Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae)
Differences in the sex-ratio and morphometric parameters in cold-adapted ground beetles were analysed to investigate environmental heterogeneity at small scale in a periglacial contest of the European Alps. Four hundred and thirty specimens of two cold-adapted ground beetles - Nebria germarii (Heer,...
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La Sapienza Università degli studi di Roma
2023
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Online Access: | https://hdl.handle.net/2434/1043031 https://doi.org/10.13133/2284-4880/1442 |
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ftunivmilanoair:oai:air.unimi.it:2434/1043031 2024-06-23T07:53:38+00:00 Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) Simone Ornaghi Barbara Valle Marco Caccianiga Roberto Seppi Mauro Gobbi S. Ornaghi B. Valle M. Caccianiga R. Seppi M. Gobbi 2023 https://hdl.handle.net/2434/1043031 https://doi.org/10.13133/2284-4880/1442 eng eng La Sapienza Università degli studi di Roma info:eu-repo/semantics/altIdentifier/wos/WOS:001026297000005 volume:55 issue:1 firstpage:45 lastpage:56 numberofpages:12 journal:FRAGMENTA ENTOMOLOGICA https://hdl.handle.net/2434/1043031 doi:10.13133/2284-4880/1442 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85168131291 info:eu-repo/semantics/openAccess ice morphometric parameter Nebria germarii Nebria castanea permafrost rock glacier plasticity Settore BIO/07 - Ecologia info:eu-repo/semantics/article 2023 ftunivmilanoair https://doi.org/10.13133/2284-4880/1442 2024-06-11T14:29:37Z Differences in the sex-ratio and morphometric parameters in cold-adapted ground beetles were analysed to investigate environmental heterogeneity at small scale in a periglacial contest of the European Alps. Four hundred and thirty specimens of two cold-adapted ground beetles - Nebria germarii (Heer, 1837) and Nebria castanea (Bonelli 1810) - were analysed in order to test the presence of variation in sex-ratio, sexual dimorphism and morphometric parameters in relation to the occurrence of ice, and other environmental variables. Specifically, the populations found on an ice-related landform (active rock glacier) were compared with those on ice-free landforms (a fossil rock glacier and a scree slope). Both species experience sex-dependent morphometric plasticity. In addition, sex-ratio is female -bi-ased, supporting female pioneering tendency in all the studied landforms. Two morphometric parameters resulted indirectly affected by the presence/absence of ice in the terrain: the head width decreases, while elytra width increases passing from ice-free to ice-related landform. Both these morphometric differences may be related to the increase of intra/interspecific competition and to the lower trophic availability. This study highlights that even if these high altitude cold-adapted species are able to survive on ice-free landforms, they probably find more favourable conditions on ice-related landforms. Since the two species show different sensitivity to the ice-presence, it is not always possible to detect this preference through abundances variability (e.g for N. castanea), but it necessary to use more detailed morphometric analysis. Head width and elytra width are good candidates as response traits of interstitial ice occurrence in stony terrains. Article in Journal/Newspaper Ice permafrost The University of Milan: Archivio Istituzionale della Ricerca (AIR) Heer ENVELOPE(-62.952,-62.952,-73.320,-73.320) |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
ice morphometric parameter Nebria germarii Nebria castanea permafrost rock glacier plasticity Settore BIO/07 - Ecologia |
spellingShingle |
ice morphometric parameter Nebria germarii Nebria castanea permafrost rock glacier plasticity Settore BIO/07 - Ecologia Simone Ornaghi Barbara Valle Marco Caccianiga Roberto Seppi Mauro Gobbi Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
topic_facet |
ice morphometric parameter Nebria germarii Nebria castanea permafrost rock glacier plasticity Settore BIO/07 - Ecologia |
description |
Differences in the sex-ratio and morphometric parameters in cold-adapted ground beetles were analysed to investigate environmental heterogeneity at small scale in a periglacial contest of the European Alps. Four hundred and thirty specimens of two cold-adapted ground beetles - Nebria germarii (Heer, 1837) and Nebria castanea (Bonelli 1810) - were analysed in order to test the presence of variation in sex-ratio, sexual dimorphism and morphometric parameters in relation to the occurrence of ice, and other environmental variables. Specifically, the populations found on an ice-related landform (active rock glacier) were compared with those on ice-free landforms (a fossil rock glacier and a scree slope). Both species experience sex-dependent morphometric plasticity. In addition, sex-ratio is female -bi-ased, supporting female pioneering tendency in all the studied landforms. Two morphometric parameters resulted indirectly affected by the presence/absence of ice in the terrain: the head width decreases, while elytra width increases passing from ice-free to ice-related landform. Both these morphometric differences may be related to the increase of intra/interspecific competition and to the lower trophic availability. This study highlights that even if these high altitude cold-adapted species are able to survive on ice-free landforms, they probably find more favourable conditions on ice-related landforms. Since the two species show different sensitivity to the ice-presence, it is not always possible to detect this preference through abundances variability (e.g for N. castanea), but it necessary to use more detailed morphometric analysis. Head width and elytra width are good candidates as response traits of interstitial ice occurrence in stony terrains. |
author2 |
S. Ornaghi B. Valle M. Caccianiga R. Seppi M. Gobbi |
format |
Article in Journal/Newspaper |
author |
Simone Ornaghi Barbara Valle Marco Caccianiga Roberto Seppi Mauro Gobbi |
author_facet |
Simone Ornaghi Barbara Valle Marco Caccianiga Roberto Seppi Mauro Gobbi |
author_sort |
Simone Ornaghi |
title |
Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
title_short |
Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
title_full |
Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
title_fullStr |
Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
title_full_unstemmed |
Sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the European Alps (Coleoptera: Carabidae) |
title_sort |
sex-ratio and body size plasticity in two cold-adapted ground beetles co-occurring in a periglacial area of the european alps (coleoptera: carabidae) |
publisher |
La Sapienza Università degli studi di Roma |
publishDate |
2023 |
url |
https://hdl.handle.net/2434/1043031 https://doi.org/10.13133/2284-4880/1442 |
long_lat |
ENVELOPE(-62.952,-62.952,-73.320,-73.320) |
geographic |
Heer |
geographic_facet |
Heer |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:001026297000005 volume:55 issue:1 firstpage:45 lastpage:56 numberofpages:12 journal:FRAGMENTA ENTOMOLOGICA https://hdl.handle.net/2434/1043031 doi:10.13133/2284-4880/1442 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85168131291 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.13133/2284-4880/1442 |
_version_ |
1802645396585971712 |