X-ray evaluation of stingray wounds is an unnecessarily misunderstood diagnostic concept. Stingray injuries can be accompanied by symptoms (some mild, some serious) such as those listed below: There is a puncture wound. A round stingray in a Bolsa Chica wetland, CA creating clouds of sand. The digging of these pits plays an ecologically important role, as they also uncover prey for smaller fish. Three control tests were conducted in the process of the experiment. External parasites include copepods and leeches, while 16 species of tapeworms are known from its digestive system, including Phyllobothrium hallericola n. sp. The barb is fairly long and pointed and has several serrations that go in the opposite direction – making it look almost like a Christmas tree in shape. A stingray’s tail is long, thin, and tapered, much like a whip. Urolophus halleri Cooper, 1863 4. We present the case of a patient stung by a stingray with a prolonged and complicated course and permanent disability due to a retained barb. Predators [2], In the northern part of its range, round stingrays are preyed upon by the northern elephant seal and the giant sea bass. The Stingray earned a great deal of negative attention when animal promoter and enthusiast Steve Irwin was stung by one and died. Almost all stings occur on the top of the foot. When it is sold under the last two names, it is often misidentified with the very similar Cortez round stingray (Urobatis maculatus)[citation needed]. The wound … ern United States, the southern stingray (Dasyatis ameri­ cana) is the ray species most often causing envenomation to humans. Click on the image to find out more detail about them. [citation needed]. Distinctive Features [2], The tail spine is periodically shed and replaced; for most of the year round stingrays have only one spine, but at the beginning of July small secondary spines begin to appear. Further south in the Gulf of California, females mate and give birth earlier, from late winter to spring. The Cortez stingray (Urolophus maculatus) is similar to the round stingray, however the dark blotches on each side of its disc can distinguish it. The species name, halleri, is after the young son of Major Granville O. Haller of the United States Army, who was stung on the foot while wading along the shores of San Diego Bay. Round Stingray Spines. Stingray stings are very rarely fatal. It also has a venomous spine halfway down its tail, so caution should be used handling these rays, or when in its habitat. Other common names are ignelivatoz (Turkish), pastinaca (Italian), peitschenrochen (German), pigrokke (Danish), pilrokke (Norwegian), raie ronde de Haller ( French), raya (Spanish), raya de espina (Spanish), raya redonda de Haller (Spanish), ronde doornog (Dutch), sálahi trygéna (Greek), siba zutulja (Serbian), stechrochen (Ger… In winter, they move to deeper water where the temperature is more stable. This action serves to expose any buried worms, crabs or small fish. Stingray-related fatalities (in humans) are extremely rare, partly because a stingray's venom, while extraordinarily painful, isn't usually deadly -- unless the initial strike is to the chest or abdominal area. A round stingray in the Reiman Aquarium at Discovery World. Called stingrocka in Sweden, which seems appropriate because a sting will […] While they can grow to over 22 inches long, they average only 8 to 10 inches long generally. The dangerous part of a stingray is its infamous tail. A ray'spoisonous spine (usually one but upto four) at the base ofits long, thin tail is used to defend against attack by Juvenile round stingrays feed on polychaetes, crustaceans, and nemerteans. A round stingray caught in San Diego Bay, CA. Stray electrical currents and concentrations of metal in the tank water should be avoided meaning that copper should not be used as medicine on this ray. During the mating season, solitary males search for females using visual and electrosensory cues. Although stingrays do not attack people, the tail spines can cause painful wounds if stepped upon or handled without caution. The barb of a stingray is much larger than that of a jellyfish. Most aren't fatal. There are numerous parasites reported from the round stingray including approximately 19 families and 40 species are found on or in the round stingray. The litter size increases with female size. Cooper originally described the round stingray in 1863 as Urolophus halleri. The teeth are small and diamond-shaped, and sexually dimorphic in that the central teeth of males are erect, sharply pointed, and curved inward. On the West Coast, the round stingray (Urolophus halted) is most often responsible [3,4]. Round rays like warm water and they are very abundant among other stingrays of the same size. The thornback (Platyrhinoidis triseriatea) can be distinguished by the presence of two dorsal fins and the three rows of tubercles along the back of adult individuals while the Pacific electric ray (Torpedo californica) can be distinguished by its two dorsal fins and lack of a venomous spine on the tail. This ray has a smooth skin, lacking the tubercles often found on other species. (2014): Elasmobranch Enthusiasts (Part 1): Modern Husbandry – Space | saltwatersmarts.com. • The back of the round stingray is brown, often mottled or spotted, and the underside is white to orange. First of all, they’re not out there to … Parasites At the end of the tail are one or more barbed spines covered by a sheath. Small individuals should be fed non fibrous foods like frozen Mysid shrimp, live Brine shrimp and Blackworms, and finely chopped Shrimp. > Check the status of the round stingray at the IUCN website. [2] Due to its abundance and relatively high rate of reproduction, the round stingray is assessed as of Least Concern on the IUCN Red List. These ectoparasites include copepods and leeches. [1] This species is also taken as bycatch by shrimp trawlers, who consider them a nuisance as large groups often become entangled in the nets. The initial pain was brief and my adrenaline began to kick in. The barbs are used to deter potential predators. [3], Round stingrays prefer temperatures above 10 °C (50 °F); the adults are more tolerant of temperature changes than juveniles. Another cestode that has been reported from this stingray isAcanthobothrium olseni. Predators of the round stingray in its northern range include the northern elephant seal (Mirounga angustirostris) and the black sea bass (Stereolepis gigas). In fact, there have been fewer than 30 stingray-related fatalities that have ever been recorded! The life expectancy is believed to be about 8 years. Additional parasites that may be found in this ray's spiral valve intestine include Eimeria chollaensis sp. [6], As with other stingrays, the round stingray reproduces through aplacental viviparity, bearing litters of 1-6 young with an average of 2-3. [4], The round stingray has a nearly round pectoral fin disc usually colored brown or grayish brown above, with pale yellow spots or reticulations. These individuals should not be purchased. A portion of the population mate and give birth in winter, allowing for a second breeding season later that same year. It is able to survive extended periods in captivity and is often used in public aquarium facilities. Denticles Discover (and save!) [2] Round stingrays have been observed congregating near the warm seawater effluent released by coastal electric generators, which may replicate the conditions of estuary environments. The females often escape, resulting in failure of copulation. Tankmates that should be avoided are Scorpionfish, Butterflyfish, large Angelfish (Pygoplites/Pomacanthus/Holacanthus), Filefish, Triggerfish, Pufferfish, Porcupinefish, certain Sharks (Ginglymostomatidae/Orectolobidae), large Crabs, Hermit crabs, and Sea anemones. constant not chaotic flow), a total flow rate of 10+ the tank's volume per hour moving in a fashion similar to that of a whirl pool (with no areas of low flow in the tank), and a water temperature of in between 12 °C (53.6 °F) and 22 °C (71.6 °F) is suitable for this ray. This ray has been observed to scoop out large holes in the muddy or sandy bottom by “waving” its pectoral fins and rostrum. Our round stingrays feed on a diet of diced shrimp. An interesting scientific finding is that reproductively mature females emit localized positive electric fields from near the spiracles behind each eye. Although this ray is of only minor commercial fisheries interest, it is fished recreationally as a game fish. The tail is long, slender and sharply differentiated from the The wound may be ragged and gaping. Round stingrays are daytime foragers that are most active in the warm temperatures of summer and fall. The round stingray or Haller's round ray and Little round stingray is a species of round ray, family Urotrygonidae, found in the coastal waters of the eastern Pacific Ocean. These smaller stingrays have an almost circular pectoral disc, with a slightly rounded point at the snout, and a short tail that lacks dorsal fins but does have a small caudal (tail) fin, which is unusual for rays. : California Stingray - Miscel - Saltwater Fish, : Round Stingray (Round Ray) - Aquarium of the Pacific, https://en.wikipedia.org/w/index.php?title=Round_stingray&oldid=985075166, Articles with unsourced statements from August 2019, Taxonbars with automatically added original combinations, Creative Commons Attribution-ShareAlike License, This page was last edited on 23 October 2020, at 20:09. The most obvious parasites are those living on the outside of the ray’s body, also known as ectoparasites. A tetanus shot may be administered, if necessary. Each newborn measures 2.5-3.1 inches (6.3-8.0 cm) disc width. They are gray on top, sometimes with darker blotches or spots, and pale yellow-orange to white underneath. You can see I've got a neoprene dive glove wrapped around the tail. The hole from the stinger (barb) can be quite large and may have a jagged appearance. The spinal blade is also known as the stinger or barb. This ray occurs to depths from the surface to 300 feet (91 m), however it is primarily found in waters less than 50 feet (15 m) in depth. sp., was documented from the spiral valve intestine of two round stingrays from the Sea of Cortez. The round stingray is found in the eastern Pacific Ocean from Eureka in northern California (U.S.) south to Panama Bay, Panama. This biting behavior functions to maintain contact between the pair during copulation. On the beaches of southern California, it is responsible for numerous injuries to bathers, who are stung when they accidentally step on the fish. Nasty Barb of a Stingray. [2] Female round stingrays emit a localized positive electric field from near the spiracles behind each eye, which serves to attract males. 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