Warm-Bodied Fish

Carey, Francis G.; Teal, John M.; Kanwisher, John; Lawson, Kenneth D.; Beckett, J. S.

doi:10.1093/icb/11.1.137

Cited by 256 publications

(141 citation statements)

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“…Previous experiments using acoustic temperature transmitters in the stomach, or intraperitoneally implanted archival temperature tags, determined that bluefin tuna display a thermal increment during digestion (known as the heat increment of feeding, HIF or specific dynamic action, SDA) (Carey et al 1984;Gunn et al 2001). This is possible in bluefin tuna because the visceral heat derived from digestion is conserved by discrete visceral heat exchangers rather than being lost via peripheral blood vessels and gills that remain at ambient water temperature (Carey et al 1971;Carey 1973;Stevens & Carey 1981;Stevens & McLeese 1984;Fudge & Stevens 1996). More recent work has shown that this thermal increment appears closely associated with an increase in oxygen consumption rates ( Fitzgibbon et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Moving with the beat: heart rate and visceral temperature of free-swimming and feeding bluefin tuna

et al. 2008

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Owing to the inherent difficulties of studying bluefin tuna, nothing is known of the cardiovascular function of free-swimming fish. Here, we surgically implanted newly designed data loggers into the visceral cavity of juvenile southern bluefin tuna (Thunnus maccoyii ) to measure changes in the heart rate ( f H ) and visceral temperature (T V ) during a two-week feeding regime in sea pens at Port Lincoln, Australia. Fish ranged in body mass from 10 to 21 kg, and water temperature remained at 18-198C. Pre-feeding f H typically ranged from 20 to 50 beats min K1. Each feeding bout (meal sizes 2-7% of tuna body mass) was characterized by increased levels of activity and f H (up to 130 beats min K1 ), and a decrease in T V from approximately 20 to 188C as cold sardines were consumed. The feeding bout was promptly followed by a rapid increase in T V , which signified the beginning of the heat increment of feeding (HIF). The time interval between meal consumption and the completion of HIF ranged from 10 to 24 hours and was strongly correlated with ration size. Although f H generally decreased after its peak during the feeding bout, it remained elevated during the digestive period and returned to routine levels on a similar, but slightly earlier, temporal scale to T V . These data imply a large contribution of f H to the increase in circulatory oxygen transport that is required for digestion. Furthermore, these data oppose the contention that maximum f H is exceptional in bluefin tuna compared with other fishes, and so it is likely that enhanced cardiac stroke volume and blood oxygen carrying capacity are the principal factors allowing superior rates of circulatory oxygen transport in tuna.

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Section: Introductionmentioning

confidence: 99%

Moving with the beat: heart rate and visceral temperature of free-swimming and feeding bluefin tuna

et al. 2008

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“…The way in which animals move through their environment forms a fundamental component of their ecology and, consequently, there have been efforts to understand animal movements over a range of spatial and temporal scales (Carey et al 1971, Block 2005. In a marine context, vertical movements often play an important role for a range of animals (Hays 2003, Block 2005).…”

Section: Introductionmentioning

confidence: 99%

“…For example, Carey et al (1971) described the results of deployments of acoustic transmitters that revealed the vertical movements of large pelagic fish such as bluefin tuna Thunnus sp., broadbill swordfish Xiphias gladius and the great white shark Carcharodon carcharias. Metcalfe et al (1990) and Arnold et al (1994) used acoustic transmitters to describe the vertical movements of plaice Pleuronectes platessa and cod Gadus morhua.…”

Section: Introductionmentioning

confidence: 99%

“…These vertical movements have been related to foraging on prey within the deep scattering layer (Holland et al 1999); this behaviour appears common in other tuna species, such as southern bluefin tuna Thunnus maccoyii (Davis & Stanley 2002). In addition, some vertical movements seem associated with behavioural thermoregulation at the sea surface (Carey et al 1971).…”

Section: Introductionmentioning

confidence: 99%

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Vertical movements of North Sea cod

Hobson

Righton²,

Metcalfe³

et al. 2007

Mar. Ecol. Prog. Ser.

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Various air-breathing marine vertebrates such as seals, turtles and seabirds show distinct patterns of diving behaviour. For fish, the distinction between different vertical behaviours is often less clear-cut, as there are no surface intervals to differentiate between dives. Using data from acoustic tags (n = 23) and archival depth recorders attached to cod Gadus morhua (n = 92) in the southern North Sea, we developed a quantitative method of classifying vertical movements in order to facilitate an objective comparison of the behaviour of different individuals. This method expands the utilisation of data from data storage tags, with the potential for a better understanding of fish behaviour and enhanced individual based behaviour for improved ecosystem modelling. We found that cod were closely associated with the seabed for 90% of the time, although they showed distinct seasonal and spatial patterns in behaviour. For example, cod tagged in the southern North Sea exhibited high rates of vertical movement in spring and autumn that were probably associated with migration, while the vertical movements of resident cod in other areas were much less extensive and were probably related to foraging or spawning behaviours. The full reasons underlying spatial and temporal behavioural plasticity by cod in the North Sea warrant further investigation.

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“…Both groups have a streamlined, fusiform body, a unique positioning of the aerobic (red) musculature, and the ability to maintain core body temperatures above ambient seawater, thereby increasing muscle power output and accelerating metabolically mediated processes (Carey et al, 1971;Altringham and Block, 1997;Bernal et al, 2001a;Graham and Dickson, 2001). Lamnids and tunas are also obligate ram ventilators, meaning they depend on continuous swimming to force water through the gills.…”

Section: Introductionmentioning

confidence: 99%

Oxygen utilization and the branchial pressure gradient during ram ventilation of the shortfin mako,Isurus oxyrinchus: is lamnid shark–tuna convergence constrained by elasmobranch gill morphology?

Wegner

Lai

Bull

et al. 2012

Journal of Experimental Biology

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SUMMARYRam ventilation and gill function in a lamnid shark, the shortfin mako, Isurus oxyrinchus, were studied to assess how gill structure may affect the lamnid-tuna convergence for high-performance swimming. Despite differences in mako and tuna gill morphology, mouth gape and basal swimming speeds, measurements of mako O 2 utilization at the gills (53.4±4.2%) and the pressure gradient driving branchial flow (96.8±26.1Pa at a mean swimming speed of 38.8±5.8cms ) and residence time (0.79±0.14s) of water though the interlamellar channels of the mako gill. However, mako and tuna gills differ in the sites of primary branchial resistance. In the mako, approximately 80% of the total branchial resistance resides in the septal channels, structures inherent to the elasmobranch gill that are not present in tunas. The added resistance at this location is compensated by a correspondingly lower resistance at the gill lamellae accomplished through wider interlamellar channels. Although greater interlamellar spacing minimizes branchial resistance, it also limits lamellar number and results in a lower total gill surface area for the mako relative to tunas. The morphology of the elasmobranch gill thus appears to constrain gill area and, consequently, limit mako aerobic performance to less than that of tunas.

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Warm-Bodied Fish

Cited by 256 publications

References 0 publications

Moving with the beat: heart rate and visceral temperature of free-swimming and feeding bluefin tuna

Moving with the beat: heart rate and visceral temperature of free-swimming and feeding bluefin tuna

Vertical movements of North Sea cod

Oxygen utilization and the branchial pressure gradient during ram ventilation of the shortfin mako,Isurus oxyrinchus: is lamnid shark–tuna convergence constrained by elasmobranch gill morphology?

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