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Chondrichthyes

2017-12-20 Science
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Release : 2017-12-20
Genre : Science
Kind : eBook
Book Rating : 115/5 ( reviews)

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Book Synopsis Chondrichthyes by : Luis Fernando Rodrigues-Filho

Download or read book Chondrichthyes written by Luis Fernando Rodrigues-Filho. This book was released on 2017-12-20. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Chondrichthyes - Multidisciplinary Approach

2017 Aquaculture. Fisheries. Angling
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Release : 2017
Genre : Aquaculture. Fisheries. Angling
Kind : eBook
Book Rating : 911/5 ( reviews)

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Book Synopsis Chondrichthyes - Multidisciplinary Approach by : Luis Fernando da Silva Rodrigues Filho

Download or read book Chondrichthyes - Multidisciplinary Approach written by Luis Fernando da Silva Rodrigues Filho. This book was released on 2017. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Fishes

2023-08-02 Nature
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Release : 2023-08-02
Genre : Nature
Kind : eBook
Book Rating : 603/5 ( reviews)

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Book Synopsis Fishes by : Alfredo Carvalho Filho

Download or read book Fishes written by Alfredo Carvalho Filho. This book was released on 2023-08-02. Available in PDF, EPUB and Kindle. Book excerpt: This is the first large-scale work that allows the identification of more than 1,000 species of coastal marine fish along the Brazilian coast, from the Guianas to Argentina. With the publication of "Fishes of the Brazilian Coast", Alfredo Carvalho-Filho fills a fundamental gap in the knowledge of fish worldwide. The author has participated in the Workshops for the Assessment of the State of Conservation of Marine Actinopterygii Species at the Chico Mendes Institute for Biodiversity Conservation and gives lectures on Communications, Ichthyology and, among these, the one entitled "Biology and Marketing", with two disciplines so diverse gathered in a single presentation!

Incidental catch of vulnerable species in Mediterranean and Black Sea fisheries – A review

2021-06-28 Technology & Engineering
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Release : 2021-06-28
Genre : Technology & Engineering
Kind : eBook
Book Rating : 313/5 ( reviews)

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Book Synopsis Incidental catch of vulnerable species in Mediterranean and Black Sea fisheries – A review by : Carpentieri, P., Nastasi, A., Sessa, M., Srour, A. (eds.)

Download or read book Incidental catch of vulnerable species in Mediterranean and Black Sea fisheries – A review written by Carpentieri, P., Nastasi, A., Sessa, M., Srour, A. (eds.). This book was released on 2021-06-28. Available in PDF, EPUB and Kindle. Book excerpt: Bycatch – a term widely used to refer to part of the catch unintentionally caught during a fishing operation, in addition to target species, and consisting of the discards and incidental catch of vulnerable species – is considered one of the most important threats to the profitability and sustainability of fisheries, as well as to the conservation of the marine environment and ecosystems. Understanding the bycatch issue and adopting effective measures in order to reduce bycatch rates are essential steps towards minimizing the impacts on vulnerable species and ensuring both a sustainable fisheries sector and healthy seas. In the Mediterranean and the Black Sea, the incidental catch of vulnerable species – namely seabirds, sea turtles, elasmobranchs, marine mammals and macrobenthic invertebrates – represents one of several challenges for the industrial, semi-industrial and small-scale fisheries that coexist in the region, as well as for the diverse and sensitive ecosystems impacted. Typically, data on this issue have been collected in an opportunistic manner and in ways that make comparisons difficult. The annual absolute values of incidental catch of vulnerable species are not available: studies cover only a small portion of the total fishing activity and often present important knowledge gaps for many types of fishing gear, countries and/or subregions, as well as on temporal scales, for example, to establish reliable baselines. The result is that little is known of the scope of the problem, despite incidental catch being a significant pressure on the populations of vulnerable species, as well as a concern for fishers.This regional review is an attempt to compile, in one single document, all available data and historical records on the incidental catch of vulnerable species in the Mediterranean and Black Sea fisheries, obtained from existing literature, databases and other grey sources, and collated in a standardized and comparable way. The main objective is to provide comprehensive baseline information, earmark the main data gaps, as well as identify the most impacting types of fishing gear by taxonomic group. This work is a reminder of the importance of standardized data collection and the need to have baseline information in order to support decision-making in the identification of appropriate bycatch mitigation techniques, thus enabling analysis of their effectiveness and comparison over time and space, as well as facilitating the implementation of relevant conservation and/or management measures at the national, subregional and regional levels.

General Fisheries Commission for the Mediterranean – Report of the forty-fifth session

2023-06-09 Technology & Engineering
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Release : 2023-06-09
Genre : Technology & Engineering
Kind : eBook
Book Rating : 246/5 ( reviews)

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Book Synopsis General Fisheries Commission for the Mediterranean – Report of the forty-fifth session by : Food and Agriculture Organization of the United Nations 

Download or read book General Fisheries Commission for the Mediterranean – Report of the forty-fifth session written by Food and Agriculture Organization of the United Nations . This book was released on 2023-06-09. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the discussions held during the forty-fifth session of the General Fisheries Commission for the Mediterranean and twelfth session of the Committee on Administration and Finance. During the session, progress in activities related to fisheries, aquaculture, compliance and other strategic activities was reviewed. The Commission adopted 17 binding recommendations and four resolutions related to fisheries management and conservation, aquaculture and compliance. Moreover, the Commission adopted the revised GFCM Rules of Procedure and approved the proposal for the appointment of the new GFCM Executive Secretary. Finally, the Commission adopted its programme of work for the next intersession and approved its autonomous budget for 2023, 2024 and 2025, as well as a number of strategic actions to be funded through extrabudgetary resources. The Commission also endorsed the new Bureau of the Committee on Administration and Finance and extended the mandate of the Bureau of the Scientific Advisory Committee on Aquaculture until 2024.

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