Please note, this National Red List website contains a subset of data whilst we transition to national focal point driven data uploads. We thank you for your patience with this and welcome national contributors to get in touch to update their national dataset. Terms of Use including citation guidance are found here.

The previous dataset is available via: https://archive.nationalredlist.org/. This site is no longer updated but can help with most enquiries whilst we focus on redevelopment.

NRLD - 330001 | Carcharhinus sorrah

Assessment ID
330001
Taxon name
Carcharhinus sorrah
(Müller & Henle, 1839)
Uploaded by
National Red List Database
Taxonomic information
Scientific name
Carcharhinus sorrah
(Müller & Henle, 1839)
Assessed taxon level
Species
Higher level taxonomic groupings
Vertebrates
Fishes
Kingdom
Animalia
Phylum
chordata
Class
chondrichthyes
Order
carcharhiniformes
Family
carcharhinidae
Genus
Carcharhinus
Species
sorrah
Species authority
(Müller & Henle, 1839)
Location and scope
Specific locality or subnational name or regional name
United Arab Emirates (the)
Scope (of the Assessment)
National
Countries included within the scope of the assessment
United Arab Emirates (the)
Country ISO code(s)
ARE
Does the assessment cover a marine EEZ area(s)?
Not_assigned
Conservation Status
Assessed as
Vulnerable
Abbreviated status
VU
Qualifying criteria (if given)
A2cd
Criteria system used
IUCN

(see Assessment details)

Assessment rationale/justification
The Spottail Shark occurs throughout UAE inshore and offshore waters. It is commonly taken in a wide range of artisanal and commercial fisheries and is often one of the dominant species in shark catches in the Arabian Sea region. Inshore fishing pressure is intense and increasing. Anecdotal information indicates that declines have occurred over the past 20 years in UAE waters; however, quantitative data are not available to estimate the percent decline over three generation lengths (about 24 years). It is especially susceptible to exploitation (target and bycatch) in many largely unregulated gill net, longline and trawl fisheries that operate within its range outside and surrounding UAE waters. Some management measures are now in place in the Arabian Sea region, although domestic fisheries are likely to continue. Though data specifically from the UAE are not available, individuals in the UAE are a component of a larger, interconnected and migratory population that occurs broadly in the north-western Indian Ocean. It is inferred that declines reported in the Arabian Sea region are representative of its status in the UAE. Based on recorded levels of exploitation and decline in habitat quality, it is suspected to have declined by 30-50% over the past three generation lengths, or about 24 years. It is listed as Vulnerable A2cd.
Assessment details
Year assessed
2019
Assessors/contributors/reviewers listed
UAE National Red List Workshop
Criteria system used
IUCN
Reference for methods given
IUCN. 2012. IUCN Red List Categories and Criteria: Version 3.1, Second edition. IUCN, Gland, Switzerland and Cambridge, UK. iv + 32pp pp. And IUCN. 2012. Guidelines for Application of IUCN Red List Criteria at Regional and National Levels: Version 4.0. Gland, Switzerland and Cambridge, UK: IUCN. iii + 41pp.
Further information
Endemism (according to assessment)
Endemic to region
Not assigned
Taxon distribution as listed in assessment
The Spottail Shark occurs throughout UAE waters. Globally, it is widespread in the tropical Indo-West Pacific (Last and Stevens 2009).
Is there a map available in assessment?
Yes
Habitat and systems
Ecological system type
Terrestrial
Not_assigned
Freshwater
Not_assigned
Marine
Yes
Habitat
Habitat details as listed in assessment
A common, inshore shark, the Spottail Shark is found on continental and insular shelves from close inshore to a depth of at least 140 m (Compagno and Niem 1998). The species is common over mud and sand bottom in depths between 20-50 m but also occurs near coral reefs (Last and Stevens 1994). In the Arabian Seas region, it grows to 196 cm TL (Jabado et al. 2016), which is larger than reported for this species in Australia and southeast Asia (to 160 cm TL) (Ebert et al. 2013). This species is born at 44 - 72 cm TL, males mature at 106-109 cm TL and females at 110-118 cm TL (Ebert et al. 2013, Jabado et al. 2016). It is viviparous with a yolk-sac placenta (White et al. 2006, Compagno et al. 2005). It exhibits a gestation period of 11 months and a reproductive periodicity of one year. Litter size in the region ranges from 2-4 pups/litter (Elhassan unpubl. data). Ageing data from Australia indicates that maturity occurs at 2-3 years and reaches a maximum of 14 years (Davenport and Stevens 1988). Generation length is estimated to be 8 years.
Threats and conservation measures listed
Threats listed in assessment
In the UAE, sharks have been impacted by targeted commercial fisheries until 2014 when a ban on export of sharks was imposed (Ministry of Climate Change and Environment). Sharks continue to be impacted by artisanal and bycatch fisheries (Annual Fisheries Statistical Report for Abu Dhabi Emirate 2001-2018), though catch data are not species-specific. Marine habitats in the region have experienced high levels of disturbance and are quickly deteriorating due to major impacts from development activities (Sheppard <em style=""font-variant-ligatures: normal;font-variant-caps: normal;orphans: 2; text-align:start;widows: 2;-webkit-text-stroke-width: 0px;text-decoration-style: initial; text-decoration-color: initial;word-spacing:0px"">et al. 2010). Corals in the UAE and Arabian Gulf have severely declined due to the increasing frequency of mass bleaching events caused by rising water temperatures, which is a consequence of climate change, as well as pervasive coastal development (Riegl et al. 2018, Burt et al. 2019).
Publication
Ralph, G.M., Stump, E., Linardich, C., Bullock, R.W., Carpenter, K.E., Allen D.J., Hilton-Taylor, C., Al Mheiri, R., and Alshamsi, O. 2021. UAE National Red List of Marine Species: Reef-building corals, cartilaginous fishes and select bony fishes. 2021. Ministry of Climate Change and Environment, Dubai, United Arab Emirates.