Life-history, substrate choice and Cytochrome Oxidase I variations in sandy beach peracaridans along the Rio de la Plata estuary

Fanini, Lucia; Zampicinini, Gianpaolo; Tsigenopoulos, Costas S.; Barboza, Francisco R.; Lozoya, Juan Pablo; Gómez, Julio; Celentano, Eleonora; Lercari, Diego; Marchetti, Giovanni M.; Defeo, Omar

doi:10.1016/j.ecss.2017.01.007

Cited by 11 publications

(1 citation statement)

References 45 publications

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“…Similar to that observed in E. hirsuticauda , an increase in the number of populations was detected in O. tuberculata at T2, with the differentiated populations located within the southern non-impacted area. Although there are only a few of studies available linking ecology and genetics in sandy beach organisms exposed to disturbances, our results are on the line of previous results with talitrids 48–50 . Ecological studies have found a similar trend, with the species E. hirsuticauda and O. tuberculata showing similar abundances before and after the 27F earthquake 4 .…”

Section: Discussionsupporting

confidence: 92%

Post-Disturbance Genetic Changes: The Impact of the 2010 Mega-Earthquake and Tsunami on Chilean Sandy Beach Fauna

Brante

Guzmán-Rendón

Barría

et al. 2019

Sci Rep

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Earthquake/tsunamis can have profound impacts on species and their genetic patterns. It is expected that the magnitude of this impact might depend on the species and the time since the disturbance occurs, nevertheless these assumptions remain mostly unexplored. Here we studied the genetic responses of the crustacean species Emerita analoga, Excirolana hirsuticauda, and Orchestoidea tuberculata to the 27F mega-earthquake/tsunami that occurred in Chile in February 2010. mtDNA sequence analyses revealed a lower haplotype diversity for E. analoga and E. hirsuticauda in impacted areas one month after the 27F, and the opposite for O. tuberculata. Three years after the 27F we observed a recovery in the genetic diversity of E. analoga and E. hirsuticauda and decrease in the genetic diversity in O. tuberculata in 2/3 of sampled areas. Emerita analoga displayed decrease of genetic differentiation and increase in gene flow explained by long-range population expansion. The other two species revealed slight increase in the number of genetic groups, little change in gene flow and no signal of population expansion associated to adult survival, rapid colonization, and capacity to burrow in the sand. Our results reveal that species response to a same disturbance event could be extremely diverse and depending on life-history traits and the magnitude of the effect.

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Section: Discussionsupporting

confidence: 92%