2009
DOI: 10.1242/jeb.027102
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The behavioural, digestive and metabolic characteristics of fishes with different foraging strategies

Abstract: SUMMARYTo test the hypothesis that digestion has a more notable physiological effect on ambush foragers than on active foragers, we investigated the behavioural, digestive and metabolic characteristics, as well as the postprandial locomotory capacity, of four species of juvenile fish distributed along the Yangtze River, China, with distinct foraging strategies. The ambush foraging southern catfish (Silurus meridionlis) had the fewest movements per minute (MPM), lowest per cent time spent moving (PTM), slowest … Show more

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Cited by 102 publications
(86 citation statements)
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References 31 publications
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“…However, several species such as Siluriformes: Sisoridae maintain their position in riptide currents by attaching onto rocks through morphological specialisation (with the lips reflected and spreading to form a broad flat sucker) (Peng et al, 2004), rather than through better steady swimming performance. In addition, darkbarbel catfish (Pelteobagrus vachelli) deter predators primarily by using their spines rather than by making a speedy escape (Fu et al, 2009). In this study, the shorter response latency of highpredation pale chub may also be a specific adaptive anti-predator strategy, and this method needs further investigation.…”
Section: Research Articlementioning
confidence: 91%
“…However, several species such as Siluriformes: Sisoridae maintain their position in riptide currents by attaching onto rocks through morphological specialisation (with the lips reflected and spreading to form a broad flat sucker) (Peng et al, 2004), rather than through better steady swimming performance. In addition, darkbarbel catfish (Pelteobagrus vachelli) deter predators primarily by using their spines rather than by making a speedy escape (Fu et al, 2009). In this study, the shorter response latency of highpredation pale chub may also be a specific adaptive anti-predator strategy, and this method needs further investigation.…”
Section: Research Articlementioning
confidence: 91%
“…pelagic active predators versus benthic ambush predators) use their available aerobic scope for different purposes (Table1). In less active species, higher M O2,max values may be attained during digestion alone than during aerobic swimming or following exhaustive burst swimming challenges (Fu et al, 2009a). Thus, the maximum oxygen transport capacity in these species may have evolved to accommodate the metabolic requirements during digestion of large meals while remaining relatively inactive, rather than to maintain a high aerobic scope during continuous swimming (Table1).…”
Section: Ecological Relevance Of Aerobic Scope and T Optasmentioning
confidence: 99%
“…Ten fish (TL=17.6±0.4cm, M=97.0±7.7g; means ± s.d.) were subjected to each of three protocols in a random order: a U crit trial (Brett, 1964;Beamish, 1978;Johansen and Jones, 2011), a 15min exhaustive chase trial (see Cutts et al, 2002;Killen et al, 2007;Fu et al, 2009;Norin and Malte, 2011;Shultz et al, 2011) and a 3min exhaustive chase followed by a 1min air exposure trial (Ferguson and Tufts, 1992;Donaldson et al, 2010;Clark et al, 2012). The same fish (N=10) were subjected to each protocol following a repeated-measures design (Reidy et al, 1995) to minimize interindividual variation in metabolic rates.…”
Section: Study Site and Speciesmentioning
confidence: 99%
“…The first consisted of a 15min exhaustive chase trial in which individual fish were placed in a 110cm diameter circular tank and chased continuously with a 20mm diameter PVC tube until exhaustion (i.e. all fish became unresponsive within 12-15min) (see Cutts et al, 2002;Fu et al, 2006;Killen et al, 2007;Fu et al, 2009;Norin and Malte, 2011). The experimenter would only touch the tail of the fish if it slowed down or stopped swimming.…”
Section: Resting Respirometrymentioning
confidence: 99%