@article{fdi:010088071,
  title = {{I}nfluence of combined temperature and food availability on {P}eruvian anchovy ({E}ngraulis ringens) early life stages in the northern {H}umboldt {C}urrent system : a modelling approach},
  author = {{F}lores-{V}aliente, {J}. and {L}ett, {C}hristophe and {C}olas, {F}ran{\c{c}}ois and {P}ecquerie, {L}aure and {A}guirre-{V}elarde, {A}. and {R}ioual, {F}. and {T}am, {J}. and {B}ertrand, {A}rnaud and {A}yon, {P}. and {S}all, {S}. and {B}arrier, {N}icolas and {B}rochier, {T}imoth{\'e}e},
  editor = {},
  language = {{ENG}},
  abstract = {{I}n the northern {H}umboldt {C}urrent system ({NHCS}), the {P}eruvian anchovy ({E}ngraulis ringens) constitutes the bulk of landings and has a significant socioeconomic contribution. {U}nderstanding the impact of environment on the early-life stages of anchovy and further population dynamics remains challenging. {C}limate variability at a variety of scales modulates currents velocity, temperature and food availability, impacting early-life stages drift, growth and survival. {I}n order to investigate these impacts, we developed {I}chthyop-{DEB}, an individual-based model including larval retention processes and a {D}ynamic {E}nergy {B}udget ({DEB}) bioenergetic module for larval growth. {F}irst, we assessed the effect of hydrodynamic simulations horizontal resolution on simulated larval retention patterns using a recruitment age-criterion of 30 days. {T}hen, we evaluated the impact of the following biological processes on simulated larval recruitment patterns: (i) a minimum size-criterion (2 cm), as opposed to a minimum age-criterion (30 days), to be considered as recruited, (ii) the upper larval thermal limit tolerance of the species, for which lab experiments are lacking, and (iii) a constant larval mortality rate. {W}e found that using different resolutions of the hydrodynamic model (10 and 2 km) led to similar simulated larval retention patterns. {R}etention was highest when spawning occurred in the superficial layer (0-15 m) in austral winter and in the deepest considered layer (30-45 m) in summer. {C}oupling with the {DEB} model produced contrasted growth patterns on the continental shelf with a strong month-latitude interaction. {L}arval recruitment was strongest from 6 degrees to 10 degrees {S} in austral summer, largely contributing to the average seasonal pattern. {D}epending on the temperature correction function tested with the bioenergetic module, simulated larval recruitment could also be strong in the northernmost zone (2 degrees-4 degrees {S}), an area not known for abundant anchovy populations, which suggests a possible thermal growth limitation. {F}inally, sensitivity tests performed on larval growth limitation by food suggested a deficiency in food supply in the southernmost zone (18 degrees-20 degrees {S}).},
  keywords = {{I}chthyop-{DEB} model ; {E}arly life stages survival ; {P}eruvian anchovy ; {L}arval ; drift ; {L}arval growth ; {PACIFIQUE}},
  booktitle = {},
  journal = {{P}rogress in {O}ceanography},
  volume = {215},
  numero = {},
  pages = {103034 [12 p.]},
  ISSN = {0079-6611},
  year = {2023},
  DOI = {10.1016/j.pocean.2023.103034},
  URL = {https://www.documentation.ird.fr/hor/fdi:010088071},
}