All About Perches -Erica Chen
Vu - PreAP Biology - April 6, 2014 - Period 3
Objective: Students will be learning the anatomy of a perch specifically the organs, functions, and interactions of the perches circulatory system.
Perca
Perches belong to phylum Chordata. They live in lakes, ponds, and streams where moderate amounts of vegetation provide cover, food and protection. Perches feeds on insects, crustaceans, worms, eggs, invertebrates, and small fishes. Their predators are humans and large fishes such as bluefish, striped bass, and walleye. For their role in its ecosystem, perches serve as an important predator and prey. Its adaptations are the different types of fins for transportation, water-adapted eyes, and scales for external protection.
Taxonomy
Kingdom: Animalia
Phylum: Chordata
Superclass: Osteichthyes
Class: Actinopterygii
Subclass: Neopterygii
Infraclass: Teleosei
Order: Perciformes
Family: Percidae
Genus: Perca
Evolutionary History and Relationship
Lab Dissection
Bony Fish (Perch) Anatomy
External Anatomy
- Nares (Nostril)
- Eye
- Mouth
- Pectoral Fin
- Operculum (Gill Cover)
- Anterior Dorsal Fin
- Pelvic Fin
- Scales
- Vent
- Anal Fin
- Lateral line
- Dorsal Fin
- Caudal Fin (Tail)
Internal Anatomy
- Gill
- Liver
- Swim Bladder
- Spinal cord
- Stomach
- Anus
- Heart
- Spleen
- Intestine
Circulatory System
The circulatory system of a perch is a low pressure, single loop system. This means that there is one direction of blood flow from the heart which acts as a pump. Deoxygenated blood is pumped throughout the heart and goes onward to the gills. This is where blood becomes oxygenated, getting rid of carbon dioxide. From here, the blood goes straight to the body.
Circulatory System Interaction
Respiratory System
Using the respiratory system, perches breathe in oxygen. In the circulatory system, the blood carries the oxygen to needed body parts of the perch.
Digestive System
When perches eat food, they absorb nutrients which is then carried through the circulatory system in order to send nutrients to specific body parts.
Nervous System
The brain in the nervous system controls the perch's heartbeat in the circulatory system.
Circulatory System of the Perch
Interesting Fun Facts
- Perches are one of the most abundant fish species
- Perches have over 6,000 species and 150 families
- Female are larger while males are darker
- Perches shed their eggs in long gelatinous rows and wove under tree roots or aquatic plants
- Young fishes require green water and egg yolk paste as first food
Work Cited
- http://en.wikipedia.org/wiki/Perch
- http://en.wikipedia.org/wiki/Yellow_perch
- http://www.dnr.state.md.us/fisheries/fishfacts/yellowperch.asp
- https://www.youtube.com/watch?v=pNZQEmGp11k&noredirect=1
- http://www.biokids.umich.edu/critters/Morone_americana/
- http://www.fcps.edu/islandcreekes/ecology/yellow_perch.htm
- http://www.stoneflysociety.org/fishinfo/yellowperch.htm
- http://www.kidsbiology.com/animals-for-children.php?animal=Perch
- http://mcgbiology.wikispaces.com/Perch+Green
- http://www.dfw.state.or.us/mrp/fishid/FishIDGlossary.asp
- http://www.fishtanksandponds.co.uk/fish-physiology/nervous-system.html
- http://anglerfishywishy.wordpress.com/diet-and-digestive-system/
- https://www.youtube.com/watch?v=TAFazucGJZs