Show simple item record

dc.contributor.authorSolé Carbonell, Marta
dc.contributor.authorLenoir, Marc
dc.contributor.authorDurfort, Mercè
dc.contributor.authorLópez Bejar, Manel
dc.contributor.authorLombarte Carrera, Antonio
dc.contributor.authorVan der Schaar, Mike Connor Roger Malcolm
dc.contributor.authorAndré, Michel
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Llenguatges i Sistemes Informàtics
dc.contributor.otherCentre Tecnològic de Vilanova i la Geltrú
dc.identifier.citationSole, M. [et al.]. Does exposure to noise from human activities compromise sensory information from cephalopod statocysts?. "Deep-sea research. Part II, topical studies in oceanography", 15 Octubre 2013, vol. 95, p. 160-181.
dc.description.abstractMany anthropogenic noise sources are nowadays contributing to the general noise budget of the oceans. The extent to which sound in the sea impacts and affects marine life is a topic of considerable current interest both to the scientific community and to the general public. Cepaholopods potentially represent a group of species whose ecology may be influenced by artificial noise that would have a direct consequence on the functionality and sensitivity of their sensory organs, the statocysts. These are responsible for their equilibrium and movements in the water column. Controlled Exposure Experiments, including the use of a 50–400 Hz sweep (RL=157±5 dB re 1 μPa with peak levels up to SPL=175 dB re 1 μPa) revealed lesions in the statocysts of four cephalopod species of the Mediterranean Sea, when exposed to low frequency sounds: (n=76) of Sepia officinalis, (n=4) Octopus vulgaris, (n=5) Loligo vulgaris and (n=2) Illex condietii. The analysis was performed through scanning (SEM) and transmission (TEM) electron microscopical techniques of the whole inner structure of the cephalopods' statocyst, especially on the macula and crista. All exposed individuals presented the same lesions and the same incremental effects over time, consistent with a massive acoustic trauma observed in other species that have been exposed to much higher intensities of sound: Immediately after exposure, the damage was observed in the macula statica princeps (msp) and in the crista sensory epithelium. Kinocilia on hair cells were either missing or were bent or flaccid. A number of hair cells showed protruding apical poles and ruptured lateral plasma membranes, most probably resulting from the extrusion of cytoplasmic material. Hair cells were also partially ejected from the sensory epithelium, and spherical holes corresponding to missing hair cells were visible in the epithelium. The cytoplasmic content of the damaged hair cells showed obvious changes, including the presence of numerous vacuoles and electron-dense inclusions not seen in the control animals. The lesions described here are new to cephalopod pathology. Given that low-frequency noise levels in the ocean are increasing (e.g. shipping, offshore industry, and naval manoeuvres), that the role of cephalopods in marine ecosystems is only now beginning to be understood, and that reliable bioacoustic data on invertebrates are scarce, the present study and future investigations will bring an important contribution to the sustainable use of the marine environment.
dc.format.extent22 p.
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Electrònica biomèdica
dc.subjectÀrees temàtiques de la UPC::Ciències de la salut::Impacte ambiental
dc.subject.lcshMarine pollution
dc.subject.otherAnthropogenic noise
dc.subject.otherElectron microscopy
dc.titleDoes exposure to noise from human activities compromise sensory information from cephalopod statocysts?
dc.subject.lemacContaminació acústica marina
dc.contributor.groupUniversitat Politècnica de Catalunya. LAB - Laboratori d'Aplicacions Bioacústiques
dc.description.peerreviewedPeer Reviewed
dc.rights.accessRestricted access - publisher's policy
dc.description.versionPostprint (published version)
local.citation.authorSole, M.; Lenoir, M.; Durfort, M.; López-Béjar, M.; Lombarte, A.; van der Schaar, M.; Andre, M.
local.citation.publicationNameDeep-sea research. Part II, topical studies in oceanography

Files in this item


This item appears in the following Collection(s)

Show simple item record

All rights reserved. This work is protected by the corresponding intellectual and industrial property rights. Without prejudice to any existing legal exemptions, reproduction, distribution, public communication or transformation of this work are prohibited without permission of the copyright holder