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Posterior anatomy of a stingray. (1) Pelvic Fins (2) Caudal Tubercles (3) Stinger (4) Dorsal Fin (5) Claspers (6) Tail. The venom of the stingray has been relatively unstudied due to the mixture of venomous tissue secretions cells and mucous membrane cell products that occurs upon secretion from the spinal blade. The spine is covered with the ...
The serrated tail spine of the common stingray is potentially dangerous. Though not aggressive, the common stingray can inflict an excruciating wound with its serrated, venomous tail spine. [13] The ancient Greeks and Romans greatly feared its venom, with authors such as Aelian (175–235 AD) stating that stingray wounds were incurable.
Tail large caudal fin whose primary function is to provide main forward propulsion varies from thick tail as extension of body to a whip that can sting to almost no tail. Locomotion: swim by moving their tail from side to side Guitar fish and sawfish have a caudal fin like sharks swim by flapping their pectoral fins like wings
The tail is long and whip-like, with a serrated spine measuring a quarter of the width of the disk. The spine is replaced annually between June and October. Dorsal and ventral fin folds are present on the tail. [3] [8] Larger Atlantic stingrays develop tubercles or thorns along the midline of the back to the origin of the tail spine.
The tail has two stripes of the same blue running along each side as far as the spines. The eyes are bright yellow and the belly is white. [3] [8] Individuals found off southern Africa may lack the blue tail stripes. [10] The bluespotted ribbontail ray grows to 35 cm (14 in) across, 80 cm (31 in) long, and 5 kg (11 lb). [5] [11]
In order to sting their victims, they jerk their tails as the stinger falls off and stays in the wound that they have created. The stinger of a whiptail stingray is pointy, sharp with jagged edges. They range in size from 0.18 to 2.0 m (0.59 to 6.56 ft) or more across in the case of the smalleye stingray and giant freshwater stingray.
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The base of the tail is broad; past the spine, the tail rapidly thins, and bears a deep ventral fin fold that runs to the tail tip. [8] The upper surface of the disc and tail are roughened by a uniform covering of small, widely spaced granules. There is also a midline row of sharp tubercles on the back, with two shorter rows alongside.