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1.
Braz J Biol ; 73(4): 699-708, 2013 Nov.
Article in English | MEDLINE | ID: mdl-24789384

ABSTRACT

Rhinodrilus alatus is an endemic giant earthworm of the Brazilian Cerrado hotspot used as live bait for about 80 years. The goal of this study was to gather ecological data about this species, which will support the establishment of management strategies. The life history, distribution and abundance of R. alatus were investigated in Cerrado, pastures and Eucalyptus plantation areas following the harvesting activities of the local extractors of this species. We found that this earthworm is abundant in all of the sampled areas, showing its resilience to land-use conversion. The Capture Per Unit Effort was 4.4 ± 5 individuals per 100 metres of transect and 5.6 ± 3 individuals per hour. The earthworm's annual cycle is markedly seasonal, with an aestivation period throughout the driest and coldest season of the year. Significant differences in the length and diameter of the body and in the diameter and depth of the aestivation chambers were found between the juveniles and adults. The distribution range of the species was expanded from two to 17 counties. The life history, abundance, distribution and resilience of R. alatus to certain perturbations are key elements to be considered in conservation and management strategies for this species.


Subject(s)
Life Cycle Stages , Oligochaeta/anatomy & histology , Oligochaeta/classification , Animals , Brazil , Oligochaeta/growth & development , Population Density , Population Dynamics , Seasons
2.
Rev. chil. cardiol ; 8(2): 101-6, abr.-jun. 1989. tab, ilus
Article in Spanish | LILACS | ID: lil-79223

ABSTRACT

Dado que la circulación extracorpórea (CEC) produce cambios en el perfil lipoproteico plasmático, sin que se sepa acerca de su severidad y duración, se lleva a cabo este protocolo en 24 pacientes en un intento de esclarecer y definir el momento más apropiado post cirugía para iniciar una terapia para la dislipidemia, en caso de ser necesaria. Diez casos fueron sometidos a cirugía de puente coronario y 14 a reemplazo valvular; del grupo total 15 eran hombres y 9 mujeres, con una edad promedio de 49.5 +- 13.9 años. En todos se hizo una determinación de colesterol total (ColHDL), relación colesterol total/colesterol HDL. Se tomaron muestras antes, durante CEC, inmediatamente post CEC y a los 3, 10, 30 y 60 días después. En todos los pacientes se encontró un descenso significativo (p<0.008) de ColT, TRG y ColHDL, que fue máximo durante CEC, recuperándose al décimo día (N.S.). Se sugiere que estos cambios pueden deberse a la activación de la enzima lipasa lipoproteina por la heparina, sustracción de lípidos durante CEC, a hemodilución o los tres factores actuando en conjunto. Estos hallazgos apuntan hacia la conveniencia de esperar por lo menos hasta el décimo día post cirugía con CEC para iniciar una terapia para dislipidemia


Subject(s)
Adult , Middle Aged , Humans , Male , Female , Hyperlipidemias/therapy , Extracorporeal Circulation , Prospective Studies
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