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dc.contributor.authorRuiz-Campos, Gorgonio
dc.contributor.authorLozano-Vilano, Marı´a de Lourdes
dc.contributor.authorGarcı´a-Ramı´rez, Marı´a E.
dc.date.accessioned2020-09-03T11:19:25Z
dc.date.available2020-09-03T11:19:25Z
dc.identifier.urihttps://scholar.oxy.edu/handle/20.500.12711/9719
dc.description.abstractA morphometric comparison was performed on specimens of blue catfish (Ictalurus furcatus) from northern (Lower Rı´o Bravo) and southern (Chiapas) Me´xico in order to identify diagnostic characters that allow their discrimination. The discriminant function analysis determined three characters to be highly diagnostic to separate the two groups of specimens: the southern group [SG] has a shorter anal base (mean 5 3.4 times in standard length [SL], range 5 3.1 to 3.7) vs northern group [NG] (mean 5 2.9 times in SL, range 5 2.7 to 3.1), a lesser head width (mean 5 6.0 times in SL, range 5.1 to 6.8) vs NG (mean 5 5.6 times, range 5 5.3 to 6.0), and a lower number of anal rays (mean 5 26, range 5 24 to 28) vs NG (mean 5 31, range 5 29 to 34). Additionally, 14 other characters were also different (P , 0.01) between both groups. All these characters support the taxonomic validation of Ictalurus meridionalis (Gu¨ nther 1864) for the individuals of SG that are currently included in I. furcatus Lesueur. Studies on comparative osteology and molecular genetics of both forms are needed for the clarification of their taxonomic status.
dc.subjectIctalurus furcatus
dc.subjectMorphometric
dc.titleMorphometric Comparison of Blue Catfish Ictalurus furcatus (Lesueur, 1840) from Northern and Southern Atlantic Drainages of Me´xico
dc.title.alternativeMorphometric Comparison of Blue Catfish Ictalurus furcatus
dc.typearticle
dc.abstract.formatonep
dc.source.issuescas/vol108/iss1
dc.source.issue1
dc.identifier.legacyhttps://scholar.oxy.edu/scas/vol108/iss1/4
dc.source.peer_reviewedTRUE
dc.source.statuspublished
dc.source.journaltitleScas: Bulletin of the Southern California Academy of Sciences


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