Mesoplodon ginkgodens   Nishiwaki and Kamiya,  1958 (Whale)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Mammalia
Order:Cetartiodactyla
Family:Ziphiidae

Image copyrights: FAO

Description
Size: Maximum known sizes are 4.9 m (females) and 4.8 m (males). At birth, they are thought to be about 2 to 2.5 m.


Adult male ginkgo-toothed beaked whales are dark grey, with light spots; females are apparently lighter. They do not appear to be as heavily scarred as most other mesoplodonts. The throat grooves, dorsal fin, and tail flukes are typical for Mesoplodon species.
Bulls have flattened tusks that barely break the gumline, slightly behind the middle of the lower jaw; erupted teeth are absent in females.

Can be confused with: The uniform dark pigmentation, small posteriorly placed teeth, and paucity of characteristic ziphiid scars may allow a tentative classification of adult male ginkgo-toothed beaked whales. Otherwise, this species will be virtually indistinguishable from other species of Mesoplodon.


Synonym (s)
Mesoplodon buden Nishiwaki, 1957
(Misidentification)
Mesoplodon densirostris Ogawa, 1938
(Misidentification)
Mesoplodon hotaula Deraniyagala, 1963

Common Name (s)
• Japanese Beaked Whale
• Ginkgo-toothed Beaked Whale (English)
Economic Importance and Threats
Threats:  Anthropogenic
(Accidentally caught in deepwater drift gillnets or they are highly venerable to loud anthropogenic sound. Also their death take place due to swallowing of discarded plastic materials. )

Ecology
Habitat:  Open Sea
IUCN Status:  Data Deficient

Biogeography


• Tamil Nadu, Gulf of Mannar INDIA
• INDIA

Literature Source(s)
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at - http://tnenvis.nic.in
  • Dr. Ramesh, R; Dr. Nammalwar, P and Dr. Gowri, VS (2008) Database on coastal information of Tamil Nadu Report Submitted to Environmental Information System (ENVIS) Centre, Department of Environment, Government of Tamil Nadu Institute for Ocean Management, Anna University, Chennai, Tamil Nadu. Available at - http://tnenvis.nic.in/PDF/coastal%20data.pdf
  • Sealifebase Available at - http://www.sealifebase.org/
  • Pillai, PKM and Augustine, SK (2000) A code list of common marine living resources of the Indian seas CMFRI Special Publication No.12 CMFRI 1-115 Available at - eprints.cmfri.org.in/3975/1/Special_Publication_No_12_Revised.pdf
  • Padmanaban P and Dinesh K.P (2011) A checklist of Marine Mammals of India Marine Biology Reginal centre, Zoological Survey of India 4pp Available at - http://zsi.gov.in/checklist/Marine%20mammals%20of%20India.pdf
  • Jefferson, TA; Leatherwood, S and Webber, MA (2006) Marine mammals of the world World biodiversity database Available at - http://nlbif.eti.uva.nl/bis/marine_mammals.php?menuentry=inleiding

Page last updated on:2012-11-07

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