Schooling behaviour and retinomotor response of juvenile Pacific bluefin tuna<i> Thunnus orientalis </i>under different light intensities

Torisawa, Shinsuke; Takagi, Tsutomu; Fukuda, Hiromu; Ishibashi, Yasunori; Sawada, Yoshifumi; Okada, Tokihiko; Miyashita, Shigeru; Suzuki, Katsuya; Yamane, Takeshi

doi:10.1111/j.1095-8649.2007.01498.x

Cited by 45 publications

(37 citation statements)

References 17 publications

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“…This result differs from other studies that have reported wider fish dispersal at low light intensities (Monk et al 2006;Torisawa et al 2007). Fish in the 25 lux treatment tended to swim lower in the water column occupying the bottom half of the tank.…”

Section: Swimming Behaviourcontrasting

confidence: 99%

“…For instance, antagonistic behaviours vary depending on light intensity in some fish such as white seabream Diplodus sargus (Castro & Caballero 2004) and African catfish Clarias gariepinus (Britz & Pienaar 1992) in captivity. Distribution and swimming behaviour of fish can also be influenced by light intensity (Oppedal et al 2001;Marchesan et al 2005;Johansson et al 2006), as can feeding success (McMahon & Holanov 1995) and schooling behaviour (Torisawa et al 2007). …”

Section: Introductionmentioning

confidence: 99%

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Growth, behaviour and colour changes of juvenile King George whiting (Sillaginodes punctata) mediated by light intensities

Meakin¹,

Qin²

2012

New Zealand Journal of Marine and Freshwater Research

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Light is an important environmental factor regulating physiological processes and ecological activities in fishes. This research aimed to examine the effect of light on the growth, distribution and body colour of juvenile King George whiting (Sillaginodes punctata) when fish were exposed to different light levels under laboratory conditions. In this study, the fish were exposed to three light levels (25, 500, and 1000 lux) in triplicate for two months. Comparisons were made for growth, body colour and behavioural changes between treatments. During the experimental period, there were no statistical differences in specific growth rate, survival, growth efficiency and condition factor between the light levels. Although light did not affect swimming speed or encounter rates, it did influence group flight activity and fish distribution in the tanks. Whiting in low light preferred to spend more time grouped at the bottom of the tank than at medium (500 lux) or high light (1000 lux). Likewise, after having been exposed to low light, whiting exhibited a brighter colour and had fewer body markings and counter-shading than fish in medium and high light intensities. Differences in fish distribution and body colour between medium and high light intensities were not detected. This study offers a new insight into understanding the impact of light on behaviour and body colour of fish, which may contribute to the spatial distribution, predator avoidance and recruitment of fish in inshore coastal waters.

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Section: Swimming Behaviourcontrasting

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Growth, behaviour and colour changes of juvenile King George whiting (Sillaginodes punctata) mediated by light intensities

Meakin¹,

Qin²

2012

New Zealand Journal of Marine and Freshwater Research

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“…In addition, during the logging period, the weather was fine and the age of the moon was 13.5−15.5 days, near full moon. Torisawa et al (2007) reported that juvenile Pacific bluefin tuna formed a school under 0.05 lx light intensity, which is darker than under full moon. Mitsunaga et al (2012) considered that juveniles formed a school as they were tagged in rapid succession.…”

Section: Discussionmentioning

confidence: 99%

Schooling behavior of juvenile yellowfin tunaThunnus albacaresaround a fish aggregating device (FAD) in the Philippines

Mitsunaga

Endo

Babaran

2012

Aquat. Living Resour.

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-A fish aggregating device (FAD) called a payao is conventionally installed to catch pelagic species in the Philippines. The waters around the Philippines are important regions for yellowfin tuna stocks because they include spawning grounds and nurseries. To understand the schooling behavior of juvenile yellowfin tuna Thunnus albacares around a payao, 13 juveniles (20.5−24.0 cm fork length) double tagged with ultrasonic transmitters (V7-2L-R256; Vemco Ltd.) and data loggers (DST-micro; Star-Oddi Ltd.) were released around a payao. A self-recording receiver (VR2-DEL; Vemco Ltd.) was attached on the mooring rope of the payao to follow the horizontal movements and data loggers recorded the vertical movements of tagged juveniles. Nine juveniles were recaptured simultaneously by ring net at the same payao after 4-7 days. One juvenile was recaptured by hand line at another payao 12 km away from the tagging site after 6 days. Recaptured juveniles showed a diurnal schooling pattern suggesting different school shape and foraging strategy between daytime and nighttime. Juveniles showed a diurnal horizontal moving pattern, concentrated near the payao during daytime, while they were distributed around the payao at nighttime. The fluctuations of swimming depth were synchronized among fish. Juveniles also showed a diurnal vertical movement pattern in surface mixed layer. They concentrated in a shallow and narrow range (11.2 ± 8.2 m, mean ± SD) at nighttime, while they were distributed to a deep and wide range (20.0 ± 11.8 m) during daytime. The maximum vertical neighbor distance indicated the vertical thickness of the school and showed a peak around noon. Higher vertical movement speed during daytime indicated vertical foraging in a water column, while at nighttime the juveniles might forage horizontally following the diurnal migration patterns of prey in the surface layer.

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“…External stimuli generally affect schooling tendency and can promote individual versus collective behaviour. For example, schools can temporarily fragment under perceived predation (Sumpter et al 2008) and can become more well defined under intense light conditions or in the presence of leaders (Tegeder & Krause 1995;Torisawa et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Fish in a ring: spatio-temporal pattern formation in one-dimensional animal groups

Abaid

Porfiri

2010

J. R. Soc. Interface.

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In this work, we study the collective behaviour of fish shoals in annular domains. Shoal mates are modelled as self-propelled particles moving on a discrete lattice. Collective decisionmaking is determined by information exchange among neighbours. Neighbourhoods are specified using the perceptual limit and numerosity of fish. Fish self-propulsion and obedience to group decisions are described through random variables. Spatio-temporal schooling patterns are measured using coarse observables adapted from the literature on coupled oscillator networks and features of the time-varying network describing the fish-to-fish information exchange. Experiments on zebrafish schooling in an annular tank are used to validate the model. Effects of group size and obedience parameter on coarse observables and network features are explored to understand the implications of perceptual numerosity and spatial density on fish schooling. The proposed model is also compared with a more traditional metric model, in which the numerosity constraint is released and fish interactions depend only on physical configurations. Comparison shows that the topological regime on which the proposed model is constructed allows for interpreting characteristic behaviours observed in the experimental study that are not captured by the metric model.

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Schooling behaviour and retinomotor response of juvenile Pacific bluefin tuna Thunnus orientalis under different light intensities

Cited by 45 publications

References 17 publications

Growth, behaviour and colour changes of juvenile King George whiting (Sillaginodes punctata) mediated by light intensities

Growth, behaviour and colour changes of juvenile King George whiting (Sillaginodes punctata) mediated by light intensities

Schooling behavior of juvenile yellowfin tunaThunnus albacaresaround a fish aggregating device (FAD) in the Philippines

Fish in a ring: spatio-temporal pattern formation in one-dimensional animal groups

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