1990
DOI: 10.1111/j.1095-8649.1990.tb04321.x
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Gastric evacuation of three food types in the black and yellow rockfish Sebastes chrysomelas (Jordan and Gilbert)

Abstract: The evacuation patterns of shrimp, crab and fish from the stomachs of black and yellow rockfish, Sebustes chrysomelas, were examined by feeding meals of known size and measuring the amount remaining after various post-prandial intervals. Linear, square-root, exponential, power exponential, logistic and Gompertz models (the latter two with unrestricted lower asymptotes, or with lower asymptotes restricted to 0% food remaining) were fitted to the wet weight, dry weight and volume of food remaining in the stomach… Show more

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Cited by 31 publications
(31 citation statements)
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“…It is experiments of this sort on which this review concentrates. In one recent case, tagged black and yellow rockfish (Sebastes chrysomelas, Scorpaenidae) in the sea were fed by divers and the stomachs were subsequently sampled enabling an estimate of gastric evacuation to be made in the natural environment (Hopkins and Larson, 1990). No significant differences were found between the field and laboratory estimates of gastric evacuation, adding confidence in the belief that gastric evacuation experiments conducted in the laboratory can produce results that are directly applicable to wild fish.…”
Section: Introductionmentioning
confidence: 93%
See 1 more Smart Citation
“…It is experiments of this sort on which this review concentrates. In one recent case, tagged black and yellow rockfish (Sebastes chrysomelas, Scorpaenidae) in the sea were fed by divers and the stomachs were subsequently sampled enabling an estimate of gastric evacuation to be made in the natural environment (Hopkins and Larson, 1990). No significant differences were found between the field and laboratory estimates of gastric evacuation, adding confidence in the belief that gastric evacuation experiments conducted in the laboratory can produce results that are directly applicable to wild fish.…”
Section: Introductionmentioning
confidence: 93%
“…In black and yellow rockfish (Sebastes chrysomelas, Scorpaemidae) the evacuation (wet weight) of fish was fitted to a power exponential, bordering on an exponential model. Shrimps were evacuated in linear fashion, and the evacuation of crabs was sigmoidal and fitted by a power exponential model (Hopkins and Larson, 1990). The patterns also varied depending on the units used to express gastric evacuation.…”
Section: The Shape Of the Gastric Evacuation Relationshipmentioning
confidence: 99%
“…The water content of both N. diversicolor and pelleted food were determined according to the methods of Hopkins and Larson (1990).…”
Section: Gastric Evacuation Experimentsmentioning
confidence: 99%
“…So the fish were sacrificed at 10, 15, 30, 45 min and 1, 1.5, 2, 3, 4, 5, 6, 7, 8 and 9 h after feeding. Following the methods of Hopkins and Larson (1990) and Paul et al (1990), after the intended time interval had passed, the animals were killed and their individual weight, length and stomach wet weight were recorded. The stomach contents were then dried for 24 h at 65°C, after which they were cooled in a silica gel dessicator, and weighed to the nearest 0.01 g.…”
Section: Gastric Evacuation Experimentsmentioning
confidence: 99%
“…The gastric evacuation of fishes has been well documented (Fänge & Grove, 1979;Smith, 1989), but a definitive pattern has not emerged, largely due to the wide variation in biotic and abiotic factors among experiments. The mathematical models used to describe the gut evacuation of fishes also vary considerably, from simple linear relationships through to complex multifactor models (Jobling, 1981(Jobling, , 1986(Jobling, , 1987Medved, 1985;Persson, 1986;Hopkins & Larson, 1990;dos Santos & Jobling, 1991, 1992Salvanes et al, 1995). Lags may occur at the beginning of the digestion process, which have led to the use of asymmetric models (MacDonald et al, 1982;Medved, 1985;Macpherson et al, 1989;Nelson & Ross, 1995).…”
Section: Introductionmentioning
confidence: 99%