3 documents found, page 1 of 1
Morphology of lateral line canals in Neotropical freshwater stingrays (Chondric...
Shibuya, Akemi; Zuanon, Jansen; Araújo, Maria Lúcia Góes de; Tanaka, ShoThe relationship between the distribution of the lateral line canals and their functionality has not been well examined in elasmobranchs, especially among Neotropical freshwater stingrays of the family Potamotrygonidae. The spatial distribution of the canals and their tubules and the quantification of the neuromasts were analyzed in preserved specimens of Potamotrygon motoro, P. orbignyi, Potamotrygon sp. "curu...
Feeding behavior of the Neotropical freshwater stingray potamotrygon motoro (El...
Shibuya, Akemi; Zuanon, Jansen; Tanaka, ShoThe feeding mechanisms of elasmobranchs and their functioning have been receiving growing scientific attention, although less emphasis has yet to be directed towards batoid species. The present study investigated the use of orobranchial musculature during prey capture and processing behavior in Potamotrygon motoro. Ten orobranchial muscle groups were removed to determine their relative biomasses. The kinematics...
The use of pelvic fins for benthic locomotion during foraging behavior in Potam...
Shibuya, Akemi; Carvalho, Marcelo Rodrigues de; Zuanon, Jansen; Tanaka, ShoSynchronized bipedal movements of the pelvic fins provide propulsion (punting) during displacement on the substrate in batoids with benthic locomotion. In skates (Rajidae) this mechanism is mainly generated by the crural cartilages. Although lacking these anatomical structures, some stingray species show modifications of their pelvic fins to aid in benthic locomotion. This study describes the use of the pelvic ...