SECTION 10 — BUOYANCY & LOCOMOTION

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11 Terms

1
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Physostomous swim bladder

Connected to gut; gulp air (salmonids).

2
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Physoclistous swim bladder

Closed; uses gas gland & rete mirabile.

3
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Rete mirabile

Countercurrent system concentrating gases.

4
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Gas gland

Secretes gas into bladder.

5
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Oval window

Area for gas resorption.

6
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Anguilliform motion

Whole-body undulations.

7
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Carangiform motion

Tail-focused fast swimming.

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Thunniform motion

Extremely stiff body, tuna-like movement.

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Ostraciiform motion

Tail-only movement (boxfishes).

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Labriform motion

Pectoral fin rowing (wrasses).

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Rajiform motion

Pectoral winglike undulation (skates/rays).