Mediterranean grenadier explained

The Mediterranean grenadier (Coryphaenoides mediterraneus) is a species of deep-sea fish in the family Macrouridae.[1] [2] [3]

Description

The Mediterranean grenadier has a measurement of up to .[4] The head is scaled except for its gular and branchiostegal membranes; it has a blunt snout.[5] [6] Its brain shows increased volume in the octavolateral area (premotor organization of body movements) and gustatory area (taste); this is unsurprising as it lives in near-total darkness and is dependent on chemosensory inputs to find prey.[7]

Habitat

The Mediterranean grenadier lives in the North Atlantic Ocean, Mediterranean Sea and Gulf of Mexico; it is bathydemersal, living at depths of .[4] [8] [9] During 2008–2011 baited cameras were deployed over a depth range of 532–5111 m in the Ionian Sea to characterize the large mobile fauna. At depths greater than 3000 m, including Calypso Deep, the deepest point in the Mediterranean, the Mediterranean grenadier was observed, the only one fish species found, extending this species’ maximum recorded depth to 5111 m. [10]

Behaviour

The Mediterranean grenadier feeds on small benthic invertebrates.[4] They exhibit a cycle of daily activity, because the solar cycle influences the movement of pelagic prey who move vertically during the day.[11] They are parasitised by many species of cestode worms.[12]

Notes and References

  1. Book: Deep-Sea Ecosystems Off Mauritania: Research of Marine Biodiversity and Habitats in the Northwest African Margin. Ana. Ramos. Fran. Ramil. José Luis. Sanz. September 25, 2017. Springer. 9789402410235. Google Books.
  2. Book: The Senses of Fish: Adaptations for the Reception of Natural Stimuli. Gerhard von der. Emde. Joachim. Mogdans. B. G.. Kapoor. December 6, 2012. Springer Science & Business Media. 9789400710603. Google Books.
  3. Book: The Mediterranean Sea: Its history and present challenges. Stefano. Goffredo. Zvy. Dubinsky. September 9, 2013. Springer Science & Business Media. 9789400767041. Google Books.
  4. Web site: Coryphaenoides mediterraneus, Mediterranean grenadier. fishbase.mnhn.fr.
  5. Web site: Mediterranean grenadier - Coryphaenoides mediterraneus - (Giglioli, 1893). eunis.eea.europa.eu.
  6. Book: McEachran, John. Fishes of the Gulf of Mexico, Vol. 1: Myxiniformes to Gasterosteiformes. October 28, 2010. University of Texas Press. 9780292793231. Google Books.
  7. Book: Reutter, Klaus. Fish Chemosenses. January 8, 2005. CRC Press. 9781482294392. Google Books.
  8. Book: McIntyre, Alasdair. Life in the World's Oceans: Diversity, Distribution, and Abundance. November 18, 2010. John Wiley & Sons. 9781444396201. Google Books.
  9. Web site: Coryphaenoides mediterraneus (Giglioli, 1893). www.gbif.org.
  10. Linley, Thomas & Craig, Jessica & Jamieson, Alan & Priede, Imants. (2018). Bathyal and abyssal demersal bait-attending fauna of the Eastern Mediterranean Sea. Marine Biology. 165. 159. 10.1007/s00227-018-3413-0.
  11. Book: Fish Behavior 1: Eco-ethology. Jacques. Bruslé. Jean-Pierre. Quignard. March 31, 2020. John Wiley & Sons. 9781119721895. Google Books.
  12. Book: Pandian, T. J.. Reproduction and Development in Platyhelminthes. January 28, 2020. CRC Press. 9781000054880. Google Books.

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