Marianne Nyegaard

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Marianne Nyegaard
NationalityDanish
Alma materMurdoch University
OccupationMarine biologist
Known forIdentifying Mola tecta

Marianne Nyegaard is a Danish marine biologist who specializes in the study of ocean sunfish. She is known for identifying the ocean sunfish species Mola tecta.

Career[edit]

Marianne Nyegaard is a PhD student pursuing Environmental Science in Australia at Murdoch University School of Veterinary and Life Sciences. During her time here, Nyegaard has led a team of researchers in analyzing ocean sunfish DNA in Indonesia, Australia, and New Zealand. While analyzing skin samples in 2013, she identified an undocumented species, now known as Mola tecta, or the hoodwinker sunfish. As part of her PhD research, she analyzed more than 150 DNA samples of sunfish DNA, and the genetic sequencing turned up four distinct species, one of which never before discovered. She spent the next four years working with other researchers in the Indo-pacific region to identify and describe Mola tecta.[1][2] This research in identifying the species determined that they are roughly 50cm to 2.5m in size, and unlike other species they do not develop lumps on their bodies as they grow. Most distinctly, their back fin is separated into an upper and lower part. Nyegaard has continued to help identify specimens of M. tecta throughout the Southern Hemisphere in New Zealand, Australia, Chile, South Africa, the Santa Barbara Channel, and the west coast of Canada.[1][3][4][5]

While working at the Auckland War Memorial Museum in New Zealand, Nyegaard led the effort to identify for the first time the larvae of Mola alexandrini.[6]

Selected publications[edit]

  • Nyegaard, Marianne; Sawai, Etsuro; Gemmell, Neil; Gillum, Joanne; Loneragan, Neil R; Yamanoue, Yusuke; Stewart, Andrew L. Hiding in broad daylight: molecular and morphological data reveal a new ocean sunfish species (Tetraodontiformes: Molidae) that has eluded recognition. Zoological Journal of the Linnean Society. Mar2018, Vol. 182 Issue 3, p631-658.[7]
  • Nyegaard, M. and Sawai, E. Species identification of sunfish specimens (Genera Mola and Masturus, Family Molidae) from Australian and New Zealand natural history museum collections and other local sources. Data in Brief, 2018, 19, pp. 2404–2415.[8]
  • Sawai, E., Yamanoue, Y., Nyegaard, M. and Sakai, Y. Redescription of the bump-head sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with designation of a neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae). Ichthyological Research, 65 (1). pp. 142–160.[9]
  • Sawai, Etsuro; Nyegaard, Marianne. A review of giants: Examining the species identities of the world's heaviest extant bony fishes (ocean sunfishes, family Molidae) Journal of Fish Biology. June, 2022, Vol. 100 Issue 6, p1345.[10]

References[edit]

  1. ^ a b Lang, Hannah (2017-07-20). "Massive Two-Ton Ocean Sunfish Species Discovered". National Geographic. Archived from the original on June 28, 2022. Retrieved 2022-09-01.
  2. ^ Nyegaard, Marianne. "The four-year treasure hunt for the hoodwinker sunfish". The Conversation. Retrieved 2022-09-01.
  3. ^ Lyons, Kate (2019-03-04). "Holy mola: huge sunfish washes up in northern waters for first time in 130 years". the Guardian. Retrieved 2022-09-01.
  4. ^ Yamamura, Jean (2019-02-27). "Holy Mola Tecta!". The Santa Barbara Independent. Retrieved 2022-09-01.
  5. ^ Prévost-Manuel, Jade (February 2, 2021). "Meet the hoodwinker, the ocean sunfish we misidentified for years". CBC. Retrieved August 31, 2022.
  6. ^ Junn, Jihee (2020-07-22). "From tiny larvae to giant beasts: An Auckland scientist's sunfish breakthrough". The Spinoff. Retrieved 2022-09-01.
  7. ^ Nyegaard, Marianne; Sawai, Etsuro; Gemmell, Neil; Gillum, Joanne; Loneragan, Neil R; Yamanoue, Yusuke; Stewart, Andrew L (2018-03-17). "Hiding in broad daylight: molecular and morphological data reveal a new ocean sunfish species (Tetraodontiformes: Molidae) that has eluded recognition". Zoological Journal of the Linnean Society. 182 (3): 631–658. doi:10.1093/zoolinnean/zlx040. ISSN 0024-4082.
  8. ^ Nyegaard, Marianne; Sawai, Etsuro (2018). "Species identification of sunfish specimens (Genera Mola and Masturus, Family Molidae) from Australian and New Zealand natural history museum collections and other local sources". Data in Brief. 19: 2404–2415. doi:10.1016/j.dib.2018.07.015. PMC 6141500. PMID 30229113.
  9. ^ Sawai, Etsuro; Yamanoue, Yusuke; Nyegaard, Marianne; Sakai, Yoichi (2018-01-01). "Redescription of the bump-head sunfish Mola alexandrini (Ranzani 1839), senior synonym of Mola ramsayi (Giglioli 1883), with designation of a neotype for Mola mola (Linnaeus 1758) (Tetraodontiformes: Molidae)". Ichthyological Research. 65 (1): 142–160. doi:10.1007/s10228-017-0603-6. ISSN 1616-3915. S2CID 254171547.
  10. ^ Sawai, Etsuro; Nyegaard, Marianne (June 2022). "A review of giants: Examining the species identities of the world's heaviest extant bony fishes (ocean sunfishes, family Molidae )". Journal of Fish Biology. 100 (6): 1345–1364. doi:10.1111/jfb.15039. ISSN 0022-1112. PMID 35289924. S2CID 247452132.


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