Welfare and Stressors in Fish: Challenges Facing Aquaculture

Welfare and Stressors in Fish: Challenges Facing Aquaculture
Author: Leonardo Julián Magnoni
Publisher: Frontiers Media SA
Total Pages: 199
Release: 2020-03-26
Genre:
ISBN: 2889636259

Consumers, producers, stakeholders, governmental regulatory agencies and NGOs are becoming increasingly concerned with the conditions in which aquatic organisms are reared worldwide. High demand for fish for human consumption represents a challenge that has to be fulfilled by an ever-growing aquaculture production. In this scenario, animal care over the entire life and production cycle must be guaranteed while avoiding significant economic losses. As a result, research is needed to maximize yields and minimize adverse outcomes by optimizing rearing conditions while keeping in mind the welfare of cultured fish. In this Research Topic we will focus on relevant aspects related to fish response to both biotic and abiotic stressors as a means of improving their welfare, integrating both physiological and behavioral responses. In fish the adaptive responses to rearing may differ depending on several factors, including the characteristics of the stimuli and the intrinsic properties of the species or the selected line. If complete adaptation is missing, the application of single or multiple stimuli may result in a stress response. Stress responses have been linked to systemic adjustments which negatively impacts the immune system of fish, as well as their growth and reproductive performance. Therefore, one of the main interests of this Topic is to understand the allostatic responses of aquatic organisms to several stimuli/ factors that may be present during rearing. An additional focus of this Topic will be on conditions that may improve fish welfare by decreasing the stress response, such as implementing adequate swimming conditions. The focus of the Topic is to contribute to our present knowledge to better understand the physiological response of aquatic organisms, which is central to improving aquaculture practices. Emphasis will be placed on potentially existing interactions between physiological and endocrine pathways to build an overall stress response. Another aspect that will be considered in this Topic is how intraspecific variability may affect the stress response.

Fish Welfare

Fish Welfare
Author: Edward J. Branson
Publisher: John Wiley & Sons
Total Pages: 316
Release: 2008-04-30
Genre: Technology & Engineering
ISBN: 0470698047

Fish have the same stress response and powers of nociception as mammals. Their behavioural responses to a variety of situations suggest a considerable ability for higher level neural processing – a level of consciousness equivalent perhaps to that attributed to mammals. Each chapter of this book has been written by specialists in their field. The subject matter is wide ranging and covers in detail concepts of animal welfare in addition to more specific aspects of fish welfare. Philosophical concepts of welfare are discussed along with more practical areas of fish welfare encompassing all husbandry and management activities that have a potential to affect the welfare of the fish in our care. This book is an essential purchase for fish veterinarians, fish farmers, fish biologists and those involved in the aquaculture industry and its regulation.

Welfare of fishes in aquaculture

Welfare of fishes in aquaculture
Author: Food and Agriculture Organization
Publisher: Food & Agriculture Org.
Total Pages: 18
Release: 2019-08-06
Genre: Technology & Engineering
ISBN: 9251316910

The welfare of fish in aquaculture is of increasing public concern in Europe and thus of growing importance for fish farmers. Although the topic can be regarded as controversial, due in particular to the lack of available knowledge, there is nevertheless an urgent need for fish farmers, authorities and scientists to develop criteria, approaches and practices to monitor and safeguard the welfare of cultured fish. The objective of this document is to provide the opinion of EIFAAC Member institutions– as the reference body in the field of inland fisheries and aquaculture – on how, given the current state of scientific knowledge, fish welfare issues can be integrated into best practice guidelines for fish culture. This report deals with the welfare of farmed finfish and neither addresses capture fisheries, be they commercial or recreational, nor welfare issues related to the culture of crustaceans and molluscs. The report focuses on the welfare issues of on-growing fish while giving little to no attention to larvae/fry and broodstock. Likewise, the report focuses primarily on the culture conditions for farming of fish and gives little attention to welfare aspects related to transport and slaughter. Finally, emphasis is given to the culture of freshwater fish, but marine species are included where appropriate. It is understood that the principal welfare issues are comparable for freshwater and marine fish culture.

The Welfare of Fish

The Welfare of Fish
Author: Tore S. Kristiansen
Publisher: Springer Nature
Total Pages: 518
Release: 2020-07-01
Genre: Science
ISBN: 3030416755

This book investigates how fish experience their lives, their amazing senses and abilities, and how human actions impact their quality of life. The authors examine the concept of fish welfare and the scientific knowledge behind the inclusion of fish within the moral circle, and how this knowledge can change the way we treat fish in the future. In many countries fish are already protected by animal welfare legislation in the same way as mammals, but in practice there is still a major gap between how we ethically view these groups and how we actually treat them. The poor treatment of fish represents a massive animal welfare problem in aquaculture and fisheries, both in terms of the number of animals affected and the severity of the welfare issues. Thanks to its interdisciplinary scope, this thought-provoking book appeals to professionals, academics and students in the fields of animal welfare, cognition and physiology, as well as fisheries and aquaculture management.

Biology of Stress in Fish

Biology of Stress in Fish
Author: Carl B. Schreck
Publisher: Academic Press
Total Pages: 604
Release: 2016-11-01
Genre: Science
ISBN: 0128027371

Biology of Stress in Fish: Fish Physiology provides a general understanding on the topic of stress biology, including most of the recent advances in the field. The book starts with a general discussion of stress, providing answers to issues such as its definition, the nature of the physiological stress response, and the factors that affect the stress response. It also considers the biotic and abiotic factors that cause variation in the stress response, how the stress response is generated and controlled, its effect on physiological and organismic function and performance, and applied assessment of stress, animal welfare, and stress as related to model species. - Provides the definitive reference on stress in fish as written by world-renowned experts in the field - Includes the most recent advances and up-to-date thinking about the causes of stress in fish, their implications, and how to minimize the negative effects - Considers the biotic and abiotic factors that cause variation in the stress response

Fish behaviour and welfare

Fish behaviour and welfare
Author: Pablo Almazan Rueda
Publisher: Frontiers Media SA
Total Pages: 136
Release: 2024-09-19
Genre: Science
ISBN: 283255430X

Fish welfare is currently one of the most important concerns in aquaculture, and knowledge on how to improve fish welfare should be practical and implementable for all aquaculture farms. The objective of this Research Topic is to extend the current knowledge on fish welfare and to identify more comprehensive and practical indicators of the existing standard for fish welfare that are easily, more comprehensive and practical indicators in order to make it easy to implement on fish farms. A secondary objective is to identify which welfare issues are most relevant. It is important to mention that good fish welfare cannot simply be extrapolated from terrestrial animals. It has to take into consideration that different species of fish must also be taken into consideration. Whether these are species of commercial interest or not, they have different behaviour and respond differently to stress, and consequently, require a species-specific approach to improving their welfare. Intensive fish production systems have important negative consequences for the animals including impaired health and erratic behaviour. For many industries, their main goal is to achieve higher production whilst majority of the time, welfare is not take it into consideration. Better conditions for intensively produced farm animals, including fish, should result in improved efficiency and performance and higher quality product for consumers. We welcome papers demonstrating such effects. This research topic is related to the welfare of farmed fish. Fish welfare is related to how we treat our fish: the type of feed, how often we feed them, the stocking density that it is used, the environment where they are growing, how we grow them, from fertilized egg to fish ready to sell for public consumption. This Research Topic should address fish welfare during the whole growth period, and may also include papers on the attitudes and perceptions of stakeholders, including fish farmers and public about fish welfare.

Epigenetics in Aquaculture

Epigenetics in Aquaculture
Author: Francesc Piferrer
Publisher: John Wiley & Sons
Total Pages: 549
Release: 2023-10-02
Genre: Technology & Engineering
ISBN: 1119821916

EPIGENETICS IN AQUACULTURE This essential guide will allow you to understand how new developments in our knowledge of epigenetic mechanisms and epigenetic inheritance can be applied to improve aquaculture production and aquatic resource management and conservation. Epigenetics is the study of heritable changes in gene expression that are independent of alterations in the nucleotide sequence. It integrates genomic and environmental influences to shape the phenotype. Epigenetics is a field with particular relevance to aquaculture and aquatic organisms, since it underpins acclimatory responses to diverse and changing environments and inheritance of desired phenotypes. Epigenetics in Aquaculture provides a comprehensive introduction to epigenetics, epigenetic mechanisms, epigenetic inheritance, and research methods. It also provides the current state of the art on research and development on epigenetics in the major functions of aquatic organisms in the framework of aquaculture production. The fact that aquaculture is the fastest-growing sector of food production makes the book especially timely. Readers will also find: Detailed treatment of subjects including aquatic faunal reproduction, sex determination, growth regulation, nutritional programming, disease resistance, stress response and much more Survey of current research lacunae and the projected future of the discipline An authorial team of internationally renowned experts Epigenetics in Aquaculture is a valuable reference for researchers, biologists and advanced students in any area of marine science, oceanography, aquaculture, environmental science, and food production.

Capture-based Aquaculture

Capture-based Aquaculture
Author: Francesca Ottolenghi
Publisher: Fao
Total Pages: 344
Release: 2004
Genre: Business & Economics
ISBN:

"The aim of this report is to define and review this "semi-aquaculture practice", which has been more accurately named "capture-based aquaculture." -- Preface.

The State of World Fisheries and Aquaculture 2004

The State of World Fisheries and Aquaculture 2004
Author: Food and Agriculture Organization of the United Nations
Publisher: Food & Agriculture Org.
Total Pages: 172
Release: 2004
Genre: Business & Economics
ISBN: 9789251051771

This biennial report sets out a comprehensive review of world fisheries and aquaculture, as well as examining selected policy issues including capture-based aquaculture, labour standards, fisheries management and CITES, trade issues, depleted stocks recovery, deep-water fisheries, production forecasts to 2030, fisheries subsidies, and fishing capacity. Findings include that developments in world fisheries and aquaculture during recent years have continued to follow the trends that were already becoming apparent at the end of the 1990s, with capture fisheries production stagnating, aquaculture output expanding and growing concerns with regard to safeguarding the livelihoods of fishers and the sustainability of both commercial catches and the aquatic ecosystem from which they are extracted.

Foodomics

Foodomics
Author: Jorge Barros-Velázquez
Publisher: Royal Society of Chemistry
Total Pages: 515
Release: 2021-03-31
Genre: Science
ISBN: 1788018842

Presents the most updated information on the main methodologies and technological platforms involved in foodomics.