Nematofauna asociada a ecosistemas de guadua (Guadua angustifolia kunth) y bosque secundario en Santágueda, Palestina, Caldas.

Abstract

Nematodes are part of the soil food webs with decomposers, micophages, bacteriophages, predators and plant parasitic; when there are disturbance and pollution of soil affect the same populations of these trophic groups, which are used to assess the health and quality of ecosystems. The goal of this research was to identify and create a photographic record of the nematode communities inhabiting forest and bamboo ecosystems in the Montelindo farm of the Universidad de Caldas. In these ecosystems, root and soil samples were collected using GPS receiving equipment, allowing to generate a grid of georeferenced sampling taking samples every 15m. Later, in the laboratory of Plant Pathology at the same university was nematodes extracted by centrifugation and flotation in sugar method. The ecosystem of bamboo had the most high biodiversity with nematodes fauna, and there were identified as 29 genera of nematodes of the Secernentea class, located in Aphelenchida, Monhysterida, Rhabditida and Tylenchida orders, and Adenophorea class, located in Araeolaimida, Dorylaimida and Triplonchida orders; likewise in the forest ecosystem found 26 genera of nematodes, mostly belonging to the Secernentea class, located in Aphelenchida, Rhabditida and Tylenchida orders, and to a lesser proportion in class Adenophorea located in the Chromadorida, Dorylaimida and Triplonchida orders. The trophic group with 46% of plant parasitic nematodes predominated in both ecosystems, followed by bacteriophage, micophage and predatory with 40%, 13% and 1.5% respectively, showing that these ecosystems are rich in diversity of nematodes fauna.

Keywords:

Nematodos micófagos

bacteriófagos

depredadores y fitoparásitos

micophages

bacteriophages

predators and plant parasitic nematodes

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