Ginglymostoma cirratum, the nurse shark, resides in coastal waters in the Pacific and Atlantic Oceans. In the Pacific Ocean, nurse sharks are found in waters off. Ginglymostoma cirratum. These bottom dwelling sharks are usually yellowish-tan to dark brown and, as adults, average around to 8 feet. Reference for: Ginglymostoma cirratum. Source: NODC Taxonomic Code, database (version ). Acquired: Notes: Reference for: Ginglymostoma cirratum.
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Nurse sharks are polygynandrous and both sexes have multiple partners through a several week mating period in June and July. The nurse shark has two rounded dorsal fins, rounded pectoral fins, an elongated caudal fin, and a broad head.
Harper Collins Publishers Ltd. Taxonomy The nurse shark was first described by Bonnaterreas Squalus cirratus.
IUCN Red List of Threatened Species
The polyps live only on the reef surface. The ADW Team gratefully acknowledges their support. During courtship, a pair sometimes a triplet of adults were observed engaged in synchronized parallel swimming. Nurse sharks are adapted to suction-feed within 3 cm of their mouth.
Based on morphological similarities, Ginglymostoma is believed to be the sister genus of Nebriuswith both being placed in a clade that also include species Pseudoginglymostoma brevicaudatumRhincodon typusand Stegostoma fasciatum. Like other sharks, the purpose of the male’s siphon sac is to assist in sperm competition and to flush rival sperm out.
Each pup measures cm However, some unprovoked attacks on swimmers and divers have been reported. Nurse sharks are very social cirrarum use sight, sound, electroreception, touch, and gunglymostoma to detect its surroundings. Reproductive biology of elasmobranchs. Multiple studies had the same tagged specimen return over the course of multiple years. Shortfin mako shark I.
Juveniles are generally found around shallow coral reefs, grass flats or mangrove islands in meters ft of water Castro The nurse shark genus Ginglymostoma is derived from Greek language cirratmu hinged mouth, whereas the species cirratum is derived from Latin meaning having curled ringlets. Join Us Support Our Efforts.
Description & Behavior
ginglymowtoma If disturbed, they glnglymostoma bite with a powerful, vice-like grip capable of inflicting serious injury. Ecotourism implies that there are existing programs that profit from the appreciation of natural areas or animals.
Because they depend on symbiotic photosynthetic algae, zooxanthellae, they cannot live where light does not penetrate. A Dictionary of Zoology. Eyes are very small 6. While ADW staff and contributors provide references to books and websites that we believe are reputable, we cannot necessarily endorse the contents of references beyond our control. Pseudocarcharias Crocodile shark P.
New Caledonia catshark A. Nurse sharks are exceptionally sedentary unlike most other shark species. Male nurse sharks begins mating by nudging the female into position with their head.
Tooth replacement occurs faster in summer, when water temperatures are higher Luer et al. Bullhead, mackerel and carpet sharks Heterodontiformes, Lamniformes and Orectolobiformes. Order Carcharhiniformes Ground sharks. The vulnerability off the coast of South America, Central America, and Caribbean has caused it to be assessed as “Near Threatened” in these areas.
It is not true that that all sharks need to swim in order to breathe, and when they cannot for whatever reason, they die. Gollum Ginlymostoma smooth-hound G.
Help us improve the site by taking our survey. Castro, ; Compagno, ; Ebert, et al. Order Squatiniformes Angel sharks. Often he cirratmu bite a pectoral fin or flank in order to hold on. In other areas, nurse sharks are caught and killed by fishermen as they are considered a nuisance animal that takes bait intended for other species.
Stegostoma Zebra shark S. Similarities in the reproductive cycle and molecular phylogenetic data indicate a close relationship between the nurse shark family Ginglymostomatidae and the whale shark family Rhincodontidae.
Nurse Sharks, Ginglymostoma cirratum ~
There is also no established expected age in the wild. Rhincodon Whale shark R. Sharks of the World. Female nurse sharks only reproduce every other year. The nurse shark is a common reef-associated bottom-dwelling shark found in brackish and marine environments in the shallows to m.
If the female is receptive, she will arch her body toward the male, cupping her pelvic fins. Nurse sharks use olfaction to find prey. Nurse sharks can switch to this respiratory system when they are at rest, saving energy and the necessity to swim to move water and oxygen over their gills. Ctenacis Harlequin catshark C. Historically, nurse sharks were targetted for their liver oil and for their skin which yields high quality leather Compagno et al.
Nurse sharks are ovovivoparous or aplacental viviparous Compagno,