Durvillaea willana

Last updated

Durvillaea willana
Watson-Willana1.jpg
D. willana at Watsons Beach, Otago, with the epiphyte Pyrophyllon subtumens growing on the middle plant .
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Clade: Sar
Clade: Stramenopiles
Phylum: Ochrophyta
Class: Phaeophyceae
Order: Fucales
Family: Durvillaeaceae
Genus: Durvillaea
Species:
D. willana
Binomial name
Durvillaea willana
Lindauer, 1949 [1]

Durvillaea willana is a large species of southern bull kelp endemic to New Zealand. [1] [2] [3] [4]

Contents

Description

This species is chocolate brown in colour and is darker than all other bull kelp species. [4] [5] It has a branched stipe. [3] The species is non-buoyant and does not have 'honeycomb' in its fronds. [3] [4] The holdfast becomes large and spreads like a plate on rocky substrates. [6]

This species is superficially similar in appearance to Durvillaea antarctica . [6] However, D. willana has smaller blades than D. antarctica and is usually found lower on the shoreline because its lower tolerance of wave action compared to D. antarctica. [6] It also has a branched stipe and does not have buoyant fronds, unlike D. antarctica. [3]

Etymology

The species epithet, willana, honours Eileen Alice Willa who collected many algal species for Lindauer. [1]

Distribution

This species of kelp is endemic to New Zealand and is found on the southeastern shores of the North Island, although not in Cook Strait, as well as on the shores of the South Island and Stewart Island. [1] [2] [3] [4] [7] [8]

Gaps in the geographic range of the species may have been caused by earthquake uplift events such as the 1855 Wairarapa earthquake. [4] However, historic uplift (800 – 1400 years before present) in the Akatore fault zone does not seem to have caused any long term disruption in the genetic diversity of D. willana, in that region. [8] This result suggests that the subtidal D. willana may not die-off completely due to earthquake uplift events. [8]

References

  1. 1 2 3 4 Lindauer, V.W. (1949). "Notes on marine algae of New Zealand. I". Pacific Science. 3: 340–352.
  2. 1 2 Fraser, C.I.; Winter, D.J.; Spencer, H.G.; Waters, J.M. (2010). "Multigene phylogeny of the southern bull-kelp genus Durvillaea (Phaeophyceae: Fucales)". Molecular Phylogenetics and Evolution. 57 (3): 1301–11. doi:10.1016/j.ympev.2010.10.011. PMID   20971197.
  3. 1 2 3 4 5 Fraser, Ceridwen I.; Velásquez, Marcel; Nelson, Wendy A.; Macaya, Erasmo C.A.; Hay, Cameron (2019). "The biogeographic importance of buoyancy in macroalgae: a case study of the southern bull‐kelp genus Durvillaea (Phaeophyceae), including descriptions of two new species". Journal of Phycology. 56 (1): 23–36. doi: 10.1111/jpy.12939 . PMID   31642057.
  4. 1 2 3 4 5 Hay, Cameron H. (2019). "Seashore uplift and the distribution of the bull kelp Durvillaea willana Lindauer in New Zealand". New Zealand Journal of Botany. 2019 (2): 94–117. doi:10.1080/0028825X.2019.1679842. S2CID   208593399.
  5. ↑ Carson, Sally Fraser; Morris, Rod (2017). Collins field guide to the New Zealand seashore. Auckland, New Zealand: Harper Collins. p. 357. ISBN   9781775540106. OCLC   1012909625.
  6. 1 2 3 Bradstock, M. C. (1989). Between the tides : New Zealand shore and estuary life (Rev. ed.). Auckland, N.Z.: David Bateman Ltd. ISBN   1869530055. OCLC   154713066.
  7. ↑ Nelson, W.A. (2013). New Zealand seaweeds : an illustrated guide. Wellington, New Zealand: Te Papa Press. p. 70. ISBN   9780987668813. OCLC   841897290.
  8. 1 2 3 Parvizi, Elahe; Fraser, Ceridwen I.; Dutoit, Ludovic; Craw, Dave; Waters, Jonathan M. (2020). "The genomic footprint of coastal earthquake uplift". Proceedings of the Royal Society B. 287 (1930): 20200712. doi: 10.1098/rspb.2020.0712 . PMC   7423469 . PMID   32635859.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.