Please use this identifier to cite or link to this item:
Files in This Item:
There are no files associated with this item.
Title: Growth patterns of two Red Sea mesopelagic fishes
Authors: Aldanondo, Naroa; Kaartvedt, Stein; Irigoien, Xabier
Abstract: Growth patterns and hatch-date distributions of two mesopelagic Red Sea fishes, Vinciguerria mabahiss and Maurolicus mucronatus, were inferred from otolith microstructure analysis. Estimated somatic growth rates were lower than other mesopelagic fish at similar tropical and subtropical latitudes. Low zooplankton concentrations and high Red Sea water temperatures may explain the low growth rates observed. Maurolicus mucronatus grew faster (0.15 +/- 0.005 mm day(-1)) than V. mabahiss (0.13 +/- 0.003 mm day(-1)). Growth differences could be attributed to different vertical distributions and migration patterns. Significant differences in somatic growth between locations were also observed for V. mabahiss. Individuals at Kebrit (24 degrees 48' N) grew significantly faster (0.16 +/- 0.005 mm day(-1)) than those at the warmer, more southern (21 degrees 27' N) Atlantis II station (0.12 +/- 0.003 mm day(-1)). For V. mabahiss, otolith increment width at age was similar at hatching times throughout the late spring/summer and autumn. However, for M. mucronatus, growth trajectories were hatch-date dependent, with the earliest cohorts displaying the highest maximum growth rates. This study provides baseline data which will be essential for a better understanding of their population dynamics.
Keywords: Mesopelagic fish; Growth; Hatch-date distribution; Red Sea; Otolith; Vinciguerria mabahiss; Maurolicus mucronatus; MYCTOPHUM-ASPERUM PISCES; INCREMENT FORMATION; EASTERN GULF; VERTICAL-DISTRIBUTION; ZOOPLANKTON; TEMPERATURE; OTOLITHS; ECOLOGY; DEEP; MICROSTRUCTURE
Issue Date: 2023
Type: Article
DOI: 10.1007/s00227-022-04144-6
ISSN: 0025-3162
E-ISSN: 1432-1793
Funder: KAUST
Appears in Publication types:Artículos científicos

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.