Feeding rates of Littorina striata and Osilinus atratus in relation to nutritional quality and chemical defenser of seaweedsReport as inadecuate




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Colaborador: Caballero Ortega, Pascual

???metadata.dc.contributor.other???: Facultad de Ciencias del MarDepartamento de Biología

Materias : Algas marinasEcofisiologíaBurgados (Gasterópodos)

Fecha de publicación : 2001

Fecha de depósito: 8-oct-2009

ISBN : 253162

Tipo de documento: Artículo

En : Marine Biology. v. 138, pp. 1213-1224





Author: Granado Reyes, Inmaculada

Source: https://acceda.ulpgc.es


Teaser



Marine Biology (2001) 138: 1213±1224 DOI 10.1007-s002270100544 I.
Granado á P.
Caballero Feeding rates of Littorina striata and Osilinus atratus in relation to nutritional quality and chemical defenses of seaweeds Received: 5 June 1998 - Accepted: 22 January 2001 - Published online: 24 March 2001 Ó Springer-Verlag 2001 Abstract Algae frequently su€er attack by herbivores and in some cases complete destruction has been observed.
Despite the role of herbivores in structuring marine algal communities, herbivore food choice and the algal traits that herbivores use to choose foods are poorly documented.
There has been much discussion and disagreement regarding the best method of assessing food preference.
Experiments designed to detect preferential feeding involve o€ering a selection of food types to one or more individual consumers.
Ideally, the potential foods are presented simultaneously to the consumer within a single experimental arena so that the consumer has the opportunity to express a dietary choice.
However, some experimental designs allow individual consumers to feed for a constant time on individually presented alternative foods, which permits comparisons of feeding rates on these di€erent foods. Such an experiment is not a true feeding preference experiment because no food choice is provided, but the results can re¯ect di€erences in attractiveness or palatability of various potential foods that may also be expressed when choices are o€ered.
In this work, ``discrimination in selection of algae was tested in two invertebrate species common on intertidal rocks in Gran Canaria (Littorina striata and Osilinus atratus) by measuring their feeding rates on 20 common algal species in no-choice laboratory experiments.
The algae represented the major ¯oral elements of the local intertidal community.
L.
striata and O.
atratus exhibited high feeding Communicated by S.
A.
Poulet, Rosco€ I.
Granado á P.
Caballero ( and ) Departamento de BiologõÂ a, Facultad...






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