Opposing genetic patterns of range shifting temperate and tropical gastropods in an area undergoing tropicalisation DOI Creative Commons
Karolina Zarzyczny, Michael E. Hellberg, Elena B. Lugli

et al.

Journal of Biogeography, Journal Year: 2023, Volume and Issue: 51(2), P. 246 - 262

Published: Oct. 18, 2023

Abstract Aim The poleward range expansion of tropical species, and contraction temperate species (known as tropicalisation) has mainly been studied from an ecological perspective, with little research on its genetic consequences. Here, we used distributional data to document the consequences tropicalisation in rocky shore gastropods assess more broadly future implications phylogeographic patterns. Location Nineteen sampling sites along >3000 km eastern Pacific intertidal zone, tip Baja California Peninsula southern California. Taxon Temperate gastropods: Lottia conus , L. strigatella Fissurella volcano Tegula gallina. Tropical rubropicta Nerita funiculata N. scabricosta. Methods We determine historical modern distributions by combining records current field surveys. Using a section cytochrome oxidase subunit I gene, utilised comparative phylogeography, analysis molecular variance, F ST pairwise comparison, mismatch haplotype differences neutrality tests detect signatures better understand Results identified contractions two all three species. detected through unimodal strongly negative values for Fu Li D * statistics. found population subdivision breaks although geographic location differed among Main Conclusions Genetic surveys indicate recent expansions supporting coastline. Conversely, suggesting that may cause erosion evolutionary distinct lineages range‐contraction. different locations suggests some barriers are specific.

Language: Английский

Tropicalization shifts herbivore pressure from seagrass to rocky reef communities DOI Creative Commons
Julia Santana‐Garcon, Scott Bennett, Nùria Marbá

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(1990)

Published: Jan. 11, 2023

Climate-driven species redistributions are reshuffling the composition of marine ecosystems. How these changes alter ecosystem functions, however, remains poorly understood. Here we examine how impacts herbivory change across a gradient tropicalization in Mediterranean Sea, which includes steep climatic and marked plant nutritional quality fish herbivore composition. We quantified individual feeding rates behaviour 755 fishes native Sarpa salpa , non-native Siganus rivulatus luridus . measured benthic assemblage 20 sites along gradient, spanning 30° longitude 8° latitude. coupled patterns with temperature measurements nutrient concentrations to assess under tropicalization. found transition ecological by from predominance seagrass west dominance macroalgal east. Underlying this shift were both (i.e. food choice) The selectivity was consistent among temperate warm-affiliated herbivores. Our findings suggest can contribute increased vulnerability seaweed communities reduced meadows tropicalized

Language: Английский

Citations

27
The ecological and evolutionary consequences of tropicalisation DOI Creative Commons
Karolina Zarzyczny, Marc Rius, Suzanne T. Williams

et al.

Trends in Ecology & Evolution, Journal Year: 2023, Volume and Issue: 39(3), P. 267 - 279

Published: Nov. 28, 2023

Tropicalisation is a marine phenomenon arising from contemporary climate change, and characterised by the range expansion of tropical/subtropical species retraction temperate species. occurs globally can be detected in both tropical/temperate transition zones regions. The ecological consequences tropicalisation single-species impacts (e.g., altered behaviour) to whole ecosystem changes phase shifts intertidal subtidal habitats). Our understanding evolutionary limited, but emerging evidence suggests that could induce phenotypic change as well genotypic composition expanding retracting Given rapid rate research on focusing functioning, biodiversity socioeconomic urgently needed.

Language: Английский

Citations

21
Taxa‐dependent temporal trends in the abundance and size of sea urchins in subtropical eastern Australia DOI Creative Commons
Emily McLaren, Brigitte Sommer, John M. Pandolfi

et al.

Ecology and Evolution, Journal Year: 2024, Volume and Issue: 14(5)

Published: May 1, 2024

Abstract Subtropical reefs host a dynamic mix of tropical, subtropical, and temperate species that is changing due to shifts in the abundance distribution response ocean warming. In these transitional communities, biogeographic affinity expected predict changes composition, with projected increases tropical declines cool‐affinity species. Understanding population dynamics along transition zones critical, especially for habitat engineers such as sea urchins can facilitate ecosystem through grazing. We investigated on coral‐associated subtropical at 7 sites eastern Australia (28.196° S 30.95° S) over 9 years (2010–2019), period impacted by warming heatwaves. Specifically, we density size structure taxa ( Centrostephanus rodgersii, Phyllacanthus parvispinus ), Tripneustes australiae ) Diadema spp.) affinities. Counter expectation, did not explain abundances this region. Although increase their cold range boundaries, declined across all sites. The T. also showed declines, while populations C. rodgersii were remarkably stable throughout our study period. Our results show temporal patterns urchin region cannot be predicted bio‐geographic alone contribute critical information about important herbivores zone.

Language: Английский

Citations

3
Predator‐induced defences under tropicalisation: A biogeographic approach DOI Creative Commons
Phillip B. Fenberg, Rodrigo Beas‐Luna, Boris Igić

et al.

Journal of Biogeography, Journal Year: 2023, Volume and Issue: 50(12), P. 2148 - 2159

Published: Sept. 19, 2023

Abstract Aim The biogeography of predator‐induced defences is an understudied area predator–prey dynamics. Range overlap with predators that induce the response and local demographics (e.g., prey abundances) are likely to be important factors for determining biogeographic distribution induced within species. However, climate warming, range‐expanding warm‐water increasingly preying upon temperate This a consequence wider phenomenon known as tropicalisation. We aim determine: (i) if individuals barnacle (‘bent morphs’) primarily present where they co‐occur (muricid snails) and, (ii) bent morphs size‐structured populations. Location North‐eastern Pacific rocky intertidal zone (~26–40° N). Taxon Tetraclita rubescens (Nilsson‐Cantell, 1931), Balanomorpha. Methods use photoquadrats from sites across range T. determine populations assess size‐structure. combination field surveys, literature, museum occurrences between cool their association abundance patterns . Results Bent commonly found equatorward portion species' (where abundances highest), in overlapping predators. occur smaller size classes. Main conclusions To partly resilient effects tropicalisation, must acclimatise/adapt altered Predator‐induced one way do this. show species ( ) largely restricted large‐bodied evidence partial resilience tropicalisation provides rationale further exploration eco‐evolutionary consequences this study system others.

Language: Английский

Citations

4
Enhancing survivorship and growth of juvenile Montipora capitata using the Hawaiian collector urchin Tripneustes gratilla DOI Creative Commons
Andrew R. Barrows, Joshua R. Hancock, David Cohen

et al.

PeerJ, Journal Year: 2023, Volume and Issue: 11, P. e16113 - e16113

Published: Sept. 27, 2023

The biodiversity of coral reef habitats is rapidly declining due to the effects anthropogenic climate change, prompting use active restoration as a mitigation strategy. Sexual propagation can maintain or enhance genetic diversity in these ecosystems, but approaches suffer from range inefficiencies rearing and husbandry. Algal overgrowth juveniles major bottleneck production sexually propagated corals that may be alleviated by co-culture with herbivores. We reared juvenile Montipora capitata alongside native Hawaiian collector urchins, Tripneustes gratilla, for 15 weeks documented significant ecological benefits co-culture. Urchin treatments significantly increased survivorship aggregates (14%) individual settlers (24%). also increase growth presence urchins. These results demonstrate utility microherbivory promoting ex situ conditions, providing valuable insight pipelines species.

Language: Английский

Citations

2
Opposing genetic patterns of range shifting temperate and tropical gastropods in an area undergoing tropicalisation DOI Creative Commons
Karolina Zarzyczny, Michael E. Hellberg, Elena B. Lugli

et al.

Journal of Biogeography, Journal Year: 2023, Volume and Issue: 51(2), P. 246 - 262

Published: Oct. 18, 2023

Abstract Aim The poleward range expansion of tropical species, and contraction temperate species (known as tropicalisation) has mainly been studied from an ecological perspective, with little research on its genetic consequences. Here, we used distributional data to document the consequences tropicalisation in rocky shore gastropods assess more broadly future implications phylogeographic patterns. Location Nineteen sampling sites along >3000 km eastern Pacific intertidal zone, tip Baja California Peninsula southern California. Taxon Temperate gastropods: Lottia conus , L. strigatella Fissurella volcano Tegula gallina. Tropical rubropicta Nerita funiculata N. scabricosta. Methods We determine historical modern distributions by combining records current field surveys. Using a section cytochrome oxidase subunit I gene, utilised comparative phylogeography, analysis molecular variance, F ST pairwise comparison, mismatch haplotype differences neutrality tests detect signatures better understand Results identified contractions two all three species. detected through unimodal strongly negative values for Fu Li D * statistics. found population subdivision breaks although geographic location differed among Main Conclusions Genetic surveys indicate recent expansions supporting coastline. Conversely, suggesting that may cause erosion evolutionary distinct lineages range‐contraction. different locations suggests some barriers are specific.

Language: Английский

Citations

2