Agriculture and Environment: Shrimp
Environmental Impacts of Production: Larvae and Brood Stock
Little is known about the impact of these activities.
By-catch - an important issue
However, there is some evidence that for every captured post-larva, 20-40 other living organisms are killed (Boyd and Clay 1998; World Bank et al. 2002). Post-larvae are captured near shore and are taken to land to sort. By-catch is discarded on the land, where it dies.
For an industry that depends on more than a trillion post-larvae annually, this could be a significant issue. However, little is known about recruitment of the different species in the surf areas where post-larvae are harvested.
Because brood stock must be taken live from the ocean (and are caught at night), much more care is taken and by-catch is not seen as a serious issue.