Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand
The mayfly <i>Acanthophlebia cruentata</i> of Aotearoa, New Zealand, is widespread in Te Ika-a-Māui North Island streams, but has never been collected from South Island despite land connection during the last glacial maximum. Population structure of this mayfly might reflect re-colonisat...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-06-01
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| Series: | Insects |
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| Online Access: | https://www.mdpi.com/2075-4450/13/7/567 |
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| author | Steven A. Trewick Ian M. Henderson Stephen R. Pohe Mary Morgan-Richards |
| author_facet | Steven A. Trewick Ian M. Henderson Stephen R. Pohe Mary Morgan-Richards |
| author_sort | Steven A. Trewick |
| collection | DOAJ |
| description | The mayfly <i>Acanthophlebia cruentata</i> of Aotearoa, New Zealand, is widespread in Te Ika-a-Māui North Island streams, but has never been collected from South Island despite land connection during the last glacial maximum. Population structure of this mayfly might reflect re-colonisation after volcanic eruptions in North Island c1800 years ago, climate cycling or conceal older, cryptic diversity. We collected population samples from 33 locations to estimate levels of population genetic diversity and to document phenotypic variation. Relatively low intraspecific haplotype divergence was recorded among mitochondrial cytb sequences from 492 individuals, but these resolved three geographic-haplotype regions (north, west, east). We detected a signature of isolation by distance at low latitudes (north) but evidence of recent population growth in the west and east. We did not detect an effect of volcanic eruptions but infer range expansion into higher latitudes from a common ancestor during the last glacial period. As judged from wing length, both sexes of adult mayflies were larger at higher elevation and we found that haplotype region was also a significant predictor of <i>Acanthophlebia cruentata</i> size. This suggests that our mitochondrial marker is concordant with nuclear genetic differences that might be explained by founder effect during range expansion. |
| first_indexed | 2024-03-09T10:17:25Z |
| format | Article |
| id | doaj.art-8459a3faf3ae4bb89d86da064c46f626 |
| institution | Directory Open Access Journal |
| issn | 2075-4450 |
| language | English |
| last_indexed | 2024-03-09T10:17:25Z |
| publishDate | 2022-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Insects |
| spelling | doaj.art-8459a3faf3ae4bb89d86da064c46f6262023-12-01T22:17:09ZengMDPI AGInsects2075-44502022-06-0113756710.3390/insects13070567Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New ZealandSteven A. Trewick0Ian M. Henderson1Stephen R. Pohe2Mary Morgan-Richards3Wildlife & Ecology Group, School of Natural Science, Massey University, Private Bag 11-222, Palmerston North 4442, New ZealandWildlife & Ecology Group, School of Natural Science, Massey University, Private Bag 11-222, Palmerston North 4442, New ZealandPohe Environmental, Whangarei 0112, New ZealandWildlife & Ecology Group, School of Natural Science, Massey University, Private Bag 11-222, Palmerston North 4442, New ZealandThe mayfly <i>Acanthophlebia cruentata</i> of Aotearoa, New Zealand, is widespread in Te Ika-a-Māui North Island streams, but has never been collected from South Island despite land connection during the last glacial maximum. Population structure of this mayfly might reflect re-colonisation after volcanic eruptions in North Island c1800 years ago, climate cycling or conceal older, cryptic diversity. We collected population samples from 33 locations to estimate levels of population genetic diversity and to document phenotypic variation. Relatively low intraspecific haplotype divergence was recorded among mitochondrial cytb sequences from 492 individuals, but these resolved three geographic-haplotype regions (north, west, east). We detected a signature of isolation by distance at low latitudes (north) but evidence of recent population growth in the west and east. We did not detect an effect of volcanic eruptions but infer range expansion into higher latitudes from a common ancestor during the last glacial period. As judged from wing length, both sexes of adult mayflies were larger at higher elevation and we found that haplotype region was also a significant predictor of <i>Acanthophlebia cruentata</i> size. This suggests that our mitochondrial marker is concordant with nuclear genetic differences that might be explained by founder effect during range expansion.https://www.mdpi.com/2075-4450/13/7/567biogeographygenetic diversityinterspecific variationphylogeographyrange expansion |
| spellingShingle | Steven A. Trewick Ian M. Henderson Stephen R. Pohe Mary Morgan-Richards Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand Insects biogeography genetic diversity interspecific variation phylogeography range expansion |
| title | Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand |
| title_full | Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand |
| title_fullStr | Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand |
| title_full_unstemmed | Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand |
| title_short | Spatial Variation of <i>Acanthophlebia cruentata</i> (Ephemeroptera), a Mayfly Endemic to Te Ika-a-Māui—North Island of Aotearoa, New Zealand |
| title_sort | spatial variation of i acanthophlebia cruentata i ephemeroptera a mayfly endemic to te ika a maui north island of aotearoa new zealand |
| topic | biogeography genetic diversity interspecific variation phylogeography range expansion |
| url | https://www.mdpi.com/2075-4450/13/7/567 |
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