Sagartia

A Intermediate genera from the “Other: Cnidaria” group, mostly found in Mud

Mud

Intermediate

Other: Cnidaria

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

“Sedentary”

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

“Long Term Planktonic”

Lifespan
  • >10 years
  • 3-10 years
  • 1-2 years
  • <1 year
Maturity
  • <1 year
  • >4 years
  • 3-4 years
  • 1-2 years
  • <1 year
Fecundity
  • 1 - 10
  • 10 - 100
  • 100 - 1000
  • 1000 - 10000
  • 10000 - 1 million
  • > 1 million

Image: Sagartia © Anne Bennet

Vulnerability

Sagartia is a sea anemone that lives attached to the substratum on rock or on gravel-shingle seabed as well as on mud on lower shores and up to 50 m depth. It feeds on zooplankton and can reach a maximum size of 10 cm. It is likely to be vulnerable to dredging because of the fragility of its body and the type of habitat it colonizes.

Recoverability

Sagartia is a protandrous hermaphrodite that can also reproduce asexually by budding. The reproductive age is reached within one year, fertilization occurs in the water column and the developmental mechanism is planktotrophic viviparous. Provided the presence of a suitable habitat, recovery after disturbance should be moderate

References

  • Biology

    • Fish & Fish, 1996
  • Taxonomy

    • Hayward & Ryland, 1995b
    • Howson & Picton, 1997
    • Manuel, 1988
    • Stephenson, 1935
  • Distribution

    • Fish & Fish, 1996
    • Hayward & Ryland, 1995b
    • Manuel, 1988
    • NBN, 2002
    • Stephenson, 1935
    • Tebble, 1976
  • Reproduction

    • Fish & Fish, 1996
    • Foster-Smith, 2000
    • Thorson, 1946
    • Thorson, 1946