Fish Reproduction

Fish Reproduction

Author: Maria J Rocha

Publisher: CRC Press

Published: 2008-01-01

Total Pages: 670

ISBN-13: 1578083311

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With the decline in world fish stocks, our knowledge of fish reproduction has become fundamental. Reproduction is an essential commitment to future generation. It is also a continuous development process throughout ontogeny, requiring energetic, ecological, physiological, anatomical, biochemical and endrocrinological adaptations. The first chapters highlight important issues affecting fish normal ways of reproductive development; details would focus on species living in opposite environments, such as tropical and polar fishes; far related, as teleosts and cartilaginous fishes; and finally, fish having different reproductive strategies. Thereafter, since many fishes live in detrimental environments, mainly induced by the continuous input of xenobiotic substances into waterways, the authors found it highly pertinent to include this topic. Herein, the authors fix their attention on the factors and mechanisms that may well affect reproductionrelated hormonal systems as also on known consequences for fish living i


Freshwater Fishes in Britain

Freshwater Fishes in Britain

Author: Cynthia Davies

Publisher: BRILL

Published: 2021-10-25

Total Pages: 184

ISBN-13: 9004473513

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For most British natural historians, there is one vertebrate order that could well be said to be “out of sight, out of mind.” This is our freshwater fishes, familiar principally only to anglers, those concerned with managing rivers and other waterbodies, and a few research scientists. The results of this project, which ran from 1998-2002, are published here in the form of comprehensive 10km square dot-distribution maps for the 54 species inhabiting England, Scotland, Wales, the Channel Islands and the Isle of Man. These indicate the vulnerability of several of our native British species. Following a wide-ranging introductory chapter, and further chapters on distribution and the history of the project, Chapter 4 comprises the individual species accounts under the headings: Description; Biology and behaviour; Habitat; Distribution in Britain; World distribution; Status; Hybrids and related species; and a final section of the relationship of each species with Man. In addition to a map, each species is illustrated by fine lithographs taken from Francis Day's famous 19th century work, skilfully supplemented by Michael J. Roberts for those species unknown to Day. Chapter 5 covers conservation and management of freshwater fishes and is followed by four Appendices relating to (1) Publications; (2 & 3) Legislation; and (4) Selected websites relating to environmental protection, biodiversity information and fish conservation. The book concludes with a Glossary; a comprehensive Bibliography; and an Index. In his Foreword, Sir John Burnett, Chairman of the National Biodiversity Network Trust, commends this books as “a unique reliable source of clear and comprehensive information that is pleasing both to the mind and to the eyes” and expresses the hope that “it will lead to ... the more effective conservation of this ‘alien race’ in our midst.” A joint project of the Environment Agency, the Centre for Ecology and Hydrology and the Joint Nature Conservation Committee; written by a team of 38 authors and compiled and edited by Cynthia Davies (CEH), Jonathan Shelley (EA), Paul Harding (Biological Records Centre, CEH), Ian McLean (JNCC), Ross Gardiner (Fisheries Research Services) and Graeme Peirson (EA).


Reproductive Biology and Phylogeny of Fishes, Vol 8B: Part B: Sperm Competion Hormones

Reproductive Biology and Phylogeny of Fishes, Vol 8B: Part B: Sperm Competion Hormones

Author: Barrie G M Jamieson

Publisher: CRC Press

Published: 2019-09-12

Total Pages: 552

ISBN-13: 1439843589

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The animals loosely termed fish constitute more than half of all known vertebrate species. There are approximately 27,000 described living species of bony fishes (Euteleostomi = Osteichthyes), about 70 species of hagfishes and some 34 species of lampreys. Approximately 970 species are chondrichthyans, the sharks and their relatives, which were the subject of volume 3 in this series. It is perhaps because fishes live in a buoyant medium, whether it be fresh or sea water, that they show a diversity in body shapes that is unparalleled by other vertebrates. There is also a unique diversity in the modes of reproduction, whether by external or internal fertilization, and this, with the morphology and fine structure of the reproductive system and its components, is the subject of Part A. Part B deals with complementary topics: testes, sperm, and sperm competition; endocrinology of reproduction; pheromones and reproduction; copulatory structures: taxonomic overview and the potential for sexual selection; sexual selection: signaling and courtship; adaptation and evolution of reproductive mode in copulating cottoid species; fertilization; sex determination; parental care; reproduction in relation to conservation and exploitation of marine fishes; Cryopreservation of Gametes; Embryogenesis and Development; and Molecular Genetics of Development.