
Marine invertebrates
Sea urchins
Population biology
Mediterranean Coast (Spain)
Issue Date: 2012
Publisher: Springer Verlag
Abstract: Spatio-temporal variability in settlement and recruitment, high mortality during the first life-history stages, and selection may determine the genetic structure of cohorts of long-lived marine invertebrates at small scales. We conducted a spatial and temporal analysis of the common Mediterranean Sea urchin Paracentrotus lividus to determine the genetic structure of cohorts at different scales. In Tossa de Mar (NW Mediterranean), recruitment was followed over 5 consecutive springs (2006-2010). In spring 2008, recruits and two-year-old individuals were collected at 6 locations along East and South Iberian coasts separated from 200 to over 1,100 km. All cohorts presented a high genetic diversity based on a fragment of mtCOI. Our results showed a marked genetic homogeneity in the temporal monitoring and a low degree of spatial structure in 2006. In 2008, coupled with an abnormality in the usual circulation patterns in the area, the genetic structure of the southern populations studied changed markedly, with arrival of many private haplotypes. This fact highlights the importance of point events in renewing the genetic makeup of populations, which can only be detected through analysis of the cohort structure coupling temporal and spatial perspectives.
Note: Versió postprint del document publicat a: http://dx.doi.org/10.1007/s00227-011-1799-z
It is part of: Marine Biology, 2012, vol. 159, num. 1, p. 187-197
Related resource: http://dx.doi.org/10.1007/s00227-011-1799-z
URI: http://hdl.handle.net/2445/36360
ISSN: 0025-3162
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

Files in This Item:
File Description SizeFormat 
581459.pdf388.54 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.