THE INFLUENCE OF TEMPERATURE ON DIGESTION IN <i>FUNDULUS HETEROCLITUS</i>

Nicholls, John V. V.

doi:10.1139/f32-005

Cited by 10 publications

(4 citation statements)

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“…The complete evacuation period in M. cupanus thus compares fairly closely with values of 16-19 hr reported for other larvivorous fishes such as Gambusia at temperatures of 2~25°C by Hunt (1960). Nicholls (1931) working on the North American topminnow, Fundulus heteroclitus stated that l00~evacuation took place in 12·5-8·5 hr at intermediate temperatures (10-18 0 C); these values are not dissimilar to those obtained for A. lineatus, a close reiative, at intermediate temperatures in the tropics. The relatively high rate of dJgestion (seen in A. lineatus as opposed to M. cupanus) probably reflected the more effective digestion process of the fish (McKone 1971).…”

Section: Pattern Of Gastric Digestionsupporting

confidence: 83%

“…Time for 100% gastric evacuation at different temperatures varies with species, ranging from 158 hr at 1 0 C in Pleuronectes platessa (Edwards 1971) to 7 hr at 9 0 C in Ctenopharyngodon species (Hickling 1966) and~4 hr in Gambusia affinis at 30°C (Sokolov and Chvaliova 1936); the last value is close to that of A. lineatus at 32·5°C, as is the 3 hr value of Fundulus heteroclitus at 30°C (Nicholls 1931).…”

Section: Effect Of Temperature On Depletion Ratesmentioning

confidence: 82%

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Rate of gastric digestion in the larvicidal fishesAplocheilus lineatus (Cuv. & Val.) andMacropodus cupanus (Cuv. & Val.)

Jacob

Nair

1981

Proc Ani Sci

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In the larvicidal fishes Aplocheilus lineatus and Macropodus cupanus investigations on the rate of gastric digestion reveal that interspecific variations are apparent; however, within the species, digestion rate is not significantly altered by fish size provided the amount of food supplied is sufficient to fill the stomach. Gastric depletion is directly related to temperature, increasing temperature elevating the rate of digestion. W 1976 Temperature and rate of gastric evacuation by Rainbow Trout, Salmo gairdneri ; Trans. Windell J T and Norris D 0 1969 Gastric digestion and evacuation in rainbow trout, salmo gairdneri; * Not referred to in the original.

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Section: Pattern Of Gastric Digestionsupporting

confidence: 83%

Section: Effect Of Temperature On Depletion Ratesmentioning

confidence: 82%

Rate of gastric digestion in the larvicidal fishesAplocheilus lineatus (Cuv. & Val.) andMacropodus cupanus (Cuv. & Val.)

Jacob

Nair

1981

Proc Ani Sci

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“…minnows refused to ingest more than that ration within the 2-hr feeding period, and on occasions in which larvae were left in the aquaria for up to 4 hr, larvae were not ingested after the first intensive feeding activity. Digestive rate varies with temperature, about 5.5 hr being required by F. heteroclitus at 23 C for complete digestion of the contents of a full-gut (Nicholls, 1931). Evidently, two peak feeding periods, about 6 hr apart (Fig.…”

Section: Discussionmentioning

confidence: 99%

Food, Feeding Selectivity and Ecological Efficiencies of Fundulus notatus (Cyprinodontidae)

Atmar¹,

Stewart²

1972

American Midland Naturalist

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“…The incubation was started by adding gut fluid to thawed prey tissues (100 to 500 mg wet weightÁreplicate -1 ) in a 1.5 mL centrifuge tube (a ratio of wet weight of prey tissues (g):volume of mummichog gut fluid (mL) = 1:5). The mixture of prey tissues and mummichog gut fluid were incubated at room temperature (~20 8C) on an orbital shaker at 500 rpm for 7 h (the approximate gut retention time of mummichogs at 20 8C; Nicholls 1933).…”

Section: In Vitro Solubilization Of Metals From Preymentioning

confidence: 99%

Influences of prey- and predator-dependent processes on cadmium and methylmercury trophic transfer to mummichogs (Fundulus heteroclitus)

Goto

Wallace

2009

Can. J. Fish. Aquat. Sci.

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Factors affecting CH3Hg and Cd trophic transfer from six invertebrates and a juvenile fish prey to mummichogs (Fundulus heteroclitus) were investigated using prey-dependent and predator-dependent approaches. Prey-specific trophic availability of metals to mummichogs was estimated using a subcellular partitioning approach (i.e., trophically available metals (TAM), as originally proposed by Wallace and Luoma (2003)). The proportions of CH3Hg partitioned to TAM (CH3Hg-TAM%) ranged from 39.7% to 82.7%, while the proportions of Cd partitioned to TAM (Cd-TAM%) ranged from 51.8% to 67.4%. CH3Hg-TAM% and Cd-TAM% were significantly correlated with the proportions of metals released from prey by in vitro solubilization with mummichog gut fluid (i.e., gut solubilizable metals (GSM)), CH3Hg-GSM% and Cd-GSM%, respectively. This relationship suggests that the majority of CH3Hg and Cd partitioned as TAM in prey were solubilized in the digestive tract of mummichogs. Mummichogs retained 52.7% to 73.7% of the ingested CH3Hg, which was comparable with prey-specific CH3Hg-TAM% and CH3Hg-GSM%. However, mummichogs retained only 3.2%-11.0% of ingested Cd, which was substantially lower than Cd-TAM% or Cd-GSM%. These results suggest that solubilizable, prey-associated CH 3 Hg was transported through the gut membrane of mummichogs, whereas the majority of preyassociated Cd was excluded and subsequently eliminated, regardless of its subcellular partitioning.Résumé : Nous avons étudié les facteurs qui affectent le transfert trophique de CH 3 Hg et de Cd de six proies invertébrées et d'un jeune poisson proie au choquemort (Fundulus heteroclitus) en utilisant des approches dépendantes des proies et dé-pendantes des prédateurs. Nous avons estimé la disponibilité trophique des métaux aux choquemorts spécifique à chaque proie à l'aide de la méthode de partitionnement subcellulaire (c'est-à-dire les métaux trophiquement disponibles (TAM), méthode proposée au départ par Wallace et Luoma (2003)). Les proportions du CH 3 Hg réparti en TAM (CH 3 Hg-TAM%) varient de 39,7 % à 82,7 %, alors que les portions du Cd partitionné (Cd-TAM%) varient de 51,8 % à 67,4 %. Il y a une corrélation significative entre CH 3 Hg-TAM% et Cd-TAM% et les proportions de métaux libérés des proies par une solubilisation in vitro avec du liquide provenant du tube digestif de choquemorts (c'est-à-dire, les métaux solubilisables dans le tube digestif (GSM)), respectivement CH 3 Hg-GSM% et Cd-GSM%. Cette relation laisse croire que la plus grande partie du CH 3 Hg et du Cd partitionnés en TAM chez les proies est solubilisée dans le tube digestif des choquemorts. Les choquemorts retiennent 52,7 % à 73,7 % du CH 3 Hg ingéré, ce qui se compare aux CH 3 Hg-TAM% et CH 3 Hg-GSM% spécifi-ques aux proies. Cependant, les choquemorts ne retiennent que 3,2 % à 11.0 % du Cd ingéré, ce qui est considérablement plus bas que les valeurs de Cd-TAM% et Cd-GSM%. Ces résultats indiquent que le CH3Hg solubilisable associé aux proies est transporté à travers la membrane du tube digestif des choquemort...

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THE INFLUENCE OF TEMPERATURE ON DIGESTION IN FUNDULUS HETEROCLITUS

Cited by 10 publications

References 0 publications

Rate of gastric digestion in the larvicidal fishesAplocheilus lineatus (Cuv. & Val.) andMacropodus cupanus (Cuv. & Val.)

Rate of gastric digestion in the larvicidal fishesAplocheilus lineatus (Cuv. & Val.) andMacropodus cupanus (Cuv. & Val.)

Food, Feeding Selectivity and Ecological Efficiencies of Fundulus notatus (Cyprinodontidae)

Influences of prey- and predator-dependent processes on cadmium and methylmercury trophic transfer to mummichogs (Fundulus heteroclitus)

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