Tivela stultorum   (Mawe, 1823)

Pismo clam

Native range | All suitable habitat | Point map | Year 2100
This map was computer-generated and has not yet been reviewed.
Tivela stultorum   AquaMaps   Data sources: GBIF OBIS
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Tivela stultorum
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Veneroida | Veneridae

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

Benthic; depth range 7 - 150 m (Ref. 101604), usually 10 - 25 m (Ref. 101635).  Tropical; 38°N - 18°N, 123°W - 109°W

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Eastern Pacific: Socorro Island, Mexico to Santa Cruz, California, USA.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 2 - 3.1 cm Max length : 15.0 cm SHL male/unsexed; (Ref. 101635)

Short description Morphology

The shell is strong, heavy, and generally smooth though sculptured with fine concentric growth lines; beak nearly central; ligament obvious, elongate, set in deep groove; periostracum shiny, greenish to brownish; shell pale buff to dark chocolate, occasionally marked with brown or purple-brown bands.

Biology     Glossary (e.g. epibenthic)

Maximum depth from Ref. 101605. Filter-feeder, feeds on phyto- and zooplankton, bacteria and detritus. Its predators may include crabs, snails, gulls, sea otters, sharks, rays and some fishes (Ref. 101635). Gametogenesis begins in March or April and ripe gametes first appear in April and May. Gonadal development proceeds rapidly in June and July; spawning begins in late July or early August and continues to the end of November. Discharge of gametes appears to take place when there is a fair rise in water temperature. Males usually spawn first and their release of gametes stimulates the females to spawn. Spawning may occur several times during the season since only a portion of the gametes ripen at one time. (Ref. 101635).

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

Gametogenesis begins in March or April and ripe gametes first appear in April and May. Gonadal development proceeds rapidly in June and July; spawning begins in late July or early August and continues to the end of November. Discharge of gametes appears to take place when there is a fair rise in water temperature. Males usually spawn first and their release of gametes stimulates the females to spawn. Spawning may occur several times during the season since only a portion of the gametes ripen at one time. (Ref. 101635).

Main reference References | Coordinator | Collaborators

Vakily, J.M. 1992. (Ref. 7693)

IUCN Red List Status (Ref. 115185)

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
| FishSource |

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | GenBank (genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | ispecies | PubMed | Scirus | Tree of Life | uBio | uBio RSS | Wikipedia (Go, Search) | Zoological Record

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 13.7 - 23.2, mean 20.7 (based on 16 cells).
Vulnerability (Ref. 71543)
Moderate vulnerability (43 of 100)
Price category (Ref. 80766)
Medium