Datos morfológicos de Orbiraja jensenae
Claves de identificación
Referencia principal Last, P.R., S. Weigmann and D. Dumale, 2016
El aspecto se refiere a
Bones in OsteoBase

Atributos sexuales

órganos especializados
diverso aspecto
diversos colores
Observaciones

Características descriptivas del juvenil y del adulto

Características llamativas
Forma lateral del cuerpo other
Sección transversal flattened
Perfil dorsal de la cabeza
Tipo de ojos
Tipo de boca/hocico
Posición de la boca
Diagnosis

This small to medium-sized rostrorajin skate (to about 53 cm TL) is distinguished by the following combination of characters: disc possess narrowly to broadly rounded apices, its width 59-71% TL, 1.1-1.2 times its length; snout angle is 88-98°; tail relatively short in females (length 0.8-0.9 in distance from snout tip to rear of cloaca) and longer in adult male (length 1.1 times distance from snout tip to rear of cloaca); tail width 1.5-1.8 times height at its midlength, 1.4-1.7 times at first dorsal-fin origin; pre-upper jaw length is 17-18% TL, 2.0-2.2 times internasal width; ventral head length is 29-32% TL; snout length is 3.3-3.4 times interorbital width; orbit diameter 67-85% interorbital width; first dorsal-fin height 2.0-2.7 in its base length; long procaudal length, its distance from first dorsal-fin origin to tail tip 3.1-4.0 times first dorsal-fin base length, 3.2-6.3 times caudal-fin length; the pelvic fins of medium size, length of posterior lobe 16-18% TL, length of anterior lobe 71-83% of posterior lobe; adult male without malar thorn patches; alar thorn patches are small, broadly oval; adult clasper with greatly extended components spike and sentinel; accessory terminal 2 cartilage with strongly articulated medial distal extension, partly overlaying axial cartilage on median margin; anterior margins of both surfaces of disc of females with narrow denticle bands; the single median series of thorns extending along entire midline of disc; tail thorns are well developed, numerous, in 3 closely spaced median rows and irregular lateral row on each side (absent from dorsolateral region of tail); thorns in central median row fewer and smaller than in rows adjacent; 80-82 total pectoral radials; 26-31 trunk centra; 79-85 predorsal centra; 133-138 total centra; 61-76 tooth rows in upper jaw. Colouration: brownish and white spotted, with large dark pectoral spots bordered with smaller white spots when fresh; rostral cartilage is demarcated from rest of snout; ventral surface whitish with outer margins of pectoral fins yellowish; ventral sensory pores are minute, indistinct, not black-edged or surrounded by greyish blotches; dorsal fins are dark anteriorly, paler posteriorly; the caudal fin pale or brownish (Ref. 112881).

Facilidad de identificación

Características merísticas de Orbiraja jensenae

Líneas laterales interrumpido: No
Escalas en la línea lateral
Escalas de la línea lateral con poros
Escalas en las series laterales
Filas de escalas sobre la línea lateral
Filas de escalas debajo de la línea lateral
Escalas alrededor del peduncule caudal
Barbillas
Hendiduras branquiales (solamente tiburones/rayas)
Branquispinas
en el miembro inferior
en el miembro superior
total
Vértebra
preanal
total

Aletas

Aleta(s) dorsal(es)

Cualidades
Número de las aletas
número de pínnulas Dorsal   
Ventral  
total de espinas
Total de rayos suaves
Aleta adiposa

Aleta caudal

Cualidades

Aleta(s) anal(es)

Número de las aletas
total de espinas
Total de rayos suaves

Aletas apareadas

Pectoral Cualidades  
espinas     
Rayos-suaves   
Pélvicas Cualidades  
posición    
espinas     
Rayos-suaves   
Referencia principal (por ej. 9948)
Glosario ( por ej. cephalopods )
Entrado por Capuli, Estelita Emily
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  Última modificación por sortiz, 06.27.17