L19_FeedingGrowth_F09_Handout

L19_FeedingGrowth_F09_Handout - Feeding/growth - 1 EEMB 106...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Feeding/growth - 1 EEMB 106 Feeding and Growth I. Classification of fishes based on diet: A. Detritivore B. Herbivore C. Carnivore D. Omnivore E. Within these classifications: 1. Euryphagous 2. Stenophagous 3. Monophagous II. Classification by how food is eaten: A. Oral manipulators 1. Scrapers, e.g. parrotfish 2. Chunk biters, e.g. piranha, some sharks B. Ram feeders: predators that “swim through” prey 1. Continuous swimmers a. strain small food, e.g. whale shark b. chase down prey, e.g. lamnid sharks, tunas 2. Sit and wait or stalkers, e.g. pike, lizardfish 3. Inertial suction feeders, e.g. most fish a. Suction allows great diversification/versatility in diet b. How it works: Increase volume of buccal cavity by: i. elevating neurocranium ii. dropping floor of mouth iii. moving sides of mouth laterally iv. opening operculum v. wave of expansion from mouth to operculum vi. also: lowering mandible and protruding premaxilla c. Advantages of protrusion: i. increases suction forces ii. decreases predator/prey distance III. Feeding and digestive structures and functions
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

L19_FeedingGrowth_F09_Handout - Feeding/growth - 1 EEMB 106...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online