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| Stegostoma fasciatum | |
|---|---|
| Name | Zebra shark |
| Status | VU |
| Status system | IUCN3.1 |
| Genus | Stegostoma |
| Species | fasciatum |
| Authority | (Herre, 1923) |
Stegostoma fasciatum
Stegostoma fasciatum, commonly called the zebra shark, is a distinctive carpet shark of the family Stegostomatidae known for its striking juvenile striping and adult spot patterns. Found in tropical Indian Ocean and Pacific Ocean coastal waters, it is recognized by aquarists, researchers, and conservationists across institutions such as the IUCN, World Wide Fund for Nature, and regional fisheries agencies. The species has been the subject of studies at academic centers including James Cook University, Monash University, and museums like the Smithsonian Institution.
Originally described by Albert William Herre in 1923, Stegostoma fasciatum is the sole extant member of the genus Stegostoma and the family Stegostomatidae. Its taxonomic history intersects with revisions published in journals associated with the Zoological Society of London and the Smithsonian Institution Bulletin, and has been assessed by taxonomists at institutions such as the Natural History Museum, London and the Australian Museum. The species has been referred to by common names including zebra shark and leopard shark in regional field guides produced by organizations like the Marine Conservation Society and the International Union for Conservation of Nature.
Adults reach lengths up to about 3 m and exhibit a cylindrical body, broad head, and long tail reminiscent of species documented in comparative works by researchers at University of Oxford and Harvard University. Juveniles display prominent brown-and-white transverse bands, a feature noted in field guides published by the Field Studies Council and observations from the Great Barrier Reef Marine Park Authority. Mature individuals transition to a golden-brown dorsum covered in dark spots, a pattern described in morphological keys used by curators at the Australian National University and the University of California, Santa Barbara. Anatomical studies citing specimens from the Natural History Museum, Paris and the Royal Ontario Museum highlight dermal denticles, five gill slits, and labial furrows comparable to descriptions in the literature of the American Museum of Natural History.
The species inhabits shallow coastal waters of the Red Sea, along the coasts of East Africa, across island chains including the Seychelles and Maldives, and eastward through the Andaman Sea, Indonesia, the Philippines, north to Japan and south to northern Australia. Records from the Coral Triangle and studies coordinated by agencies such as the Australian Institute of Marine Science and the Commonwealth Scientific and Industrial Research Organisation describe preferences for coral reef slopes, sandy lagoons, and seagrass beds at depths typically from 1 to 62 m. Habitat mapping collaborations with the United Nations Environment Programme and regional marine parks document seasonal movements near sites managed by the Great Barrier Reef Marine Park Authority and the Bali Marine Protected Area.
Stegostoma fasciatum is principally nocturnal, exhibiting benthic foraging behaviors observed in telemetry studies conducted by James Cook University and tagging programs run by the Australian National University. It forages on benthic invertebrates and small bony fishes, as reported in diet analyses by researchers at the University of Tokyo and the University of Cape Town. Associations with cleaning stations documented around reefs monitored by teams from the Smithsonian Institution and the University of Exeter indicate interactions with cleaner wrasses studied in publications from the Max Planck Society and the Scripps Institution of Oceanography. Predator-prey dynamics involving species catalogued at the American Museum of Natural History and behavioral observations from the Zoological Society of London inform its ecological role as a mesopredator in reef assemblages highlighted by the Convention on Biological Diversity.
Reproduction is oviparous, with females producing large, rectangular egg capsules as described in embryological studies by scientists at Monash University and the University of Queensland. Egg cases attached to reef structures have been documented by aquarium staff at the Sydney Aquarium and researchers at the National Oceanic and Atmospheric Administration. Developmental timelines, hatching behaviors, and juvenile ontogeny have been reported in hatchery reports from institutions such as the Zoological Society of London and the Bali Marine and Fisheries Department. Growth rates and longevity estimates are included in demographic models developed by the IUCN and regional fisheries research centers like the Southeast Asian Fisheries Development Center.
The IUCN Red List assesses the species as Vulnerable, reflecting population declines linked to pressures documented by the Food and Agriculture Organization and non-governmental organizations such as Shark Trust. Primary threats include bycatch in coastal gillnet and trawl fisheries monitored by authorities like the Australian Fisheries Management Authority and the Philippine Bureau of Fisheries and Aquatic Resources, habitat degradation from coastal development assessed by the United Nations Environment Programme, and targeted collection for the aquarium trade regulated in parts by the Convention on International Trade in Endangered Species of Wild Fauna and Flora. Conservation measures promoted by the IUCN Shark Specialist Group, regional marine protected area designations by the Great Barrier Reef Marine Park Authority, and species action plans developed with input from the World Wide Fund for Nature aim to mitigate declines.
Human encounters are generally non-aggressive; incidents recorded in regional reports by the Australian Maritime Safety Authority and hospital case studies at Royal Darwin Hospital are rare. Fisheries impacts include incidental capture reported in databases managed by the Food and Agriculture Organization and assessments by the Southeast Asian Fisheries Development Center; live-capture for public aquaria has been documented by institutions such as the Monterey Bay Aquarium and the Singapore Zoo. Education and outreach programs by organizations like the Australian Marine Conservation Society and the Marine Conservation Society work with tourism operators in destinations including Bali and the Maldives to promote responsible dive interactions and support monitoring efforts coordinated with universities including James Cook University and University of the Philippines.
Category:Stegostomatidae Category:Vulnerable fauna