Can aquatic pollutants cause specific endocrinological and metabolic responses in salmon (<i>Salmo salar</i>m.<i>sebago</i>) embryos? — A direct calorimetry study

Penttinen, Olli-Pekka; Honkanen, Jani O.; Sorsa, Karoliina; Kukkonen, Jussi V. K.

doi:10.1080/03680770.2005.11902822

Cited by 2 publications

(1 citation statement)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The relationship between pollutant exposure and metabolic rate, including direct and indirect toxic effects and the metabolic costs associated with maintenance/protection is not consistent but can assume all possible directions: Increased metabolism (pentachlorophenol [1], chlorpyrifos [2]), decreased metabolism (nickel [3], trichlorobenzene [1]) or no effect (methylmercury [4], bisphenol A [5]). As reviewed by Handy and Depledge [6], physiological assays, including physiological energetics, are important, especially when they attempt to measure responses within the normal physiological scope of organisms and correlate these findings with pollutant exposure.…”

Section: Introductionmentioning

confidence: 99%

Body residues as dose for sublethal responses in alevins of landlocked salmon (Salmo salar m. sebago): A direct calorimetry study

Penttinen

Kukkonen

2006

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

Questions of organism-specific factors, toxicity endpoints, and their relation to mode-of-action all are related to consistency and applicability of body residue-based approaches. To address this issue, direct calorimetry was used to evaluate metabolic responses of alevins of landlocked salmon (Salmo salar m. sebago) to pentachlorophenol (PCP) exposure ranging from 0 to 1.04 microM for 24 h or 24, 48, and 72 h (0, 0.26, and 0.55 microM, respectively). The body residues were used as a dose metric for sublethal responses. The body size, rapid ontogenetic development, and exposure to a specific pollutant all were heat output-modifying factors. The acute exposure (24-72 h) to PCP led to a heat output-enhancing effect, which directly was related to an internal concentration of PCP in the range of 0.01 to 0.15 micromol/g. Within the treatments, body size per level of metabolic rate and magnitude of physiological response were not correlated, thus the alevins with higher mass-specific metabolic rate were not more sensitive to PCP. Primarily, increasing metabolic rate during posthatch development controls PCP toxicity only by affecting bioaccumulation kinetics, not the toxic potency of the chemical. New information of a relationship between observed natural variation in measured physiological trait of fish and PCP-induced response and its body residue-based level is of ecotoxicological importance.

show abstract

Section: Introductionmentioning

confidence: 99%

Body residues as dose for sublethal responses in alevins of landlocked salmon (Salmo salar m. sebago): A direct calorimetry study

Penttinen

Kukkonen

2006

Enviro Toxic and Chemistry

Self Cite

View full text Add to dashboard Cite

show abstract

Metabolic rate of Arctic charr eggs depends on their parentage

Pakkasmaa

Penttinen

Piironen³

2005

J Comp Physiol B

View full text Add to dashboard Cite

The metabolic rate (specific heat output) of individual eyed-stage eggs of Arctic charr Salvelinus alpinus (Linnaeus, 1758) originating from different families was measured with direct microcalorimetry. Metabolic rates varied between 2.3-7.9 microW ind(-1) and 0.06-0.22 microW mg(-1). Absolute heat output was unrelated to egg size, but size-scaled or specific heat output was negatively correlated with egg size, measured as diameter, dry mass or fresh mass. Metabolic rates varied significantly between families, suggesting that genetic and/or maternal effects affect embryonic metabolism in Arctic charr. Heat output increased almost linearly from 3.4 to 16.7 microW ind(-1) (0.09-0.67 microW mg(-1)) during the embryonic development. Although the metabolic rate varied between the families and egg metabolic rate increased during development, there was an unexpected disconnect between metabolic rate and hatching time.

show abstract

Can aquatic pollutants cause specific endocrinological and metabolic responses in salmon (Salmo salarm.sebago) embryos? — A direct calorimetry study

Cited by 2 publications

References 12 publications

Body residues as dose for sublethal responses in alevins of landlocked salmon (Salmo salar m. sebago): A direct calorimetry study

Body residues as dose for sublethal responses in alevins of landlocked salmon (Salmo salar m. sebago): A direct calorimetry study

Metabolic rate of Arctic charr eggs depends on their parentage

Contact Info

Product

Resources

About