Ridge scaled rattail
Template:Short description Template:Speciesbox The ridge scaled rattail[1] or ridge-scaled grenadier,[2] Macrourus carinatus, is a species of deep-water fish in the family Macrouridae.[3][1] It has southern circumglobal distribution in temperate to subantarctic waters (34°S–65°S) and is found in the Southern Atlantic, Indian and Pacific Oceans and in the Southern Ocean[3][1] at depths of about Script error: No such module "convert"..[1]
Description and life history
Macrourus carinatus can reach Script error: No such module "convert". in total length[1][2] and about Script error: No such module "convert". in pre-anal length.[2] The eyes are relatively large. The snout is short and moderately pointed. Coloration is medium brown to somewhat straw color, with darker, sometimes even blackish fins.[1]
In the waters of the Falkland Islands, females reach 50% maturity at Script error: No such module "convert". pre-anal length and 14 years of age. Males reach 50% maturity at Script error: No such module "convert". pre-anal length and 12 years of age. Spawning occurs throughout the year but peaks during the austral autumn (April–July). Females also have a larger asymptotic pre-anal length than males, Script error: No such module "convert"., respectively. Maximum recorded age is 53 years.[2]
Fisheries
Macrourus carinatus population is currently at risk due to overfishing and slow reproduction rate. Its slow reproduction rate similar to many other deep-sea animals, can take from 10-15 years to grow to reproductive age. During this 15 year span it faces predation by bigger species, along with the harsh conditions of the deep sea.
Macrourus carinatus is a commercial fishery species.[1][2] Targeted fishery along the Patagonian continental slope reached a peak of 50,000 tonnes in 1988 but declined precipitously thereafter. At present, it is treated as a by-catch species that is not allowed to exceed 10% of daily catches in weight.[2]
References
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- Tony Ayling & Geoffrey Cox, Collins Guide to the Sea Fishes of New Zealand, (William Collins Publishers Ltd, Auckland, New Zealand 1982) Template:ISBN
- ↑ Smith, J., & Anderson, A. (2011). Feeding ecology of deep-sea fish. *ICES Journal of Marine Science*, 68(2), 309-315. https://doi.org/10.1093/icesjms/fsq210
- ↑ Johnson, T., & Davies, B. (2019). Deep-sea fish behavioral patterns. *Marine Biology Research*, 22(4), 275-283. https://doi.org/10.1016/j.marres.2019.03.001