Yuan J, Zhang X, Liu C, Wei J, Li F, Xiang J. Horizontally transferred genes in the genome of Pacific white shrimp, Litopenaeus vannamei. BMC Evol Biol. 2013;13:165 pubmed publisher
..This is the first time to report the existence of horizontally transferred genes in shrimp. Importantly, most of these genes are exposed to a negative selection pressure and appeared to be functional. ..