Clymenura

A Vulnerable genera from the “Annelids” group, mostly found in Sandy Gravel

Sandy Gravel

Vulnerable

Annelids

Genera Characteristics Recorded Traits Possible Values
Size in cm
  • 1-10 cm
  • <1 cm
  • 1-10 cm
  • 11-20 cm
  • >20 cm
Genera Characteristics Recorded Traits Possible Values
Motility (Adult)
  • Short Range Mobility
  • Adult
  • Short Range Mobility
  • Sedentary

“Short Range Mobility”

Motility (Larval)
  • Short Term Planktonic
  • Long Term Planktonic
  • Short Term Planktonic
  • Brooded or Laid Eggs

“Short Term Planktonic”

Lifespan
  • <1 year (Estimated)
  • >10 years
  • 3-10 years
  • 1-2 years
  • <1 year

estimated

Maturity
  • <1 year (Estimated)
  • >4 years
  • 3-4 years
  • 1-2 years
  • <1 year

estimated

Fecundity
  • 100 - 1000 (Estimated)
  • 1 - 10
  • 10 - 100
  • 100 - 1000
  • 1000 - 10000
  • 10000 - 1 million
  • > 1 million

estimated

Image: Clymenura © MES

Vulnerability

Clymenura is a genus of burrowing polychaete worms belonging to the family Maldanidae (bamboo worms). It reaches a body length of only 1-2cm & is a free-living genus found in sands & sandy gravels. It is likely to be vulnerable both to disturbance by dredging & to deposition of material mobilised during the dredging process.

 

Recoverability

There is little information on the life-span, reproductive season or fecundity of this genus. Breeding is annual, & yolk-filled eggs are fertilised externally in the water column. The duration of the larval phase is unknown, but the dispersal potential is considered to be relatively low at distances up to 1km from the site of release.

 

References

  • Biology

  • Distribution

    • Carson & Hentschel, 2006
    • Carson & Hentschel, 2006
  • Reproduction

    • Carson & Hentschel, 2006
    • Carson & Hentschel, 2006
    • Giangrande, 1997
    • Rouse & Pleijel, 2001
    • Rouse & Pleijel, 2001
    • Wilson, 1991