The Dusky Dolphin Master Acrobat Off Different Shores 1st Edition by Bernd Wursig, Melany Wursig ISBN 0123737230 9780123737236

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ISBN 10: 0123737230 
ISBN 13: 9780123737236
Author: Bernd Wursig, Melany Wursig

Much has been written about dolphins and whales, and excellent books exist especially on the charismatic bottlenose dolphins; and killer, humpback, and sperm whales. But detailed studies have been carried out on a handful of other species, and this book summarizes our state of knowledge of a little dolphin – the southern hemisphere “dusky,” and compares its behavioral strategies in different environs. The editors, Bernd and Mel Würsig, began studying duskies in Patagonia Argentina in 1972. Although they have been to many parts of the Earth since then — including work on Amazon and Yangtze river dolphins, Hawai’i for the delicate lovely spinner dolphin, the Arctic for bowhead and gray whale work, and bottlenose dolphins in several milieus — they have always returned to their first love of unraveling the social patterns and life strategies of duskies that exist in small groups in semi-enclosed bays and as herds of well over one thousand in the open ocean. This book documents the latest research, from their feeding patterns to their acrobatic skills. It is full of scientific facts, with a sense of poetry and wonder of the unknown.

The Dusky Dolphin Master Acrobat Off Different Shores 1st Table of contents:

Chapter 1. The Dusky Dolphins’ Place in the Delphinid Family Tree
A State of Confusion
A Historical Overview of the Genus Lagenorhynchus
Taxonomic History of the Dusky Dolphin
Evolution, Molecular Systematics, and a New Taxonomy
Acknowledgments
Notes

Chapter 2. Dusky Dolphin Life History and Demography
Dusky Dolphin Taxonomy
Distribution and Abundance
Habitat Characteristics
External Characteristics
Size, Shape, and Sexual Dimorphism
Internal Anatomy
Growth and Reproduction
Associations with Other Species
Parasites, Commensals, and Disease
Diet and Foraging Ecology
Anthropogenic Threats
Some Answers and More Questions
Acknowledgments

Chapter 3. Dusky Dolphin Trophic Ecology: Their Role in the Food Web
Introduction
Dusky Dolphins as Predators
Dusky Dolphins as Competitors for Food Resources
Mixed-Species Foraging Associations
Dusky Dolphins as Hosts in Parasitic Relationships
Dusky Dolphins as Prey
Dusky Dolphin Interactions with Humans
Acknowledgments
Note

Chapter 4. Acoustics of Dusky Dolphins
Introduction
Whistle Signals
Burst Pulse Signals
Echolocation Signals
Echolocation Behavior
Discussion and Conclusions
Acknowledgments

Chapter 5. Dusky Dolphins Foraging at Night
Introduction
Methods
Results
Discussion
Acknowledgments

Chapter 6. Dusky Dolphins Foraging in Daylight
Introduction
Herding as a Marine Foraging Specialization
How Dusky Dolphins Coordinate Behaviors During Foraging
Differences in Dusky Dolphin Foraging Between Study Sites
How Does Ecology Influence Dusky Dolphin Foraging?
Conclusions
Acknowledgments

Chapter 7. Predator Threats and Dusky Dolphin Survival Strategies
Introduction
Dusky Dolphins off Kaikoura, New Zealand
Killer Whales
Sharks
Dusky Dolphins—Group Living and Vocal Repertoire
Summary and Conclusions
Acknowledgments

Chapter 8. Mating Habits of New Zealand Dusky Dolphins
Promiscuous Mating System and Reproductive Biology
Study Objectives
Keeping Up with the Action: Methods and Advances
Effect of the Breeding Season on Sexual Behavior
Social–Sexual Activity by Time of Day
Small Mating Groups
Mating of the Quickest: Male–Male Competition
Team Mates to Get Mates: Associations Among Males
Female Choice and Female Strategies
Interactions Between Mating Groups and Nurseries
Procreation and Recreation: The Role of Non-Reproductive Sex in Dolphin Social Lives
Summary and Conclusions
Acknowledgments

Chapter 9. Dusky Dolphin Calf Rearing
Introduction
Female Dusky Dolphin Reproductive Parameters
Overview of Influences on Nursery Group Formation
Behavioral Observations
Dangers in Calf Rearing
Opportunities in Calf Rearing
Summary
Acknowledgments

Chapter 10. Sexual Segregation and Genetic Relatedness in New Zealand
Group Composition
Methods and Results
Grouping Patterns off New Zealand
Acknowledgments

Chapter 11. Human Interactions with Dusky Dolphins: Harvest, Fisheries, Habitat Alteration, and Tourism
Introduction
Direct Harvest of Dusky Dolphins
Dusky Dolphin Interactions with Fisheries
Anthropogenic Changes to Dusky Dolphin Habitat
Dusky Dolphin Interactions with Tourism
Summary and Conclusions
Acknowledgments

Chapter 12. Human Interactions with Dusky Dolphins: A Management Perspective
Introduction
Management Frameworks
Case Studies of New Zealand Management Approaches
Concluding Remarks
Acknowledgments

Chapter 13. Dolphin Swimming and Watching: One Tourism Operator’s Perspective
Introduction
The Dolphin Encounter Story

Chapter 14. Neglected But Not Forgotten—Southern Africa’s Dusky Dolphins
Introduction
Appearance
Distribution and Movements
External Commensals and Parasites
Food and Feeding
Reproduction and Growth
Behavior
Conservation Threats
Discussion
Acknowledgments

 

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Tags: Bernd Wursig, Melany Wursig, Dolphin Master, Different Shores