Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus) DOI Creative Commons
Guðbjörg Ósk Jónsdóttir,

Laura-Marie von Elm,

Finnur Ingimarsson

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Фев. 17, 2023

Abstract The diversity of functional feeding anatomy is particularly impressive in fishes and correlates with various interspecific ecological specializations. Intraspecific polymorphism can manifest divergent morphology ecology, often along a benthic–pelagic axis. Arctic charr ( Salvelinus alpinus ) freshwater salmonid known for morphological variation sympatric Lake Þingvallavatn, Iceland, four morphs coexist that differ preferred prey, behaviour, habitat use, external morphology. We studied six upper lower jaw bones adults these using geometric morphometrics univariate statistics. tested allometric differences bone size shape among morphs, morph effects on shape, divergence the benthic-pelagic also examined degree integration between pairs. found pelagic benthic two (dentary premaxilla). There was clear axis (dentary, articular-angular, premaxilla maxilla), as well dentary. Notably dentary, explained more than size. Comparatively, possess compact taller shorter dentary palate, consistent visible (but less prominent) As emerged last 10,000 years, results indicate rapid evolution specific structures arctic charr. This sets stage studies genetics development parallel craniofacial evolution.

Язык: Английский

Genomic underpinnings of head and body shape in Arctic charr ecomorph pairs DOI Creative Commons
Sam Fenton, Arne Jacobs, Colin W. Bean

и другие.

Molecular Ecology, Год журнала: 2024, Номер 33(7)

Опубликована: Фев. 29, 2024

Abstract Across its Holarctic range, Arctic charr ( Salvelinus alpinus ) populations have diverged into distinct trophic specialists across independent replicate lakes. The major aspect of divergence between ecomorphs is in head shape and body shape, which are ecomorphological traits reflecting niche use. However, whether the genomic underpinnings these parallel divergences consistent replicates was unknown but key for resolving substrate evolution. We investigated basis morphology four benthivore–planktivore ecomorph pairs Scotland. Through genome‐wide association analyses, we found regions associated with (89 SNPs) or (180 separately 50 SNPs were strongly both morphology. For each trait separately, only a small number shared all (3 10 shape). Signs selection on varied pairs, evolutionary demography differing considerably Using comprehensive database salmonid QTLs newly augmented mapped to genome, several head‐ body‐shape‐associated within near from other species, genetic phenotypes species. Overall, our results demonstrate how ecotype can population‐specific deeply replicates, influenced by differences their environments demographic histories.

Язык: Английский

Процитировано

2
Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus) DOI Creative Commons
Guðbjörg Ósk Jónsdóttir,

Laura-Marie von Elm,

Finnur Ingimarsson

и другие.

PLoS ONE, Год журнала: 2024, Номер 19(5), С. e0300359 - e0300359

Опубликована: Май 21, 2024

The diversity of functional feeding anatomy is particularly impressive in fishes and correlates with various interspecific ecological specializations. Intraspecific polymorphism can manifest divergent morphology ecology, often along a benthic–pelagic axis. Arctic charr ( Salvelinus alpinus ) freshwater salmonid known for morphological variation sympatric Lake Þingvallavatn, Iceland, four morphs coexist that differ preferred prey, behaviour, habitat use, external morphology. We studied six upper lower jaw bones adults these using geometric morphometrics univariate statistics. tested allometric differences bone size shape among morphs, morph effects on shape, divergence the benthic-pelagic also examined degree integration between pairs. found pelagic benthic two (dentary premaxilla). There was clear axis (dentary, articular-angular, premaxilla maxilla), as well dentary. Notably dentary, explained more than size. Comparatively, possess compact taller shorter dentary palate, consistent visible (but less prominent) As emerged last 10,000 years, results indicate rapid evolution specific structures arctic charr. This sets stage studies genetics development parallel craniofacial evolution.

Язык: Английский

Процитировано

2
Diversity in the internal functional feeding elements of sympatric morphs of Arctic charr (Salvelinus alpinus) DOI Creative Commons
Guðbjörg Ósk Jónsdóttir,

Laura-Marie von Elm,

Finnur Ingimarsson

и другие.

bioRxiv (Cold Spring Harbor Laboratory), Год журнала: 2023, Номер unknown

Опубликована: Фев. 17, 2023

Abstract The diversity of functional feeding anatomy is particularly impressive in fishes and correlates with various interspecific ecological specializations. Intraspecific polymorphism can manifest divergent morphology ecology, often along a benthic–pelagic axis. Arctic charr ( Salvelinus alpinus ) freshwater salmonid known for morphological variation sympatric Lake Þingvallavatn, Iceland, four morphs coexist that differ preferred prey, behaviour, habitat use, external morphology. We studied six upper lower jaw bones adults these using geometric morphometrics univariate statistics. tested allometric differences bone size shape among morphs, morph effects on shape, divergence the benthic-pelagic also examined degree integration between pairs. found pelagic benthic two (dentary premaxilla). There was clear axis (dentary, articular-angular, premaxilla maxilla), as well dentary. Notably dentary, explained more than size. Comparatively, possess compact taller shorter dentary palate, consistent visible (but less prominent) As emerged last 10,000 years, results indicate rapid evolution specific structures arctic charr. This sets stage studies genetics development parallel craniofacial evolution.

Язык: Английский

Процитировано

3