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A critical period of susceptibility to sound in the sensory cells of cephalopod hatchlings

AuthorsSolé, Marta; Lenoir, Marc; Fortuño Alós, José Manuel ; Van der Schaar, Mike; André, Michel
KeywordsLateral line system
Acoustic impact
Anthropogenic noise
Electron microscopy
Sensory hair cell
Cephalopod hatchlings
Issue DateOct-2018
PublisherCompany of Biologists
CitationBiology Open 7: bio033860 (2018)
AbstractThe cephalopod statocyst and lateral line systems are sensory organs involved in orientation and balance. Lateral lines allow cephalopods to detect particle motion and are used for locating prey or predators in low light conditions. Here, we show the first analysis of damaged sensory epithelia in three species of cephalopod hatchlings (Sepia officinalis, Loligo vulgaris and Illex coindetii) after sound exposure. Our results indicate lesions in the statocyst sensory epithelia, similar to what was found in adult specimens. The novelty is that the severity of the lesions advanced more rapidly in hatchlings than in adult animals; i.e. the degree of lesions seen in hatchlings immediately after noise exposure would develop within 48 h in adults. This feature suggests a critical period of increased sensitivity to acoustic trauma in those species as has been described in developing mammalian cochlea and avian basilar papilla. The hair cells in the lateral lines of S. officinalis followed the same pattern of damage occurrence, while those of L. vulgaris and I. coindetii displayed a decreasing severity of damage after 24 h. These differences could be due to dissimilarities in size and life stages between the three species
Description13 pages, 8 figures, supplementary information https://dx.doi.org/10.1242/bio.033860
Publisher version (URL)https://dx.doi.org/10.1242/bio.033860
Identifiersdoi: 10.1242/bio.033860
e-issn: 2046-6390
Appears in Collections:(ICM) Artículos
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