Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/38591
Type: Artigo de periódico
Title: Does the association of young fishes with jellyfishes protect from predation?A report on a failure case due to damage to the jellyfish
Author: Bonaldo, Roberta Martini
Krajewski, João Paulo
Sazima, Ivan
Abstract: The fish-jellyfish association is regarded as a temporary symbiosis believed to protect the fishes from predators. Here we report on juvenile scads (Trachurus lathami) associated with the jellyfish Chrysaora lactea, opportunistically preyed on by the grouper Mycteroperca acutirostris while the medusa was being damaged. The predation instances occurred when a couple of the filefish Stephanolepis hispidus approached the jellyfish to nibble on its umbrella. The feeding of the filefish caused a momentary disturbance of the defensive association, perceived and capitalised on by the watchful grouper, an opportunistic and versatile hunter. Before and after the disturbance, the protection offered to the young fish by the jellyfish showed to be effective, which strengthens the hypothesis of defensive function of this association.
A associação entre peixes e medusas é considerada uma simbiose temporária que protegeria os peixes contra predadores. Relatamos aqui a predação oportunista de juvenis de xixarro Trachurus lathami, associados à medusa Chrysaora lactea, pelo badejo-mira Mycteroperca acutirostris enquanto a medusa estava sendo danificada. Os eventos de predação ocorreram quando um casal do peixe-porco Stephanolepis hispidus se aproximou da medusa para alimentar-se de pequenas porções da sua umbrela. A alimentação dos peixes-porcos causou um distúrbio momentâneo na associação defensiva, percebido e aproveitado pelo atento badejo-mira, um predador versátil e oportunista. Antes e depois do distúrbio, a proteção conferida aos peixes juvenis pela medusa mostrou ser efetiva, fortalecendo a hipótese de função defensiva desta associação.
Subject: protective symbiosis
fish-jellyfish association
predation
defence
SW Atlantic
Editor: Sociedade Brasileira de Ictiologia
Rights: aberto
Identifier DOI: 10.1590/S1679-62252004000200008
Address: http://dx.doi.org/10.1590/S1679-62252004000200008
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000200008
Date Issue: 1-Jun-2004
Appears in Collections:Unicamp - Artigos e Outros Documentos

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