![]() Compagno, Ph.D., the world’s foremost expert on sharks and Director of our Board of Trustees. An annotated and illustrated catalogue of shark species known to date. To further your learning about these truly amazing animals, we highly recommend Sharks of the world. Provided here are a number of sharks within each of the eight (8) orders. Each order tells us about the biology, physical characteristics and behavior of sharks in that order. Every species has two Latin names which allow people to be certain they are talking about the same creature no matter what language they speak.įor example, the scientific classification of the shortfin mako shark goes like this:Ĭlass: Chondrichthyes (cartilaginous fish)Įvery shark belongs to the classification Chondrichthyes which identifies them as cartilaginous fish, fish whose internal skeletons are comprised of flexible cartilage rather than bone.Ĭhondrichthyes consists of two groups, Holocephali and Elasmobranchii, and within Elasmobranchii are eight (8) orders of sharks. ![]() Brief descriptions are provided of two apparently new species of Grillotia currently represented in collections by single specimens.We Know Sharks LEARN ABOUT SOME OF THE 400+ SPECIES OF SHARKS.Īll organisms have scientific names, a name that is unique for each species. dollfusi) and uncinate hooks in the band on the external surface of the tentacle (differentiating it from G. erinaceus), a long pars vaginalis (differentiating it from G. Activity Answers Carnivores polar bear, great white shark, Nile crocodile, bald eagle. The new species differs from other members of the complex in lacking modified hooks 1 and 1' at the base of the tentacle (differentiating it from G. design a Venn diagram and be prepared to share it with the class. A basking shark liver weighing 940 kg (2,072 lb.) may yield as much as 2,270 liters (549 gallons) of oil. A great white shark weighing 3,312 kg (7,302 lb.) had a liver 456 kg (1,005 lb.) in weight. is described from Amblyraja radiata from the coasts of Iceland and Britain. A sharks liver is relatively large, making up 5 to 25 of its total body weight and takes up to 90 of the space inside its body cavity. in the Bering Sea and the Sea of Okhotsk are summarised and illustrations of this species provided. borealis Keeney & Campbell, 2001 from Bathyraja spp. The features of the terminal genitalia of G. (2021) (1.1) however, if suspected parthenotes are included, the rate among these three Zebra Sharks is substantially. rhina (Jordan & Gilbert), off Nanaimo on the western coast of Canada. Compared with Whitespotted Bamboo Sharks, rate of parthenogenesis was slightly higher for the three Zebra Shark females in this study (2) compared to the at least 6 females genetically confirmed parthenotes in Wyffels et al. musculara (Hart, 1936) is redescribed from new material collected from the type-host, R. erinaceus, are described for the first time. chilensis Guichenot off Chile is redescribed from the paratypes and features of the terminal genitalia, consistent with those of G. This shark species is known for its striking appearance, with a pattern of dark stripes on a pale yellow or brownish-grey body. in the Mediterranean are considered to be synonyms of G. 8 min read The zebra shark, also known as Stegostoma fasciatum, is a species of carpet shark that inhabits the Indo-Pacific region. recurvispinis Dollfus, 1969 from Raja spp. The redescription establishes the presence of: an hermaphroditic sac internal and external seminal vesicles (but absence of an accessory seminal vesicle) a uterine pore and the attachment of the retractor muscle in the mid-region of the tentacular bulb. in the eastern and western north Atlantic and the Mediterranean. Because of this, zebra sharks are often mistakenly referred to as leopard sharks. As they mature, the pattern changes to small dark spots on a grayish-tan background. Members of the trypanorhynch cestode genus Grillotia Guiart, 1927 belonging to the Grillotia erinaceus (van Beneden, 1858) species complex are redescribed. Overview These zebras lose their stripes As juveniles, zebra sharks have dark bodies with yellowish stripes.
0 Comments
Leave a Reply. |