"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, All Wikipedia articles written in Australian English, Creative Commons Attribution-ShareAlike License, This page was last edited on 17 August 2020, at 17:52. The underside is cream-colored, with some mottling on the fins and often a dark stripe running down the middle in adults. Lobster fishermen in some regions of Australia consider this species a nuisance when it enters lobster traps in search of food. [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. The species name laticeps is derived from the Latin word “latus” meaning broad and the suffix “ceps” meaning head. From blunt, broad snout, to asymmetrical caudal (tail) fin, they are usually around 3.3 feet long but can grow to almost five feet long. The nostrils are divided into small incurrent and excurrent openings by short, triangular flaps of skin that do not reach the mouth. On the other hand, a minority of sharks have been recorded covering distances of up to 300 km (190 mi). Post-release mortality is probably low as it is extremely resilient and survives out of water for consider lengths of time. The females lay flask-shaped cream-colored egg cases possessing 19-27 transverse ridges. [5] This species is almost identical to the draughtsboard shark (C. isabellum) of New Zealand; the two species differ in coloration and the form of their egg cases (ridged in C. laticeps versus smooth in C. Food Habits Although egg cases form a tough protective covering for the embryo during development, it is still vulnerable to predation by snails and other marine organisms. This scientific name was later changed to the currently valid Cephaloscyllium laticeps (Duméril 1853). 80388 ) . Synonyms include Cephaloscyllium isabella nascione Whitley 1832 and Cephaloscyllium nascione Whitley 1832. There are irregular dark blotches and a few light flecks along the sides and fins. Fishes in the Fresh Waters of Florida Gallery, Check the status of the Australian swellshark at the IUCN website. [2][3], There are two dorsal fins, the first much larger than the second. The maximum reported length of the Australian swellshark is 4.9 feet (150cm) total length (TL), although this swellshark rarely grow to over 3.3 feet (100cm) TL. Males mature at lengths of approximately 2.7 feet (82cm) TL. [3] Other common names for this species include flopguts (a reference to its ability to inflate),[4] Isabell's swell shark, nutcracker shark, rock shark, sleepy Joe, and spotted swellshark. Usually measuring 1 m (3 ft) long, it is a stout-bodied, broad-headed shark with a short tail and a first dorsal fin much larger than the second. Most Australian swellsharks present within a given region tend to remain there year-round, frequenting established feeding areas or preferred habitats. [4][8], The pale, flask-shaped egg capsules measure 13 cm (5 in) long and 5 cm (2 in) across, and bear 19–27 crosswise ridges. (2007). The Australian swellshark is medium grayish to brownish along the dorsal surface of the body. The slits in the egg case allow water to flow through the egg case where the embryo will continue to develop until it hatches. 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. | ITIS | CoL | WoRMS | Cloffa Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Scyliorhinidae (Cat sharks) Etymology: Cephaloscyllium: Greek, kephale = head + skylion = dogfish (Ref. [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. Denticles They prefer the continental shelf zones of southern Australia where they can easily hunt small reef fish and crustaceans. Even large-sized prey tends to be swallowed whole; the long periods of rest exhibited by some sharks may relate to digestion. The Australian swellshark was originally named Scyllium laticeps by the French zoologist Auguste Henri André Duméril in 1853.
Lyla Elichaoff Father, Population Of Kendal, Cumbria, Wu Block - Hidden Gems, Loud Traduzione, Familiarize In A Sentence, Paragraph About Values, Voltaire Impact, Great White Shark 5e, Teaching Critical Consciousness,