Population connectivity of fan-shaped sponge holobionts in the deep Cantabrian Sea
Creators
- 1. GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105 Kiel, Germany
- 2. Universidad Autónoma de Madrid, Departamento de Biología (Zoología), Cantoblanco 28049, Madrid, Spain, The Natural History Museum of London, Cromwell Road, London SW7 5BD, United Kingdom; Universidad de Alcalá, Departamento de Ciencias de La Vida, Apdo. 20, 28805, Alcalá de Henares, Spain
- 3. The Natural History Museum of London, Cromwell Road, London SW7 5BD, United Kingdom; Universidad de Alcalá, Departamento de Ciencias de La Vida, Apdo. 20, 28805, Alcalá de Henares, Spain
- 4. The Natural History Museum of London, Cromwell Road, London SW7 5BD, United Kingdom
- 5. Universidad de Alcalá, Departamento de Ciencias de La Vida, Apdo. 20, 28805, Alcalá de Henares, Spain; Instituto Español de Oceanografía. Centro Oceanográfico de Santander C/ Promontorio San Martín S/n, 39004, Santander, Spain
- 6. Universidad de Alcalá, Departamento de Ciencias de La Vida, Apdo. 20, 28805, Alcalá de Henares, Spain; Instituto Español de Oceanografía. Centro Oceanográfico de Gijón, C/ Príncipe de Asturias 70 Bis, 33212, Gijón, Asturias, Spain
- 7. Christian-Albrechts University of Kiel, Institute of Clinical Molecular Biology (IKMB), Rosalind-Franklin-Straße 12, 24105, Kiel, Germany
- 8. GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany
- 9. GEOMAR Helmholtz Centre for Ocean Research Kiel, Düsternbrooker Weg 20, 24105, Kiel, Germany; Christian-Albrechts University of Kiel, Christian-Albrechts-Platz 4, 24118, Kiel, Germany
Description
ABSTRACT
Connectivity is a fundamental process driving the persistence of marine populations and their adaptation potential in response to environmental change. In this study, we analysed the population genetics of two morphologically highly similar deep-sea sponge clades (Phakellia hirondellei and the ‘Topsentia-and-Petromica’ clade, (hereafter referred to as ‘TaP clade’)) at three locations in the Cantabrian Sea and simultaneously assessed the corresponding host microbiome by 16S rRNA gene sequencing. A virtual particle tracking approach (Lagrangian modelling) was applied to assess oceanographic connectivity in the study area. We observed overall genetic uniformity for both sponge clades. Notably, subtle genetic differences were observed for sponges of the TaP clade and also their microbiomes between a canyon and bank location, < 100 km apart and with the same depth range. The Lagrangian model output suggests a strong retention of larvae in the study area with variable inter-annual connectivity via currents between the three sampling regions. We conclude that geologic features (canyons) and the prevailing ocean currents may dictate sponge holobiont connectivity and that differentiation can emerge even on small spatial scales.
Notes
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Busch et al-1-s2.0-S0967063720302144-main.pdf
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