Developmental Plasticity, Genetic Differentiation, and Hypoxia-induced Trade-offs in an African Cichlid Fish

Chapman, Lauren J.; Albert, James S.; Galis, Frietson

doi:10.2174/1874404400802010075

Cited by 86 publications

(94 citation statements)

References 77 publications

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“…Chapman et al (2008) found significant differences in the streamline and trophic morphology of P. multicolor victoriae that correspond to intraspecific differences in gill size. Such morphological changes may limit the survival success of phenotypes in new habitats.…”

Section: Anoxia 120mentioning

confidence: 82%

Increase in Anoxia in Lake Victoria and Its Effects on the Fishery

Njiru¹,

Nyamweya²,

Gichuki³

et al. 2012

Anoxia

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Section: Anoxia 120mentioning

confidence: 82%

Increase in Anoxia in Lake Victoria and Its Effects on the Fishery

Njiru¹,

Nyamweya²,

Gichuki³

et al. 2012

Anoxia

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“…These can include adjustments in traits that improve oxygen uptake from the water and oxygen transport to tissues, increase anaerobic ATP production, or depress ATP demands in hypoxia (Boutilier, 2001;Bickler and Buck, 2007;Richards et al, 2009;Borowiec et al, 2015). For example, many tolerant species have an increased capacity for O 2 transport in hypoxia compared with intolerant species, the underlying mechanisms of which can include a high functional area for oxygen uptake at the gills and/or a high haemoglobin (Hb)-O 2 affinity (Nilsson, 2007;Chapman et al, 2008;Mandic et al, 2009), and they tend to live a relatively sedentary lifestyle (Chapman and McKenzie, 2009). In contrast to the growing appreciation of the mechanisms fish use to cope with hypoxia, the potential tradeoffs associated with the evolution of hypoxia tolerance are not well understood.…”

Section: Introductionmentioning

confidence: 99%

Physiological tradeoffs may underlie the evolution of hypoxia tolerance and exercise performance in sunfish (Centrarchidae)

Crans

Pranckevicius

Scott

2015

Journal of Experimental Biology

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Tradeoffs between hypoxia tolerance and aerobic exercise performance appear to exist in some fish taxa, even though both of these traits are often associated with a high O 2 transport capacity. We examined the physiological basis for this potential tradeoff in four species of sunfish from the family Centrarchidae. Hypoxia tolerance was greatest in rock bass, intermediate in pumpkinseed and bluegill and lowest in largemouth bass, based on measurements of critical O 2 tension (P crit ) and O 2 tension at loss of equilibrium (P O2 at LOE). Consistent with there being a tradeoff between hypoxia tolerance and aerobic exercise capacity, the least hypoxia-tolerant species had the highest critical swimming speed (U crit ) during normoxia and suffered the greatest decrease in U crit in hypoxia. There was also a positive correlation between U crit in normoxia and P O2 at LOE, which remained significant after accounting for phylogeny using phylogenetically independent contrasts. Several sub-organismal traits appeared to contribute to both hypoxia tolerance and aerobic exercise capacity (reflected by traits that were highest in both rock bass and largemouth bass), such as the gas-exchange surface area of the gills, the pH sensitivity of haemoglobin-O 2 affinity, and the activities of lactate dehydrogenase and the gluconeogenic enzyme phosphoenolpyruvate carboxykinase in the liver. Some other suborganismal traits were uniquely associated with either hypoxia tolerance (low sensitivity of haemoglobin-O 2 affinity to organic phosphates, high pyruvate kinase and lactate dehydrogenase activities in the heart) or aerobic exercise capacity (capillarity and fibre size of the axial swimming muscle). Therefore, the cumulative influence of a variety of respiratory and metabolic traits can result in physiological tradeoffs associated with the evolution of hypoxia tolerance and aerobic exercise performance in fish.

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“…Examples include muscles that respond to use, and gill tissues that respond to hypoxic conditions (for example, Chapman et al, 2008;Crispo and Chapman, 2010). Although these traits have not to our knowledge been studied from this perspective in stickleback, it is likely that some of the shape changes described in Wund (2012) involve muscle plasticity.…”

Section: Morphological Plasticity In the Radiationmentioning

confidence: 99%

“…Thus, behavioral and life history phenotypes of iteroparous animals that are associated with reproduction have the potential to exhibit significant iterative developmental plasticity, a pattern of plasticity that is less likely to apply to morphology than to other aspects of phenotype, although morphological features involving particularly dynamic tissues such as the brain, gills, and muscles may offer exceptions to this generalization (for example, Chapman et al, 2008;Crispo and Chapman, 2008;Tramontin and Brenowitz, 2000;Gonda et al, 2011aGonda et al, , b, 2013. Activational phenoytpes, predominantly behavioral or physiological phenotypes (Snell-Rood, 2013), also can be modified on varying iterative time scales, often over very short time frames.…”

Section: Introductionmentioning

confidence: 99%

Iterative development and the scope for plasticity: contrasts among trait categories in an adaptive radiation

et al. 2015

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Phenotypic plasticity can influence evolutionary change in a lineage, ranging from facilitation of population persistence in a novel environment to directing the patterns of evolutionary change. As the specific nature of plasticity can impact evolutionary consequences, it is essential to consider how plasticity is manifested if we are to understand the contribution of plasticity to phenotypic evolution. Most morphological traits are developmentally plastic, irreversible, and generally considered to be costly, at least when the resultant phenotype is mis-matched to the environment. At the other extreme, behavioral phenotypes are typically activational (modifiable on very short time scales), and not immediately costly as they are produced by constitutive neural networks. Although patterns of morphological and behavioral plasticity are often compared, patterns of plasticity of life history phenotypes are rarely considered. Here we review patterns of plasticity in these trait categories within and among populations, comprising the adaptive radiation of the threespine stickleback fish Gasterosteus aculeatus. We immediately found it necessary to consider the possibility of iterated development, the concept that behavioral and life history trajectories can be repeatedly reset on activational (usually behavior) or developmental (usually life history) time frames, offering fine tuning of the response to environmental context. Morphology in stickleback is primarily reset only in that developmental trajectories can be altered as environments change over the course of development. As anticipated, the boundaries between the trait categories are not clear and are likely to be linked by shared, underlying physiological and genetic systems.

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Developmental Plasticity, Genetic Differentiation, and Hypoxia-induced Trade-offs in an African Cichlid Fish

Cited by 86 publications

References 77 publications

Increase in Anoxia in Lake Victoria and Its Effects on the Fishery

Increase in Anoxia in Lake Victoria and Its Effects on the Fishery

Physiological tradeoffs may underlie the evolution of hypoxia tolerance and exercise performance in sunfish (Centrarchidae)

Iterative development and the scope for plasticity: contrasts among trait categories in an adaptive radiation

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