Embryonic development and effect of temperature on larval growth of the Peruvian anchovy Engraulis ringens

• DOI: 10.1111/jfb.14882
• Publication Date: 2021-08-19T09:10:06Z
• Authors: Fanny Rioual; Claudia Ofelio; Maryandrea Rosado...; Jhon Dionicio‐Acedo; Myron A. Peck; Arturo Aguirre‐Ve...
• Keywords: Engraulis

Understanding aspects of the biology early life stages marine fish is critical if one hopes to reveal factors and processes that impact survival recruitment (year class) strength. The Peruvian anchovy (Engraulis ringens) a key species in Humboldt current system, present study provides first description embryonic larval development this reared captivity. Embryonic exogenous feeding larvae were illustrated detail at 18.5°C. Hatching was completed within 42 48 h post-fertilization 18.5 14.5°C, respectively. Mean ± 95% C.I. standard length (LS ) hatch (3.40 0.10 mm 18.5°C 2.76 0.34 14.5°C) significantly different between two temperatures. Larval behaviour assessed 18.5°C; onset [3 days post-hatch (dph)], fed small, motile dinoflagellates, Akashiwo sanguinea. At 7 dph, started feed almost exclusively on zooplankton (rotifers Artemia nauplii). activity increased with age, sign schooling noted 31 dph (18.56 LS Temperature had significant effect size-at-age, but not body shape (depth ratio). size-at-age data for (this study) used parameterize temperature-corrected von Bertalanffy growth function anchovy, accuracy which juveniles adults (literature values).