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Oviposition prefere...
Oviposition preferences and larval survival of the marsh fritillary butterfly : The adverse impact of grazing
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- Johansson, Victor (författare)
- Linköpings universitet,Biologi,Tekniska fakulteten,Linköping University, Sweden;Calluna AB, Sweden
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- Sawenfalk, Demieka Seabrook (författare)
- Calluna AB, Linkoping, Sweden
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- Bergman, Karl-Olof (författare)
- Linköpings universitet,Biologi,Tekniska fakulteten,Linköping University, Sweden
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- Kindvall, Oskar (författare)
- Calluna AB, Linkoping, Sweden
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- Askling, John (författare)
- Calluna AB, Linkoping, Sweden
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- Franzén, Markus (författare)
- Linköpings universitet,Linnéuniversitetet,Institutionen för biologi och miljö (BOM),Linköping University, Sweden,Ctr Ecol & Evolut Microbial Model Syst EEMiS,Biologi,Tekniska fakulteten,Linnaeus Univ, Sweden
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(creator_code:org_t)
- John Wiley & Sons, 2024
- 2024
- Engelska.
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Ingår i: Insect Conservation and Diversity. - : John Wiley & Sons. - 1752-458X .- 1752-4598. ; 17:4, s. 642-650
- Relaterad länk:
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https://doi.org/10.1...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Species-rich semi-natural grasslands have been lost during the last century due to agricultural intensification. This has had large negative consequences for many specialised species, including grassland butterflies. To prevent further loss, management regimes in the remaining grasslands must maintain habitat quality over time, and we therefore need to understand the habitat preferences of specialised species and how different management regimes affect their survival. We studied the egg-laying preferences of the threatened marsh fritillary butterfly in relation to host plant properties, microclimate and management (grazing) on Gotland, Sweden. Moreover, we followed the survival of eggs and larvae from 27 egg batches during a period of 8 months (from June 2020 to March 2021) in grazed and ungrazed areas. We found 92 egg batches in total and the average number of eggs was 184.5. Egg-laying probability increased with increasing host plant size and abundance, and environmental variables associated with a warm microclimate (low grass cover, low vegetation height and south-facing edges). The 27 egg batches that were followed over time had on average 203 eggs in June. Roughly 28% of the eggs developed into larvae, and about 17% of these survived over the entire study period, resulting in an overall 4.7% survival. Egg survival was higher in ungrazed habitats compared with grazed; in March (post-hibernation), there were almost nine times more eggs in ungrazed habitats. This study highlights the complex habitat ecology of specialised butterflies and underscores the detrimental impact of intense grazing, advocating for rotational grazing or mowing regimes. We study oviposition preferences and survival of both eggs and larvae (post-hibernation) for the marsh fritillary, in relation to host plant availability, microclimate conditions and grazing management Egg-laying probability increased with increasing host plant size and abundance, and environmental variables associated with a warm microclimate (low grass cover, low vegetation height and south-facing edges) Egg survival was clearly higher in ungrazed habitats compared with grazed; in March (post-hibernation), there were almost nine times more eggs in ungrazed habitats. image
Ämnesord
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
Nyckelord
- calcareous grasslands
- conservation strategies
- egg-laying
- Euphydryas aurinia
- habitat preferences
- host plant selection
- Ecology
- Ekologi
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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