Download or read book Seasonal Cycles and Reproduction in Sei Whales of the Southern Hemisphere written by Ray Gambell and published by . This book was released on 1968 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Seasonal Cycles and Reproduction in Sei Whales of the Southern Hemisphere written by Ray Gambell and published by . This book was released on 1968 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reproductive Biology and Phylogeny of Cetacea Whales Porpoises and Dolphins written by Debra Lee Miller and published by CRC Press. This book was released on 2016-04-19 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: The order Cetacea comprises some amazing species, representing some of the most evolved creatures that inhabit this earth. Yet, they also represent a group of species for which much remains unknown. There are over 80 species of cetaceans composed of porpoises, dolphins and whales. This volume represents the latest of published and previously unpubl
Download or read book Whales of the Southern Ocean written by Yuri Mikhalev and published by Springer Nature. This book was released on 2020-01-28 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt: Based on actual data of Soviet whaling, and reliable methodologies that existed at the time when this monograph was written, it examines the distribution and migration patterns of whales of the Southern Ocean. It defines distinct populations on the basis of phenes, as well as whale breeding zones, which are located in the adjacent to the Southern Ocean waters at lower latitudes. The book records the presence of a new species of killer whale in the Southern Ocean - Orcinus nana. Prenatal growth patterns, pregnancy and lactation duration, mean sizes of new-born whales are determined. Methods for the graphic recording of registering structures are described, and an original method for their decoding is proposed to determine animal age. The age of sexual and physical maturity, life expectancy is determined. Earlier unknown “pair formations” on the lower jaw of baleen whales and sperm whales are described, together with their macro, histological and electronic microscopic structure. The impact of the extermination of whales on the Southern Ocean ecosystem is examined, recommendations for control of the current state of whale populations are given, and perspectives of whale population recovery are estimated. Regions that could be used as testing areas for whale registration method are defined. The book is intended for biologist-cytologists, ecologists and other specialists interested in cetaceans, and for biology students.
Download or read book Asdell s Patterns of Mammalian Reproduction written by Virginia Douglass Hayssen and published by Cornell University Press. This book was released on 1993 with total page 1036 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since the appearance of the second edition of Sydney A. Asdell's widely used Patterns of Mammalian Reproduction in 1964, the field of reproductive physiology has expanded dramatically. Accordingly, this revision adopts a different structure from previous editions, substituting empirical delineations for physiological interpretations. With the emphases now on a presentation of the published facts of mammalian reproduction, it provides a thorough compilation of what is known about the basic reproductive biology of each of the 4300 mammalian species.To gather information, the authors examined more than 20,000 publications, dating up to 1992. They used primary sources as much as possible, supplementing them with English translations of Russian, Finnish, Chinese, and Japanese journals. The data are presented in taxonomic order. Each familial account summarizes the pattern of reproduction for the family and provides lists of citations arranged by topic of the literature on the endocrinology, reproductive anatomy, and reproductive physiology of the family. Following each account is a tabular listing of species-specific data for neonatal mass and size, weaning mass and size, litter size, age at sexual maturity, estrous cycle length, gestation length, lactation length, number of litters per year, and seasonality of reproduction. For each of these reproductive variables, the range of data gleaned from the literature is given, together with the source of each value listed.Virginia Hayssen is Assistant Professor of Biology at Smith College. Ari Van Tienhoven is Professor of Animal Physiology, Emeritus, at Cornell University. Ans Van Tienhoven assisted in the compilation of data for the book.
Download or read book Biology of the Southern Ocean written by George A. Knox and published by CRC Press. This book was released on 2006-12-13 with total page 637 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1993, The Biology of the Southern Ocean has been referred to as international research at its best and an invaluable reference. Drawing on the considerable volume of information published in the last ten years, this second edition retains the format that made the first edition a popular bestseller, while updating the information
Download or read book Marine Fisheries Review written by and published by . This book was released on 1999 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Physiology written by Solomon Zuckerman and published by Academic Press. This book was released on 2013-10-22 with total page 576 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physiology: The Ovary, Volume II, Second Edition provides an account of the principal aspects of ovarian development, structure and function. The book presents information derived from experimental and chemical studies of the ovary. The articles in the text discuss topics on the control of ovarian development in invertebrates; transplantation of the ovary; ovarian endocrine activities; the relationship of the ovary and the nervous system to behavior; and the nature of environmental variables that alter ovarian function. Physiologists, obstetricians, physicians, and students of medicine will find the book a good reference material.
Download or read book Wildlife Abstracts written by U.S. Fish and Wildlife Service and published by . This book was released on 1954 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mammals in the Seas written by Food and Agriculture Organization of the United Nations. Working Party on Marine Mammals and published by Food & Agriculture Org.. This book was released on 1978 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Marine Mammals written by Peter G.H. Evans and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 629 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest in marine mammals has increased dramatically in the last few decades, as evidenced by the number of books, scientific papers, and conferences devoted to these animals. Nowadays, a conference on marine mammals can attract between one and two thousand scientists from around the world. This upsurge of interest has resulted in a body of knowledge which, in many cases, has identified major conservation problems facing particular species. At the same time, this knowledge and the associated activities of environmental organisations have served to introduce marine mammals to a receptive public, to the extent that they are now perceived by many as the living icons of biodiversity conservation. Much of the impetus for the current interest in marine mammal conservation comes from "Save the Whale" campaigns started in the 1960s by environmental groups around the world, in response to declining whale populations after over-exploitation by humans. This public pressure led to an international moratorium on whaling recommended in 1972 by the United Nations Conference on the Human Environment in Stockholm, Sweden, and eventually adopted by the International Whaling Commission ten years later. This moratorium largely holds sway to this day, and further protective measures have included the delimitation of extensive areas of the Indian Ocean (1979) and Southern Ocean (1994) as whale sanctuaries.
Download or read book Antarctica written by N. Bonner and published by Elsevier. This book was released on 2013-10-22 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: Antarctica, a vast land remote from the other continents and still the least known of them all, provides a unique international laboratory for science. Despite the costs, a growing number of countries are supporting basic scientific research on the continent and in its surrounding seas. Our knowledge of life in this extreme environment, although limited, suggests that it is a key environment for many areas of science. Potential economic developments for food and minerals as well as increasing political complications might jeopardise the present scientific accord in the future. Now is the time to take stock: what do we know about Antarctic ecology? What are the threats and how can they be met? In this volume Antarctic scientists from six countries write about the Antarctic ecosystem.
Download or read book Marine Mammal Protection Oversight written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Fisheries and Wildlife Conservation and the Environment and published by . This book was released on 1974 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Of Seas and Ships and Scientists written by John Gould and published by Lutterworth Press. This book was released on 2010-06-24 with total page 461 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This book captures the excitement of a formative phase of UK science during and immediately following WWII. It links back to scientists working at Antarctic whaling stations and the complimentary voyages of Captain Scott's Discovery that explored the vast icy Southern Ocean, funded by a tax on whale oil. In the depths of WWII a small group of young scientists were brought together under the inspirational leadership of Dr (later Sir) George Deacon, and shortly after the end of the war, the UKis first National Institute of Oceanography was formed. The discoveries from 50 years ago underpin our modern-day science. The bookis chapters are all written and edited by NIO scientists and convey the atmosphere of work at sea in a bygone age before small computers,satellite navigation and easy communication. The book is A useful introduction for students of marine and/or environmental science. It will appeal to many scientists and the general public , to those interested in science and innovation during and after WWII and of course to many living in the Surrey who always wondered what went on in the leafy lanes that were home to NIO and its successors for almost 50 years."
Download or read book The Scientific Reports of the Whales Research Institute written by Whales Research Institute (Tokyo, Japan) and published by . This book was released on 1987 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wildlife Review written by and published by . This book was released on 1967 with total page 854 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Biology and Exploitation of the Minke Whale written by Joseph W. Horwood and published by CRC Press. This book was released on 1989-12-21 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive review includes much recent research material and is the only book exclusively devoted to the minke whale species.The scope of this book focuses on three main topics. The first emphasis is on the population biology of the minke whale. Then, it documents the historical and current exploitation by man. Finally, it evaluates the current size, status, and management of the many worldwide stocks of minke whales. It also includes a description of the birth and death processes that determine how and why the minke whale population varies from time to time. This is an excellent source for specialists in the fields of cetacean biology, population biology, and management of natural resources. Presented in an interesting manner, this work is also appreciated by students and technically interested lay-readers.
