Association of Pseudomonas anguilliseptica infection with 'winter disease' in sea bream, Sparus aurata L.   总被引：1，自引：0，他引：1  

A. Doménech  J. F. Fernández-Garayzábal  J. A. García  M. T. Cutuli  M. Blanco  A. Gibello  M. A. Moreno  L. Domínguez 《Journal of fish diseases》1999,22(1):69-71

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Could trunk diameter sensors be used in woody crops for irrigation scheduling? A review of current knowledge and future perspectives   总被引：3，自引：0，他引：3  

M.F. Ortuño  F. Moreno  D.S. Intrigliolo  C.D. Mellisho  R. Domingo  M.C. Ruiz-Sánchez  J. Casadesus  A. Torrecillas 《Agricultural Water Management》2010,97(1):1-35

The use of trunk diameter fluctuations and their derived parameters for irrigation scheduling in woody crops is reviewed. The strengths and weaknesses of these continuously measured plant-based water stress indicators compared with other discretely measured indicators for diagnosing plant water status in young and mature trees are discussed. Aspects such as sensor reading variability, signal intensity and the relationship between trunk diameter fluctuations and plant water status are analyzed in order to assess their usefulness as water stress indicators. The physiological significance of maximum and minimum daily trunk diameter and maximum daily trunk shrinkage (MDS) are also considered. Current knowledge of irrigation protocols and baselines for obtaining maximum daily trunk shrinkage reference values is discussed and new research objectives are proposed. We analyze the response of woody crops to continuous deficit irrigation scheduled by maintaining MDS signal intensity at threshold values to generate mild, moderate and severe water stress and assess the possibility of using linear variable displacement transducer (LVDT) sensors in trunk as a precision tool for regulated deficit irrigation scheduling. Finally, the possibility of using MDS signal intensity as a tool to match the irrigation regime to tree water requirements is also reviewed.  相似文献   

Characteristics of Staphylococcus aureus from subclinical bovine mastitis in Brazil   总被引：3，自引：0，他引：3  

C A Lopes  G Moreno  P R Curi  A F Gottschalk  J R Modolo  A Horacio  A Corrêa  C Pavan 《The British veterinary journal》1990,146(5):443-448

A total of 127 Staphylococcus aureus strains isolated from milk samples of cows with subclinical bovine mastitis was examined for biotype, phage pattern, in-vitro antibiotic susceptibilities and ability to produce enterotoxins. The majority of the strains showed features consistent with bovine rather than human origin. All strains were sensitive to the antibiotics tested, except penicillin and streptomycin. Enterotoxigenicity was observed in 6 (4.7%) strains and only enterotoxins A and C were produced.  相似文献   

Developing native fish species for aquaculture: the interacting demands of biodiversity, sustainable aquaculture and livelihoods     

Lindsay G Ross  Carlos A Martinez Palacios  & Ernesto J Morales 《Aquaculture Research》2008,39(7):675-683

Aquaculture continues to be the fastest growing animal production industry and this rate of expansion must continue if aquaculture is to satisfy global demand for fish products in the face of dwindling capture fisheries. The relationship between aquaculture and biodiversity is complex, with examples of positive and negative impacts having been reported. To enable this expansion while avoiding negative impacts from introductions of exotic species, the investigation of indigenous species becomes important and worthwhile.This paper establishes the background to development of new species for culture and describes the example of the Mexican silverside Menidia estor, which has for centuries been the principal species in an artesanal fishery in Lake Pátzcuaro, Mexico. The species is geographically isolated and is unique but is now endangered because of a range of factors including overfishing, environmental degradation and introduction of exotic species. Considerable advances have been made recently in developing a closed reproductive cycle, understanding feeding and small‐scale on‐growing technology for the species. Based on this, a Darwin Initiative programme was developed focused on technology transfer to implement small‐scale pilot on‐growing thus helping to conserve the species and to improve livelihoods. This has allowed successful pilot scale development of aquaculture for the species while at the same time addressing the objectives of the international Convention on Biodiversity.  相似文献