Polyschides xavante   Caetano & Absalão, 2005

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

Scaphopoda | Gadilida | Gadilidae

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

Benthic; depth range 10 - 15 m (Ref. 3442).  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Atlantic: Colombia, Brazil and north coast of South America.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 0.6 cm SHL male/unsexed; (Ref. 3442); common length : 5.5 cm SHL male/unsexed; (Ref. 3442)

Short description Morphology

Shell is small, slender, moderately curved, strong and white. Increase in shell diameter is very slight with no conspicuous swelling. Greatest diameter located near the anterior aperture. Apical shell nearly circular, cut by four deep notches, forming four triangular lobes: lobe on convex side is slightly longer, lobe on concave side truncated and two lateral lobe. External surface appears smooth under optical microscope but papillated at higher magnifications. Anterior aperture subcircular, slightly depressed and oblique.

Biology     Glossary (e.g. epibenthic)

Depth range based on type locality (Ref. 3442); to be replaced with a better reference.

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

Members of the class Scaphopoda are gonochoric. Fertilization occurs in the mantle cavity. Life cycle: Eggs hatch into free-swimming lecithotrophic trochophore larvae, succeeded by shelled veligers.

Main reference References | Coordinator | Collaborators

Caetano, C.H.S. and R.S. Absalao. 2005. (Ref. 3442)

IUCN Red List Status (Ref. 130435)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

Human uses


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Reproduction
Maturity
Spawning
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Length-weight
Length-length
Morphology
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References
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Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(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

Vulnerability (Ref. 71543): Low vulnerability (10 of 100).