Premium Essay

Essay On Dungeness Crab

Submitted By
Words 1127
Pages 5
Dungeness crab (Metacarcinus magister)
Introduction: The Dungeness crab, Metacarcinus magister (formerly: Cancer magister), is also known as market crab, and San Francisco crab and belongs to the family Cancridae. The common name of this species comes from the port of Dungeness, Washington. This species is among California’s most popular shellfish and is one of the largest edible crabs along the Pacific Coast of America. The estimated maximum life span is from 8 to 13 years.
Geographical range and habitats: The geographical range of Dungeness crab extends from Alaska's Aleutian Islands to Point Conception, California. They inhabit eelgrass beds and are usually found on sandy or sand-mud bottoms. Dungeness crabs generally prefer cooler northern
…show more content…
The abdomen in female, or tail flap, is much broader than in the male crab. This broad tail flap allows accommodate and protect the very large number of eggs till hatching. In both male and female, the tip of the last segment of the tail flap is rounded. At the age of 4 to 5 years, the crab may weigh between 1 to 1.5 …show more content…
Crab pots or traps which are designed to only capture the target crab of legal-sized, Crab pots and traps are generally designed to target a particular species, which means that under-size crabs and accidental capture is usually rare. Moreover, as the pots or traps do not injure the captured animals, it is easy to release any unwanted species or undersized crabs. Because crab pots and traps sit stationary on the seafloor in one location, they do not cause significant habitat

Similar Documents

Premium Essay

Jared Diamond Collapse

...COLLAPSE HOW S O C I E T I E S CHOOSE TO FAIL OR S U C C E E D JARED DIAMOND VIK ING VIKING Published by the Penguin Group Penguin Group (USA) Inc., 375 Hudson Street, New York, New York 10014, U.S.A. Penguin Group (Canada), 10 Alcorn Avenue, Toronto, Ontario, Canada M4V 3B2 (a division of Pearson Penguin Canada Inc.) Penguin Books Ltd, 80 Strand, London WC2R ORL, England Penguin Ireland, 25 St. Stephen's Green, Dublin 2, Ireland (a division of Penguin Books Ltd) Penguin Books Australia Ltd, 250 Camberwell Road, Camberwell, Victoria 3124, Australia (a division of Pearson Australia Group Pty Ltd) Penguin Books India Pvt Ltd, 11 Community Centre, Panchsheel Park, New Delhi—110 017, India Penguin Group (NZ), Cnr Airborne and Rosedale Roads, Albany, Auckland 1310, New Zealand (a division of Pearson New Zealand Ltd) Penguin Books (South Africa) (Pty) Ltd, 24 Sturdee Avenue, Rosebank, Johannesburg 2196, South Africa Penguin Books Ltd, Registered Offices: 80 Strand, London WC2R ORL, England First published in 2005 by Viking Penguin, a member of Penguin Group (USA) Inc. 13579 10 8642 Copyright © Jared Diamond, 2005 All rights reserved Maps by Jeffrey L. Ward LIBRARY OF CONGRESS CATALOGING IN PUBLICATION DATA Diamond, Jared M. Collapse: how societies choose to fail or succeed/Jared Diamond. p. cm. Includes index. ISBN 0-670-03337-5 1. Social history—Case studies. 2. Social change—Case studies. 3. Environmental policy— Case studies. I. Title. HN13. D5 2005......

Words: 235965 - Pages: 944