%0 Journal Article
%T The use of morphometric analysis to predict the swimming efficiency of two Neotropical long-distance migratory species in fish passage
%A Assump£¿£¿o
%A Lucileine de
%A Makrakis
%A Maristela Cavicchioli
%A Makrakis
%A Sergio
%A Wagner
%A Ricardo Luiz
%A Silva
%A Patr¨ªcia Sarai da
%A Lima
%A Ariane Furtado de
%A Kashiwaqui
%A Elaine Antoniassi Luiz
%J Neotropical Ichthyology
%D 2012
%I Sociedade Brasileira de Ictiologia
%R 10.1590/S1679-62252012000400012
%X this study investigated the external body morphology (based on morphometric data) and the swimming efficiency in fish passages (based on the ascent time in a fish ladder) of two neotropical long-distance migratory species. the fish were collected in the fish ladder of the porto primavera hydroelectric power plant (known as engenheiro sergio motta), upper paran¨¢ river, brazil. the species differ in several morphometric ratios related to swimming performance. prochilodus lineatus exhibited a higher muscle ratio and caudal fin length ratio. however, leporinus elongatus showed higher values for the fineness ratio, a higher length from snout to pectoral fin base ratio, and a higher caudal peduncle depth factor. although both species show good swimming performance, the characteristics listed above may enable l. elongatus to apply greater power and propulsion, allowing it to reach a high swimming speed and to exhibit greater efficiency than p. lineatus. leporinus elongatus moves faster than p. lineatus and has a lower mean ascent time (1.39 hours) than p. lineatus (3.76 hours). prochilodus lineatus would require a somewhat longer time to pass through the fish ladder.
%K fineness ratio
%K fish swimming
%K fishway
%K morphology
%K swimming performance.
%U http://www.scielo.br/scielo.php?script=sci_abstract&pid=S1679-62252012000400012&lng=en&nrm=iso&tlng=en