BIOTIC

BIOTIC Species Information for Lithophyllum incrustans

Researched by

Dr Keith Hiscock

Data supplied by

MarLIN

Refereed by

Dr Yvonne Chamberlain

Reproduction/Life History

Reproductive type

Gonochoristic

Developmental mechanism

Spores (sexual / asexual)

Reproductive Season

October to April

Reproductive Location

Insufficient information

Reproductive frequency

Biannual episodic

Regeneration potential

Life span

21-50 years

Age at reproductive maturity

2-3 years

Generation time

Insufficient information

Fecundity

See additional information

Egg/propagule size

Insufficient information

Fertilization type

Insufficient information

Larvae/Juveniles
Larval/Juvenile dispersal potential	>10km	Larval settlement period	Insufficient information
Duration of larval stage	Insufficient information

Reproduction Preferences Additional Information

Gametangial and tetrasporangial plants occur commonly on some shores in Devon and Cornwall but are rare in the north. The 'Time of first and last gamete' refers to the time when reproductive types occur however, some conceptacles are present throughout the year. (Irvine & Chamberlain 1994.) Assuming one layer of conceptacles is produced each year, plants up to 30 years old are reported (Edyvean pers. comm.. in Irvine & Chamberlain 1994). Reproductive types occur from October to April but tail-off into summer. It has been calculated that 1 mm x 1mm of reproductive thallus produces 17.5 million bispores per year with average settlement of only 55 sporelings/year (Edyvean & Ford 1984)

Reproduction References

Irvine & Chamberlain, 1994, Edyvean & Ford, 1984, Edyvean & Ford, 1987,