Règne :
|
Animalia
|
Embranchement :
|
Chordata
|
Classe :
|
Elasmobranchii
|
Ordre :
|
Rajiformes
|
Famille :
|
Rajidae
|
Genre :
|
Dipturus
|
Espèce :
|
batis
|
Nom Français : |
Pocheteau gris
|
Nom Vernaculaire : |
Skate
|
Description :
|
snout very long and pointed, disc broadly rhombic with acute outer corners, anterior margins distinctly concave. Upper surface smooth in young, partly prickly in larger specimens, more so in adult females. Separate small orbital thorns may be present in juveniles; larger specimens without anv thorns on disc: a row of 12-18 thorns along tail, 1-2 thorns between dorsal fins (rarely none), and thorns often along lower edges of tail (regularly so in females); underside smooth in young, partly prickly in larger specimens, more so in adult females. Colour: upper surface olivegrey or brown with a variable pattern of light spots, dusky blotches and often an oval like an eye-spot on each pectoral fin in subadults; underside ashy-grey to blue-grey; mucous pores on both sides of disc always marked as black dots and short streaks, very numerous all over underside of disc, pattern apparently irregular. Size: to about 250 cm TL, males smaller.
|
Auteurs & dates :
|
Dipturus batis (Linnaeus, 1758)
|
Recherche des images :
|
|
|
Photo
|