Tresus nuttallii, Pacific gaper : fisheries
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Tresus nuttallii   (Conrad, 1837)

Pacific gaper

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Tresus nuttallii  AquaMaps  Data sources: GBIF OBIS
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Image of Tresus nuttallii (Pacific gaper)
Tresus nuttallii
Picture by Coltro, Marcus

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Venerida | Mactridae

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

Benthic; depth range 0 - 50 m (Ref. 95344).  Temperate; 61°N - 22°N, 156°W - 109°W

Distribution Territories | FAO areas | Ecosystems | Occurrences | Introductions

Eastern Pacific: from Alaska to Baja California, Mexico.

Length at first maturity / Size / Weight / Age

Maturity: Lm 6.8  range ? - ? cm Max length : 25.4 cm SHL male/unsexed; (Ref. 95991); max. reported age: 17 years (Ref. 95991)

Biology     Glossary (e.g. epibenthic)

It burrows in sand and mud along the intertidal zone from shallow depths to 30 meters (Ref. 865). Prefers sandier areas. Buries deep in the substrate to avoid freezing (Ref. 95344). Feeds on phytoplankton and detritus (Ref. 95991).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Reproduction occurs throughout the year during spring, peak months on February and April.

Main reference References | Coordinator | Collaborators

Lamb, A., D. Gibbs and C. Gibbs 2011 Strait of Georgia biodiversity in relation to bull kelp abundance. Pacific Fisheries Resource Conservation Council, 111p. (Ref. 93817)

IUCN Red List Status (Ref. 130435: Version 2025-2 (Global))


CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
FAO - Aquaculture Systems: production search; Publication: search | FishSource | Sea Around Us

Tools

More information

Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Territories
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Taxonomy
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO - Aquaculture Systems: production search; Publication: search | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Resilience
(Ref. 69278):
Low, minimum population doubling time 4.5 - 14 years (K=0.12-0.17; tm=3; tmax=17)
Fishing Vulnerability
(Ref. 71543)
Moderate vulnerability (45 of 100).
Price category
(Ref. 80766):
Medium.
Nutrients
Calcium = 149 [71, 228] mg/100g; Iron = 8.53 [1.95, 15.11] mg/100g; Protein = 9.88 [8.64, 11.12] %; Omega3 = 0.313 [0.202, 0.423] g/100g; Selenium = 61 [50, 72] μg/100g; VitaminA = 0 μg/100g; Zinc = 2.04 [0.56, 3.51] mg/100g (wet weight); based on nutrient studies.