Characterization of the vocal behavior of the miniature and transparent fish model, Danionella cerebrum

Author:

Vasconcelos Raquel O.123,Bolgan Marta4,Matos André B.15,Van-Dunem Sheila P.3,Penim Jorge35,Amorim M. Clara P.25

Affiliation:

1. Institute of Science and Environment, University of Saint Joseph 1 , Macao, Special Administrative Region, China

2. Marine and Environmental Sciences Centre/ARNET Aquatic Research Network, Faculdade de Ciências, Universidade de Lisboa 2 , Lisbon, Portugal

3. EPCV - Department of Life Sciences, Lusófona University 3 , Lisbon, Portugal

4. Ocean Science Consulting Limited 4 , Dunbar, United Kingdom

5. Departamento de Biologia Animal, Faculdade de Ciências, Universidade de Lisboa 5 , Lisbon, Portugal

Abstract

Danionella cerebrum has recently been proposed as a promising model to investigate the structure and function of the adult vertebrate brain, including the development of vocal–auditory neural pathways. This genetically tractable and transparent cypriniform is highly vocal, but limited information is available on its acoustic behavior and underlying biological function. Our main goal was to characterize the acoustic repertoire and diel variation in sound production of D. cerebrum, as well as to investigate the relationship between vocal behavior and reproduction. Sound recordings demonstrated high vocal activity, with sounds varying from short sequences of pulses known as “bursts” (comprising up to 15 pulses) to notably longer sounds, termed “long bursts”, which extended up to 349 pulses with over 2.7 s. Vocal activity peaked at midday and it was very low at night with only a few bursts. While the number of pulses was higher during the daytime, the interpulse interval was longer at night. In addition, calling time was positively associated with the number of viable eggs, suggesting that acoustic communication is important for reproduction. These preliminary findings reveal the potential of using D. cerebrum to investigate vocal plasticity and the implications for sexual selection and reproduction in a novel vertebrate model for neuroscience.

Funder

Fundo para o Desenvolvimento das Ciências e da Tecnologia

Publisher

Acoustical Society of America (ASA)

Subject

Acoustics and Ultrasonics,Arts and Humanities (miscellaneous)

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