Skip to main content

IMIS

A new integrated search interface will become available in the next phase of marineinfo.org.
For the time being, please use IMIS to search available data

 

[ report an error in this record ]basket (0): add | show Print this page

Temperature and prey density drive growth and otolith formation of the world's most valuable fish stock
Ofelio, C.; Moyano, M.; Sswat, M.; Rioual, F.; Moullec, F.; Aguirre-Velarde, A.; Peck, M.A. (2023). Temperature and prey density drive growth and otolith formation of the world's most valuable fish stock. NPG Scientific Reports 13(1). https://dx.doi.org/10.1038/s41598-023-43168-w
In: Scientific Reports (Nature Publishing Group). Nature Publishing Group: London. ISSN 2045-2322; e-ISSN 2045-2322, more
Peer reviewed article  

Available in  Authors 

Keyword
    Marine/Coastal
Author keywords
    Marine biology; Phenology

Authors  Top 
  • Ofelio, C.
  • Moyano, M.
  • Sswat, M.
  • Rioual, F.
  • Moullec, F., more
  • Aguirre-Velarde, A.
  • Peck, M.A., more

Abstract
    Peruvian anchovy (Engraulis ringens) represents the largest single-species fishery worldwide. Knowledge on how temperature and prey availability influences growth and age estimation during marine fish early life stages is critical for predicting bottom-up processes impacting stock productivity under changing environmental conditions. We reared Peruvian anchovy larvae at two temperatures (14.5 and 18.5 °C) and prey concentrations [high (HF), and low (LF)] from 6 to 30 days post-hatch (dph) to measure growth rate and examine daily deposition of otolith increments. Peruvian anchovy larvae grew faster at 18.5 °C compared to 14.5 °C. Larvae reared at low prey concentration (18.5-LF) and low temperature (14.5-HF) grew 61 and 35% slower, respectively, than those at high prey and warm temperature (18.5-HF). Age and growth rates of larvae were well depicted in the otolith microstructure of well-fed larvae at 18.5 °C. However, larvae reared at 18.5-LF or 14.5-HF, had only 55 and 49% of the expected number of daily otolith increments. Our results suggest caution when attempting to explore how ocean processes regulate small pelagic stocks, the productivity of which are largely driven by changes in the survival and growth of young larvae.

All data in the Integrated Marine Information System (IMIS) is subject to the VLIZ privacy policy Top | Authors