Haematological and biochemical characteristics of male jundia (Rhamdia quelen Quoy & Gaimard Pimelodidae): changes after acute stress

摘要

The jundia (R quelen) is an endemic fish species in South America that can withstand cold winters and grows fast in the summer. In aquaculture systems, at a density of two to four fish per m~2 it will reach 600-800 g body weight in 8 months Jundia is a suitable species for fish production in the southern part of South America making it ideal for any region with a temperate or subtropical climate (Barcellos, Wasser-mann Scott, Woehl Ouevedo. Ittzes Krieger & Lulhier 2001a). According to Wendelaar Bonga (1997), several practices of commercial a qua culture, including harvest procedure induce a characteristic stress response.