[3] Every year, substantial numbers of Australian swellsharks are caught as bycatch in the southeast Australian shark gillnet fishery, and more in bottom trawls and on longlines. The skin is thick and covered by well-calcified, arrowhead-shaped dermal denticles, which are more sparse in young sharks. [2][3] The back and sides are light gray to brown, with an irregular pattern of close-set darker saddles and blotches along with many dark (sometimes light) spots, and a dark stripe from under the eye to the pectoral fin origins. Thread starter SageOf6Paths; Start date Jan 27, 2014; SageOf6Paths New Member. Edit by: GJ Edgar. Please use this form only for a single type It was collected at a depth of 165 m, 38 km north-east of Montague Island, New South Wales in … Draughtboard Shark. The second egg in a pair is deposited 12–24 hours after the first. The first dorsal originates over the forward half of the pelvic fin bases, while the second is located over the anal fin. The eggs hatch after 11–12 months. [9], One of the higher-level predators within its ecosystem, the Australian swellshark feeds on crustaceans (particularly crabs and rock lobsters), cephalopods (including squid and octopus), and small fishes. (2007). The underside is cream-colored, with some mottling on the fins and often a dark stripe running down the middle in adults. The draughtsboard shark differs from the Australian swellshark in coloration and the form of its egg capsules (smooth in C. isabellum and ridged in C. laticeps ). The mouth is extremely large, without furrows at the corners. The large, oval eyes are placed somewhat on the upper surface of the head, and have rudimentary nictitating membranes (protective third eyelids) and ridges underneath. again after submitting this form, Thank you for highlighting this error. Remember, you do NOT have to clean it as most Shark vacuums nowadays come with filters that require replacement and not cleaning. please report these in separate forms by clicking on this button [4] Whether there is a specific mating season is uncertain, though in terms of sperm production males are capable of breeding year-round. Discover Life's page about the biology, natural history, ecology, identification and distribution of Cephaloscyllium laticeps - Draughtboard Shark -- Discover Life [4][8] Males mature sexually at a length of 71–87 cm (28–34 in), and females at 75–86 cm (30–34 in). Australian swellsharks are sedentary and mainly nocturnal, with most individuals remaining within the same local area throughout the year. It can be identified by its variegated dorsal coloration of brown or gray patches and numerous spots. nov.A) is a species of concern belonging in the species group "fishes" and found in the following area(s): Australia.This species is also known by the following name(s): Whitefin Swell Shark. nov. A) is a species of concern belonging in the species group "fishes" and found in the following area(s): Australia. EPBC Act 1999 : Not listed Most Australian swellsharks present within a given region tend to remain there year-round, frequenting established feeding areas or preferred habitats. On the other hand, a minority of sharks have been recorded covering distances of up to 300 km (190 mi). Although the species is of little commercial value, it has recently been marketed in some areas. of error. They can store sperm for at least 15 months. Females have a single functional ovary and two oviducts, ovulating a single egg into each at a time. By inflating, the shark may be able to wedge itself inside crevices, make itself harder to swallow, or simply intimidate a would-be predator. The Australian swellshark serves as a host to a number of parasite species, but these are poorly documented. When threatened, it responds by rapidly taking in water or air to inflate its body, hence the name "swellshark". [4][8] This extremely hardy species can survive for more than a day out of water. [3], The Australian swellshark inhabits the continental shelf of southern Australia, from the Recherche Archipelago off Western Australia to Jervis Bay in New South Wales, including Tasmania. The draughtboard shark is a bottom dwelling species growing to 1.5 m in length. Males have larger teeth than females, with which to bite and hold onto them for copulation. Tracking studies have shown that some individuals are continuously active for months at a time, while others alternate activity with periods of stationary rest lasting up to five days. [2] The specific epithet laticeps is derived from the Latin latus, meaning "broad", with the suffix ceps, meaning "head". [2][7], The most abundant catshark species in the coastal waters of southern Australia, the Australian swellshark is a generally sluggish swimmer that is more active at night. [8] These animals are usually released, and likely suffer minimal mortality due to their resilience. These include larger fishes, such as the broadnose sevengill shark (Notorynchus cepedianus), and marine mammals. The head comprises no more than a fifth of the total length and is broad and moderately flattened, with a very short, thick, blunt snout. isabellum). At six months, embryonic growth accelerates and the yolk sac begins to shrink, disappearing by nine to ten months of age. games and coloring pages! 2008. standards, Cephaloscyllium laticeps, Hobart, TAS, Photo: Rick Stuart-Smith, Cephaloscyllium laticeps, Tasman Peninsula, TAS, Photo: Antonia Cooper, Cephaloscyllium laticeps, Beware Reef, Vic, Photo: Andrew Green. Harmless and of little commercial interest, many Australian swellsharks are caught incidentally in gillnets and bottom trawls but usually survive to be released because of their extreme hardiness. [8], The Australian swellshark is harmless to humans and seldom utilized, though recently in parts of Tasmania some have begun to be marketed as a source of "flake". Draughtboard sharks form a significant part of the bycatch in the southern gillnet fishery. Video of a Draughtboard Shark and eggcase in Tasmania. Froese, Rainer and Pauly, Daniel, eds. Would you like to receive a notice and link when the Its name comes from the patchwork blotches on its back, which provides good camouflage against the brown seaweed and blotchy coloured sediment of the Derwent estuary. They are usually released and mortality appears to be low. Even large-sized prey tends to be swallowed whole; the long periods of rest exhibited by some sharks may relate to digestion. New Holland, Sydney. Cephaloscyllium nascione Whitley, 1932Scyllium laticeps A. H. A. Duméril, 1853. The saddled swellshark (Cephaloscyllium variegatum) is a rare species of catshark, and part of the family Scyliorhinidae, endemic to Eastern Australia.This bottom-dwelling species is found on the outer continental shelf and upper continental slope at a depth of 115–605 m (377–1,985 ft). More to come soon. The first scientific description of the Australian swellshark, as Scyllium laticeps, was published in 1853 by French zoologist Auguste Duméril, in the scientific journal Revue et Magasin de Zoologie. This bottom-dwelling species can be found on the continental shelf down to a depth of 220 m (720 ft). During the day, it is often found resting singly or in groups under ledges or inside caves. [2][3], There are two dorsal fins, the first much larger than the second. Video of harmless Swell Sharks in Port Phillip Bay - easily attracted to bait and sometimes ill-treated by local anglers. The Australian swellshark or draughtboard shark (Cephaloscyllium laticeps) is a species of catshark, and part of the family Scyliorhinidae, endemic to southern Australia.This bottom-dwelling species can be found on the continental shelf down to a depth of 220 m (720 ft). The draughtboard shark reaches 1.5m in length and is reported to be one of the most common sharks encountered in the temperate waters of southern Australia. [6] The maximum known length is 1.5 m (4.9 ft), though few exceed 1.0 m (3.3 ft). new Creature Feature is posted? Check out our Harmless slow-moving shark with an inflatable stomach, the reason why one of its common names is the ‘swell shark'. This shark is oviparous and females lay pairs of distinctively ridged egg capsules at 20- to 30-day intervals. Occurrence describes how often the species is found on surveys within its distribution. Females produce eggs throughout the year, laying them in pairs approximately once every 20 days from January to June, and once every 30 days the rest of the year. This specimen is the holotype of Cephaloscyllium isabella laticeps nascione, Whitley, 1932 (AMS IA.2829). Dec 20, 2013 24 2 3 27 Tasmania. Search for an endangered species profile. It is calculated as the % of reef sites surveyed by RLS divers across all the ecoregions in which the species has been observed. This shark is found in depths from 6m to 60m off the states of Victoria, South Australia, southern New South Wales, southern Western Australia and especially Tasmania. Australian Marine Life. Cephaloscyllium laticeps, Hobart, TAS, Photo: Rick Stuart-Smith. If you see multiple errors on the page for this species, Visit vnpa.org.au/reefwatch to find out more about our ReefWatch program (including the Reef Cam and the Great Victorian Fish Count projects). It feeds on small crustaceans, cephalopods, and fishes. Facts Summary: The Draughtboard Shark (Cephaloscyllium sp. "The reproductive biology and movement patterns of the draughtboard shark, (, International Union for Conservation of Nature, Biological Profiles: Australian Swellshark, "Biological Profiles: Australian Swellshark" at Florida Museum of Natural History, https://en.wikipedia.org/w/index.php?title=Australian_swellshark&oldid=973522855, Creative Commons Attribution-ShareAlike License, This page was last edited on 17 August 2020, at 17:52. The fins do not have sharply lighter margins.
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