Scaphopoda |
Gadilida |
Gadilidae
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; djupintervall 10 - 15 m (Ref. 3442). Tropical
Distribution
Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar
Western Atlantic: Colombia, Brazil and north coast of South America.
Length at first maturity / Size / Weight / Age
Könsmognad: Lm ? range ? - ? cm Max length : 0.6 cm SHL hane/ej könsbestämd; (Ref. 3442); common length : 5.5 cm SHL hane/ej könsbestämd; (Ref. 3442)
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.
Depth range based on type locality (Ref. 3442); to be replaced with a better reference.
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | 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.
Caetano, C.H.S. and R.S. Absalao 2005 A nrw species of the genusPolyschides Pilsbry and Sharp, 1898 (Mollusca, Scaphopoda, Gadilidae) from Brazilian waters. Zootaxa 871:1-10. (Ref. 3442)
IUCN Red List Status
(Ref. 130435: Version 2025-1)
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Harmless
Human uses
| FishSource |
Verktyg
Ytterligare information
Trophic EcologyFood items (preys)
Födosammansättning
Födointag
Predatorer
Population dynamicsTillväxt
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundans
PhysiologySyreförbrukning
Human RelatedStamps, coins, misc.
Internet-källor
Estimates based on models
Fishing Vulnerability
Low vulnerability (10 of 100).
