Phenotypic convergence of artificially reared and wild trout is mediated by shape plasticity

Eleven year-classes of wild, domestic, and wild × domestic hybrid strains of brook trout (Salvelinus fontinalis) were stocked in a 0.19-ha Adirondack pond. Comparative survival and growth were assessed upon drainage in early fall. Rearing native wild strains to maturity in a hatchery, or domestic strains in a natural environment, did not consistently or materially affect survival of progeny, suggesting that superior performance of wild strains was largely inherent. Interstrain hybrids of wild × domestic showed survivals equivalent to the wild parents, but hybrids of two Canadian strains gave evidence of heterosis in both survival and net yield. Supplementary observations in other waters also indicated that one strain (Assinica) may be less adaptable to Adirondack conditions than the other (Temiscamie).Key words: brook trout, wild trout, domesticated trout, interstrain hybrid trout, survival, growth, heterosis, hybrid vigor

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Variable gene transcription underlies phenotypic convergence of hypoxia tolerance in sculpins

BMC Evolutionary Biology ◽

10.1186/s12862-018-1275-1 ◽

2018 ◽

Vol 18 (1) ◽

Cited By ~ 3

Author(s):

Milica Mandic ◽

Marina L. Ramon ◽

Aleeza C. Gerstein ◽

Andrew Y. Gracey ◽

Jeffrey G. Richards

Keyword(s):

Gene Transcription ◽

Hypoxia Tolerance ◽

Variable Gene ◽

Phenotypic Convergence

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Liver Glycogen Reserves of Interacting Resident and Introduced Trout Populations

Journal of the Fisheries Research Board of Canada ◽

10.1139/f61-009 ◽

1961 ◽

Vol 18 (1) ◽

pp. 125-135 ◽

Cited By ~ 7

Author(s):

P. W. Hochachka

Keyword(s):

Population Density ◽

Liver Glycogen ◽

Salmo Gairdneri ◽

Recovery Rates ◽

Introduced Populations ◽

Wild Trout ◽

Low Levels ◽

Glycogen Stores ◽

Salmo Clarki

Three groups of trout, two introduced populations of Salmo gairdneri and a resident Salmo clarki, were studied in stream sections. Liver glycogen deposits, which were reduced to low levels during transportation to the stream, were restored in 2 to 3 weeks in all groups, with recovery rates being approximately inverse to the population density. Within the hatchery groups, larger fish laid down greater glycogen stores. Wild trout maintained their high glycogen reserves throughout the experiment.

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Phenotypic Convergence Mediated by GGDEF-Domain-Containing Proteins

Journal of Bacteriology ◽

10.1128/jb.187.19.6816-6823.2005 ◽

2005 ◽

Vol 187 (19) ◽

pp. 6816-6823 ◽

Cited By ~ 64

Author(s):

Roger Simm ◽

Jacqueline D. Fetherston ◽

Abdul Kader ◽

Ute Römling ◽

Robert D. Perry

Keyword(s):

Biofilm Formation ◽

Inducible Promoter ◽

Extracellular Matrices ◽

Cellulose Synthesis ◽

Cellulose Production ◽

Bacterial Signal Transduction ◽

Serovar Typhimurium ◽

Ggdef Domain ◽

Messenger Molecule ◽

Phenotypic Convergence

ABSTRACT GGDEF domain-containing proteins have been implicated in bacterial signal transduction and synthesis of the second messenger molecule cyclic-di-GMP. A number of GGDEF proteins are involved in controlling the formation of extracellular matrices. AdrA (Salmonella enterica serovar Typhimurium) and HmsT (Yersinia pestis) contain GGDEF domains and are required for extracellular cellulose production and biofilm formation, respectively. Here we show that hmsT is able to restore cellulose synthesis to a Salmonella serovar Typhimurium adrA mutant and that adrA can replace hmsT in Y. pestis Hms-dependent biofilm formation. Like Y. pestis HmsT overproducers, Y. pestis cells carrying adrA under the control of an arabinose-inducible promoter produced substantial biofilms in the presence of arabinose. Finally, we demonstrate that HmsT is involved in the synthesis of cyclic di-GMP.

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Strong evolutionary convergence of receptor-binding protein spike between COVID-19 and SARS-related coronaviruses

10.1101/2020.03.04.975995 ◽

2020 ◽

Cited By ~ 6

Author(s):

Yonghua Wu

Keyword(s):

Receptor Binding ◽

Molecular Basis ◽

Acid Sites ◽

Spike Protein ◽

Receptor Binding Domain ◽

Angiotensin Converting Enzyme 2 ◽

Partner Protein ◽

Evolutionary Convergence ◽

Genome Level ◽

Phenotypic Convergence

AbstractCoronavirus Disease 2019 (COVID-19) and severe acute respiratory syndrome (SARS)-related coronaviruses (e.g., 2019-nCoV and SARS-CoV) are phylogenetically distantly related, but both are capable of infecting human hosts via the same receptor, angiotensin-converting enzyme 2, and cause similar clinical and pathological features, suggesting their phenotypic convergence. Yet, the molecular basis that underlies their phenotypic convergence remains unknown. Here, we used a recently developed molecular phyloecological approach to examine the molecular basis leading to their phenotypic convergence. Our genome-level analyses show that the spike protein, which is responsible for receptor binding, has undergone significant Darwinian selection along the branches related to 2019-nCoV and SARS-CoV. Further examination shows an unusually high proportion of evolutionary convergent amino acid sites in the receptor binding domain (RBD) of the spike protein between COVID-19 and SARS-related CoV clades, leading to the phylogenetic uniting of their RBD protein sequences. In addition to the spike protein, we also find the evolutionary convergence of its partner protein, ORF3a, suggesting their possible co-evolutionary convergence. Our results demonstrate a strong adaptive evolutionary convergence between COVID-19 and SARS-related CoV, possibly facilitating their adaptation to similar or identical receptors. Finally, it should be noted that many observed bat SARS-like CoVs that have an evolutionary convergent RBD sequence with 2019-nCoV and SARS-CoV may be pre-adapted to human host receptor ACE2, and hence would be potential new coronavirus sources to infect humans in the future.

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