Lepidonotus

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)
  • Long Term Planktonic
  • Long Term Planktonic
  • Short Term Planktonic
  • Brooded or Laid Eggs

“Long Term Planktonic”

Lifespan
  • 1-2 years (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: Lepidonotus © MES

Vulnerability

Lepidonotus is a small-medium sized polychaete worm belonging to the family Polynoidae (Scale worms). It is 2-5cm in length & lives on the surface & under stones & shells where it feeds on small invertebrates & micro-algae. It has limited mobility & is likely to be vulnerable to the effects of dredging & sediment mobilised during the dredging process.

 

Recoverability

There is little information on the life-span of Lepidonotus. Reproduction is from May-August & after external fertilisation, the eggs develop into a planktonic larva. There is a likelihood of relatively widespread dispersal, but there is insufficient information to assess the recoverability of this genus.

 

References

  • Biology

    • Fish & Fish, 1996
    • Rouse & Pleijel, 2001
    • Rouse & Pleijel, 2001
  • Taxonomy

    • Howson & Picton, 1997
  • Distribution

    • Hayward & Ryland, 1995b
    • Hayward et al., 1996
  • Reproduction

    • Fish & Fish, 1996
    • Rouse & Pleijel, 2001
    • Rouse & Pleijel, 2001
    • Thorson, 1946
    • Thorson, 1946