منابع مشابه
Population and Social Biology of Free-Ranging Dogs, Canis familiaris
Population size and density, age structure, survivorship patterns, sex ratios, social organization of urban, rural, and feral dog (Canis familiaris) populations were examined in Cd. Juarez, Mexico (urban site) and on the Navajo reservation (rural and wild sites) between June 1983 and December 1984. Urban and rural dogs were less social than expected whereas dogs characteristically lived in pack...
متن کاملSocial Biology and Welfare
family life in different types of community. Chapters 10 and 11 give an account of the development of social work in the colonial empire, and include discussion of some current problems of social hygiene. The final portion of the book consists of a useful handbook on 25 social problems, including trends of population, illegitimacy, care of children, old people, mental health, prostitution, writ...
متن کاملPoPulation Biology and SuPPreSSion ProSPectS
Introduction Bactrocera latifrons (Hendel) is a tephritid fruit fly native to South and Southeast Asia (White and Elson-Harris 1992). First detected in Hawaii in 1983 (Vargas and Nishida 1985a), it primarily infests fruits of solanaceous plants but has also been found to infest fruits of some species of cucurbitaceous plants in Hawaii (Harris et al. 1991, 1993, White and ElsonHarris 1992, Liqui...
متن کاملLegume biology: the basis for crop improvement
Legumes represent the most valued food sources in agriculture after cereals. Despite the advances made in breeding food legumes, there is a need to develop and further improve legume productivity to meet increasing food demand worldwide. Several biotic and abiotic stresses affect legume crop productivity throughout the world. The study of legume genetics, genomics andbiology are all important i...
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ژورنال
عنوان ژورنال: Nature
سال: 1939
ISSN: 0028-0836,1476-4687
DOI: 10.1038/144521a0