Canary Islands La Gomera taking 1000 captives to be sold as slaves. Another noteworthy attack occurred in 1797, when Santa Cruz de Tenerife was attacked by a British fleet under Horatio Nelson on 25 July. The British were repulsed, losing almost 400 men. It was during this battle that Nelson lost his right arm. The sugar-based economy of the islands faced stiff competition from Spain's American colonies. Low prices in the sugar market in the 19th century caused severe recessions on the islands. A new cash crop, cochineal ("cochinilla"), came into cultivation during this time, saving the islands' economy. During this time
La Gomera the subsequent immigration, genetic footprints of the first settlers of the Canary Islands persist in the current inhabitants. Parallelling mtDNA findings (50.1% of U6 and 10.83% of L haplogroups), the largest average Northwest African contribution (42.50%) was found for the samples from La Gomera. According to Flores et al. (2003), genetic drift could be responsible for the contrasting difference in Northwest African ancestry detected with maternal (51% of Northwest African lineages) and paternal markers (0.3–10% of Northwest African lineages) in La Gomera. Alternatively, it could reflect the dramatic way the island was conquered, producing the strongest sexual asymmetry in the