Results 71 to 80 of about 38,423 (309)

Oxidative stress in the brain is regulated by social status in a highly social cichlid fish

open access: yesFrontiers in Behavioral Neuroscience
Social stress can increase reactive oxygen species and derail antioxidant function in the brain, which may contribute to the onset and progression of mental health disorders.
Peter D. Dijkstra   +7 more
doaj   +1 more source

The Influence of Body Size and Hemoglobin Multiplicity on Critical Oxygen Threshold in Red Drum (Sciaenops ocellatus) [PDF]

open access: yes, 2016
Hypoxia is common in marine environments and fishes use a suite of cardiorespiratory adjustments to defend aerobic metabolism, including reducing standard metabolic rate (SMR), the minimum metabolic rate needed to sustain life at a specified temperature,
Pan, Yihang
core   +1 more source

The comparative genomic landscape of adaptive radiation in crater lake cichlid fishes

open access: yesMolecular Ecology, 2020
Factors ranging from ecological opportunity to genome composition might explain why only some lineages form adaptive radiations. While being rare, particular systems can provide natural experiments within an identical ecological setting where species ...
Peiwen Xiong   +10 more
semanticscholar   +1 more source

Maternal glucocorticoids have persistent effects on offspring social phenotype irrespective of opportunity for social buffering

open access: yesJournal of Animal Ecology, EarlyView.
This study tests whether early‐life maternal association buffers offspring from the effects of prenatal stress in a facultatively social lizard. Despite clear effects of maternal glucocorticoids on growth and social behaviour, social associations did not mitigate these effects, revealing limits to social buffering in this species.
Kirsty J. MacLeod   +4 more
wiley   +1 more source

Cichlids: A Host of Opportunities for Evolutionary Parasitology [PDF]

open access: yesTrends in Parasitology, 2016
Thanks to high species diversity and a broad range of speciation mechanisms, cichlid fishes represent a textbook model in evolutionary biology. They are also of substantial economic value. Despite this importance, cichlid parasites remain understudied, although some are more diverse than their hosts.
Antoine Pariselle   +9 more
openaire   +4 more sources

Interspecific hybridization can generate functional novelty in cichlid fish

open access: yesProceedings of the Royal Society B, 2019
The role of interspecific hybridization in evolution is still being debated. Interspecific hybridization has been suggested to facilitate the evolution of ecological novelty, and hence the invasion of new niches and adaptive radiation when ecological ...
O. Selz, O. Seehausen
semanticscholar   +1 more source

Colour Morphs as Alternative Solutions to the Trade‐Off Predicted by the Immuno‐Competence Handicap Hypothesis

open access: yesIntegrative Zoology, EarlyView.
In this study, we tested whether white and yellow morphs of the common wall lizard (Podarcis muralis) adopt alternative strategies shaped by the immuno‐competence handicap hypotheses (ICHH). We found that testosterone‐induced immune suppression was stronger in white males, while aggression decreased in both morphs.
Roberto Sacchi   +5 more
wiley   +1 more source

Cichlid Evolution: Lessons in Diversification 2012 [PDF]

open access: yesInternational Journal of Evolutionary Biology, 2012
This is the second special issue on cichlid evolution hosted by the International Journal of Evolutionary Biology. Once more, we are overwhelmed by the vivid responses to our call for contributions, and thank the authors for their great work. The thirteen papers in this issue, including two reviews, span geographically from Africa to South America and ...
Koblmuller, Stephan   +4 more
openaire   +4 more sources

Functional trait plasticity diverges between sexes in African cichlids: A contribution toward ecological sexual dimorphism?

open access: yesEcology and Evolution, 2023
Phenotypic plasticity enables development to produce multiple phenotypes in response to environmental conditions. Plasticity driven variation has been suggested to play a key role in adaptive divergence, and plasticity itself can evolve.
Kirsty McWhinnie   +3 more
doaj   +1 more source

Analysis of the meiotic segregation in intergeneric hybrids of tilapias [PDF]

open access: yes, 2012
Tilapia species exhibit a large ecological diversity and an important propensity to interspecific hybridisation. This has been shown in the wild and used in aquaculture.
Baroiller, Jean-Francois   +5 more
core   +4 more sources

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