CATHOROPS MELANOPUS PDF

CATHOROPS MELANOPUS PDF

Familia: Ariidae Genus: Cathorops Species: Cathorops melanopus. Name[edit]. Cathorops melanopus (Günther, ). Cat-eLog Data Sheet. Scientific Name, Cathorops melanopus (Günther, ). Common Name, Dark Sea Catfish. Type Locality, Río Motagua. Kingdom: Animalia. Taxonomic Rank: Species. Synonym(s). Common Name(s): dark sea catfish [English]. bagre prieto [Spanish]. Taxonomic Status.

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Revision of the species of the genus Cathorops Siluriformes: Ariidae from Mesoamerica and the Central American Caribbean, with description of three new species.

Marceniuk I ; Ricardo Betancur-R. The ariid genus Cathorops includes species that occur mainly in estuarine and freshwater habitats of cathoropx eastern and western coasts of southern Mexico, Central and South America. The species of Cathorops from the Mesoamerica Atlantic slope and Caribbean Central America are revised, and three new species are described: Adicionalmente, se redescrevem C.

The species belonging to Cathorops have been traditionally distinguished by the absence of vomerine tooth plates and presence of cathoops pair cathoropd small oval accessory tooth plates bearing molariform teeth. Monophyly of the genus was first recognized by Marceniuk and later confirmed through cladistic analyses by Marceniukusing osteological characters and Betancur-R.

Precathoropsfor C. In this study, we provide a revision of the species of Cathorops from the Atlantic slope of Mesoamerica and the Central American Caribbean, including the description of three new species and the redescription of C. This study is based on the ctahorops of 50 morphometric and 6 meristic characters. Measurements were taken cathoros to Marceniuk b. The dorsomedian groove of neurocranium referred herein is formed by mesial depression of the frontals and extends posteriorly to the anterior portion of supraoccipital.

Bivariate scatterplots were used in the analyses of morphometric data and ranges and modal data used in the analysis of meristic data. Measurements are given as percentages of standard length SLunless stated otherwise.

Dark sea catfish

Individual measurements are given for the holotypes except of C. The meristic values for the holotypes are indicated in parentheses in the descriptions. Sex of specimens was determined by examination of the gonad morphology under magnification gonads of C. Whenever possible, variables in which differences were found between males and females are discussed under cafhorops sexual dimorphism section of each species.

Diagnosis sections include a combination of characters which allows differentiating each species described from the other members of Cathorops. Individual comparative diagnoses separating each species from other species from Mesoamerica and the Caribbean, including Cathorops mapale species group from Colombia and Venezuela, are also presented. Usage of “nuchal plate” in text refers to the fusion of the anterior and the medial nuchal plates Higuchi, ; Royero, The institutional abbreviations used are as follows: Cathorops Cathorops aguadulce Meek, Galeichthys aguadulce Czthorops, FMNH1, Cathorops aguadulce is distinguished from all congeners by the fleshy papillae intercalated with gill rakers on first two gill arches vs.

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Cathorops aguadulce is further distinguished from C. Cathorops cathorps is additionally distinguished from C. Cathorops aguadulce also differs from C. Tables 1 and 2. Head long and depressed, profile slightly convex at level of frontals and supraoccipital. Body broader rather than deeper on pectoral girdle area. Cephalic shield rugose, relatively short and narrow on meoanopus ethmoid, frontal, supracleithrum, and epioccipital areas.

Osseous bridge formed by lateral ethmoid and frontal long and slender, evident under skin. Dorsomedian groove of neurocranium formed by frontals and supraoccipital, relatively deep and long, its margins well marked and progressively narrower posteriorly. Supraoccipital process relatively long and narrow on posterior portion, profile straight. Nuchal plate meoanopus, short and relatively wide.

Snout long, rounded on transverse section. Anterior and posterior nostrils close to one another. Eye lateral and large. Interorbital distance short, distance between nostrils and orbit long.

Maxillary barbel surpassing base of pectoral-fin spine, external mental barbel surpassing margin of gill membrane, internal mental barbel reaching margin of gill membrane. acthorops

Cathorops melanopus – Wikispecies

Mouth narrows, lower jaw arched. Lips thick, lower lip thicker than upper lip. Vomerine tooth plates absent. One pair of elongated and narrow accessory tooth plates, small and distant from each other. Accessory kelanopus plates with small and few melanpus teeth. Premaxilla fathorops narrow and moderately long. Soft pectoral-fin rays Pectoral-fin spine thick and short; anterior margin without granules or serrations; posterior margin with long and conspicuous serrations along almost its entire length.

Soft dorsal-fin rays 7. Dorsal-fin spine relatively short, longer than pectoral-fin spine; anterior margin smooth; posterior margin serrated along almost its entire length. Pelvic fin high, with 6 rays. Anal fin high and short at base, with 21 rays. Upper and lower lobes of caudal fin long, upper lobe longer than lower lobe.

Acicular gill rakers on first arch 144 or 5 5 on upper limb, 10 or 11 10 on lower limb. Spike-shaped gill rakers on second arch 133 to 5 3 on upper limb, 10 or 11 10 on lower limb. Mesial surfaces of all gill arches with developed gill rakers. Lateral and mesial surfaces of first and second gill arches with fleshy papillae intercalated with gill rakers, papillae more developed on second arch.

Dorsal and lateral portions of head brown, ventrally light beige. Body with same brown color, progressively lighter towards lateral line and rather light beige under lateral line. Maxillary barbel dark, mental barbels light; adipose fin dark, and other fins brown. Sex of specimens was not examined see Material and Methods.

Cathorops melanopus – Wikidata

The species inhabits large to medium-sized rivers, lagoons and small drainages; typically freshwaters, but also occurring in marine waters Miller et al.

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Aguadulce Sea Catfish or bagre aguadulce. Cathorops aguadulce and C.

More material examination is required to determine mrlanopus the populations reported by Miller et al. Cathorops Cathorops belizensisnew species. USNM9 8, Cathorops mrlanopus is distinguished from all congeners by having gill rakers on first arch vs. Cathorops belizensis is additionally distinguished from C. Cathorops belizensis is further distinguished from C. Cathorops belizensis also differs from C.

Cathorops belizensis may be further distinguished from C. Tables 1 and 3. Head very long and depressed, profile slightly convex at level of frontals and supraoccipital.

Body wider rather than deeper on pectoral girdle area. Cephalic shield long and rugose, wide on lateral ethmoid, frontal, supracleithrum, and epioccipital areas.

Osseous bridge formed by lateral ethmoid and frontal long and slender, quite evident under skin. Dorsomedian groove of neurocranium formed by frontals and supraoccipital cathoropps and relatively large, its margins well marked and progressively narrower posteriorly.

Supraoccipital process relatively short and wide on posterior portion, profile straight. Nuchal plate crescent-shaped, short and wide.

Snout long and rounded on transverse section. Anterior and posterior nostrils quite distant from one another. Eyes lateral and small.

Interorbital distance long, distance between nostrils and orbit moderate. Maxillary barbel reaching base of pectoral-fin spine, external mental barbel reaching margin of gill membrane, internal mental barbel not reaching margin of gill membrane. Mouth broad, lower jaw arched. Lips wide, lower lip thicker than upper lip. One pair of oval shaped accessory tooth plates, moderate in size and distant from one another. Accessory tooth plates with large molariform teeth. Premaxilla broad and short. Dentary with well pronounced posterior projection, with sharp teeth on melanlpus portion, molariform teeth on posterior portion and few conical teeth on intermediate portion.

Pectoral-fin spine relatively short and slender; anterior margin with few granules on basal two thirds, distal third with short serrations; posterior margin straight on basal fourth, distal three quarters with short serrations.

Dorsal-fin spine short and slender, as long as pectoral-fin spine; anterior margin with few granules on basal two thirds, distal third with short serrations; posterior margin serrated along almost its entire length. Anal fin low and short at base, with 21 rays. Upper and lower lobes of caudal-fin quite short, upper lobe longer than lower lobe.

Acicular gill rakers melwnopus first arch 206 or 7 6 on upper limb, 12 to 14 14 on lower limb.

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