Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
14th Edition
ISBN: 9781305775480
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 24, Problem 2DAA
Summary Introduction
To explain: The way in which the mortality of the two groups differs when the overall results were compared.
Concept introduction: Horseshoe crab belongs to Phylum: Arthropod. They are normally found around shallow ocean waters. Horseshoe crabs are living fossils. Though the horseshoe crabs look like crustaceans, they are marine arachnids. The control horse shoe crabs are those, whose blood was not extracted and the experimental horseshoe crabs are those, whose blood was extracted.
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Experiment on The Predator-prey Interactions Between Zebrafish and Daphnia1. Six 1-L beakers were filled with aged tap water.2. To test the effect of light on the survival of Daphnia, the 6 beakers were divided equally into 2 treatments: light & dark. Beakers assigned to the dark treatment were covered w/ aluminum foil.3. One zebrafish (about 2-3 cm) starved for 24 hours was placed in each beaker.4. Fifty (50) Daphnia sp. individuals were added in each beaker containing the starved zebrafish. The top of the beakers assigned to the dark treatment were covered with aluminum foil.5. One hour after, the zebra fish was scooped out & the no. of surviving Daphnia in each set-up were counted.
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PART A: Fishing for the Future
Review the Tragedy of the Commons: https://youtu.be/CxC161GvMPc
Additional resources for this laboratory exercise:
Seafood Watch: http://www.seafoodwatch.org/
Center for Marine Conservation Ocean Action Network: www.cmc-ocean.org
Marine Fish Conservation Network: www.conservefish.org
World Wildlife Fund Conservation Action Network: www.takeaction.worldwildlife.org
UN FAO Fisheries and Aquaculture Department: www.fao.org/fishery/en
Marine Stewardship Council: www.msc.org/
1 Why is conservation important?
2 Do a search online. What can you do to help protect the oceans?
Chapter 24 Solutions
Bundle: Biology: The Unity and Diversity of Life, Loose-leaf Version, 14th + LMS Integrated for MindTap Biology, 2 terms (12 months) Printed Access Card
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