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Changes in life history traits in relation to climate change: bluefish (Pomatomus saltatrix) in the northwestern Mediterranean

AuthorsSabatés, Ana ; Martín, Paloma ; Raya, Vanesa
Issue Date29-Nov-2013
CitationIntegrating New Advances in Mediterranean Oceanography and Marine Biology. Meeting program: 69 (2013)
AbstractThis study shows the strong relationship between the increasing surface temperature in the NW Mediterranean and the expansion northwards of the bluefish distribution range with the species reproducing in the new distribution areas. Two shifts in temperature were detected: the first one in the early 1980s and the second around 1997. This last shift, explained by warmer springs (April to June), when the species migrates for spawning, led to the observed changes in bluefish. In the western Mediterranean basin, a significant increase in bluefish landings was detected by the mid nineties while in the Catalan coast, northern edge of the species distribution, a northward expansion was observed from 2000. At present, spawning takes place all along the Catalan Coast (June to September), including the new distribution areas, being 21ºC the threshold for the presence of larvae in the plankton. These changes are related to the increase in temperature during the spring months, as these temperatures are crucial for migration and reproduction events. The warmer spring months would also account for the earlier onset of spawning. The evidence presented in this study highlights how P. saltatrix is able to take advantage of the changing environmental conditions and become established in new areas
DescriptionSymposium on Integrating New Advances in Mediterranean Oceanography and Marine Biology, 26-29 November 2013, Institut de Ciències del Mar (CSIC), Barcelona, Catalunya, Spain
Publisher version (URL)http://www.icm.csic.es/bio/medocean/information.htm#schedule
Appears in Collections:(ICM) Comunicaciones congresos
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