Zoology After Midterm Lecture 19
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What are four types of feedng in bivalves
- Filter/ suspension feeding
- Deposit Feeding
- Carniverous Feeding
- Parasitic Feeding
What is it that makes bivalves the most effective filter feeders
What are protobranchs? lamlibranchs?
Protobranchs - protobranchs are a sublcass of bivalves by the looks of things. i assume the same is true fo lamlibranchs.
What are septibranchs known for
their carniverous feedings
Who does parasitic feeding
clams of the genus entovavla in the sea cucumber gut
What are 7 types of bivalve ecotypes
- 1. Active shallow burrowers
- 2. Active deep burrows
- 3. Sedentary deep burrowers
- 4. Fast moving burrowers
- 5. Hard sediment burrowers
- 6. Attached to hard substrates
- 7. Swimmers
How long would you expect the siphons of shallow borrowers to be
shallow burrowers have short siphons
How are Active deep burrowers active?
Like tellenia they have long sepearte motile siphons used to vacuum up some food.
What siphon would you expect of sedentary deep burrowers
Fused long siphons
What is meant by fast moving active burrowers. What is special about their anchor
- i assume that thier siphons move out quickly or around quickly.
- They have a mushroom shaped anchor
What enables a hard sediment burrower to burrow into wood and hard sediments
A combination of Mechanical and chemical means
What enables a bivalve to attach to hard surfaces?
Byssus threads or cements
What enables swimmers to swim
Jetting by flapping valves
What are three molluscan resources
What chemicals do we find of molluscs
- Calcium Carbonate
- Colour dyes
What are some adverse effects of molluscs
- Vectors of parasitic disease
- Pests in agriculture and aquaculture
- Marine fouling
What is marine fouling
refers to the adhesion of bivalves to ships and other important marine structures. big economic coster
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