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Eastern shovelnose stingaree

2/4/2018

 
Hello again, #StingareeSunday! TFUI is proud to introduce readers to the Eastern shovelnose stingaree (Trygonoptera imitata), a currently undescribed species that is endemic to south-eastern Australia. Compared to the yellow shovelnose stingaree (T. galba), this is a rather plain-looking animal with grey-brown or yellow colouration on top and a pale underbelly. The dorsal side may sometimes be scattered with spots of varying shades of brown while the underside has a dark margin. They have a long fin on their tail (which is dark in colour) but no dorsal fin. #Finfact: the eastern shovelnose stingaree also has TWO venomous spines.
Picture
An Eastern Shovelnose Stingaree, Trygonoptera imitata, at Queenscliff, Port Phillip, Victoria, December 2016. Source: Sascha Schultz / iNaturalist.org.
Eastern shovelnose stingarees are common to Port Phillip Bay and Western Port Bay, having a preference to the sandy and muddy bottoms in shallow bays, estuaries and inshore coastal waters. They are usually observed at depths of about 5-120 metres, and may occur in deeper waters in South Australia.
 
These stingarees are viviparous with yolk-sac, and litters range from one to five pups. Eastern shovelnose stingarees can get up to 80 cm total length (TL). The IUCN has assessed the eastern shovelnose stingaree as Near Threatened (NT) until studies can show that the population is stable.
 
Interested in learning more about stingarees? We featured a previous stingaree for #StingareeSunday in January! You can read all about the yellow shovelnose stingaree (Trygonoptera galba) here.
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did you know about this animal?

glossary

  • Bay: Water connected to an ocean or lake partially surrounded by land (may also be called a “gulf,” “cove,” “sea,” “sound” or “bight”).
  • Dorsal fin: Fin located on the back.
  • Dorsal side: The top of an animal.
  • Estuary: Where the tide meets the stream (resulting in a mixture of fresh and salt seawater).
  • Endemic: Native to a specific region or environment and not occurring naturally anywhere else.
  • IUCN: International Union for Conservation of Nature.
  • Pups: Baby sharks.
  • Viviparous with yolk-sac: Also known as aplacental viviparous and previously known as ovoviviparous/ovoviviparity; it is the production of eggs that are fertilised and hatch inside the female shark but the embryos lack a placental connection to the oviduct or uterus and so do not feed off the mother.

say hello!

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    Author

    TFUI Founder Melissa C. Marquez is author of all animal bios and "Behind the Fins" segments.
    ​
    A proud #LatinainSTEM, Marquez is a marine biologist who focuses on shark habitat use and movements; she is also a science communicator (follow her on Twitter) who focuses on diverse Chondrichthyan education and who focuses on the media coverage of sharks.
    You can learn more about her on her website.

    SEE MELISSA'S TEDx TALK HERE:

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  • About TFUI
    • TFUI Origins >
      • About TFUI Founder Melissa
      • TFUI Officers
    • Take a Bite
    • Get Involved
    • FAQ
  • Bite Blog
  • Education
    • The Sharks >
      • Shark Anatomy
    • The Skates & Rays
    • The Chimaeras
    • Why Environments Matter
    • The Threats
    • Open Access >
      • Behind the Fins: Interview series
      • Bite into Research
      • Shark Bites: Book Recommendations
      • Sustainable Seafood Apps
  • Fins United
    • Shark Party Ideas
    • Little Fins Nursery
    • Big Fins Reef
  • Contact