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Biometric aspect of Hemirhamphus brasiliensis (Pisces: Hemirhamphidae) Cubagua island, Venezuela

Abstract:

We examined a total of 504 specimens of Hemirhamphus brasiliensis, which were collected monthly from march 2002 to march 2003 around the island of Cubagua. In these organisms were evaluated size composition, morphometric and relative growth, length-weight relationship and relative condition factor. The organisms studied were adults, mostly consisting of 333 females (66.08%), 99 males (19.64%) and 72 indeterminate organisms (14.2%). The average standard length for females was 281.88 mm with variation between 216 and 330 mm for males ranged between 217 and 330 mm with an average of 277.91 mm, while for juveniles or undetermined sex ranged from 206 to 320 mm with an average of 247.82 mm, being the most common sizes of 257 and consist of 313 mm of Lst. The relationship between standard length and morphometric studies indicate that different parts of the body have minorante allometric growth. No significant differences were found for the slopes between females, males and indeterminate. The analysis of length-weight relationship showed a highly significant positive relationship between both variables, a growth minorant alometric. Mean Kn values were equal or close to 1, reflecting the good physiological condition of fish in the study area.