Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program
Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program

Author: Mary Elizabeth Matta

Publisher:

Published: 2012

Total Pages: 114

ISBN-13:

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The Age and Growth Program at the Alaska Fisheries Science Center is tasked with providing age data in order to improve the basic understanding of the ecology and fisheries dynamics of Alaskan fish species. The primary focus of the Age and Growth Program is to estimate ages from otoliths and other calcified structures for age-structured modeling of commercially exploited stocks; however, the program has recently expanded its interests to include numerous studies on topics ranging from age estimate validation to the growth and life-history of non-target species. Because so many applications rely upon age data and particularly upon assurances as to their accuracy and precision, the Age and Growth Program has developed this practical guide to document the age determination of key groundfish species from Alaskan waters. The main objective of this manual is to describe techniques specific to the age determination of commercially and ecologically important species studied by the Age and Growth Program. The manual also provides general background information on otolith morphology, dissection, and preparation, as well as descriptions of methods used to measure precision and accuracy of age estimates. This manual is intended not only as a reference for age readers at the AFSC and other laboratories, but also to give insight into the quality of age estimates to scientists who routinely use such data.

Stock Identification Methods
Stock Identification Methods

Author: Steven X. Cadrin

Publisher: Academic Press

Published: 2013-10-04

Total Pages: 589

ISBN-13: 0123972582

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Stock Identification Methods, 2e, continues to provide a comprehensive review of the various disciplines used to study the population structure of fishery resources. It represents the worldwide experience and perspectives of experts on each method, assembled through a working group of the International Council for the Exploration of the Sea. The book is organized to foster interdisciplinary analyses and conclusions about stock structure, a crucial topic for fishery science and management. Technological advances have promoted the development of stock identification methods in many directions, resulting in a confusing variety of approaches. Based on central tenets of population biology and management needs, this valuable resource offers a unified framework for understanding stock structure by promoting an understanding of the relative merits and sensitivities of each approach. - Describes 18 distinct approaches to stock identification grouped into sections on life history traits, environmental signals, genetic analyses, and applied marks - Features experts' reviews of benchmark case studies, general protocols, and the strengths and weaknesses of each identification method - Reviews statistical techniques for exploring stock patterns, testing for differences among putative stocks, stock discrimination, and stock composition analysis - Focuses on the challenges of interpreting data and managing mixed-stock fisheries

Otolith Microstructure Examination and Analysis
Otolith Microstructure Examination and Analysis

Author: David K. Stevenson

Publisher: McClain Printing Company

Published: 1992

Total Pages: 422

ISBN-13:

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The field of otolith microstructure research has experienced phenomenal growth since the early 1970s and now forms the basis for hundreds of studies in early life history, age, growth, recruitment, migration, mortality and stock structure. This book represents the first effort to compile and summarize the many techniques and procedures associated with studies of otolith microstructure. The complete sequence of events, from sample collection to data analysis, is covered comprehensively, so as to be applicable to most species and situations. The various chapters include both published and unpublished procedures.

High Latitude Crabs
High Latitude Crabs

Author: Alaska Sea Grant College Program

Publisher: Computer Technology Research Corporation

Published: 1995

Total Pages: 736

ISBN-13:

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This proceedings builds on knowledge brought together during four previous north latitude crab symposia, and has recommendations for future crab research. Forty-eight papers were presented at the 1995 symposium in Anchorage, Alaska. Research is included from Argentina, Australia, Canada, Japan, Norway, Russia, and the United States. Long-term goals of the symposium are to better conserve the resource, strengthen the industry, and provide accessible healthful protein to the consumer. Winner of a Gold Award for editing, Agricultural Communicators in Education.

Marine Mammals Ashore
Marine Mammals Ashore

Author: Joseph R. Geraci

Publisher: National Aquarium in Baltimore

Published: 2005

Total Pages: 386

ISBN-13: 0977460908

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Comprehensive manual for understanding and carrying out marine mammal rescue activities for stranded seals, manatees, dolphins, whales, or sea otters.

Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program
Age Determination Manual of the Alaska Fisheries Science Center Age and Growth Program

Author: Mary Elizabeth Matta

Publisher:

Published: 2012

Total Pages: 114

ISBN-13:

DOWNLOAD EBOOK

The Age and Growth Program at the Alaska Fisheries Science Center is tasked with providing age data in order to improve the basic understanding of the ecology and fisheries dynamics of Alaskan fish species. The primary focus of the Age and Growth Program is to estimate ages from otoliths and other calcified structures for age-structured modeling of commercially exploited stocks; however, the program has recently expanded its interests to include numerous studies on topics ranging from age estimate validation to the growth and life-history of non-target species. Because so many applications rely upon age data and particularly upon assurances as to their accuracy and precision, the Age and Growth Program has developed this practical guide to document the age determination of key groundfish species from Alaskan waters. The main objective of this manual is to describe techniques specific to the age determination of commercially and ecologically important species studied by the Age and Growth Program. The manual also provides general background information on otolith morphology, dissection, and preparation, as well as descriptions of methods used to measure precision and accuracy of age estimates. This manual is intended not only as a reference for age readers at the AFSC and other laboratories, but also to give insight into the quality of age estimates to scientists who routinely use such data.