Publication details.

Paper

Year:2019
Author(s):Even Moland, Stephanie M. Carlson, David Villegas Ríos, Jørgen Ree Wiig, Esben Moland Olsen
Title:Harvest selection on multiple traits in the wild revealed by aquatic animal telemetry
Journal:Ecology and Evolution
ISSN:2045-7758
Volume:9
Issue No.:11
Pages:6480-6491
D.O.I.:10.1002/ece3.5224
Web:https://onlinelibrary.wiley.com/doi/epdf/10.1002/ece3.5224
Abstract:
Harvesting can have profound impacts on the ecology and evolution of marine popu‐
lations. However, little is known about the strength and direction of fisheries‐induced
selection acting on multiple traits in the wild. Here, we used acoustic telemetry to
directly monitor individual behavior and fate in an intensively harvested species, the
European lobster (
Homarus gammarus
,
n
= 100), in southern Norway. Overall, 24% of
the tracked lobsters survived the two‐month harvest season within the study area.
Our results indicated that local survival was not random with respect to phenotype.
We found no clear support for fisheries‐induced selection acting directly on body
size. However, lobsters with large crusher claws relative to their body size, typical
of socially dominant individuals, appeared at higher risk of being captured in the
conventional trap fishery. We also detected a fine‐scale spatial gradient in survival.
After accounting for this gradient, individuals displaying larger home ranges were
more likely to survive the harvest season. Finally, we found significant repeatabilities
for lobster behavior on a monthly timescale, indicating that individual behavioral at
tributes tended to persist and may reflect personality. Our study therefore provides
empirical support for the need to consider an evolutionary enlightened approach to
fisheries management that considers the influence of harvest on multiple traits of
target species.Harvesting can have profound impacts on the ecology and evolution of marine popu‐
lations. However, little is known about the strength and direction of fisheries‐induced
selection acting on multiple traits in the wild. Here, we used acoustic telemetry to
directly monitor individual behavior and fate in an intensively harvested species, the
European lobster (
Homarus gammarus
,
n
= 100), in southern Norway. Overall, 24% of
the tracked lobsters survived the two‐month harvest season within the study area.
Our results indicated that local survival was not random with respect to phenotype.
We found no clear support for fisheries‐induced selection acting directly on body
size. However, lobsters with large crusher claws relative to their body size, typical
of socially dominant individuals, appeared at higher risk of being captured in the
conventional trap fishery. We also detected a fine‐scale spatial gradient in survival.
After accounting for this gradient, individuals displaying larger home ranges were
more likely to survive the harvest season. Finally, we found significant repeatabilities
for lobster behavior on a monthly timescale, indicating that individual behavioral at
tributes tended to persist and may reflect personality. Our study therefore provides
empirical support for the need to consider an evolutionary enlightened approach to
fisheries management that considers the influence of harvest on multiple traits of
target species.

Related staff

  • David Villegas Rios
  • Related departments

  • Marine Ecology
  • Related projects

  • BEMAR (CTA.137.3)
  • Related research groups

  • Marine Ecosystems Dynamics
  • Related files

  • Moland_et_al-2019-Ecology_and_Evolution.pdf