Navicula

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Navicula
Navicula bullata - Haeckel.jpg
Navicula bullata
Scientific classification
(unranked): SAR
Superphylum: Heterokonta
Class: Bacillariophyceae
Order: Naviculales
Family: Naviculaceae
Genus: Navicula
Bory de Saint-Vincent, 1822
Type species
Navicula tripunctata
Species

Navicula is a genus of boat-shaped diatom algae, comprising over 1,200 species.[1] Navicula is Latin for "small ship", and also a term in English for a boat-shaped incense-holder.[2]

Diatoms — eukaryotic, primarily aquatic, single-celled photosynthetic organisms — play an important role in global ecology, producing about a quarter of all the oxygen within Earth's biosphere, often serving as foundational organisms, or keystone species in the food chain of many environments where they provide a staple for the diets of many aquatic species.

Mobility[edit]

Navicula diatoms are known for their ability to creep about on each other and on hard surfaces such as microscope slides.[3][4][5][6] It is thought that around the outside of the navicula's shell is a girdle of protoplasm that can flow and thus act as a tank track.

See also[edit]

Notes[edit]

  1. ^ "M.D. Guiry in Guiry, M.D. & Guiry, G.M. 2015. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 15 August 2015." Retrieved 2015-08-15. 
  2. ^ Oxford English Dictionary, "Navicula. 3"
  3. ^ [1] Youtube video
  4. ^ Gupta, S; Agrawal, SC. "Survival and motility of diatoms Navicula grimmei and Nitzschia palea affected by some physical and chemical factors". Folia Microbiol (Praha). 52: 127–34. doi:10.1007/BF02932151. PMID 17575911. 
  5. ^ J Microbiol Methods. 2013 Mar;92(3):349-54. doi: 10.1016/j.mimet.2013.01.006. Epub 2013 Jan 18. Semi-circular microgrooves to observe active movements of individual Navicula pavillardii cells. Umemura K1, Haneda T, Tanabe M, Suzuki A, Kumashiro Y, Itoga K, Okano T, Mayama S.
  6. ^ [2] M.A. Harper & J.F. Harper (1967) Measurements of diatom adhesion and their relationship with movement, British Phycological Bulletin, 3:2, 195-207, doi:10.1080/00071616700650051

External links[edit]

WoRMS. "Navicula". World Register of Marine Species.