985 resultados para Payne, John Howard, 1791-1852.


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Life table analyses have been developed to understanding the impact of various sources of intrinsic and extrinsic mortalities on the rate of population growth. The understanding of the population increase of the parasitoids related to their hosts is important in biological control programs. This work had as objective to evaluate the survival and fertility of the parasitoid Lysiphlebus testaceipes (Cresson, 1880) on Schizaphis graminum (Rondani, 1852) as a host under fertility life table. The experiment were carried out in a climatic chamber at 25 ± 1ºC, RH 60 ± 10% and 10h photophase. To determine the immature mortality, the development time and the sex ratio of the parasitoid, 12 females of the parasitoid (less than one day old) and 240 nymphs of S. graminum (3 days old) were used. To evaluate the longevity and fertility of L. testaceipes, 15 females (less than one day old) were used. Nymphs of S. graminum (3 days old) were offered for each parasitoid female daily, until the female died, being in the 1st day - 300 nymphs; 2nd day - 250 nymphs; 3rd day - 200 nymphs; 4th day - 150 and in the other days a number of 50 nymphs. L. testaceipes had an immature mortality of 22,2%, and a development time of males and females of 9.0 and 9.1 days, respectively. The females of L. testaceipes laid, in it first life day, 257.8 eggs, and they survived up until seven days. The net reproduction rate (Ro) and the intrinsic rate of increase (r m) were respectively, 301.9 and 0.513. The finite rate of increase (l) was 1.67 females per day, the mean length of a generation (T) was 11.13 days and the time to duplicate the population (TD) was 1.35 weeks. The parasitoid L. testaceipes have a high potential of population growth on S. graminum as a host under the analyzed conditions.

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Braderochus hovorei sp. nov. proveniente da Colômbia (Boyacá) é descrita e figurada. Nova sinonímia: B. shuteae Bleuzen, 1994 = B. dentipes (Chemsak, 1979) comb. nov.

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The historiography dedicated to tourism has emphasised how some socio-economic evolutions such as urbanisation, mechanisation of transport or the advent of leisure time in society have supported pleasure trips and therefore the development of the hotel industry. On the contrary, the research has too often neglected or at least minimised the impact of the hotel sector on a region's development. This contribution seeks to fill this gap by analysing the Geneva Lake region, one of the most important birthplaces of the European tourism. In this space not much touched by the first industrial revolution, the hotel business has in fact played the role of an economic motor, stimulating investment and employment. This dynamism provoked a domino effect on several other sectors of the economy (industry, bulding sector, banking). To please their customers, the hoteliers have not only given impulses on housing modernisation, but also to the revitalisation of transport, energy and communication networks. The necessity to remain on the state-of-the-art of technical issues, with the concern of competitiveness, has called forth an acceleration of the technology transfer and stimulated the constitution of technical know-how.

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A avaliacão do projecto do recursos hidricos do Tarrafal (Cabo Verde ) tem por base dois objectivos: 1) Cumprir as obrigag8es do contrato, o qual roquor uwa avaliação.o final, a 2) Sujeitar-se aon requisitos da CID pars a avaliação final. Desta formal a extenslo deta avaliaqlo 6 male quo ura simples rovialo, reopondendo a obrigaqos do contracto. Esta avaliagKot tern por fim estimar a forma coo o projecto atinglu ou doixou do atingir os objectivos propostos. An recomendaga4s quo safram desta avalia qio dovem sorvir para melhorar os projectos om andamento quo integram no sistema da CID. Ambos o fundos da CID o do contracto foram utilizados nesta avaliaqlo Os pontos apresentados nests documento slo da equipe do avaliaqlo o n~o representan necessariamente 0s da Administraqlo o/ou do Executivo da CID. B. A.VLICrUi)Z DA Ai1ALIAj!O Todo o projecto do Recurnos Hfdricos do Tarrafal eat inserido dontro do pris1m desta avalia.lo. Zbora outrou relatdrios tenham servido do fontes do infor=qlo, a proeantj oxamina o projecto dead. o porfodo da preparaqEo at o trmino C. EQU!!' DE AYALIACKO A equioe roi Joloeada polo Dean ( tipo do reitor do faculdads )# Director da Cemara don Adminintradoras da CID Dr. drnont Briskoyp o polo Director do Executivo, Dr. John L. Fiecher. A avaliaqgo foi orientada pole repartiglo do Executivo da CID. 0 Dr. Barry Re. Baintonp agents director do projectop coordenou o processo do avaliaqEo. 0 Dr. Gerald 3stlockq director do programus Internacionais do agricultura na Universidade do Arizonap foi selocionado coo lider da equips . 0 Dr. Howard Peterson, professor do agriculture • ongenharia do irrgaqIo da Universidade do Utah, foi selecionado coma segundo mumbro da equips. 0 Dr. Peterson ji tinha cumprido dues misses no projecto em Cabo Verde. 0 Dr. Jean Ruley Kearns, conselheiro director da CID no poriodo do 1982-83p fot selecionado comc sondo o tarceiro membro da equipe. D. ATODO DE AVALIAQXO Os pianos proliminares para conduzir a avaliaqo foram feitos numa rounibo inicial em Tucson ( Arizona ) a 5 do novembro do 1982. Nessa rounilo foi deci dido quo o Dr. Matlock visitaria o projecto durante o afs do novembro do 1982. A visita fot planojada do forma a coincidir com a presenga do Kern Stutlor, director coordenador do projectop quo devoria astar am Cabo lirde nessa data co.mpletando os trabalho a preparando o relat6rio final. Uma c6pia do Procasio do Avaliaglo pola AID assim como cdpias do relatdrios anteriores a outros docunontos rolevantea foram diatribufdos aos membros da equips duranto a reunigo inicial. Oa docu ientos examinados polos membros da equip. encontram-se listados na secção /III, Referiencias