Effects of Salinity on Metabolic Rate in Black Mollies

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Author:

Christopher Beck, Lawrence Blumer, Travis Brown

Subject:

Science and Technology

Institution Name:

Emory University|Morehouse College

Collection:

Association for Biology Laboratory Education (ABLE)

Grade Level:

Post-secondary

Abstract:

This study examines the metabolic costs of osmoregulation in a freshwater fish, the black molly (Poecilia latipinna). It could be used in either an upper-level ecology or physiology course. Students evaluate the metabolic rate of a fish at a particular salinity by measuring the continuous decrease in oxygen concentration in a sealed chamber over a ten-minute period, or the initial and final oxygen concentrations over a twenty-minute period. Metabolic rate is the slope of oxygen concentration versus time, or change in oxygen concentration divided by time. By measuring metabolic rate at different salinities, students evaluate the metabolic cost of osmoregulation.

Course Type:

Learning Module

Languages:

English

Material Type:

Activities and Labs, Lesson Plans

Media Format:

Downloadable docs

Conditions of Use:

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All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the copyright owner. Use solely at one's own institution with no intent for profit is excluded from the preceding copyright restriction, unless otherwise noted on the copyright notice of the individual chapter in this volume. Proper credit to this publication must be included in your laboratory outline for each use; a sample citation is given [on the copyright page of each volume]. Upon obtaining permission or with the "sole use at one's own institution" exclusion, ABLE strongly encourages individuals to use the exercises in this proceedings volume in their teaching program.