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Objective. Determination of the population abundance and diet resources of C. livia domestica and in Santiago de Tolú city, Sucre, Colombia. Materials and methods. The work was carried out during 6 months: January-March and September-November of 2015, in dry season and rains season, between the 06:00 and the 08:00 hours, 4 fixed point sampling was used with timed counts; likewise, measurements were taken for the noise levels found in the study area. Results. The total population was 185 individuals, with a total density of 7.71 ind/ha (5.9-9.0). significant difference was obtained (p<0.01) among the 4 studied populations, it was observed that the main feeding source is residuals of human food deposited as urban waste, when comparing the volumes of available waste and the density in each place it is observed that direct relationship exists. Significant populational differences are not determined among the two seasons studied. The levels sound oscillated among 40.3-72.1dB. The calculated density was lower when compared to other studies but higher than the density that has been established as harmful for this species in urban populations. Conclusions. C. livia domestica it is recognized like a species considered urban plague, because it transmits diverse zoonotics diseases, it affects infrastructure and it contaminates foods by means of its excrements, the registration of its density, becomes a high-priority necessity for the public health. [ABSTRACT FROM AUTHOR]

The present work compares the populational state of A. fulica, in an urban area of Sincelejo, Sucre, Colombia in the months of January and July of 2016. Was carried out manual collection, the animals were measured and heavy, were calculates density and maturity state by dissection. Significant differences were determined as well as to individuals number, corporal size and biomass; and the other hand, a possible size of maturity is determined in 31.42 mm in the month of July; a density calculated for January was 0,004 ind/m² and 0,101 kg/ha, for July 0.007 ind/m² and 0.694 kg/ha. It is also argued the influence of the climatic conditions in the analyzed populational variables. The comparatively low values of density indicate that the population still maintains a discrete invasive level. [ABSTRACT FROM AUTHOR]