Woolly sculpin

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Woolly sculpin
Clinocottus analis20210628.jpg
Woolly sculpin (Clinocottus analis) Pillar Point Bluffs, Beach and Reef, California
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Cottidae
Genus: Clinocottus
Species:
C. analis
Binomial name
Clinocottus analis
(Girard, 1858)
Synonyms [1]
  • Oligocottus analisGirard, 1858

The woolly sculpin (Clinocottus analis) is a species of ray-finned marine fish belonging to the family Cottidae, or the typical sculpins. It is found in the eastern Pacific Ocean, where it occurs along the coastline of California south to Baja California. [2]

Contents

Taxonomy

Clinocottus analis was first, formally, described as Oligocottus analis in 1858 by the French ichthyologist Charles Frédéric Girard, its type locality being given as Monterey, California. [3] The genus Clinocottus has been resolved as paraphyletic or polyphyletic by some, believing this species to not be closely related to the others included in the same genus. [4] This species is the only species subgenus Clinocottus which was proposed as a genus by Theodore Gill in 1861. [5] The specific name, analis, refers to the anus, an allusion Girard did not explain, although he did describe this species as having the origin of the anal fin placed behind forward edge of the second dorsal fin. In 1898 it was suggested by David Starr Jordan and Barton Warren Evermann that the name referred to the "large anal papilla", but Girard did not mention this. [6]

Description

This fish reaches up to 18 centimeters in length. [1] Their characteristic elongated and speckled body ends with a large wide and flattened head. [7] Their eyes are found on the top of their head perpendicular to their large mouth aligned with many teeth. [7] They are scaleless, instead, they have gills covering their large spine ending in a pair of sharp spines. [7] They have dorsal, anal and caudal fins, each with 12 to 15 rays. [7] The caudal fin is rounded and darker than the rest of their body. [7]

Baja California, Mexico Peninsula de Baja California Mapa.svg
Baja California, Mexico

Ecology and metabolism

This species lives on the seabed of intertidal waters up to 18 meters deep. [1] It is commonly found in tide pools amidst algaes, but it leaves the tide pool area at will. [1] It can breathe air and has been known to survive out of water for up to 24 hours. [8]

Habitat

They are commonly found near the sand, small rocks and bedrock, specially in intertidal areas at near 19 m. [7] They are found in water temperature ranges between 6 °C and 22 °C. [7] They are able to survive rapid temperature fluctuations and rapid changes in salinity. [7]

Predators

In the United States it is preyed upon by the great blue heron (Ardea herodias), snowy egret (Egretta thula) and the willet (Tringa semipalmata). [9]

Feeding

The diet of this species includes mainly crustaceans, especially amphipods, as well as fish eggs and larvae, polychaetes, and molluscs. [7] Most of its food items are light-colored or clear, suggesting that these are easiest for the fish to see against the dark background of its habitat.

Reproduction

Their reproduction is oviparous with internal fertilization and spawning occurs in shallow coastal waters. Each female lays several batches of 50 to 1,300 eggs multiple times per year. [7] These have a size ranging between 12 and 25 mm, settling the larvae in the tide-pools. In a few months, they mature to a length of 50–60 mm in total. [10]

Behavior

They are non-migratory species. [7] They can camouflage themselves due to their subtle changes in body color. [7] Their mottled specks are green, greenish-black, greenish-brown and reddish covering their body as well as their fins. [7] The fins are also colored according to their body color patterned with light thin bands. [7]

Supplementary information

Biliverdin chemical molecule Biliverdin3.svg
Biliverdin chemical molecule

They are harmless to humans. [11]

The population dynamics of Clinocottus analis is highly seasonal. In general, growth and fertility peak from early spring to summer. However, survival is not seasonal. [10]

This fish has green blood plasma, the color caused by biliverdin tightly bound in protein complexes. [7]

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References

  1. 1 2 3 4 Froese, Rainer; Pauly, Daniel (eds.). "Clinocottus analis". FishBase . August 2022 version.
  2. ↑ "Sculpin" (PDF). Wildlife Express. 31 (3). November 2017.
  3. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Species in the genus Clinocottus". Catalog of Fishes . California Academy of Sciences . Retrieved 29 January 2023.
  4. ↑ Matthew L. Knope (2013). "Phylogenetics of the marine sculpins (Teleostei: Cottidae) of the North American Pacific Coast". Molecular Phylogenetics and Evolution. 66 (1): 341–349. Bibcode:2013MolPE..66..341K. doi:10.1016/j.ympev.2012.10.008. PMID   23099148.
  5. ↑ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Oligocottinae". Catalog of Fishes . California Academy of Sciences . Retrieved 29 January 2023.
  6. ↑ Christopher Scharpf & Kenneth J. Lazara, eds. (22 October 2022). "Order Perciformes: Suborder Cottoidea: Infraorder Cottales: Family Cottidae (Sculpins)". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 29 January 2023.
  7. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 "Woolly Sculpin". Mexico - Fish, Birds, Crabs, Marine Life, Shells and Terrestrial Life. 2017-02-08. Retrieved 2022-11-25.
  8. ↑ Martin, K. L. (1991). Facultative aerial respiration in an intertidal sculpin, Clinocottus analis (Scorpaeniformes: Cottidae). Physiological Zoology 64(5) 1341-55.
  9. ↑ "Predators - Clinocottus analis". fishbase.mnhn.fr. Retrieved 2022-11-25.
  10. 1 2 Davis, Jld; Levin, La (2002). "Importance of pre-recruitment life-history stages to population dynamics of the woolly sculpin Clinocottus analis". Marine Ecology Progress Series. 234: 229–246. Bibcode:2002MEPS..234..229D. doi: 10.3354/meps234229 . ISSN   0171-8630.
  11. ↑ "Clinocottus analis, Woolly sculpin". www.fishbase.de. Retrieved 2022-11-25.

Further reading

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