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Guida Degli Squali E Delle Razze Del Mediterraneo

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Guida Degli Squali E Delle Razze Del Mediterraneo

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Author : Giuseppe Notarbartolo di Sciara
language : it
Publisher: Muzzio Editore
Release Date : 1998

Guida Degli Squali E Delle Razze Del Mediterraneo written by Giuseppe Notarbartolo di Sciara and has been published by Muzzio Editore this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Nature categories.

Guida A Squali Razze E Chimere Del Mediterraneo E D Europa

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Author : David A. Ebert
language : it
Publisher:
Release Date : 2022

Guida A Squali Razze E Chimere Del Mediterraneo E D Europa written by David A. Ebert and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Science categories.

Field Identification Guide To The Sharks And Rays Of The Mediterranean And Black Sea

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Author : Fabrizio Serena
language : en
Publisher: Food & Agriculture Org.
Release Date : 2005

Field Identification Guide To The Sharks And Rays Of The Mediterranean And Black Sea written by Fabrizio Serena and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2005 with Nature categories.

This volume presents a fully illustrated field guide for the identification of the sharks and rays most relevant to the fisheries of the Mediterranean and Black Sea. An extensive literature review was carried out for the preparation of this document. A total of 49 sharks, 34 batoids and 1 chimaera are fully treated. The presence of 5 sharks and 2 batoids included in this field guide, need, however, to be confirmed. The guide includes sections on technical terms and measurements for sharks and batoids, and fully illustrated keys to those orders and families that occur in the region. Each species account includes: at least one annotated illustration of the species highlighting its relevant identification characters; basic information on nomenclature, synonyms and possible misidentifications; FAO common names; basic information on size, habitat and biology, distribution, importance to fisheries, and conservation and exploitation status.

Chondrichthyes

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Author : Luis Fernando Rodrigues-Filho
language : en
Publisher: BoD – Books on Demand
Release Date : 2017-12-20

Chondrichthyes written by Luis Fernando Rodrigues-Filho and has been published by BoD – Books on Demand this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-20 with Science categories.

Chondrichthyes are a group of cartilaginous fish, where we have sharks, rays, and chimeras as members. This group plays an important role in aquatic ecology, as they act as predators throughout the food chain (e.g., sharks). However, many populations of Chondrichthyes are threatened by several factors (increased direct fishing, high mortality rate as accompanying fauna, marine pollution, habitat destruction, etc.). These declines are evident in many parts of the world and have come to the attention of scientists, conservation organizations, the media, and the general public. Fisheries legislation regulating international fisheries markets has been amended to provide greater protection for this group along with other species of fish. However, little is known about these species, which reinforces the importance of studies in order to have a better understanding of the elasmobranch stocks, as well as to identify the influences of the anthropic action of fishing. In response to knowledge on the low sustainability of cartilaginous fish fisheries on a global scale, FAO has developed an international plan of action for the management and conservation of these fish, with the aim of developing and implementing national plans of action to ensure management and conservation of these stocks, having as main recommendation the collection of information about the Chondrichthyes, especially the sharks. Even so, this group is little known in terms of biodiversity, ecology, behavior, and a host of other characteristics relevant to this taxon, which is very worrying. Chondrichthyes - Multidisciplinary Approach attempts to portray to the readers up-to-date information on Chondrichthyes to promote an overview of the current taxon, serving as an indispensable source of access to more accurate and detailed information on shark rays and chimeras.

Fish Atlas Of The Celtic Sea North Sea And Baltic Sea

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Author : Henk J.L. Heessen
language : en
Publisher: BRILL
Release Date : 2023-09-14

Fish Atlas Of The Celtic Sea North Sea And Baltic Sea written by Henk J.L. Heessen and has been published by BRILL this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-09-14 with Business & Economics categories.

The atlas presents a unique set of abundance data to describe the spatial, depth, size, and temporal distribution of demersal and pelagic fish species over an extensive marine area, together with accounts of their biology. A large number of pictures, graphs and distribution maps illustrate the text. By largely avoiding - or at least explaining - scientific terms and providing extensive references, the book should be useful for both laymen and scientists. The quantitative information on some 200 fish taxa is derived from 72,000 stations fished by research vessels during the period 1977-2013. The area covers the northwest European shelf from west of Ireland to the central Baltic Sea and from Brittany to the Shetlands. Although the surveys extend beyond the shelf edge, only taxa reported at least once in waters less than 200 m are included. Typical deep-water species and typical fresh-water species are excluded. We hope this publication will contribute to gaining a better understanding of the ocean ecosystems.

Atlas Of The Maturity Stages Of Mediterranean Fishery Resources

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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2019-04-15

Atlas Of The Maturity Stages Of Mediterranean Fishery Resources written by Food and Agriculture Organization of the United Nations and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-04-15 with Technology & Engineering categories.

This atlas aims to present sound approaches to maturity sampling for a wide range of Mediterranean species – including bony fish, cartilaginous fish, both oviparous and viviparous, crustaceans and cephalopods – based on an accurate determination of the different maturity stages. It includes macroscopic photos of gonads belonging to the main species and, for some, a validation-based histological analysis.

Handbook On Fish Age Determination A Mediterranean Experience

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Author : Food and Agriculture Organization of the United Nations
language : en
Publisher: Food & Agriculture Org.
Release Date : 2019-05-31

Handbook On Fish Age Determination A Mediterranean Experience written by Food and Agriculture Organization of the United Nations and has been published by Food & Agriculture Org. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-05-31 with Technology & Engineering categories.

This handbook provides guidance on methods for use in fish ageing studies. Fish age, among other biological parameters, is one of the most relevant pieces of data to attain sustainable exploitation levels of fishery resources. Indeed, most analytical methods used in stock assessment require knowledge of demographic structure according to age of stocks, as well as to recruitment, growth, maturity, natural mortality, etc., which are strictly linked to information on age and age structure. The handbook was put together to deal with identified gaps – which affect both the precision and the accuracy of estimations – regarding ageing schemes, criteria and methodologies used in preparing calcified structures. It focuses on the general principles that underpin age analysis (assignment of birth date, preparation methods, aging scheme reading and identification of true and false rings). Crucially, it aims to contribute to the establishment of common analysis methods, which can enable better calibration across the diverse institutes involved, thereby improving the quality and reliability of results.