Where are chthamalus located?
Chthamalus fragilis is a small gray barnacle found in the upper intertidal zone of the northwestern Atlantic Ocean, from approximately Cape Cod southward to Florida and into the Caribbean and Gulf of Mexico. It is also commonly known as little grey barnacle.
What is the interaction between Chthamalus and balanus?
Balanus can out-compete Chthamalus by crowding or smothering, but Chthamalus can occupy higher tide levels than Balanus because it is more resistant to desiccation. Lower on the shore, acorn barnacles mix in with the Endocladia (Turfweed) assemblage, and are also common on mussel shells.
What do Chthamalus barnacles eat?
Chthamalus stellatus / Chthamalus montagui generally feed on small plankton. They can consume diatoms, but were found not to grow under a regime dominated by diatoms (Barnes & Barnes, 1965).
What is the fundamental niche of Chthamalus?
The fundamental niche of Chthamalus includes both the upper and middle intertidal zones. – The realized niche of a species is a subset of the fundamental niche, limited by biotic interactions such as competition. The realized niche of Chthamalus is the upper intertidal zone only.
Are Chthamalus and Balanus the same species?
Two species of barnacles on rocky coasts often compete for space. The smaller species (Chthamalus) is unable to compete as well as that of the larger species (Balanus). However, Chthamalus can survive dry condition better than Balanus, so it can live higher up on the rocks.
Which type of competition is exhibited by Balanus and Chthamalus barnacles?
Barnacles living along rocky shores provide the classic example of competitive dominance in the marine ecosystem: by means of firm attachment and rapid growth, balanoid barnacles commonly undercut and overgrow the genus Chthamalus, which is thereby restricted to the upper fringe of the intertidal zone, where balanoids …
How can I tell what kind of barnacle I have?
Identification of sessile barnacles is usually depending on the size, shape and number of calcareous plates surrounding the body. Also the shape and relative size of the movable plates covering the opening may be important. Coloration and ornamentation of the plates is useful for some species.
What prevents Chthamalus occupying deeper zones?
When Connell removed Semibalanus from the area, however, Chthamalus was easily able to occupy the deeper zone, indicating that no physiological or other general obstacles prevented it from becoming established there.
What is the fundamental niche of Chthamalus quizlet?
Do barnacles compete with each other?
What is the interaction between Chthamalus and Balanus quizlet?
Chthamalus and Balanus compete for the same types of food. Balanus is less able to resist desiccation than Chthamalus. Balanus is a better osmoregulator that Chthamalus. Chthamalus prefers higher temperatures than Balanus.
How big can a barnacle get?
8.5 to 1 inch
Adult barnacles measure 8.5 to 1 inch in length and 0.5 to 1.5 inches in height, depending on the species.