Data from: Multiple mating and the genetic structure of wild populations of the sexually cannibalistic praying mantid Tenodera sinensis (Mantodea: Mantidae)
Data files
Jul 02, 2026 version files 43.15 KB
-
Mantid_Data_.xlsx
40.69 KB
-
README.md
2.45 KB
Abstract
Opportunity for multiple mating should affect the fitness cost of sexual cannibalism for males. We used newly developed microsatellite loci to study multiple paternity in a wild population of the sexually cannibalistic praying mantid, Tenodera sinensis. We show a high rate of multiple paternity, with offspring from 84% of oothecae (egg cases) sired by multiple males. We also show a low level of paternal skew, suggesting sperm mixing within the spermatheca and opportunity for sperm competition. Together, these results suggest significant fitness benefits of multiple mating for males and thus significant sexual conflict over sexual cannibalism, a result consistent with previous behavioral studies. We also use these data on allelic variation for a first look at the genetic structure of mantid populations. Our results show significantly greater homozygosity than expected due to both inbreeding and differentiation among local populations, suggesting restricted dispersal among local populations.
Dataset DOI: 10.5061/dryad.q83bk3jwd
Description of the data and file structure
This dataset contains the data for Wilczymski et al. (in review), studying multiple paternity, paternity skew, and the genetic structure of the sexually cannibalistic mantid, Tenodera sinensis. Data cover three local populations in western New York. Genotype data include alleles from each of three microsatellite loci, SK1, SDDS4, and CRAM8. Alleles are identified by three digits corresponding to allele size (base pairs), and each diploid genotype contains a set of two alleles per locus. For paternity analysis, on the first page, we list individual genotypes that are organized by oothecae (egg case from a single female), and the maternal genotype ("mother") is identified when known. On the second page, we list allele frequencies for each locus. On the third page, we list the proportion of offspring sired by each father and the corresponding analysis of paternity skew, following the methods of Pamilo & Crozier (1996: Oikos 75:533-535). Finally, on the fourth page, we list the genotype array, organized by local population, formatted for analysis in Genepop (Raymond & Rousset 1995: J Heredity 86:248-249) and GenoDive (Meirmans 2020: Mol Ecol Res 20:1126-1131). We show a high rate of multiple paternity, with offspring from 84% of oothecae sired by multiple matings. We also show a low level of paternal skew, suggesting sperm mixing.
Files and variables
File: Mantid_Data_.xlsx
Description: The complete data set with four pages corresponding to (1) genotype data for paternity analysis, (2) overall allele frequencies, (3) analysis of paternity skew, and (4) genotype array for analyzing population F statistics
Variables
- Microsatellite loci: SK1, SDDS4, CRAM8
- Population abbreviations: Creek, Three, Science
- Oothecae: alphanumeric code with 1-4 characters (e.g., F2, F4, F5, CO4 and RC2)
- Alleles: three digits corresponding to size (base pairs) (e.g., 207 and 189)
- Genotypes: six digits corresponding to two alleles (e.g., 189189 and 226270)
- Relative proportion of offspring sired by male i (e.g., Pi1, Pi2, Pi3)
- Effective paternity (me) is calculated as $m_e = \frac{1}{\sum_{i=1}{N} p_i2}$