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Rates of food intake and aggression of oystercatchers Haematopus ostralegus on the most and least preferred mussel Mytilus edulis beds of the Exe Estuary Goss-Custard, J.D.; Clarke, R.T.; Dit Durell, S.E.A. Le V. (1984). Rates of food intake and aggression of oystercatchers Haematopus ostralegus on the most and least preferred mussel Mytilus edulis beds of the Exe Estuary. J. Anim. Ecol. 53(1): 233-245. https://dx.doi.org/10.2307/4354 In: Journal of Animal Ecology. Blackwell Science/British Ecological Society: Oxford. ISSN 0021-8790; e-ISSN 1365-2656

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Beschikbaar in	Auteurs
VLIZ: Non-open access 129001 [ aanvragen ]

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Trefwoorden

ANE, British Isles, England, Devon, Exe Estuary Haematopus ostralegus Linnaeus, 1758 [WoRMS]; Mytilus edulis Linnaeus, 1758 [WoRMS] Exe Estuary [Marine Regions] Marien/Kust

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Auteurs		Top
Goss-Custard, J.D. Clarke, R.T. Dit Durell, S.E.A. Le V.

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Abstract

The least aggressive of the immature birds left the preferred beds first as the adults returned from the breeding grounds from July-October. The immatures that remained had similar aggression scores to adults. Aggressive encounters occurred much more frequently on preferred beds than on least preferred beds. There were highly significant differences in aggressiveness between individuals feeding on the most preferred beds, but not amongst those feeding on the low density bed. Intake rate was significantly correlated with aggressiveness amongst 18 individuals studied on the preferred beds but not amongst 18 individuals studied on the least preferred bed. This difference was probably mainly due to the amount of aggression, and, particularly of robbing, differing between the beds. On the most preferred beds, robbing depressed the intake of the less aggressive birds and enhanced that of the most aggressive ones. This was not the case on the least preferred bed as encounters were so rare.

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