Onset and development of cannibalistic and schooling behavior in the early life stages of Pacific bluefin tuna Thunnus orientalis

Sabate, Francisco de la Serna; Sakakura, Yoshitaka; Tanaka, Yousuke; Kumon, Kazunori; Nikaido, Hideki; Eba, Takeshi; Nishi, Akefumi; Shiozawa, Satoshi; Hagiwara, Atsushi; Masuma, Shukei

doi:10.1016/j.aquaculture.2010.01.023

Cited by 30 publications

(19 citation statements)

References 35 publications

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“…We therefore suggest that in the course of the ontogeny of T. orientalis, schooling behaviour occurs at around 24 dph. This result is consistent with previous studies on the ontogeny of schooling behaviour in terms of fish size and developmental stage, i.e., immediately after the metamorphosis from larva to juvenile (Fukuda et al 2010;Sabate et al 2010). In a similar way to T. orientalis, the cub mackerel Scomber japonicus showed coordinated swimming at 14 dph and schooling was then stronger at 18 dph immediately after metamorphosis (Nakayama et al 2007).…”

Section: Discussionsupporting

confidence: 82%

Ontogenetic changes in behaviour transmission among individuals in the schooling of Pacific bluefin tunaThunnus orientalis

Fukuda

Sawada

Takagi

2011

Aquat. Living Resour.

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-To reveal the kinematical aspects of schooling development in the Pacific bluefin tuna Thunnus orientalis, changes in its schooling behaviour traits, local behaviour transmission among school members and morphological traits were investigated as fish developed from the larval to the juvenile stage. Schooling was first observed at around 24 days post-hatching (27 mm body length) in T. orientalis. Behaviour transmission among individuals took much longer among 24 d post-hatching individuals than among older fish. The compactness and polarity of the school progressively improved as the time required for behaviour transmission decreased. One cause of the reduction in the time required for behaviour transmission was the development of manoeuvrability, which resulted from further morphological development of the caudal fin and other organs related to swimming.

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Section: Discussionsupporting

confidence: 82%

Ontogenetic changes in behaviour transmission among individuals in the schooling of Pacific bluefin tunaThunnus orientalis

Fukuda

Sawada

Takagi

2011

Aquat. Living Resour.

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“…In larvae of pelagic fishes, schooling begins after fin formation is complete, and may not commence until well into the juvenile stage: pelagic species began to school at sizes ranging from 10 to 40 mm (Masuda 2009;Sabate et al 2010). Carangids school from 12 to 16 mm, and although their fins are fully formed, this size did not correspond to any change in sensory organs (Masuda 2009).…”

Section: Schoolingmentioning

confidence: 97%

Ontogeny of behaviour in larvae of marine demersal fishes

J.M

2010

Ichthyol Res

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The development of behaviours that are relevant to larval dispersal of marine, demersal fishes is poorly understood. This review focuses on recent work that attempts to quantify the development of swimming, orientation, vertical distribution and sensory abilities. These behaviours are developed enough to influence dispersal outcomes during most of the pelagic larval stage. Larvae swim in the ocean at speeds similar to the currents found in many locations and at 3-15 body lengths per second (BL s -1 ), although, based on laboratory measurements, species from cold environments swim slower than those from warm environments. At least in warm-water species, larvae swim in an inertial hydrodynamic environment for most of their pelagic period. Unfed swimming endurance is [10 km from about 8-10 mm, and reaches more than 50 km before settlement in several species. Larval fishes are efficient swimmers. In most species, a large majority of larvae have orientated swimming in the ocean, but the precision of orientation does not improve with growth. Swimming direction of the larvae frequently changes ontogenetically. Vertical distribution changes ontogenetically in most species, and both ontogenetic ascents and descents are found. Development of schooling is poorly understood, but it may influence speed, orientation and vertical distribution. Sensory abilities (hearing, olfaction, vision) form early, are well developed and are able to detect cues relevant to orientation for most of the pelagic larval stage. All this indicates that the passive portion of the pelagic larval duration will be short, at least in most warm-water species, and that behaviour must be taken into account when considering dispersal, and in particular in dispersal models. Although quantitative information on the ontogeny of some behaviours is available for a relatively small number of species, more research in this field is required, especially on species from colder waters.

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“…; Ishibashi et al . ; Sabate, Sakakura, Tanaka, Kumon, Nikaido, Eba, Nishi, Shiozawa, Hagiwara & Masuma ). However, the factors that cause deaths related to cannibalism and aggressive behaviour have not yet been clarified.…”

Section: Introductionmentioning

confidence: 96%

Effects of feeding conditions and size differences on aggressive behaviour and cannibalism in the Pacific bluefin tunaThunnus orientalis(Temminck and Schlegel) larvae

et al. 2012

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We examined the effects of feeding conditions and size differences on the aggressive behaviour and cannibalism in Pacific bluefin tuna (PBT) Thunnus orientalis larvae. In a 24 h experiment, restricted feeding alone was found to remarkably increase the frequency of aggressive behaviour, which was further elevated by differences in fish size. In a 4‐day rearing experiment, while aggressive behaviour was increased by restricted feeding alone, the frequency of cannibalism did not change significantly. Although the frequency of aggressive behaviour did not increase with difference in size factor, small fish in this group gradually tended to die over 4‐day period. In the restricted feeding and size difference group, large fish were observed to bite the small fish, and almost all the small fish died on the day after the start of the experiment. These results suggest that the aggressive behaviour of PBT larvae is chiefly increased by the shortage of live food; however, deaths related to cannibalism mainly occurred in small larvae and rapidly increased with food restriction and differences in fish size.

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Onset and development of cannibalistic and schooling behavior in the early life stages of Pacific bluefin tuna Thunnus orientalis

Cited by 30 publications

References 35 publications

Ontogenetic changes in behaviour transmission among individuals in the schooling of Pacific bluefin tunaThunnus orientalis

Ontogenetic changes in behaviour transmission among individuals in the schooling of Pacific bluefin tunaThunnus orientalis

Ontogeny of behaviour in larvae of marine demersal fishes

Effects of feeding conditions and size differences on aggressive behaviour and cannibalism in the Pacific bluefin tunaThunnus orientalis(Temminck and Schlegel) larvae

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