Author:
Pekkoeva S. N.,Kondakova E. A.,Falk-Petersen S.,Berge J.,Murzina S. A.
Abstract
AbstractHistological studies of the ontogenetic changes in Arctic marine fishes are often fragmented and incomplete. Here we present a comprehensive histological ontogenetic analysis of the daubed shanny (Leptoclinus maculatus) from the Arctic, characterizing its development as it undergoes a series of changes in the organ and tissue organization, especially during the postlarvae transition from the pelagic to benthic lifestyle. The thyroid, heart, digestive tract, liver, gonads, blood, and the lipid sac of the postlarvae at different developmental stages (L1–L5) were studied for the first time. We found that L. maculatus has structural characteristics of marine fish developing in cold, high-oxygen polar waters. We conclude that the presence of the lipid sac and the absence of distinguishable red blood cells in pelagic postlarvae are unique features of the daubed shanny most likely linked to its successful growth and development in the Arctic environment.
Funder
Grants of the President of the Russian Federation
The Ministry of Science and Higher Education of the Russian Federation
The Norwegian Research Council
UiT The Arctic University of Norway
Publisher
Springer Science and Business Media LLC
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