Task: you need to research the adaptations of at least 6 species
on the rocky shore. Choose at least one limpet, mussel,barnacle,
chitons, tube worms, anemone, whelk or periwinkle and sea
lettuceName of Organism Columnar Barnacle
Species Name: Chamaesipho columna
Diagram/sketch:
Adaptations:Behavioural:
Structural:Each animal lives in a tent-like shell that is
permanently fixed to the rocks. When the tide is out the animal
retreats and two plates move across the top of the shell, forming a
tight lid. This prevents the animal from drying out. When the tide
comes in the plates open and the barnacle waves its feathery legs
into the water, brushing tiny pieces of food into its
mouth.Physiological:They employ two strategies to overwhelm their
competitors: "swamping" and fast growth. In the swamping strategy,
vast numbers of barnacles settle in the same place at once,
covering a large patch of substrate, allowing at least some to
survive in the balance of probabilities
Describe the abiotic factors that affect the organisms habitat:
Columnar Barnacles live in the high tide area meaning they dry out
a lot. The salt spray can dry them out. Columnar Barnacles have
adapted to this by having plates that move to stop them from drying
out. When the tide goes out the rock pools that the Barnacles live
in become hot because the temperature changes.
What food does it eat and what methods does it use to obtain
this food.Columnar Barnacles are filler feeders meaning they get
food from opening their mouths and getting pholtployic
Describe how you think the organism avoids being eaten. Columnar
Barnacles group together to stay alive. This means that at least
some of them will survive AND THEY HAVE strength in numbers
References:
