BIOTIC Species Information for Osilinus lineatus
|Researched by||Nova Mieszkowska||Data supplied by||MarLIN|
|Refereed by||This information is not refereed.|
|Typical food types||Microalgae||Habit||Free living|
|Bioturbator||Not relevant||Flexibility||None (< 10 degrees)|
|Height||Up to 3 cm||Growth Rate||See additional information|
|Adult dispersal potential||100-1000m||Dependency||Independent|
|General Biology Additional Information||Growth Rate
Initially rapid, Osilinus lineatus can grow up to 7-8mm in diameter between spawning and December (Fretter & Graham, 1977; Kendall et al.,1987), although the average size of newly settled animals is around 3mm (pers. obs.). Growth slows down and may stop in the first winter and every successive winter, before increasing in spring (Williams, 1965). One year post settlement, juveniles can reach 11-15mm (Fretter & Graham 1977, Fretter, 1988). Growth slows in adults when they become sexually mature but continues throughout the life of the animal.
Osilinus lineatus feeds on microscopic algae, which it grazes from rock surfaces using a brush-like radula on the tongue. Feeding is assumed to occur at night or during high water (Crothers, 2001) as no observations of feeding during daylight or at low water have been published.Respiration
Osilinus lineatus has a gill for respiration in water and a well vascularised mantle cavity which allows the animal to breathe in air (Crothers, 2001).Sensory
Osilinus lineatus detects its environment by means of two stalk eyes and a pair of sensory tentacles on the head, and three pairs of sensory tentacles on the foot.
|Biology References||Hawkins & Jones, 1992, Fish & Fish, 1996, Hayward et al., 1996, Crothers 2001, Desai, 1966, Fretter & Graham, 1977, Graham, 1988, Kendall et al., 1987, Williams, 1965., Williamson & Kendall, 1981,|