Ferreirolo ® 14-Мар-2020 19:46

Hooks Used In Artisanal Longline Fisheries Of The Eastern Pacific Ocean


Year: 2011
Language: english
Author: Takahisa Mituhasi and/y Martín Hall
Genre: Catalogue
Publisher: Inter-American Tropical Tuna Commission
Format: PDF
Quality: eBook
Pages count: 28
Description: OBJECTIVES AND PREPARATION OF THIS CATALOG
Fisheries and bycatch studies frequently require measures of catch per unit of effort, and a critical need to produce consistent time series is the standardization of the effort measures. For longlines, captures per 1000 hooks are commonly used. Artisanal fisheries show a large variability of types and sizes in time and space, caused by problems of hook availability and costs, multiple targets, etc. As hook selectivity depends on its shape and size, both the catch per unit of effort of the target species, and of the incidental captures are affected by the hook used.
To maintain the technical information needed on the hooks, it is necessary to identify the types in use to compare their performances, for mitigation studies, and others. It was decided to produce a visual catalog of hooks in use in the Eastern Pacific coastal region from Mexico to Peru, similar to those created by Beverly and Park (2009) for the western Pacific, and Yokota et al. (2006) for pelagic longline fisheries. Samples were collected throughout the region with the cooperation of the fisheries agencies of the countries involved, and images were produced in the true size, so that scientists or observers could easily identify the hooks in use by placing a hook over the images, until a match was found.
We would appreciate cooperation of all those interested in the catalog, in providing us with additional models or sizes that they may encounter, and that are not represented in this first set, to add them to the catalog.
English and Spanish

Contents

A visual catalog of hooks in use in the Eastern Pacific coastal region from Mexico to Peru, no index.

Screenshots

Hooks-Anzuelos-Catalogue

Скачать [3 KB]

Спасибо

Похожие релизы

Bycatch and no-tuna catch in the tropical tuna purse seine fisheries of the world - Hull M. at all…
Reef Fish Identification: Tropical Pacific - Gerald Allen [2005, PDF]
Horizontal Longline Fishing Methods and Techniques a Manual for Fishermen - Steve Beverly, Lindsay…
Maritime Governance and South Asia - Jivanta Schottli [2018, PDF]
Ships' Routeing - IMO [2019, PDF]
Dive Atlas of the World - Jack Jackson (General editor) [2016, EPUB]
Numerical modelling of marine hydrodynamics : applications to dynamic physical processes -…
Stable Seas: Caribbean - Laura Burroughs [2020, PDF]
Fisheries Technology for developing Countries - National Academy of Sciences [1988, PDF]
Time in Maps - From the Age of Discovery to Our Digital Era - Winterer C., Wigen K. [2020, PDF/EPUB]
  • Ответить

Текущее время: Сегодня 18:17

Часовой пояс: GMT + 3