Data from: Testing adaptive hypotheses on the evolution of larval life history in acorn and stalked barnacles
| Main Authors: | Ewers-Saucedo, Christine, Pappalardo, Paula |
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| Format: | info dataset eJournal |
| Terbitan: |
, 2020
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/3998266 |
Daftar Isi:
- Despite strong selective pressure to optimize larval life history in marine environments, there is a wide diversity with regard to developmental mode, size and time larvae spend in the plankton. In the present study, we assessed if adaptive hypotheses explain the distribution of the larval life history of thoracican barnacles within a strict phylogenetic framework. We collected environmental and larval trait data for 170 species from the literature, and utilized a complete thoracican synthesis tree to account for phylogenetic non-independence. In accordance with Thorson's rule, the fraction of species with planktonic-feeding larvae declined with water depth and increased with water temperature, while the fraction of brooding species exhibited the reverse pattern. Species with planktonic-nonfeeding larvae were overall rare, following no apparent trend. In agreement with the "size advantage" hypothesis proposed by Strathmann in 1977, egg and larval size were closely correlated. Settlement-competent cypris larvae were larger in cold water, indicative of advantages for large juveniles when growth is slowed. Planktonic larval duration, on the other hand, was uncorrelated to environmental variables. We conclude that different selective pressures appear to shape the evolution of larval life history in barnacles.
- Larval life history traits and geographic distribution for each thoracican barnacle species used in the studyThe table contains the species-specific larval life history data we extracted from the literature. In the first tab, "Taxonomy + larval mode", there is one row per species. The taxonomy is taken from WoRMS (www.marinespecies.org). The following two tabs contain information on other larval traits and the known geographic distribution of the barnacle species. In these tabs, each species can occur several times, as we chose to give each reference a separate row. The references are detailed in the datatable_references file associated with this table. The meaning of all columns is explained in the last tab "METADATA". Detailed references for the data sources are available in the last tab "Data sources".datatable.xls