Independent and adaptive evolution of phenotypic novelties driven by coral symbiosis in barnacle larvae
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Independent and adaptive evolution of phenotypic novelties driven by coral symbiosis in barnacle larvae. / Dreyer, Niklas; Tsai, Pei Che; Olesen, Jørgen; Kolbasov, Gregory A.; Høeg, Jens T.; Chan, Benny K. K.
In: Evolution, Vol. 76, No. 1, 2022, p. 139-157.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Independent and adaptive evolution of phenotypic novelties driven by coral symbiosis in barnacle larvae
AU - Dreyer, Niklas
AU - Tsai, Pei Che
AU - Olesen, Jørgen
AU - Kolbasov, Gregory A.
AU - Høeg, Jens T.
AU - Chan, Benny K. K.
N1 - Publisher Copyright: © 2021 The Authors. Evolution © 2021 The Society for the Study of Evolution.
PY - 2022
Y1 - 2022
N2 - The invasion of novel habitats is recognized as a major promotor of adaptive trait evolution in animals. We tested whether similar ecological niches entail independent and adaptive evolution of key phenotypic structures related to larval host invasion in distantly related taxa. We use disparately related clades of coral barnacles as our model system (Acrothoracica: Berndtia and Thoracicalcarea: Pyrgomatidae). We analyze the larval antennular phenotypes and functional morphologies facilitating host invasion. Extensive video recordings show that coral host invasion is carried out exclusively by cypris larvae with spear-shaped antennules. These first exercise a series of complex probing behaviors followed by repeated antennular penetration of the soft host tissues, which subsequently facilitates permanent invasion. Phylogenetic mapping of larval form and function related to niche invasion in 99 species of barnacles (Thecostraca) compellingly shows that the spear phenotype is uniquely associated with corals and penetrative behaviors. These features evolved independently in the two coral barnacle clades and from ancestors with fundamentally different antennular phenotypes. The larval host invasion system in coral barnacles likely evolved adaptively across millions of years for overcoming challenges associated with invading and entering demanding coral hosts.
AB - The invasion of novel habitats is recognized as a major promotor of adaptive trait evolution in animals. We tested whether similar ecological niches entail independent and adaptive evolution of key phenotypic structures related to larval host invasion in distantly related taxa. We use disparately related clades of coral barnacles as our model system (Acrothoracica: Berndtia and Thoracicalcarea: Pyrgomatidae). We analyze the larval antennular phenotypes and functional morphologies facilitating host invasion. Extensive video recordings show that coral host invasion is carried out exclusively by cypris larvae with spear-shaped antennules. These first exercise a series of complex probing behaviors followed by repeated antennular penetration of the soft host tissues, which subsequently facilitates permanent invasion. Phylogenetic mapping of larval form and function related to niche invasion in 99 species of barnacles (Thecostraca) compellingly shows that the spear phenotype is uniquely associated with corals and penetrative behaviors. These features evolved independently in the two coral barnacle clades and from ancestors with fundamentally different antennular phenotypes. The larval host invasion system in coral barnacles likely evolved adaptively across millions of years for overcoming challenges associated with invading and entering demanding coral hosts.
KW - Adaptive host invasion
KW - barnacle phylogeny
KW - coral barnacle
KW - larval phenotypes
U2 - 10.1111/evo.14380
DO - 10.1111/evo.14380
M3 - Journal article
C2 - 34705275
AN - SCOPUS:85121347289
VL - 76
SP - 139
EP - 157
JO - Evolution; international journal of organic evolution
JF - Evolution; international journal of organic evolution
SN - 0014-3820
IS - 1
ER -
ID: 288049468