@ARTICLE{TreeBASE2Ref20899,
author = {Peter Trontelj},
title = {Ecomorphological convergence of cave communities},
year = {2012},
keywords = {Competition, Ecomorph, Troglomorphic Adaptation, Subterranean Biology, Niphargus},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Extreme selective environments are commonly believed to funnel evolution towards a few predictable outcomes. Caves are well known extreme environments with characteristically adapted faunas that are similar in appearance, physiology and behavior all over the world even if not closely related. Morphological diversity between closely related cave species has been explained by difference in time since colonization and different ecological influence from the surface. Here we tested a more classical hypothesis: morphological diversity is niche-based, and different morphologies reflect properties of microhabitats within caves. We analyzed seven communities with altogether 30 species of the subterranean amphipod (crustacean) genus Niphargus using multivariate morphometrics, multinomial logit models cross-validation, and phylogenetic reconstruction. Species clustered into four distinct ecomorph classes ? small pore, cave stream, cave lake, and lake giants ? each associated with specific cave microhabitats and of multiple independent phylogenetic origins. Traits commonly regarded as adaptation to caves, like antenna length, were shown to be related to microhabitat parameters, like flow velocity. These results demonstrate that under the selection pressure of extreme environment the ecomorphological structure of communities can converge. Thus, morphological diversity does not result from adaptive response to temporal and ecological gradients, but from fine-level niche partitioning.}
}
Citation for Study 12919
Citation title:
"Ecomorphological convergence of cave communities".
Study name:
"Ecomorphological convergence of cave communities".
This study is part of submission 12919
(Status: Published).
Citation
Trontelj P. 2012. Ecomorphological convergence of cave communities. Evolution, .
Authors
Abstract
Extreme selective environments are commonly believed to funnel evolution towards a few predictable outcomes. Caves are well known extreme environments with characteristically adapted faunas that are similar in appearance, physiology and behavior all over the world even if not closely related. Morphological diversity between closely related cave species has been explained by difference in time since colonization and different ecological influence from the surface. Here we tested a more classical hypothesis: morphological diversity is niche-based, and different morphologies reflect properties of microhabitats within caves. We analyzed seven communities with altogether 30 species of the subterranean amphipod (crustacean) genus Niphargus using multivariate morphometrics, multinomial logit models cross-validation, and phylogenetic reconstruction. Species clustered into four distinct ecomorph classes ? small pore, cave stream, cave lake, and lake giants ? each associated with specific cave microhabitats and of multiple independent phylogenetic origins. Traits commonly regarded as adaptation to caves, like antenna length, were shown to be related to microhabitat parameters, like flow velocity. These results demonstrate that under the selection pressure of extreme environment the ecomorphological structure of communities can converge. Thus, morphological diversity does not result from adaptive response to temporal and ecological gradients, but from fine-level niche partitioning.
Keywords
Competition, Ecomorph, Troglomorphic Adaptation, Subterranean Biology, Niphargus
External links
About this resource
- Canonical resource URI:
http://purl.org/phylo/treebase/phylows/study/TB2:S12919
- Other versions:
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- Show BibTeX reference
@ARTICLE{TreeBASE2Ref20899,
author = {Peter Trontelj},
title = {Ecomorphological convergence of cave communities},
year = {2012},
keywords = {Competition, Ecomorph, Troglomorphic Adaptation, Subterranean Biology, Niphargus},
doi = {},
url = {http://},
pmid = {},
journal = {Evolution},
volume = {},
number = {},
pages = {},
abstract = {Extreme selective environments are commonly believed to funnel evolution towards a few predictable outcomes. Caves are well known extreme environments with characteristically adapted faunas that are similar in appearance, physiology and behavior all over the world even if not closely related. Morphological diversity between closely related cave species has been explained by difference in time since colonization and different ecological influence from the surface. Here we tested a more classical hypothesis: morphological diversity is niche-based, and different morphologies reflect properties of microhabitats within caves. We analyzed seven communities with altogether 30 species of the subterranean amphipod (crustacean) genus Niphargus using multivariate morphometrics, multinomial logit models cross-validation, and phylogenetic reconstruction. Species clustered into four distinct ecomorph classes ? small pore, cave stream, cave lake, and lake giants ? each associated with specific cave microhabitats and of multiple independent phylogenetic origins. Traits commonly regarded as adaptation to caves, like antenna length, were shown to be related to microhabitat parameters, like flow velocity. These results demonstrate that under the selection pressure of extreme environment the ecomorphological structure of communities can converge. Thus, morphological diversity does not result from adaptive response to temporal and ecological gradients, but from fine-level niche partitioning.}
}
- Show RIS reference
TY - JOUR
ID - 20899
AU - Trontelj,Peter
T1 - Ecomorphological convergence of cave communities
PY - 2012
KW - Competition
KW - Ecomorph
KW - Troglomorphic Adaptation
KW - Subterranean Biology
KW - Niphargus
UR - http://dx.doi.org/
N2 - Extreme selective environments are commonly believed to funnel evolution towards a few predictable outcomes. Caves are well known extreme environments with characteristically adapted faunas that are similar in appearance, physiology and behavior all over the world even if not closely related. Morphological diversity between closely related cave species has been explained by difference in time since colonization and different ecological influence from the surface. Here we tested a more classical hypothesis: morphological diversity is niche-based, and different morphologies reflect properties of microhabitats within caves. We analyzed seven communities with altogether 30 species of the subterranean amphipod (crustacean) genus Niphargus using multivariate morphometrics, multinomial logit models cross-validation, and phylogenetic reconstruction. Species clustered into four distinct ecomorph classes ? small pore, cave stream, cave lake, and lake giants ? each associated with specific cave microhabitats and of multiple independent phylogenetic origins. Traits commonly regarded as adaptation to caves, like antenna length, were shown to be related to microhabitat parameters, like flow velocity. These results demonstrate that under the selection pressure of extreme environment the ecomorphological structure of communities can converge. Thus, morphological diversity does not result from adaptive response to temporal and ecological gradients, but from fine-level niche partitioning.
L3 -
JF - Evolution
VL -
IS -
ER -