Incluye glosarioEl libro trata en las 5 primeras ideas la caracterización y elementos de los argumentos y el uso de las pruebas. En las 5 siguientes la argumentación en diferentes contextos: explicaciones causales, cuestiones sociocientíficas, argumentación oral y escrita y cómo promoverla y evaluarla en el aula. El libro esta dirigido al profesorado que se centra en que los alumnos razonen las respuestas.CataluñaBiblioteca de Educación del Ministerio de Educación, Cultura y Deporte; Calle San Agustín 5 -3 Planta; 28014 Madrid; Tel. +34917748000; biblioteca@mecd.esES

Dillon, Aoife B.

Ennis, Darragh E.

Griffin, Christine

Grooming and avoidance of contaminated areas are among the behavioural defences employed by

animals against parasites. Antiparasite defence behaviour is costly in terms of time, energy and/or food

foregone and therefore animals are expected to modulate their defences depending on the risk of attack

and/or the severity of the symptoms caused.We tested the hypothesis that an insect host invests more in

defence against more virulent (more likely to cause death) than less virulent parasites. We tested

avoidance and grooming of adult pine weevils, Hylobius abietis, in response to infective juveniles of two

species of entomopathogenic nematodes, the more virulent Steinernema carpocapsae and less virulent

Heterorhabditis downesi. Weevils avoided feeding on a substrate contaminated with S. carpocapsae but

not H. downesi. Weevils also groomed more when their bodies were contaminated with S. carpocapsae

than either H. downesi or water. We also made direct observations of nematodes on weevils. When equal

numbers of nematodes were applied to weevils more S. carpocapsae than H. downesi moved actively on

the weevil’s cuticle. Thus, the differential response of weevils to the two nematode species can be

explained by the weevils detecting the more aggressive behaviour of S. carpocapsae than H. downesi,

which corresponds to a higher probability of death

Competencias en argumentación y uso de pruebas : 10 ideas clave

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