a snapshot of the population structure of branchiostoma lanceolatum in the racou beach, france, during its spawning season人口结构的快照的文昌鱼lanceolatum racou海滩,法国,在产卵季节.pdfVIP

A Snapshot of the Population Structure of Branchiostoma lanceolatum in the Racou Beach, France, during Its Spawning Season Yves Desdevises., Vincent Maillet., Michael Fuentes, Hector Escriva* ´ CNRS UMR 7232, UPMC Univ Paris 06, Observatoire Oceanologique, Banyuls-sur-Mer, France Abstract A methodology for inducing spawning in captivity of the lancelet Branchiostoma lanceolatum has been developed recently with animals collected at the Racou beach, in the southern coast of France. An increasing amount of laboratories around the world are now working on the evolution of developmental mechanisms (Evo-Devo) using amphioxus collected in this site. Thus, today, the development of new aquaculture techniques for keeping amphioxus in captivity is needed and the study of the natural conditions at which amphioxus is exposed in the Racou beach during their spawning season becomes necessary. We have investigated the amphioxus distribution, size frequency, and population structure in the Racou beach during its natural spawning season using multivariate methods (redundancy analysis and multiple regression). We found a clear preference of amphioxus for sandy sites, something that seems to be a general behaviour of different amphioxus species around the world. We have also estimated the amphioxus growth rate and we show how the animals are preferentially localized in shallow waters during April and June. Citation: Desdevises Y, Maillet V, Fuentes M, Escriva H (2011) A Snapshot of the Population Structure of Branchiostoma lanceolatum in the Racou Beach, France, during Its Spawning Season. PLoS ONE 6(4): e18520. doi:10.1371/journal.pone.0018520 Editor: Johannes Jaeger, Centre for Genomic Regulation (CRG), Universitat Pompeu Fabra, Spain Recei