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Economics of Controlling Vertebrate Wildlife: the Pest-Asset Dichotomy and Environmental Conflict AgEcon
Tisdell, Clement A..
Some wildlife species are agricultural pests (or otherwise a problem) but their populations are often valued by other than agriculturalists or by those not adversely affected by them directly. For non-farmers, the population levels of such wildlife are frequently pure public goods. This is one source of market failure in the economically optimal social control of an (agricultural) pest of this type. Secondly, if the species is geographically mobile, externalities occur between farmers (or other individuals) in the control of the species, and individuals ignore these spillovers in controlling pest species. Simple analysis is used to show that depending on the relative strength of these opposing types of market failure, farmers (or others) may excessively...
Tipo: Working Paper Palavras-chave: Agriculture; Market failure; Pest control; Pure public goods; West Bengal; Wildlife; Zoonoses.; Environmental Economics and Policy.
Ano: 2011 URL: http://purl.umn.edu/122727
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First report of narrow brown leaf spot disease of rice in West International Rice Research Institute
Biswas, A..
p.35
Palavras-chave: Fungal diseases; Cercospora janseana; Plant pathogenic fungi; Leaf spotting; Leaves; Symptoms; Disease distribution; Geographical distribution; West Bengal; India.
Ano: 2003 URL: http://hdl.handle.net/123456789/1242
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Gender Inequality in India: Evidence from a Rural Survey in West Bengal AgEcon
Tisdell, Clement A..
Notes the unfavourable female-male ratio in India and its declining trend. In addition, the convergence of this ratio for the scheduled castes towards that of the general casts is noted as well as the slight decline in this ratio for scheduled tribals. A reason for this trend is suggested. Gender inequality is explored by summarising the results of survey of wives in the Midnapore area of West Bengal. Wives in four villages were interviewed so as to include tribals (Santals) and non-tribals, all of whom were Hindus. The socio-economic characteristics of those interviewed are first summarised and general information provided about the survey. The results are then used to consider several aspects of inequality in relation to sons and daughters, to gauge the...
Tipo: Working or Discussion Paper Palavras-chave: Gender inequality; Castes; Santal; West Bengal; Community/Rural/Urban Development; Labor and Human Capital.
Ano: 2000 URL: http://purl.umn.edu/100037
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RAPD fingerprinting of the ornamental fish Badis badis (Hamilton 1822) and Dario dario (Kullander and Britz 2002) (Perciformes, Badidae) from West Bengal, India Genet. Mol. Biol.
Brahmane,Manoj P.; Mitra,Krishna; Mishra,Sudhanshu S..
We used random amplification of polymorphic DNA (RAPD) to generate species-specific diagnostic fragment patterns for the molecular identification of the ornamental aquarium fish species Badis badis and Dario dario. Seven arbitrary oligodecamer primers produced a total of 116 bands of which 98.23% were polymorphic. The size of the amplified products was in the range 340 bp to 2170 bp. Intraspecies genetic similarity was 0.879 ± 0.023 for B. badis and 0.840 ± 0.014 for D. dario while interspecies genetic similarity was 0.602 ± 0.017, with cluster analysis displaying separate taxonomic and evolutionary status for these fish. The results show that RAPD was useful for the molecular identification of aquarium fish species, with morphological traits also being...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Badis badis; Dario dario; Diagnostic markers; RAPD molecular identification; West Bengal.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400028
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