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Mediterránea Serie de Estudios Biológicos
Article . 1981 . Peer-reviewed
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Sobre nidos aéreos de rata negra, Rattus rattus (Linnaeus, 1758), en el naranjal saguntino (Valencia)

Authors: Faus Percha, Félix Vicente; Vericad Coromina, Juan Ramón;

Sobre nidos aéreos de rata negra, Rattus rattus (Linnaeus, 1758), en el naranjal saguntino (Valencia)

Abstract

El estudio de diversos aspectos ecológicos sobre la nidificación aérea de rata negra, R. rattus, en una parcela de naranjales del municipio de Sagunto (Valencia, España) muestra una tendencia de la especie a nidificar en este tipo de cultivo. Los nidos aéreos, de forma generalmente esférica, han presentado una composición cualitativa uniforme a base de ramilletes con hojas y hojas sueltas procedentes de los mismos naranjos; su utilización como lugar de parto y cría así como refugio individual y social es evidente. No obstante, R. rattus puede instalarse en nidos de gorrión, Passer domesticus, y mirlo común, Turdus merula, para usarlos como comederos y camas ocasionales, respectivamente. La tendencia a construir nidos con la misma orientación, preferentemente al Sur, no varió estacionalmente. Tanto el tamaño de los nidos como su orientación y situación espacial definida por las coordenadas respecto al árbol y al suelo vendrían determinados por la necesidad de conseguir un microclima favorable. La distribución espacial de los nidos resultó ser contagiosa tanto para el total de datos como para cada época del año, presentándose dos niveles de agregación diferentes que variaron según las estaciones. La construcción de nidos subterráneos, o madrigueras, junto a la de los nidos aéreos, se entiende como solución alternativa para aumentar la supervivencia de la especie, pues ambos son de uso complementario.

A study of the aerial nesting of the black rat, Rattus rattus, in orange groves at Sagunto (Valencia, Spain) shows a preference of this species to nest in this kind of tree. The aerial nests, commonly spherical in shape, have uniform qualitative composition. They are made of small leafed branches and loose leaves from the same orange tree. It is evident that they are used for the birth and rearing of the young as well as individual and social shelter. R. rattus also occupies house sparrow (Passer domesticus) and blackbird (Turdus merula) nests, which are used occasionally as eating and resting places. There is a tendency to build the nest in the south part of the tree, and this does not vary seasonally. The size of the nests and their position in the tree (nest orientation and its spatial location defined by the coordinates to the tree axis and the ground) may be chosen to provide a favourable microclimate. The distribution of the nests within the grove appears to be contagious for the total year data, and for every season separately, at two different levels of aggregation. The size of clumps vary according to the season at both levels. The alternative use by this species of underground nests close to the tree-nests is considered to increase the survivorship of individuals.

Country
Spain
Related Organizations
Keywords

Nidos aéreos, Aerial nests, Orange grove, Rata negra, Sagunto, Black rat, Naranjal, Rattus rattus

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
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