Posts Tagged ‘Argentine Rainbow Trout

16
Oct
09

See the brown trout run (Patagonia & Tierra del Fuego)

“The Rio Grande and other rivers in the Patagonia and Tierra del Fuego (P-TdF) regions of South America provide some of the best sport fly fishing in the world. While salmonids are not native to South American rivers, they are now well established and fly fishing ecotourism is an important regional industry. However, concerns exist that the fishing pressure may have begun to impair trout population structure and productivity in some of the rivers.”

“We also are interested in documenting why brown trout and sea-run salmonid fishes have so successfully adapted in the Rio Grande. Specifically, we are interested in potential interactions between resident and sea-run life history types of brown and other salmonids that are present in the Rio Grande (e.g. Rainbow Trout), especially in relation to interbreeding and competition for food and space by juveniles. We believe that such information also is essential to sustaining high quality fishing in P-TdF, as well as better informing the science of salmon rivers worldwide.

FISH ART

30
Jan
09

Argentina’s Rainbow Trout (interesting origins)

Rainbow Trout~Argentine

Rainbow Trout~Argentine

DNA data confirms Argentina’s Rainbow trout were from the McCloud R. of California and Southern Oregon. Also, France, Germany and Denmark introduced Rainbow stock into the rivers of Argentina. This has stocking history and some techno data that probably only a fisheries biologist would grasp, but still intersting on the reaches and intertwining of fish DNA.

From 1904 to 1910, several consignments of rainbow trout embryos arrived at Argentina, mainly from the United States, with only occasional importations from European countries, such as France and Germany…..By that time, Bariloche became the main center of salmonid propagation in Argentinean waters, contributing to the distribution of these new stocks throughout the 1950s, 1960s, and 1970s. Danish stocks of rainbow trout have a complex ancestry; multiple lineages from California, Michigan, Canada, New Zealand, and France appear to have contributed to their foundation…

http://www.gesa.com.ar/pdf/RivaRossi_Lessa_et_al_04.pdf




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