INVESTIGADORES
IRIBARNE Oscar Osvaldo
artículos
Título:
Avoidance of feeding opportunities in the presence of damaged conspecifics in Buccinanops globulosus
Autor/es:
DALEO, P; ALBERTI, J; M.S. AVACA; NARVARTE, M; MARTINETTO P; O. IRIBARNE,
Revista:
MARINE BIOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2012 vol. 159 p. 2359 - 2365
ISSN:
0025-3162
Resumen:
Feeding decisions under predation risk can be a
key in the life of scavenger organisms, and tuned recognition
of predation alarm cues and flexibility in the
response are fundamental. The effect of injured conspecifics
on the response behavior of the whelk Buccinanops
globulosum to feeding opportunities was experimentally
evaluated in a Patagonian Bay (40450S, 64560W,
Argentina) in September 2010. The effect of sex, size, body
condition, or starvation on anti-predatory behavior was
assessed. The number of B. globulosum feeding on carrion
was reduced by half when damaged conspecifics were
present. Smaller, lighter, and starved individuals responded
less to the presence of damaged conspecifics. These results
indicate that, under natural conditions, feeding avoidance
after detecting damaged conspecifics is a common and
important anti-predatory strategy of B. globulosum and
show that morphology and starvation are significant factors
in the context of the trade-off between feeding and
avoiding predation risk.