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Morphometric relationships for some species of elasmobranch from tropical eastern Pacific
Author(s) -
PoloSilva C.,
Acevedo G.,
Siu S.,
Carvajal J. M.,
Ixquiac M.,
Bessudo S.,
Suarez A. M.,
Puentes V.
Publication year - 2018
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/jai.13460
Subject(s) - biology , tropical eastern pacific , ecology , fishery , zoology , pacific ocean , oceanography , geology
Summary This study proposes length relationship equations to determine total length of four species of sharks ( Carcharhinus falciformis , Mustelus lunulatus , Sphyrna lewini and Carcharhinus limbatus ) based on trunk lengths (TrL) and interdorsal lengths ( IL ) caught in Colombia and Central America Pacific Ocean. In Central American Pacific, data were recorded for C. falciformis , C. limbatus and S. lewini between 2006 and 2012. In the Colombian Pacific, data was recorded in 1994–1995 and from 2006 to 2012 for C. falciformis , S. lewini and M. lunulatus . In the Central American Pacific the IL – TL relationship was acceptable for C. falciformis ( r 2 = .69) and C. limbatus which presented a good relationship ( r 2 = .81) where most specimens were juveniles; the same trend was found for S. lewini ( r 2 = .96). The TL ‐TrL relationship estimated for species caught in the Colombian Pacific was significant for C. falciformis ( r 2 = .98) and for M. lunulatus ( r 2 = .84); however, for S. lewini this relationship was low ( r 2 = .55). Results indicate this is a useful tool for fishery statistics and fishery management for elasmobranch species of the Eastern Tropical Pacific.