1.

Record Nr.

UNINA9910454925303321

Autore

Rocha Maria J

Titolo

Fish Reproduction

Pubbl/distr/stampa

Boca Raton, FL : , : CRC Press, , 2008

ISBN

0-429-09416-7

1-4398-4239-6

1-281-73682-1

9786611736828

1-57808-557-8

Edizione

[First edition.]

Descrizione fisica

1 online resource (644 p.)

Disciplina

573.6/17

Soggetti

Fishes - Reproduction

Electronic books.

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia

Note generali

Description based upon print version of record.

Nota di bibliografia

Includes bibliographical references and index.

Nota di contenuto

""Preface""; ""Contents""; ""List of Contributors""; ""1. Oogenesis: Post-vitellogenic Events Leading to a Fertilizable Oocyte""; ""Introduction""; ""Control of Meiosis Resumption and Ovulation: The Global Picture""; ""The Importance of Post-Vitellogenic Events in the Determinism of Egg Quality""; ""Pre-Ovulatory Ovarian Follicular Differentiation: New Insights from Recent Ovarian Gene Expression Studies""; ""References""; ""2. Physiological Function of Gonadotropins in Fish""; ""Introduction""; ""Gonadotropic Regulation of Testicular Function""

""Gonadotropic Regulation of Ovarian Function""""Mechanism of Action of Fish Gonadotropins""; ""Conclusions and Future Directions""; ""References""; ""3. Gonadal Steroids: Functions andPatterns of Change""; ""Introduction""; ""Steroid Hormone Synthesis""; ""Modes of Steroid Action and Clearance""; ""Actions of Steroid Hormones""; ""Patterns of Change""; ""Summary""; ""References""; ""4. Vitellogenesis""; ""Introduction""; ""Components of Vitellogenesis""; ""Vitellogenin""; ""Choriogenins""; ""Hyosophorin""; ""Summary""; ""References""; ""5. Follicular Steroidogenesis in Fish""

""Introduction""""Reproductive Characteristics of Fish""; ""Steroidogenesis in the Vitellogenic Follicles""; ""Steroidogenesis in the



Maturing Follicles""; ""MIH Receptor""; ""Steroidogenic Shift""; ""Conclusions""; ""References""; ""6. Hormonally Derived Sex Pheromones in Fish""; ""Introduction""; ""Order Cypriniformes""; ""Order Salmoniformes""; ""Order Perciformes""; ""Hormonal Regulation of Hormonal Pheromone Functions""; ""Hormonal Pheromones and the Issue of Species Specificity""; ""References""; ""7. Reproductive Physiology in Viviparous Teleosts""; ""Introduction""; ""Poeciliidae""

""Zoarcidae""""Scorpaenidae""; ""Conclusion""; ""References""; ""8. Mating Systems in Fishes""; ""Introduction""; ""Defining Mating Systems""; ""Monogamy""; ""Polygamy""; ""Mating System Determinants""; ""References""; ""9. Reproductive Strategies of Fish""; ""Release of Offspring""; ""Oviparity""; ""Viviparity""; ""Spawning Types""; ""Special Breeders""; ""Gonochorism and Sex Change""; ""References""; ""10. Energetic Trade-offs in Reproduction: Cost-Benefit Considerations and Plasticity""; ""Introduction""; ""Allocation of Energy Resources in Reproduction""

""Male and Female Allocation Patterns""""When to Reproduce?""; ""Reproductive Energy Compartments""; ""Conclusion""; ""References""; ""11. The Influence of Reproductive Behaviour on the Social Organization of Shoaling Fish""; ""Overview""; ""The Costs and Benefits of Group Living""; ""Indirect Effects of Reproduction on Social Organization""; ""Direct Effects of Reproduction on Social Organization""; ""Ecological and Evolutionary Implications""; ""References""; ""12. Parental Care and Predation Risk in Fish�Defend, Desert or Devour""; ""Introduction""; ""Predation Risk of Parent""

""Adaptations in Parent Behaviour to Avoid being Eaten""

Sommario/riassunto

"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"--Provided by publisher.



2.

Record Nr.

UNINA9910896555703321

Autore

Meth Paula

Titolo

Living the urban periphery : infrastructure, everyday life and economic change in African city-regions / / Paula Meth, Sarah Charlton, Tom Goodfellow and Alison Todes ; with Divine Asafo [and 7 others]

Pubbl/distr/stampa

Manchester University Press, 2024

ISBN

9781526171207

1526171201

9781526171221

1526171228

Soggetti

Suburban life - Ethiopia

Suburban life - South Africa

Urbanization - Ethiopia

Urbanization - South Africa

Regional planning - Ethiopia

Regional planning - South Africa

Lingua di pubblicazione

Inglese

Formato

Materiale a stampa

Livello bibliografico

Monografia