Publication details.


Author(s):M. Bolgan, L. Di Lorio, T. Dailianis, I.A. Catalán, P. Lejeune, M. Picciulin, E. Parmentier
Title:Fish acoustic community structure in Neptune seagrass meadows across the Mediterranean basin
Issue No.:2
Abstract:1. Sound production represents an integral part of social communication in many
teleost fish; however, few studies have investigated the structure, organization
and variability of fish sounds at the community level.
2. Fish acoustic community structure was recorded simultaneously in three sites
located along the Mediterranean basin within the endemic habitat of Posidonia
oceanica seagrass beds. Acoustic diversity and species-specific sound features
were expected to differ between locations. We predicted that, in communities
characterized by higher acoustic richness, fish species would specialize in their
use of acoustic resources (i.e. realized acoustic niche compression), while the
overall allocation of resources within the community signal space would expand.
3. The fish acoustic communities inhabiting Posidonia beds were characterized by
the same main contributors (the /Kwa/, Ophidion rochei and Sciaena umbra sound
types). However, their relative occurrence, abundances and use of acoustic
resources were site-specific. Acoustic diversity differed between geographic
locations. The range of spectral and temporal resources exploited by the fish
acoustic community was wider in sites where acoustic richness was at its highest
score. Ophidion rochei was highly specialized in its use of temporal resources
where acoustic richness was higher, whilst S. umbra appeared less efficient in
specializing the use of spectral and temporal resources.
4. By showing that the same species can exploit different acoustic resources
between locations, this study supports the concept of Acoustic Niche plasticity
(i.e. plasticity of acoustic resources allocation within a species). The results
suggest that the degree of acoustic niche plasticity might be determined by the
species-specific degree of sound-producing system plasticity. In turn, different
degrees of acoustic niche plasticity might determine different species-specific
levels of acoustic adaptability to changing biotic or environmental conditions.

Related staff

  • Ignacio A. Catalán Alemany
  • Related departments

  • Marine Ecology