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Of or relating to a lichen whose thallus is thin, crusty, and closely adherent to or embedded in the surface on which it grows.

[Latin crūstōsus, crusted, from crusta, crust; see kreus- in Indo-European roots.]


(Biology) biology having a crustlike appearance: crustose lichens.


(ˈkrʌs toʊs)

forming a crusty, tenaciously fixed mass that covers the surface on which it grows, as certain lichens.
[1875–80; < Latin crustōsus covered with a crust, derivative of crust(a) crust]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.crustose - (of lichens) having a thin crusty thallus that adheres closely to the surface on which it is growing; "crustose lichens"
References in periodicals archive ?
tuberculata coccinea postlarvae on crustose coralline algae at high and low larval density (n = 3 and n = 10, respectively).
Formulated feeds for newly settled juvenile abalone based on natural feeds (diatoms and crustose coralline algae).
KEY WORDS: postlarval abalone, stable isotope ratios, benthic diatoms, macroalgal gametophyte, crustose coralline algae habitat, Haliotis discus hannai
Across a range of cues, metamorphosis was highest on crustose coralline algae (97 [+ or -] 4% metamorphosis after 4 days), intermediate on 1 [micro]M GABA (55 [+ or -] 14%), and low on diatom films (<20%).
ABSTRACT Abalone larvae settle (attach and metamorphose) in response to crustose coralline algae (CCA), but it is not known whether the settlement cues arise from the CCA or from microbes on their surface.
1997a) showed that the crustose coralline algae (CCA) Lithophyllum yessoense was not an important food source for postlarval H.
On coastal rocky bottoms in subarctic to temperate marine environments, marine forests of large perennial brown algae are found in the upper subtidal zone, and barren areas dominated by crustose coralline red algae cover the lower subtidal zone (Neushu11967, Mann 1972, Choat & Schie11982, Witman 1985, Ojeda & Dearborn 1989, Taniguchi 1991, Underwood et al.
pulcherrimus from crustose coralline barren to algal turf during November to March is suggested to ensure gonad enhancement toward maturation and spawning (Agatsuma et al.
larger cover) in the shallow stratum relative to the deep stratum, but was not detected for either turf or crustose coralline algae.
Settlement is induced by cues from a wide range of sources, including crustose coralline algae (CCA), films of diatoms, some artificial inducers (reviewed by Roberts 2001), and ACA species (Huggett et al.
According to figure 4, the category of crustose lichens is the most significantly represented numerous at the study site, having 69 species, followed by leafy the foliose lichens, having 37 species.