TY - JOUR TI - Acoustic communication in marine shallow waters: testing the acoustic adaptive hypothesis in sand gobies AU - Amorim, Maria Clara P. AU - Vasconcelos, Raquel O. AU - Bolgan, Marta AU - Pedroso, Silvia S. AU - Fonseca, Paulo J. T2 - Journal of Experimental Biology AB - Skip to Next Section Acoustic communication is an important part of social behaviour of fish species that live or breed in shallow noisy waters. Previous studies have shown that some fish species exploit a quiet window in the background noise for communication. However, it remains to be examined whether hearing abilities and sound production of fish are adapted to marine habitats presenting high hydrodynamism. Here, we investigated whether the communication system of the painted (Pomatoschistus pictus) and the marbled (Pomatoschistus marmoratus) gobies is adapted to enhance sound transmission and reception in Atlantic shallow water environments. We recorded and measured the sound pressure levels of social vocalisations of both species, as well as snapshots of ambient noise of habitats characterised by different hydrodynamics. Hearing thresholds (in terms of both sound pressure and particle acceleration) and responses to conspecific signals were determined using the auditory evoked potential recording technique. We found that the peak frequency range (100–300 Hz) of acoustic signals matched the best hearing sensitivity in both species and appeared well adapted for short-range communication in Atlantic habitats. Sandy/rocky exposed beaches presented a quiet window, observable even during the breaking of moderate waves, coincident with the main sound frequencies and best hearing sensitivities of both species. Our data demonstrate that the hearing abilities of these gobies are well suited to detect conspecific sounds within typical interacting distances (a few body lengths) in Atlantic shallow waters. These findings lend support to the acoustic adaptive hypothesis, under the sensory drive framework, proposing that signals and perception systems coevolve to be effective within local environment constraints. DA - 2018/11/15/ PY - 2018 DO - 10.1242/jeb.183681 DP - jeb.biologists.org VL - 221 IS - 22 LA - en SN - 0022-0949, 1477-9145 ST - Acoustic communication in marine shallow waters UR - https://jeb.biologists.org/content/221/22/jeb183681 Y2 - 2021/02/10/10:49:30 ER - TY - JOUR TI - Environmental characterization of 4,4′-dichlorobenzophenone in surface waters from Macao and Hong Kong coastal areas (Pearl River Delta) and its toxicity on two biological models: Artemia salina and Daphnia magna AU - Ivorra, Lucia AU - Cardoso, Patricia G. AU - Chan, Shek Kiu AU - Tagulao, Karen AU - Cruzeiro, Catarina T2 - Ecotoxicology and Environmental Safety DA - 2019/04// PY - 2019 DO - 10.1016/j.ecoenv.2018.12.054 DP - DOI.org (Crossref) VL - 171 SP - 1 EP - 11 J2 - Ecotoxicology and Environmental Safety LA - en SN - 01476513 ST - Environmental characterization of 4,4′-dichlorobenzophenone in surface waters from Macao and Hong Kong coastal areas (Pearl River Delta) and its toxicity on two biological models UR - https://linkinghub.elsevier.com/retrieve/pii/S0147651318313472 Y2 - 2022/11/09/10:05:07 ER - TY - JOUR TI - Characterization of the Natural Soundscape of Zebrafish and Comparison with the Captive Noise Conditions AU - Lara, Rafael A. AU - Vasconcelos, Raquel O. T2 - Zebrafish AB - Zebrafish is a well-established model organism in hearing research. Although the acoustic environment is known to shape the structure and sensitivity of auditory systems, there is no information on the natural soundscape of this species. Moreover, zebrafish are typically reared in large-scale housing systems (HS), although their acoustic properties and potential effects on hearing remain unknown. We characterized the soundscape of both zebrafish natural habitats and laboratory captive conditions, and discussed possible impact on auditory sensitivity. Sound recordings were conducted in five distinct zebrafish habitats (Southwest India), from quieter stagnant environments with diverse biological/abiotic sounds to louder watercourses characterized by current and moving substrate sounds. Sound pressure level (SPL) varied between 98 and 126 dB re 1 μPa. Sound spectra presented most energy below 3000 Hz and quieter noise windows were found in the noisiest habitats matching the species best hearing range. Contrastingly, recordings from three zebrafish HS revealed higher SPL (122-143 dB) and most energy below 1000 Hz with more spectral peaks, which might cause significant auditory masking. This study establishes an important ground for future research on the adaptation of zebrafish auditory system to the natural soundscapes, and highlights the importance of controlling noise conditions in captivity. DA - 2019/04// PY - 2019 DO - 10.1089/zeb.2018.1654 DP - PubMed VL - 16 IS - 2 SP - 152 EP - 164 J2 - Zebrafish LA - eng SN - 1557-8542 KW - Animals KW - Animals, Laboratory KW - Auditory Threshold KW - Batrachoidiformes KW - Ecosystem KW - Environment KW - Female KW - Hair Cells, Auditory KW - Hearing KW - Housing, Animal KW - India KW - Male KW - Neuronal Plasticity KW - Noise KW - Saccule and Utricle KW - Seasons KW - Sexual Behavior, Animal KW - Sound KW - Species Specificity KW - Vocalization, Animal KW - Zebrafish KW - ambient noise KW - hearing sensitivity KW - natural habitat KW - sound pressure level KW - soundscape ER - TY - JOUR TI - Uptake and depuration kinetics of dicofol metabolite 4,4′-dichlorobenzophenone, in the edible Asiatic clam Meretrix meretrix AU - Ivorra, Lucia AU - Cruzeiro, Catarina AU - Chan, Shek Kiu AU - Tagulao, Karen Araño AU - Cardoso, Patricia G. T2 - Chemosphere AB - Uptake and depuration kinetics of 4,4′-dichlorobenzophenone (main metabolite of dicofol) in the edible clam Meretrix meretrix were evaluated through a mesocosm experiment. M. meretrix was exposed to different dicofol concentrations (environmental concentration, D1 = 50 ng/L; supra-environmental concentration, D2 = 500 ng/L) for 15 days, followed by the same depuration period. To accomplish this goal, an analytical method was successfully optimized for 4,4′-DCBP using QuEChERS as extraction method with a range of concentrations 0.3–76.8 ng/g ww quantified by gas chromatography coupled to tandem mass spectrometry. Our results demonstrated different kinetics of accumulation depending on the two dicofol treatments. For D1, the uptake kinetic was best fitted using a plateau followed by one phase association kinetic model, while for D2 a one phase association kinetic model suited better. Similar bioconcentration factors were obtained for both concentrations but only animals exposed to D2, showed 4,4′-DCBP levels above the limits of quantification after 24 h exposure. These animals also showed lower uptake rate (ku) than organisms exposed to D1. During the depuration period, only organisms exposed to D1 successfully depurated after 24 h. On the other hand, although animals exposed to D2 presented higher elimination factor, they did not reach the original levels after depuration. Moreover, values detected in these clams were higher than the Maximum Residue Level (10 ng/g) established by the European legislation. This indicates that longer periods of depuration time than the ones used in this study, may be needed in order to reach safe levels for human consumption. This work also demonstrated that studies on metabolite kinetics during uptake/depuration experiments, could be a new alternative to understand the impact and metabolism of pesticides in the marine environment. DA - 2019/11/01/ PY - 2019 DO - 10.1016/j.chemosphere.2019.06.155 DP - ScienceDirect VL - 235 SP - 662 EP - 669 J2 - Chemosphere LA - en SN - 0045-6535 UR - https://www.sciencedirect.com/science/article/pii/S0045653519313967 Y2 - 2022/11/09/10:10:30 KW - Bivalves KW - GC-MS/MS KW - Organochlorine pesticides KW - QuEChERS bioconcentration KW - Seafood ER -