Round whipray

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Round whipray
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Batoidea
Order: Myliobatiformes
Family: Dasyatidae
Genus: Maculabatis
Species:
M. pastinacoides
Binomial name
Maculabatis pastinacoides
(Bleeker, 1852)
Synonyms
  • Trygon pastinacoides Bleeker, 1852
  • Himantura pastinacoides (Bleeker, 1852)
Malay Archipelago

The round whipray (Maculabatis pastinacoides) is a species of stingray within the family Dasyatidae.[2] Populations of round whipray are primarily located in the Malay Archipelago more specifically, parts of Brunei Darussalam, Indonesia, Malaysia, Myanmar, Singapore, and Thailand. There is also the possibility this species of stingray exists in areas of Bangladesh and Sri Lanka as well.[3] In 2004, the round whipray was assed by the IUCN Red List and determined to be a vulnerable species.[4] The most recent assessment in 2020 has determined this species to now be endangered. While there is no data accumulated to identify the population size of round whiprays specifically, data collected regarding similar whipray species from fisheries in the Malay Archipelago area, indicate a decline in the population of round whiprays.[3]

Habitat

The round whipray prefers to live close to the floor in the Indo-Pacific Ocean. They can be found on surface waters all the way down to a maximum depth of 60 m.[3]

Morphology & Behavior

Round whiprays give birth to live young, with the size at birth of their offspring ranging from 15-16 cm in disc width. Male round whiprays reach maturity once they are 43-46 cm disc width whereas females are not considered mature until they are roughly 58 cm disc width. [3]An adult round whipray can reportedly reach a maximum size of 86 cm disc width. Round whiprays reproduce by pairing with embrace.[2] This species has the potential of reproducing only one pup per litter, with each generation of round whipray living for about 20 years. [3]

Human Intervention

Round whiprays are bycatch in large and small scale fisheries. While there are no conservation efforts towards the preservation and or restoration of round whiprays, there are measures in place to limit large fisheries from over harvesting. This in turn could help round whiprays that are captured as a byproduct of fishing operations in the area have a chance to recover in their populations.[3]

References

  1. ^ Sherman, C.S.; Bin Ali, A.; Bineesh, K.K.; Derrick, D.; Dharmadi, Fahmi, Fernando, D.; Haque, A.B.; Maung, A.; Seyha, L.; Tanay, D.; Utzurrum, J.A.T.; Vo, V.Q.; Yuneni, R.R. (2020). "Maculabatis pastinacoides". IUCN Red List of Threatened Species. 2020: e.T161540A124503092. doi:10.2305/IUCN.UK.2020-3.RLTS.T161540A124503092.en. Retrieved 20 November 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link)
  2. ^ a b Froese, Rainer; Pauly, Daniel (eds.) (2015). "Maculabatis pastinacoides" in FishBase. February 2015 version.
  3. ^ a b c d e f Sherman, C.S., Bin Ali, A., Bineesh, K.K., Derrick, D., Dharmadi, Fahmi, Fernando, D., Haque, A.B., Maung, A., Seyha, L., Tanay, D., Utzurrum, J.A.T., Vo, V.Q. & Yuneni, R.R. 2020. Maculabatis pastinacoides. The IUCN Red List of Threatened Species 2020: e.T161540A124503092. https://dx.doi.org/10.2305/IUCN.UK.2020-3.RLTS.T161540A124503092.en. Accessed on 27 April 2024.
  4. ^ Manjaji Matsumoto, B.M., Last, P.R., Fahmi & White, W.T. 2016. Maculabatis pastinacoides. The IUCN Red List of Threatened Species 2016: e.T161540A104190354. https://dx.doi.org/10.2305/IUCN.UK.2016-3.RLTS.T161540A104190354.en. Accessed on 27 April 2024.
  • Compagno, L.J.V., 1999. Checklist of living elasmobranchs. p. 471-498. In W.C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Maryland.


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