Differences in Prevalence of Multiple Paternity in the Spiny Spider Crab Maja Brachydactyla in Two Localities That Differ in Female Fecundity, Fishing Intensity, and Management Measures
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Differences in Prevalence of Multiple Paternity in the Spiny Spider Crab Maja Brachydactyla in Two Localities That Differ in Female Fecundity, Fishing Intensity, and Management MeasuresAutor(es)
Data
2021-04-29Cita bibliográfica
E Rodríguez-Pena, P Verísimo, O Tully, L Fernández, A Martínez-Lage, Differences in prevalence of multiple paternity in the spiny spider crab Maja brachydactyla in two localities that differ in female fecundity, fishing intensity, and management measures, ICES Journal of Marine Science, Volume 78, Issue 5, August 2021, Pages 1697–1710, https://doi.org/10.1093/icesjms/fsab060
Resumo
[Abstract] Many marine species are under high fishing pressure, which can cause alterations in their mating systems and the structure of their populations. The spiny spider crab Maja brachydactyla is a commercial decapod on the east Atlantic coast. In Galicia, the most exploited region in Spain, the landing of ovigerous females is prohibited, favouring exploitation focused on males. The removal of males, especially the largest ones, may lead to sperm limitation and a reduction in the average size over generations. In these cases, polyandry can work as a mechanism to protect females against sperm limitation and to increase genetic diversity and effective population size. This study analyses the multiple paternity in M. brachydactyla in two localities that differ in female fecundity, fishing intensity, and management measures. Our results showed multiple paternity in this species for the first time, with a moderate bias between sires. However, the frequency of multiple paternity was almost seven times higher in the intensely exploited Golfo Ártabro (NW Spain; 69%) than in Carna (W Ireland; 10%), where exploitation levels and female fecundity are lower.
Palabras chave
Brachyura
Maja brachydactyla
Microsatellite markers
Multiple paternity
Size- and sex-selective fishing
Sperm limitation
Spider crab
Maja brachydactyla
Microsatellite markers
Multiple paternity
Size- and sex-selective fishing
Sperm limitation
Spider crab
Descrición
Financiado para publicación en acceso aberto: Universidade da Coruña/CISUG
Versión do editor
Dereitos
Atribución 4.0 Internacional (CC BY 4.0)
ISSN
1095-9289
1054-3139
1054-3139