Lab Report on Shark
INTRODUCTION
As for the visual documentation of a living or dead specimen, digital photography has largely replaced traditional illustrations of the living specimen as the standard method of recording the colour and anatomy of the specimen in the field today. Earlier traditional illustration (coloured and black and white) are still considered scientifically important because they can stress fine anatomical features that are often obscured by liquid. Even today, these earlier traditional illustrations are referred in research and, in fact, are sometimes the only physical records of what a now-extinct (or near-extinct) fish look like in life. New technologies can only add to information we know about previously described species.
Different kinds of animals have different body coverings. Marine vertebrates include 5 major groups based on observable features including body covering, among other characteristics: * Fish have skin covered with wet scales * Amphibians have bare skin that is usually moist or wet * Reptiles have skin covered with dry scales * Birds have skin covered with feathers * Mammals have skin covered with hair (fur)
OBJECTIVES 1. Learn to use digital photography for visual documentation of specimen. 2. Locate and discuss the external and internal anatomy of the cartilaginous fish. 3. Draw and identify the external and internal features. 4. Describe the function for each feature.
METHODOLOGY 1. The briefing on the experiment is given by the demonstrator. 2. The full images of the specimens and other important features are taken for identification purposes by using white slate board as the background. 3. Ruler is used as a scale. 4. A shark is dissected by the demonstrator. The external and internal features are identified. A summary on the digestive and the reproductive system of a shark is written. 5. The steps how to observe the internal anatomy of a stingray is told briefly by the
As for the visual documentation of a living or dead specimen, digital photography has largely replaced traditional illustrations of the living specimen as the standard method of recording the colour and anatomy of the specimen in the field today. Earlier traditional illustration (coloured and black and white) are still considered scientifically important because they can stress fine anatomical features that are often obscured by liquid. Even today, these earlier traditional illustrations are referred in research and, in fact, are sometimes the only physical records of what a now-extinct (or near-extinct) fish look like in life. New technologies can only add to information we know about previously described species.
Different kinds of animals have different body coverings. Marine vertebrates include 5 major groups based on observable features including body covering, among other characteristics: * Fish have skin covered with wet scales * Amphibians have bare skin that is usually moist or wet * Reptiles have skin covered with dry scales * Birds have skin covered with feathers * Mammals have skin covered with hair (fur)
OBJECTIVES 1. Learn to use digital photography for visual documentation of specimen. 2. Locate and discuss the external and internal anatomy of the cartilaginous fish. 3. Draw and identify the external and internal features. 4. Describe the function for each feature.
METHODOLOGY 1. The briefing on the experiment is given by the demonstrator. 2. The full images of the specimens and other important features are taken for identification purposes by using white slate board as the background. 3. Ruler is used as a scale. 4. A shark is dissected by the demonstrator. The external and internal features are identified. A summary on the digestive and the reproductive system of a shark is written. 5. The steps how to observe the internal anatomy of a stingray is told briefly by the
References: 1. W. Geoffrey, 1999. What Does the Lateral Line System Do? http://www.ehow.com/how-does_4579852_does-lateral-line-system-do.html. Retrieved on 15 March 2013. 2. Wischnitzer, S. (1993) Atlas and Dissection Guide for Comparative Anatomy (5th edition). New York: W. H. Freeman and Company. 3. Unknown Author. No date. SeaWorld Parks & Entertainment. Animal; Sharks and Rays. http://www.seaworld.org/animal-info/info-books/sharks-&-rays/anatomy.htm. Retrieved on 15 March 2013. 4. Jennifer Kennedy. 2013. About.com. Education in Marine Life; Placoid Scales. http://marinelife.about.com/od/glossary/g/placoidscales.htm. Retrieved on 16 March 2013. 5. Shark Savers, Inc. 2013. Shark and Ray Reproduction. https://www.sharksavers.org/en/education/biology/shark-and-ray-reproduction/. Retrieved on 16 March 2013.