Effect of acclimation temperature on routine metabolic rate in triploid salmonids

Atkins, Michelle; Benfey, Tillmann J.

doi:10.1016/j.cbpa.2007.11.004

Cited by 90 publications

(67 citation statements)

References 21 publications

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“…Atkins and Benfey (2008) reported that triploids of Atlantic salmon had lower thermal optima than diploids, which could explain prior observations of mortality of other triploid salmonids (brown trout, brook trout & rainbow trout) at chronically elevated, but sub-lethal rearing temperatures. Data exist for a variety of species of fish to indicate that triploidy could be responsible for reduced survival of early-life stages and reduced survival and growth of later-life stages, particularly when environmental conditions are not optimal (Piferrer et al, 2009). acclimation to high rates of social interaction.…”

Section: Behaviorsupporting

confidence: 70%

Transgenic Salmon: Science, Politics, and Flawed Policy

Bailey

2015

Society & Natural Resources

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Section: Behaviorsupporting

confidence: 70%

Transgenic Salmon: Science, Politics, and Flawed Policy

Bailey

2015

Society & Natural Resources

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“…Lower metabolic rates of triploid versus diploid brook trout Salvelinus fontinalis [Stillwell and Benfey, 1996], as well as lower or delayed developmental rates of polyploid amphibians or insects [Frankhauser, 1945;Lowcock, 1994], are consistent with this hypothesis. Some studies, however, did not find appreciable differences in developmental or metabolic rates between diand triploid forms; in fact, some even reported higher routine metabolic rates in the latter [Swarup, 1959;Benfey and Sutterlin, 1984;Hyndman et al, 2003;Atkins and Benfey, 2008].…”

Section: Phenotypic Effects Of Polyploidizationmentioning

confidence: 98%

Rise and Persistence of Animal Polyploidy: Evolutionary Constraints and Potential

Choleva

Janko

2013

Cytogenet Genome Res

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The past decade has witnessed a tremendous increase in interest in polyploidy, which may partly be related to the development of new powerful genetic and genomic tools. These have provided numerous insights into mainly genetic and genomic consequences of polyploidy, dramatically improving our understanding of the dynamics of the polyploidization process and its importance as a mechanism in animal evolution. In contrast, several other aspects of polyploidization, such as physiology, ecology and development, have received considerably less attention. Our aim is not to make an exhaustive review of current knowledge about animal polyploidy, but rather to thoroughly elaborate on some very fundamental questions which still remain open or even neglected. In particular, we show that properties of new polyploid lineages largely depend upon the proximate way in which they arose, but the evolutionary pathways to polyploidy are often unresolved. To help researchers orientate amongst the number of pathways to polyploidy, we provide an extensive review of particular scenarios proposed in distinct animal taxa. We discuss how polyploidy relates to hybridization, particularly with respect to asexuality, and elaborate on whether clonal triploids may help to overcome the constraints of aneuploidy, thereby serving as a triploid bridge towards the establishment of new polyploid species. We further show that in most animal asexual complexes clonal lineages may become established only under one ploidy level (usually either di- or triploidy), and that it is rather rare to see the coexistence of successful clones of different ploidies. We discuss why the rate of polyploidization is higher in some taxa than in others, and what tools we have to evaluate the rate of polyploidization. Finally, we review some of the immediate physiological and developmental effects of polyploidy which are related to the genome size/cell size relation and show how studies of polyploidy may enhance the study of macroecology and developmental biology. See also the sister article focusing on plants by Weiss-Schneeweiss et al. in this themed issue.

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“…However, cells from triploid fish are generally larger than those from diploid fish, including muscle cells. Oxygen transport is also affected by larger erythrocytes and higher amount of hemoglobin in triploid fish, which may affect muscle cell metabolism (Atkins and Benfey, 2008). These effects of triploidy on fish biology may lead to consequences in flesh quality, as reported in various salmonid species.…”

Section: Introductionmentioning

confidence: 98%

Selection for muscle fat content and triploidy affect flesh quality in pan-size rainbow trout, Oncorhynchus mykiss

et al. 2015

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a b s t r a c tA lean muscle line (L) and a fat muscle line (F) of rainbow trout were established (Quillet et al., 2005) by a twoway selection for muscle lipid content performed on pan-size rainbow trout using a non-destructive measurement of muscle lipid content (Distell Fish Fat Meter®). The aim of the present study was to evaluate the consequences of this selective breeding on flesh quality of pan size (290 g) diploid and triploid trout after three generations of selection. Instrumental evaluations of fillet color and pH measurement were performed at slaughter. Flesh color, pH, dry matter content and mechanical resistance were measured at 48 h and 96 h postmortem on raw and cooked flesh, respectively. A sensorial profile analysis was performed on cooked fillets. Fillets from the selected fatty muscle line (F) had a higher dry matter content and were more colorful for both raw and cooked fillets. Mechanical evaluation indicated a tendency of raw flesh from F fish to be less firm, but this was not confirmed after cooking, neither instrumentally or by sensory analysis. The sensory analysis revealed higher fat loss, higher intensity of flavor of cooked potato, higher exudation, higher moisture content and a more fatty film left on the tongue for flesh from F fish. Triploid fish had mechanically softer raw and cooked fillets, but the difference was not perceived by the sensorial panel. The sensorial evaluation also revealed a lower global intensity of odor, more exudation and a higher moisture content in the fillets from triploid fish. These differences in quality parameters among groups of fish were associated with larger white muscle fibers in F fish and in triploid fish. The data provide additional information about the relationship between muscle fat content, muscle cellularity and flesh quality.

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Effect of acclimation temperature on routine metabolic rate in triploid salmonids

Cited by 90 publications

References 21 publications

Transgenic Salmon: Science, Politics, and Flawed Policy

Transgenic Salmon: Science, Politics, and Flawed Policy

Rise and Persistence of Animal Polyploidy: Evolutionary Constraints and Potential

Selection for muscle fat content and triploidy affect flesh quality in pan-size rainbow trout, Oncorhynchus mykiss

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