Kirjahaku

The present title "Understanding Aquaculture" has been written for those students interested in careers in diverse fields of biological sciences. It provides a structured approach to learning by covering all the important topics in a uniform, systematic format. The book has been comprehensively designed incorporating recent advances in this fast moving field. It also provides accessible information on plant reproduction in compact form for undergraduate students in biology and related life sciences. It is intelligible to the educated layman, though it deals with some complex ideas. It is an adequate text for all the requirements of students in this area. In addition, busy lecturers who require a quick reference compendium will find it useful, particularly for tutional planning. Simple, yet hopefully clear figures and tables are provided throughout the book.

Animal breeding, as an applied field of population genetics, has a well-developed mathematical foundation that was laid early in its development. Facets of major emphasis in current animal breeding include the utilization of new estimation procedures for random effects, the incorporation of economics in the development of breeding programmes designed for the livestock industry, the verification of theory and testing of breeding schemes using laboratory organisms, the evaluation of new germ plasm available in livestock populations, and the application of breeding principles to the livestock industry. There are real opportunities in animal breeding to serve the current livestock industry.

An enormous variety of creatures inhabit the forest. Some are spectacular, others are hidden somewhere beneath the canopy of countless billions of leaves. The web of interactions between individuals and species is intricate and complex; nothing about a forest is simple, and humans are only just beginning to understand any part of these ecosystems.

Dogs were domesticated from gray wolves about 15,000 years ago. They must have been very valuable to early human settlements, for they quickly became ubiquitous across world cultures. Dogs perform many roles for people, such as hunting, herding, pulling loads, protection, assisting police and military, companionship, and, more recently, aiding handicapped individuals. This impact on human society has given them the nickname 'Man's Best Friend' in the western world. In 2001, there were estimated to be 400 million dogs in the world.

Domestic Animal Diversity covers the spectrum of genetic differences within each breed, and across all breeds within each domestic animal species, together with the species differences. This variety is available for the sustainable intensification of food and agriculture production.

The horse is one of two extant subspecies of Equus ferus, or the wild horse. It is a single-hooved mammal belonging to the taxonomic family Equidae. The horse has evolved over the past 45 to 55 million years from a small multi-toed creature into the large, single-toed animal of today. Humans began to domesticate horses around 4000 BC, and their domestication is believed to have been widespread by 3000 BC. Horses in the subspecies caballus are domesticated, although some domesticated populations live in the wild as feral horses.