Search Results - "Snorrason, Sigurdur S"

A way forward with eco evo devo: an extended theory of resource polymorphism with postglacial fishes as model systems by Skúlason, Skúli, Parsons, Kevin J., Svanbäck, Richard, Räsänen, Katja, Ferguson, Moira M., Adams, Colin E., Amundsen, Per‐Arne, Bartels, Pia, Bean, Colin W., Boughman, Janette W., Englund, Göran, Guðbrandsson, Jóhannes, Hooker, Oliver E., Hudson, Alan G., Kahilainen, Kimmo K., Knudsen, Rune, Kristjánsson, Bjarni K., Leblanc, Camille A‐L., Jónsson, Zophonías, Öhlund, Gunnar, Smith, Carl, Snorrason, Sigurður S.

“…ABSTRACT A major goal of evolutionary science is to understand how biological diversity is generated and altered. Despite considerable advances, we still have…”
Get full text

Bones in motion: Ontogeny of craniofacial development in sympatric arctic charr morphs by Kapralova, Kalina H., Jónsson, Zophonías O., Palsson, Arnar, Franzdóttir, Sigrídur Rut, le Deuff, Soizic, Kristjánsson, Bjarni Kristófer, Snorrason, Sigurður S.

“…Background: The impressive diversity in the feeding apparatus often seen among related fish species clearly reflects differences in feeding modes and habitat…”
Get full text

Phenotypic plasticity in the morphology of small benthic Icelandic Arctic charr (Salvelinus alpinus) by Kristjánsson, Bjarni K., Leblanc, Camille A.‐L., Skúlason, Skúli, Snorrason, Sigurður S., Noakes, David L.G.

“…Intraspecific phenotypic diversity is the raw material for evolution, so understanding its origin and maintenance is critically important for conservation of…”
Get full text

Differentiation at the MHCIIα and Cath2 loci in sympatric Salvelinus alpinus resource morphs in Lake Thingvallavatn by Kapralova, Kalina H, Gudbrandsson, Johannes, Reynisdottir, Sigrun, Santos, Cristina B, Baltanás, Vanessa C, Maier, Valerie H, Snorrason, Sigurdur S, Palsson, Arnar

“…Northern freshwater fish may be suitable for the genetic dissection of ecological traits because they invaded new habitats after the last ice age (∼10.000…”
Get full text

Fine‐scale parallel patterns in diversity of small benthic Arctic charr (Salvelinus alpinus) in relation to the ecology of lava/groundwater habitats by Kristjánsson, Bjarni K., Skúlason, Skúli, Snorrason, Sigurður S., Noakes, David L.G.

“…It is critical to study factors that are important for origin and maintenance of biological diversity. A comparative approach involving a large number of…”
Get full text

Variability in the functional role of Arctic charr Salvelinus alpinus as it relates to lake ecosystem characteristics by Woods, Pamela J., Skúlason, Skúli, Snorrason, Sigurður S., Kristjánsson, Bjarni K., Ingimarsson, Finnur, Malmquist, Hilmar J.

“…This study investigated how dietary habits vary with lake characteristics in a fish species that exhibits extensive morphological and ecological variability,…”
Get full text

The developmental transcriptome of contrasting Arctic charr ( Salvelinus alpinus) morphs [version 3; peer review: 2 approved, 1 approved with reservations] by Gudbrandsson, Johannes, Ahi, Ehsan P, Franzdottir, Sigridur R, Kapralova, Kalina H, Kristjansson, Bjarni K, Steinhaeuser, S. Sophie, Maier, Valerie H, Johannesson, Isak M, Snorrason, Sigurdur S, Jonsson, Zophonias O, Palsson, Arnar

“…Species and populations with parallel evolution of specific traits can help illuminate how predictable adaptations and divergence are at the molecular and…”
Get full text

Positive assortative mating between recently described sympatric morphs of Icelandic sticklebacks by Ólafsdóttir, Gudbjörg Á, Ritchie, Michael G, Snorrason, Sigurdur S

“…L.) size-assortative mating seems to be instrumental in reproductive isolation. Here, we examine courtship behaviour and assortative mating of newly described…”
Get full text

The developmental transcriptome of contrasting Arctic charr (Salvelinus alpinus) morphs by Gudbrandsson, Johannes, Ahi, Ehsan P., Franzdottir, Sigridur R., Kapralova, Kalina H., Kristjansson, Bjarni K., Steinhaeuser, S. Sophie, Maier, Valerie H., Johannesson, Isak M., Snorrason, Sigurdur S., Jonsson, Zophonias O., Palsson, Arnar

“…Species and populations with parallel evolution of specific traits can help illuminate how predictable adaptations and divergence are at the molecular and…”
Get full text

Risk of predation as a promoting factor of species divergence in threespine sticklebacks (Gasterosteus aculeatus L.) by DOUCETTE, LISA I., SKÚLASON, SKÚLI, SNORRASON, SIGURÐUR S.

“…Icelandic freshwater systems are geologically young and contain only six species of freshwater fish. As these species colonized Icelandic fresh waters they…”
Get full text

Extensive genetic differentiation between recently evolved sympatric Arctic charr morphs by Guðbrandsson, Jóhannes, Kapralova, Kalina H., Franzdóttir, Sigríður R., Bergsveinsdóttir, Þóra Margrét, Hafstað, Völundur, Jónsson, Zophonías O., Snorrason, Sigurður S., Pálsson, Arnar

“…The availability of diverse ecological niches can promote adaptation of trophic specializations and related traits, as has been repeatedly observed in…”
Get full text

Multivariate analysis of morphology, behaviour, growth and developmental timing in hybrids brings new insights into the divergence of sympatric Arctic charr morphs by Horta-Lacueva, Quentin J.-B, Snorrason, Sigurður S, Morrissey, Michael B, Leblanc, Camille A.-L, Kapralova, Kalina H

“…Abstract Background Studying the development of fitness related traits in hybrids from populations diverging in sympatry is a fundamental approach to…”
Get full text

Genetic structure and relatedness of brown trout ( Salmo trutta ) populations in the drainage basin of the Ölfusá river, South-Western Iceland by Lagunas, Marcos, Pálsson, Arnar, Jónsson, Benóný, Jóhannsson, Magnús, Jónsson, Zophonías O., Snorrason, Sigurður S.

“…Background Lake Þingvallavatn in Iceland, a part of the river Ölfusá drainage basin, was presumably populated by brown trout soon after it formed at the end of…”
Get full text

Smolt Emigration and Survival to Adulthood in Two Icelandic Stocks of Atlantic Salmon by Antonsson, Thorolfur, Heidarsson, Thorkell, Snorrason, Sigurdur S.

“…Atlantic salmon Salmo salar smolts were sampled at weirs from two Icelandic rivers (Ellidaár and Vesturdalsá) for a 15‐year period to test four hypotheses: (1)…”
Get full text

Validation of reference genes for expression studies during craniofacial development in arctic charr by Ahi, Ehsan Pashay, Guðbrandsson, Jóhannes, Kapralova, Kalina H, Franzdóttir, Sigríður R, Snorrason, Sigurður S, Maier, Valerie H, Jónsson, Zophonías O

“…Arctic charr (Salvelinus alpinus) is a highly polymorphic species and in Lake Thingvallavatn, Iceland, four phenotypic morphs have evolved. These differences…”
Get full text

Relationships between lake ecology and morphological characters in Icelandic Arctic charr, Salvelinus alpinus by KRISTJÁNSSON, BJARNI K, MALMQUIST, HILMAR J, INGIMARSSON, FINNUR, ANTONSSON, THÓRÓLFUR, SNORRASON, SIGURÐUR S, SKÚLASON, SKÚLI

“…The common occurrence of parallel phenotypic patterns suggests that a strong relationship exists between ecological dynamics and micro-evolution. Comparative…”
Get full text

Patterns of miRNA expression in Arctic charr development by Kapralova, Kalina H, Franzdóttir, Sigrídur Rut, Jónsson, Hákon, Snorrason, Sigurður S, Jónsson, Zophonías O

“…Micro-RNAs (miRNAs) are now recognized as a major class of developmental regulators. Sequences of many miRNAs are highly conserved, yet they often exhibit…”
Get full text

Transcriptional dynamics of a conserved gene expression network associated with craniofacial divergence in Arctic charr by Ahi, Ehsan Pashay, Kapralova, Kalina Hristova, Pálsson, Arnar, Maier, Valerie Helene, Gudbrandsson, Jóhannes, Snorrason, Sigurdur S, Jónsson, Zophonías O, Franzdóttir, Sigrídur Rut

“…Understanding the molecular basis of craniofacial variation can provide insights into key developmental mechanisms of adaptive changes and their role in…”
Get full text

Differential expression of the aryl hydrocarbon receptor pathway associates with craniofacial polymorphism in sympatric Arctic charr by Ahi, Ehsan Pashay, Steinhäuser, Sophie S, Pálsson, Arnar, Franzdóttir, Sigrídur Rut, Snorrason, Sigurdur S, Maier, Valerie H, Jónsson, Zophonías O

“…The developmental basis of craniofacial morphology hinges on interactions of numerous signalling systems. Extensive craniofacial variation in the polymorphic…”
Get full text

Parallels, nonparallels, and plasticity in population differentiation of threespine stickleback within a lake by ÓLAFSDÓTTIR, GUÐBJÖRG Á, SNORRASON, SIGURÐUR S

“…The frequent occurrence of parallel phenotypic divergence in similar habitats is often evoked when emphasizing the role of ecology in adaptive radiation and…”
Get full text