Aquaponics Projects For Beginners
Many protostomes are consumed by humans, and as such they support major fisheries and traditional livelihoods. In 2001 protostomes such as shrimp, clams, squids, and lobsters represented over 26 of all marine fishery harvests. In addition, more than 13 million tons of these species were produced in aquaculture operations. Both wild harvests and captive production provide livelihoods for many humans, and these fisheries are often deeply rooted in the culture of coastal areas. For example, Cajun communities in the bayous of the Mississippi River may include generations of shrimpers, while the coast of Maine is dotted with communities that are culturally centered around the lobster fishery.
The genus Artemia is of considerable economic importance. The cysts of this species are harvested, cleaned, dried, packed and sold as fish food in the aquarium business. The cysts are also used in industrial aquaculture to feed fish larvae. The Libyan Fezzan desert contains several spring-fed dune lakes that have turned saline with time. Small communities living around these lakes use Artemia as their main source of animal protein. The women collect and dry the shrimp. These communities are called dawada (worm eaters) by the surrounding Arab tribes.
Migrates downstream to shallow mudflats in estuaries during the wet season. Spawning occurs between September and March in Australia, with peaks in November to December and again in February to March. Females are larger than males, are highly fecund, and may be courted by one or more males at the same time. Eggs are pelagic, hatch within 24 hours, and the larvae grow quickly as they move into mangrove areas, mudflats, and floodplain lagoons. Juveniles move into coastal waters after one year, then migrate upstream where adults reside for three to four years. Populations landlocked by dams migrate to the dam face, but do not spawn. Raised extensively by aquaculture as food or for game fish-stocking programs.
AusVet Animal Health Services (http www.ausvet.com.au ). A private epidemiology consulting company that specializes in (but is not limited to) animal disease within populations. The company has extensive experience in disease control and eradication programs, animal health in developing countries, and aquaculture. The site contains a comprehensive useful links page covering animal health, epidemiology, and statistics.
The creation of protected lagoons for resorts or aquaculture and associated eutrophication (nutrient pollution) of those areas have resulted in increased medusa populations in the Florida Keys and Mexico. The medusae are harmless to humans but can be irritating if they are handled.
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