Cut You Up And See Whats Up

Perch Dissection By Michael Flora- Mitcham- P2- Pap Bio

Objectives

to observe the external and internal anatomy of a perch.

to determine the sex of a perch using internal anatomy.

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Background Information

The scientific name of a Perch is Perca flavescens . A perch is most suited to living in water with lots of vegetation. Below is a picture of a perch underwater in its habitat. Predators include eagles, hawks, and larger fish. Prey include algae and plankton. Perch have specialized teeth called palatines that they use to eat other small fish like young large mouth bass, minnows, and even some insects. Another adaptation is they can also filter out zooplankton with their gill rakers, which are small filters in the gills
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Circulatory System

The circulatory system of perch is quite simple. Like mammals, it consists of a heart, blood and blood vessels. The heart of a perch is a simple muscular structure that is located between the posterior gill arches. It is enclosed by the pericardial membrane or pericardium. The heart consists of an atrium, a ventricle, a sac-like thin-walled structure known as sinus venosus and a tube, known as bulbus arteriosus. In spite of containing four parts, the heart of a perch is considered two-chambered.

Extra Information

1. The heaviest perch ever recorded was 4 pounds and 3 ounces.

2. Perch's are found throughout the United States and Canada.

3. Females deposit their eggs on underwater vegetation.

4. Perch's tend to go to light to eat bugs.

5. Eggs hatch in two weeks.

6. Males reach maturity in 1-3 years and females reach maturity in 2-3 years.

7. Perch's are easy to catch with bait and good to eat.

Perch Dissection