Effect of Temperature and Feeding Rate on the Liver–Somatic Index of the Largemouth Bass, <i>Micropterus salmoides</i>

Heidinger, Roy C.; Crawford, Steven D.

doi:10.1139/f77-099

Cited by 69 publications

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“…A large variability in the liver energy content, and therefore H, for a fairly stable range of muscle energy content was observed. H has been found to be more sensitive to ration than indices of body condition in several species including winter flounder Pseudopleuronectes americanus (Tyler & Dunn 1976), largemouth bass Micropterus salmoides (Heidinger & Crawford 1977), minnows Phoxinus phoxinus (Cui & Wootton 1988) and Atlantic cod (Foster et al 1993). Consequently, indices based on fish girth are unlikely to respond to alterations in environmental conditions at the same rate as indices based on the relative size of the liver.…”

Section: (Continued)mentioning

confidence: 99%

Spatial and temporal trends in condition of Atlantic cod Gadus morhua on the Icelandic shelf

Pardoe¹,

Thórdarson²,

Marteinsdóttir³

2008

Mar. Ecol. Prog. Ser.

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Interannual (1993Interannual ( to 2006, spatial and bathymetric trends in the hepatosomatic index (H) and relative body condition index (Kr) of Atlantic cod Gadus morhua in Icelandic waters were investigated from data collected during annual spring (March) groundfish surveys. Individual stomach content data were analysed to assess the relationship between condition and consumption of capelin Mallotus villosus. Liver condition was found to vary with region and depth, tending to be highest in deeper water and in the northern and eastern regions; where temperatures were relatively cold and capelin consumption relatively high. A continuous decline in condition of cod in waters off the east coast was observed throughout the study period. Mature cod were found to be in significantly better condition than immature cod of the same age, and mature females were in better condition than mature males. Different patterns emerged from the 2 condition indices; little variation in Kr was observed whereas H was found to be a dynamic index of condition, suggesting that these metrics are not equivalent measures of cod bioenergetic condition.

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Section: (Continued)mentioning

confidence: 99%

Spatial and temporal trends in condition of Atlantic cod Gadus morhua on the Icelandic shelf

Pardoe¹,

Thórdarson²,

Marteinsdóttir³

2008

Mar. Ecol. Prog. Ser.

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“…D'après certains travaux, le rapport hépatosomatique varie également, d'une manière sensible et rapide, avec la qualité et la quantité de nourriture ingérée, ce qui a conduit à penser qu'il peut être un bon indicateur de la consommation alimentaire et du stockage d'énergie chez les poissons, en dehors de la période de dévelop-pement des organes sexuels (Bulow et Coburn, 1976;Heidinger et Crawford, 1977;Miglavs et Jobling, 1989;De Silva et al, 1991 ;Dos Santos et al, 1993). Mais, la valeur de ce rapport est aussi influencée par la température : une augmentation du niveau thermique entraîne un accroissement de la demande d'énergie qui se traduit, entre autre, par une diminution du poids du foie si les apports nutritionnels sont insuffisants (Heidinger et Crawford, 1977;Bulow et al, Chez les deux espèces retenues quelle que soit l'année d'étude, nous avons noté une valeur maximale du rapport hépatosomatique au prin temps mais nous n'avons jamais dé celé une augmentation de cet indice après la fraie; de plus, en été, il di minue progressivement pour atteindre un minimum en septembre; puis, en automne, il s'accroît avec la régéné ration des gonades et plus particuliè rement chez les femelles ( fig.…”

Section: Rapport Hépatosomatiqueunclassified

“…Mais, la valeur de ce rapport est aussi influencée par la température : une augmentation du niveau thermique entraîne un accroissement de la demande d'énergie qui se traduit, entre autre, par une diminution du poids du foie si les apports nutritionnels sont insuffisants (Heidinger et Crawford, 1977;Bulow et al, Chez les deux espèces retenues quelle que soit l'année d'étude, nous avons noté une valeur maximale du rapport hépatosomatique au prin temps mais nous n'avons jamais dé celé une augmentation de cet indice après la fraie; de plus, en été, il di minue progressivement pour atteindre un minimum en septembre; puis, en automne, il s'accroît avec la régéné ration des gonades et plus particuliè rement chez les femelles ( fig. 3) Contrairement à ce que nous avons observé pour le facteur de condition l'évolution du rapport hépatosomati que chez ces poissons n'apparaît pas ainsi différente suivant les années.…”

Section: Rapport Hépatosomatiqueunclassified

Recherches sur l'état physiologique des poissons de la retenue de Pareloup : données relatives à cinq années d'étude

et al. 1994

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Résumé. -L'état physiologique des poissons a été estimé, pour une part, par l'évaluation mensuelle, au cours de quatre années (1984, 1989, 1990, 1991), de caractéristiques morphophysiologiques et de la composition somatique chez deux espèces différant par leur régime alimentaire : la perche et le gardon. Les valeurs obtenues ont démontré qu'il y a certaines années (1984, 1989), en été, un ralentissement de la croissance pondérale, une diminution ou un arrêt de l'accrétion protéique accompagné d'une modification de la concentration d'acides aminés ainsi qu'une chute de la teneur en lipides somatiques. Ces résultats indiquent nettement l'existence, dans la retenue de Pareloup, de conditions nutritionnelles plus ou moins favorables aux populations pisciaires, durant la période estivale. Par ailleurs, la détermination de paramètres sanguins, au cours d'un cycle annuel (1992)(1993), chez plusieurs espèces de poissons (brème, chevesne, brochet, sandre, perche) a révélé que si la valeur de l'hématocrite, la cholestérolémie, la triglycéridémie et la protéinémie sont, d'une manière générale, relativement stables, la glycémie varierait avec la photopériode et le taux d'insuline circulante serait en relation avec le cycle sexuel, pour la plupart des espèces.Mots-clés. -Poissons, retenue, composition somatique, paramètres sanguins.Abstract. -The physiological state of fish was first assessed by monthly evaluation in four years (1 984, 1989, 1990, 1991) of certain morphophysiological characteristics and of somatic composition in two species (perch and roach) with different dietary habits. In 1984 and 1989, a slowing down in weight gain, a decrease or an interruption in protein accretion associated with changes in amino acid contents, and a fall in somatic lipid levels were observed in summer. These results clearly point to dietary conditions 258 F. Vellas et al.in Pareloup Reservoir which are more or less favorable to fish populations during this period. In addition, blood parameter rneasurernents, carried out frorn 1992 to 1993 in various fish species (bream, chub, pike, pike-perch, perch), generally showed relatively unchanged values for hematocrit and plasma cholesterol, triglyceride and protein contents, while plasma glucose levels appeared dependent on the photoperiod and circulating insulin rates on the reproductive cycle, for most species.

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“…lipídeos e glicogênio) em peixes (Bidinoto et al, 1997;Heidinger & Crawford, 1977;Nematipour et al, 1992a, b). Brown et al (1992) testaram níveis de proteína dietética variando de 25 a 55%, com incremento de 5%, na alimentação de juvenis de "sunshine bass" e utilizaram a relação hepato-somática (RHS) como uma medida relativa de estoque energético.…”

Section: Introductionunclassified

Retenção de proteína e energia em juvenis de "black bass" Micropterus salmoides

Cyrino

Portz

Martino

2000

Sci. agric. (Piracicaba, Braz.)

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RESUMO: O objetivo deste trabalho foi avaliar alterações nas formas de reserva de energia na carcaça de juvenis de "black bass" (14,46 ± 0,81 g de peso vivo). Peixes condicionados a aceitar alimento artificial foram estocados em 90 gaiolas de volume 60 L alojadas em caixas de 1.000 L em laboratório com condições ambientais controladas, e alimentados por 64 dias com rações extrusadas com níveis de proteína variando entre 34 e 54% (incrementos de 4%) e teores de energia digestível variando de 3.600 a 4.100 kcal kg -1 de alimento (incrementos de 125 kcal kg -1 ). Foram analisados as variáveis de ganho de peso, consumo alimentar diário, relação hepato-somática, relação víscero-somática, deposição protéica e energética, glicogênio tecidual hepático e lipídio visceral. Não houve interação (P > 0,05) entre níveis de proteína e energia para os parâmetros avaliados. Os níveis de proteína e energia digestível dietética que garantiram melhor desempenho foram 42% e 3.850 kcal kg -1 , respectivamente. Dietas com teores médios de 42% de proteína bruta, induziram um alto acúmulo de glicogênio hepático (P < 0,0442), assim como aumento da relação hepato-somática (P < 0,0001), mostrando alta eficiência no acúmulo de energia prontamente utilizável bem como melhor capacidade de retenção dos nutrientes, quando os níveis de carboidratos foram inferiores a 30% na ração. O aumento dos níveis de energia das dietas, através da inclusão de óleo nas rações, induziu aumentos significativos no acúmulo total de lipídios na carcaça quando as médias eram agrupadas por níveis de energia, e induziu acúmulo de lipídios nas vísceras para os agrupamentos de médias tanto por teor de proteína (P < 0,0001) como de energia dietética (P < 0,0021). Palavras-chave: Micropterus salmoides, proteína, energia, glicogênio, lipídio PROTEIN AND ENERGY RETENTION BY JUVENILE LARGEMOUTH BASS Micropterus salmoidesABSTRACT: To determine dietary protein and energy retention of juvenile largemouth bass one thousand, three hundred and fifty feed-conditioned fish (average weight 14.46 ± 0.81 g) were stocked in 60-L cages set up in 1,000 L containers, and fed for 64 days with a dry, extruded feed containing varying levels of crude protein -CP (34, 38, 42, 46, 50 and 54%) and energy (3,600 to 4,100 kcal kg -1 feed, with increases of 125 kcal kg -1 ). The trial was set up in a totally randomized 6 x 5 factorial design (n=3). Data on weight gain, daily feed consumption, hepatosomatic index, viscerosomatic index, nutrient protein, energy retention, liver glycogen and visceral fat were evaluated. There were no interaction effects (P > 0.05) between feed energy and protein levels in respect to all evaluated parameters. Best performance was attained with levels of 42% CP and 3,850 kcal kg -1 in the diets, a condition which resulted in higher levels of liver glycogen (P < 0.0442) and higher hepatosomatic indexes (P < 0.0001) usually when diets presented less than 30% starch. Higher levels of dietary lipid induced significant increases in whole body lipids considering dietary energ...

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Effect of Temperature and Feeding Rate on the Liver–Somatic Index of the Largemouth Bass, Micropterus salmoides

Cited by 69 publications

References 0 publications

Spatial and temporal trends in condition of Atlantic cod Gadus morhua on the Icelandic shelf

Spatial and temporal trends in condition of Atlantic cod Gadus morhua on the Icelandic shelf

Recherches sur l'état physiologique des poissons de la retenue de Pareloup : données relatives à cinq années d'étude

Retenção de proteína e energia em juvenis de "black bass" Micropterus salmoides

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