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Calamus bajonado (Bloch & Schneider, 1801)

Jolthead porgy
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Native range | All suitable habitat | Point map | Year 2050
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Calamus bajonado   AquaMaps   Data sources: GBIF OBIS
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Image of Calamus bajonado (Jolthead porgy)
Calamus bajonado
Picture by Itriago, H.


Bermuda country information

Common names: Blue bone porgy, Jolthead porgy
Occurrence: native
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: no uses
Comments:
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/bd.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Randall, J.E., 1996
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Eupercaria/misc (Various families in series Eupercaria) > Sparidae (Porgies)
Etymology: Calamus: Greek, kalamos = reed, cane (Ref. 45335).
  More on authors: Bloch & Schneider.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 3 - 200 m (Ref. 26938).   Subtropical; 42°N - 18°S, 98°W - 34°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: Rhode Island (USA), Bermuda, and northern Gulf of Mexico southward to Brazil. Most abundant in the West Indies (Ref. 9626).

Length at first maturity / Size / Weight / Age

Maturity: Lm 36.0, range 30 - 42 cm
Max length : 76.0 cm FL male/unsexed; (Ref. 40637); common length : 54.0 cm TL male/unsexed; (Ref. 3815); max. published weight: 10.6 kg (Ref. 4699)

Short description Identification keys | Morphology | Morphometrics

Dorsal spines (total): 12; Dorsal soft rays (total): 12; Anal spines: 3; Anal soft rays: 10. Blue line under each eye. Corner of mouth and isthmus have orange cast (Ref. 26938). An irregular row of small molariform teeth inside and toward the front of the three usual rows of molars at side of upper jaw; dorsal profile of head evenly convex and not very steep (Ref. 13442).

Biology     Glossary (e.g. epibenthic)

Inhabits coastal waters. Found on vegetated sand bottoms and more frequently on coral bottoms. Occasionally found at depths at least 180m (Ref. 09710) and 200 m. (Ref. 26938). Large adults are usually solitary. Feeds mainly on sea urchins, (including Diadema, Ref. 13442), crabs and mollusks. Excellent food fish (Ref. 5521).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p. (Ref. 7251)

IUCN Red List Status (Ref. 130435)

  Least Concern (LC) ; Date assessed: 30 March 2011

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Reports of ciguatera poisoning (Ref. 9710)




Human uses

Fisheries: minor commercial; gamefish: yes
FAO(Publication : search) | FishSource | Sea Around Us

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators
Ecology
Ecology
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduction
Maturities
Fecundities
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Egg(s)
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Distribution
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BRUVS - Videos
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Physiology
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Swimming type
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Visual pigment(s)
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Diseases / Parasites
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Genetics
Genetics
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Estimates based on models

Preferred temperature (Ref. 115969): 18.6 - 27.5, mean 24.3 (based on 261 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5001   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02630 (0.01684 - 0.04108), b=2.92 (2.79 - 3.05), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.5   ±0.2 se; based on diet studies.
Resilience (Ref. 120179):  Medium, minimum population doubling time 1.4 - 4.4 years (tm=3).
Fishing Vulnerability (Ref. 59153):  High vulnerability (59 of 100).
Price category (Ref. 80766):   Medium.