Reactions of fish to sound generated by divers' open-circuit underwater breathing apparatus

Chapman, C. J.; Johnstone, Andrew; Dunn, J. Richard; Creasey, D.J.

doi:10.1007/bf00394372

Cited by 67 publications

(53 citation statements)

References 14 publications

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“…It would have been diffi cult to obtain similar data during several consecutive days with the same scuba diver. Moreover, the static and discrete video system has been outlined as an appropriate tool for the study of fi sh behaviour, due to its low disturbance compared to divers, whose presence can induce changes of fi sh behaviour (Chapman et al 1974, Hannah and Blume 2012, Mallet et al 2014.…”

Section: Discussionmentioning

confidence: 99%

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Witkowski¹,

Vion²,

Bouchoucha³

2016

Acta Ichthyol. Piscat.

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Background. There is need for more information on behavioural rhythms of fi shes in relation to their habitat use in few or not previously monitored areas, such as coralligenous habitats. Some studies have compiled inventories of observable fi sh species in this habitat, but no studies have been performed on the temporal patterning of fi sh behaviour, especially at the scale of the day. The presently reported study aims at providing knowledge on fi nescale fl uctuations of abundances and behaviour of two fi sh species in coralligenous habitats throughout the diurnal period. Materials and methods. Fish fauna was fi lmed hourly, for several days, from dusk to dawn, with autonomous, programmable, and rotating video systems. Diurnal variations in abundances per count, considering size classes and behaviour, were studied for two diurnal fi sh species-the Mediterranean rainbow wrasse, Coris julis (Linnaeus, 1758) (Labridae), and the common two-banded seabream, Diplodus vulgaris (Geoffroy Saint-Hilaire, 1817) (Sparidae) in two study areas of coralligenous habitats on the French Riviera.Results. Signifi cant temporal variability at the scale of the hour was revealed for abundances of C. julis in one of the two study areas, with few individuals in crepuscular periods and highest abundances in the morning and in the afternoon. These differences were mainly due to signifi cant diurnal variations in abundances of small and medium C. julis, which were low in crepuscular periods, whereas large-sized individuals were equally abundant during the day. On the other hand, no discernible diurnal rhythmicity of mean abundances of D. vulgaris was observed, regardless of the study area. Crepuscular periods were associated with sudden changes of abundances and behaviour for both species, with a greater percentage of mobile and solitary individuals, and few feeding individuals compared to the rest of the day. Feeding occurred mainly in the morning for C. julis. In contrast, no dial-time preference for feeding was revealed for D. vulgaris. Conclusions. The study provided preliminary insights into fi ne-scale diurnal variations of abundances of different life stages and of fi sh behaviour. Variability in abundances of life stages and of fi sh behaviours at different times of day should be taken into account for population assessments and spatial comparisons. Moreover, our study confi rmed the use of video-imaging as an effi cient non-destructive tool for the study of fi sh fauna in structurally complex, highly valuable habitats.

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Section: Discussionmentioning

confidence: 99%

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Witkowski¹,

Vion²,

Bouchoucha³

2016

Acta Ichthyol. Piscat.

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“…Yet, the field work days were the same and there was no loss in resolution power, a goal when a rapid assess of demersal elasmobranch populations is the fieldwork objective. Not only may the difference in area surveyed be responsible for the found difference, but also the presence of the UVC SCUBA diver could be affecting fish behaviour (Chapman et al 1974;Chapman and Atkinson 1986;Costello 1992), limiting the real value of presence/absence of this species (e.g. Kulbicki 1998).…”

Section: Discussionmentioning

confidence: 99%

Underwater towed video: a useful tool to rapidly assess elasmobranch populations in large marine protected areas

2007

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Elasmobranch stock assessment studies are usually made through fisheries surveys data. However, in large marine protected areas (MPAs) the use of destructive techniques must be dismissed in order to avoid population impacts. In 2005, while conducting a marine habitat survey in two marine Special Areas of Conservation (Sebadales de Playa de Inglés and Franja Marina de Mogán) in south Gran Canary Island (Canary Islands, Spain) with underwater towed video (UTV) and underwater visual census (UVC) transects, we recognized the opportunity rose to assess elasmobranch populations through UTV. Number of observed species and specimens, overall field work effort and total surveyed area were determined and compared between methods. Mean observations per day per unit of time (MOPUT) and mean observations per day per unit of surveyed area (MOPUA) were also compared through Mann-Whitney rank sum statistical test (α=0.05). Data analysis demonstrated that UTV is a very useful tool to rapidly assess elasmobranch populations in large MPAs in good visibility underwater environments. It can assess larger areas than UVC with the same effort (statistically significant difference found for the MOPUT; p=<0.001), leading to more observed species (5 vs 2) and specimens (46 vs 3) per day of work, with no loss in resolution power (MOPUA values were not significantly different between UTV and UVC; p=0.104).

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“…[Leum & Choat 1980, McCormick 1989), those exploited by commercial or recreational fishers tend to be behaviourally adaptable predatory species which may rapidly alter their response to divers (e.g. Chapman et al 1974, Chapman & Atkinson 1986. This can cause severe bias in between-site compansons based on diver surveys where fishing presSure is significant (Jennings & Polunin 1995, Kulbicki 1998.…”

Section: Introductionmentioning

confidence: 99%

Detection of spatial variability in relative density of fishes:comparison of visual census, angling, and baited underwater video

Willis¹,

Millar²,

Babcock³

2000

Mar. Ecol. Prog. Ser.

306

214

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The abiiity to make accurate estimates of fish relative abundance is the basis of both ecological and environrnental effects studies, and flawed sampiing methods may give misleadmg results even in otherwise weil-designed surveys. This paper compares surveys of snapper Pagrus auratus (Sparidae) and blue cod Parapercis colias (Pinguipedidae) conducted using 3 methods (underwater visual census, experimental angiing, and baited underwater video) inside and outside the Cape Rodney-Okakari Point marine reserve in northeastern New Zealand. A n g h g and baited video consistently detected adult P. auratus at protected and fished sites, providing estimates of 36.7 and 39.2 times greater density of fishable P. auratus within the reserve, respectively. Visual surveys provided the least reliable measure of density of P. auratus, with adults only detected at the reserve centre where fish have been habituated to divers by hand-feeding. Measures of the size structure of P. auratus were consistent between angling and video, but mean size was sigruiicantly smailer using visual census methods. Relative density of P. colias was similar for ali 3 methods, but a n g h g estimated larger mean size, probably due to hook selectivity against smalier fish. The study indicates that methodological standardisation across ali species is not always appropriate for environrnental effects studies, and that different survey methods should be considered according to the biology and behaviour of the species of interest.

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Reactions of fish to sound generated by divers' open-circuit underwater breathing apparatus

Cited by 67 publications

References 14 publications

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Temporal partitioning of diurnal behavioural patterns of Coris julis and Diplodus vulgaris (Actinopterygii: Perciformes) in Mediterranean coralligenous habitats

Underwater towed video: a useful tool to rapidly assess elasmobranch populations in large marine protected areas

Detection of spatial variability in relative density of fishes:comparison of visual census, angling, and baited underwater video

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