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Teredo navalis   Linnaeus, 1758

Naval shipworm

Native range | All suitable habitat | Point map | Year 2100
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Teredo navalis  AquaMaps  Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Bivalvia | Myida | Teredinidae

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

Benthic; brackish; depth range 0 - 150 m (Ref. 76971), usually 0 - 20 m (Ref. 75831).  Temperate; 11°C - 25°C (Ref. 98650); 18°N - 66°N, 24°W - 141°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Northeast Atlantic. Introduced to the Baltic Sea, the Mediterranean and the Eastern Pacific Ocean. Temperate to tropical.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 50.0 cm TL male/unsexed; (Ref. 76971)

Short description Morphology

Body reddish and with a characteristic elongate worm-like shape. Anterior part covered by a small (up to 2 cm long) reduced helmet-like shell consisting of two triangular-shaped parts (anterior and posterior lobes similar), which is white with light brown periostracum (outermost layer). This shell acts as a wood-boring instrument. The brownish soft worm-like body lies in a calcareous tube up to 60 cm long and 1 cm in diameter.

Biology     Glossary (e.g. epibenthic)

Inhabits wooden material (logs, pilings, ships, other submerged wooden constructions) from temperate to tropical zones (Ref. 76974). Salinity tolerance: 5-35 parts per mille (Ref. 78117). Considered a pest and an invasive species as it destroys submerged wood (Ref. 76971). Found in intertidal areas in timber (Ref. 75831). Wood borer (Ref. 104365).

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

Female phase: 8-10 weeks after larval stage; females larviparous, i.e., deposits living larvae instead of eggs; fertilized eggs develop through half of the larval period in the maternal gill chambers. Primary male phase: after 4-6 weeks of larval stage in warm temperatures, up to 6 months in colder temperatures with total length range 2-3 cm and 0.2 body diameter (Ref. 78112). It displays poecilogonony as its reproductive strategy (Ref. 99837).

Main reference References | Coordinator | Collaborators

Harms, J. 1993. (Ref. 2711)

IUCN Red List Status (Ref. 124695)

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Potential pest

Human uses

Fisheries: of no interest
| FishSource |


More information

Common names
Egg development

Internet sources

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

Estimates of some properties based on models

Preferred temperature (Ref. 115969): 8.1 - 20.2, mean 10.9 (based on 964 cells).
Vulnerability (Ref. 71543)
Moderate vulnerability (40 of 100)
Price category (Ref. 80766)