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Slugs and snails are part of the great Phylum Mollusca, a group that contains creatures as varied as the fast-moving squid or the sedentary clams, cockles and mussels. The largest group, however, are the gastropods, animals originally with a single foot and a single coiled shell.
An exciting new series that tells you everything you need to know about each minibeast using dramatic close-up photographs and annotated artwork. Using an eye-catching and fun approach, each title examines the creature's lifecycle, habitat and feeding habits, as well as giving extra information on the different species and their characteristics. The series provides opportunities for investigation as each of the minibeasts chosen can be found in the local environment and it also encourages use and understanding of relevant vocabulary.
Terrestrial mollusks, the second largest phylum in the animal kingdom, are vitally important to the earth's ecology. With the publication of Land Snails and Slugs of the Pacific Northwest, a definitive and comprehensive guide to snails and slugs of Oregon, Washington, Idaho, and western Montana is finally available. Primarily an identification guide, this richly illustrated volume offers complete information on the range of terrestrial mollusk shapes, sizes, and characteristics. It presents an overview of their habitat requirements as well as details of land snail and slug ecology, collection and preservation methods, and biogeography. Land Snails and Slugs of the Pacific Northwest is an essential reference for biologists, horticulturalists, gardeners, and naturalists, and anyone wishing to identify species in the field. * Identification keys and species accounts for most of the 245 taxa of terrestrial slugs and snails in the region * 280 full-color photographs of 155 species and subspecies * Range maps for most species
This monograph on pest slugs and snails reviews the problems they create as plant pests in horticulture, agriculture, and forestry, and also as intermediate hosts for parasitic trematodes, cestodes and nematodes which cause worm diseases in man and domestic animals. Here only those vector snails which inhabit flooded or constantly irrigated fields, water storage reservoirs or farm ponds are considered. Reference is also made to the role of pulmonates as carriers of the agents of disease - viruses, bacteria, fungi and worms' eggs, which may be transmitted to man with inadequately cleaned vegetables and fruit. The use of molluscs as indicators of chemical pollution of soil and water, methods of mass rearing of experimental animals and also marking methods are all discussed, as are threshold limit, critical number and the prognosis of damage in plant protection. A classification, an identification key and a systematic check-list of both pest slugs and snails and their predators are provided. The book reviews the biology, physiology, metabolism, reproduction and dispersal of freshwater and terrestrial gastropods, and also the ecological factors which allow a population explosion to occur, thus increasing the likelihood of damage to crops, or the spread of worm diseases of man and domestic animals. The interaction of parasitic worm larvae and their snail hosts is also discussed. These aspects all form an essential basis for the resolution of problems of control.
Do you think that you could lessen or overcome your feelings of depression if only you had the right tools? Are you ready to help yourself stop feeling depressed? If so, then you've found a powerful resource. The Cognitive Behavioral Workbook for Depression is a complete, comprehensive, step-by-step approach you can use, on your own or working w...
Garden Myths examines over 120 horticultural urban legends. Turning wisdom on its head, Robert Pavlis dives deep into traditional garden advice and debunks the myths and misconceptions that abound. He asks critical questions and uses science-based information to understand plants and their environment. Armed with the truth, Robert then turns this knowledge into easy-to-follow advice. - Is fall the best time to clean the garden? - Do bloom boosters work?- Will citronella plants reduce mosquitoes in the garden?- Do pine needles acidify soil?- Should tomatoes be suckered?- Should trees be staked at planting time? - Can burlap keep your trees warm in winter?- Will a pebble tray increase humidity for houseplants? "Garden Myths is a must-read for anyone who wants to use environmentally sound practices. This fascinating and informative book will help you understand plants better, reduce unnecessary work, convince you to buy fewer products and help you enjoy gardening more."
The islands of the Samoan archipelago lie about 14 degrees south of the equator in the central Pacific Ocean. Politically, they are divided into two groups: Samoa (formerly Western Samoa), an indepedent state and American Samoa, a territory of the USA. The islands have been formed as a result of complex volcanic activity; they are geologically young. While many of the plants and birds of the Samoan Islands are found elsewhere in the Pacific, many of the snail species are found nowhere else on Earth. This guide is intended to permit identification of mos of the terrestrial snails, and slugs of the Samoan Islands. It is intended to be accessible to the amateur naturalist but also to provide the experienced scientist with a compact resource of information. The guide covers both the native species and the non-native, introduced species, which are generall more frequently encountered, especially at low elevations and in habits disturbed by human activities.
A young snail faces many challenges as it tries to grow safely into an adult. All the facts a young child needs to understand the life of this intriguing backyard creature are packed into Backyard Books: Are You a Snail? by Judy Allen with illustrations by Tudor Humphries.
