RT Journal Article
T1 Male Deep-Sea Shrimps Aristeus antennatus at Fishing Grounds: Growth and First Evaluation of Recruitment by Multilocus Genotyping
A1 Abras, Alba
A1 García Marín, José Luis
A1 Heras, Sandra
A1 Vera Rodríguez, Manuel
A1 Agulló, Melania
A1 Planella, Laia
A1 Roldán, María Inés
K1 Aristeus antennatus
K1 Microsatellite loci
K1 Male recruitment
K1 Fishing grounds
K1 Deep-sea species
AB The population biology of the deep-sea shrimp Aristeus antennatus, as with other exploited demersal species, is usually studied using data from fishery statistics. Such statistical analyses have shown female-biased sex ratios during the spawning season in this species. Because the abundance of males increases at greater depths that are not exploited by fisheries (virgin grounds), knowledge on their recruitment is limited. Here, the growth and recruitment of A. antennatus males at fishing grounds was evaluated. This was achieved by integrating information on previously identified breeding behaviours and by tracing the young-of-year cohort through genotyping at 10 microsatellite loci. Using a codend and a codend cover with distinct meshed windows, four groups of males were collected in winter and in a subsequent spawning summer season. Summer collections were mostly composed of pre-adult males, reaching sizes that are to be expected from the growth of winter juveniles; however, many specimens also originated from nearby grounds. This result indicates the horizontal dispersal of male juveniles via intermediate and deep oceanographic currents. Such dispersal complements passive larval dispersal in surface waters, and contributes to the weak genetic divergence among regional fishing grounds. These features could be shared by other deep-sea crustacean and fish species, and should be considered for the sustainable exploitation of demersal fisheries
PB MDPI
YR 2021
FD 2021
LK http://hdl.handle.net/10347/24435
UL http://hdl.handle.net/10347/24435
LA eng
NO Life 2021, 11(2), 116; https://doi.org/10.3390/life11020116
NO This work was supported by a grant from Spanish Ministerio de Economia y Competitividad (CTM2014-54648-C2-2-R) to M.I.R. L.P. and M.A. benefited from predoctoral fellowship from the Universitat de Girona (BR2014 and IFUdG2018, respectively)
DS Minerva
RD 24 abr 2026