Model-based Regional Assessment of Water UseAn Example for Semi-arid Northeastern Brazil

This study aimed to evaluate the infection rates of snakes by pentastomids in the semi-arid region of Brazil. Fifteen snakes (four Micrurus ibiboboca (Merrem, 1820) and eleven Philodryas nattereri Steindachner, 1870) were collected between January and April of 2005, in the municipality of Crato (07° 14' S and 39° 24' W), State of Ceará, Brazil. Laboratorial analysis of the respiratory tracts of the sampled snakes indicated differences in host infection rates: four individuals of P. nattereri (36.4%) were infected by Cephalobaena tetrapoda Heymons, 1922 (mean infection intensity 1.5 ± 0.28, 1-2) and three specimens (27.3%) by Raillietiella furcocerca (Diesing, 1863) (2.3 ± 1.32, 1-5). Only one individual of M. ibiboboca (25%) was infected by a non-identified species of Raillietiella sp. These are the first data on pentastomid infection in snakes in Northeastern Brazil and both snake species comprise new host records for the pentastomids. The results also indicate that the generalist parasites C. tetrapoda and R. furcocerca share their definitive hosts.

Download Full-text

Development and evaluation of a sorghum model based on CERES-Maize in a semi-arid tropical environment

Field Crops Research ◽

10.1016/0378-4290(90)90023-5 ◽

1990 ◽

Vol 24 (1-2) ◽

pp. 87-104 ◽

Cited By ~ 24

Author(s):

C.J. Birch ◽

P.S. Carberry ◽

R.C. Muchow ◽

R.L. McCown ◽

J.N.G. Hargreaves

Keyword(s):

Tropical Environment ◽

Model Based ◽

Semi Arid

Download Full-text

Review of “Empirical and model-based estimates of spatial and temporal variations in net primary productivity in semi-arid grasslands of Northern China” by Zhang et al.

10.5194/hess-2016-631-rc1 ◽

2017 ◽

Author(s):

Anonymous

Keyword(s):

Primary Productivity ◽

Net Primary Productivity ◽

Northern China ◽

Temporal Variations ◽

Spatial And Temporal Variations ◽

Model Based ◽

Arid Grasslands ◽

Semi Arid

Download Full-text

THERMAL CHARACTERIZATION OF THE FAVELONE DERIVATIVES (CNIDOSCOLUS QUERCIFOLIUS) BY THERMOGRAVIMETRY AND DIFFERENTIAL SCANNING CALORIMETRY

Periódico Tchê Química ◽

10.52571/ptq.v3.n05.2006.janeiro/1_pgs_8_20.pdf ◽

2006 ◽

Vol 05 (3) ◽

pp. 8-20

Author(s):

José Carlos Oliveira SANTOS ◽

Lionete Dantas NUNES ◽

Sylvia Berenice NÓBREGA ◽

Dantas José Pires PUZINSKI ◽

Antonio Gouveia SOUZA

Keyword(s):

Differential Scanning Calorimetry ◽

Arid Region ◽

Agricultural Practices ◽

Thermal Characterization ◽

Northeastern Brazil ◽

Scanning Calorimetry ◽

Semi Arid Region ◽

Derivatives Of ◽

Semi Arid

A thermal analysis has been applied to characterization of food and food products. Taking into account the problems of desertification and agricultural practices able to provide income to the population at the semi-arid region of Northeastern Brazil, this work presents the results of the chemical, thermal and kinetic characterization by thermogravimetry and differential scanning calorimetry of the seed derivatives of favelone (cnidoscolus quercifolius), aiming at the application of these materials as an alternative of food source for animals and for the human population at this brazilian region.

Download Full-text

Prevalence of paralytic shellfish poison-producing Planktothrix agardhii and Cylindrospermopsis raciborskii in a Brazilian semi-arid reservoir

Acta Limnologica Brasiliensia ◽

10.1590/s2179-975x5014 ◽

2015 ◽

Vol 27 (2) ◽

pp. 238-246 ◽

Cited By ~ 4

Author(s):

Ismael Keslley Carloto Lopes ◽

Mario Ubirajara Gonçalves Barros ◽

Carlos João Pestana ◽

José Capelo Neto

Keyword(s):

Drinking Water ◽

Water Supply ◽

Drinking Water Supply ◽

Northeastern Brazil ◽

Cylindrospermopsis Raciborskii ◽

Planktothrix Agardhii ◽

Paralytic Shellfish Poison ◽

Paralytic Shellfish ◽

Three Samples ◽

Semi Arid

Aim: The present study aimed to investigate the composition and toxicity of the phytoplankton in Sítios Novos reservoir, used mainly as drinking water supply for approximately 30,000 people.MethodsSamples were collected between January 2010 and June 2011.ResultsDuring this period 19 taxa of cyanobacteria and 22 of algae were identified. Out of 45 samples collected, algae accounted for no more than 10% of the quantified organisms in 44 samples. Cyanobacteria accounted for 100% of the organisms quantified in three samples and for 99% in other 29 samples. Among the cyanobacteria group, Planktothrix agardhii (Gomont) Anagnostidis & Komárek and Cylindrospermopsis raciborskii (Woloszynska) Seenaya & Subbaraju prevailed and both strains were isolated and identified as paralytic shellfish poison (PSP) producers. C. raciborskii strain has shown to produce SXT and dcSXT while P. agardhii strain has shown to produce dcGTX2 or 3.ConclusionsTo the author’s knowledge, this is the first report of PSP-producer cyanobacteria species isolated in Northeastern Brazil and the first reported of a P. agardhii synthesizing dcGTX2/3.

Download Full-text