Euceramus

Stimpson, 1860

Species Guides

Euceramus praelongus

Euceramus is a of porcelain crabs ( Porcellanidae) described by Stimpson in 1860. At least one , E. transversilineatus, has been documented as a commensal endosymbiont living within the mantle lobe of marine gastropods, specifically the Pacific crown conch Melongena patula in the Gulf of California. The genus belongs to the diverse anomuran crab radiation, characterized by a compressed body form adapted for inhabiting tight spaces.

Euceramus praelongus (I0741) (14264448778) by Smithsonian Environmental Research Center. Used under a CC BY 2.0 license.

Pronunciation

How to pronounce Euceramus: //juːˈsɛɹəməs//

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Images

Habitat

Marine coastal environments; at least one inhabits the mantle cavity of gastropod in shallow lagoon systems.

Distribution

Southeastern Gulf of California, Mexico (documented for E. transversilineatus in Navachiste Lagoon, Sinaloa); broader distribution of unknown.

Host Associations

Melongena patula - commensal endosymbiontLives in mantle lobe; 86.6% of sampled snails hosted at least one crab

Behavior

Commensal endosymbiosis with gastropod ; often found in pairs (heterosexual or same-sex) within single host individual.

Ecological Role

Commensal endosymbiont of marine gastropods; structure suggests polygamous, promiscuous mating system.

More Details

Reproductive biology

In E. transversilineatus, sexual proportion was observed at 2 males:1 female; four of six collected females were gravid. distribution indicates polygamous mating with promiscuous patterns.

Data limitations

Most detailed information available only for E. transversilineatus; -level traits cannot be confidently extrapolated without additional -level studies.