Laurien, Malien, Spiecker, Lisa, Luhrmann, Lena, Mende, Lara, Dammann, Wiebke, Clemmesen, Catriona and Gerlach, Gabriele (2024) Time-compensated sun compass in juvenile sprat ( Sprattus sprattus ) reveals the onset of migratory readiness. Journal of Experimental Biology, 227 (5). Art.Nr. jeb246188. DOI 10.1242/jeb.246188.

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Abstract

Sprat (Sprattus sprattus) is one of the most commercially exploited fish species in the Baltic Sea and expresses a pronounced seasonal migration pattern. Spawning takes place, among other places, in the Kiel Bight and Kiel Fjord in early summer. Juvenile sprat leave the nursery areas in late summer/early autumn to move to their feeding and overwintering grounds. What kind of orientation mechanisms sprat use for migration is not known yet. This study shows that juvenile sprat can use a time-compensated sun compass, heading towards the northeast, in the direction of their proposed overwintering grounds in Bornholm Basin. The sprats tested at the end of August oriented themselves in the predicted direction, whereas the sprats tested at the beginning of August only showed a random orientation. For the first time, this demonstrates the onset of migratory readiness in juvenile sprat, indicating the preparation for starting their migration.

Document Type:	Article
Keywords:	Clupeidae; Fish; Migration; Orientation behaviour; Teleost
Research affiliation:	OceanRep > GEOMAR > FB3 Marine Ecology > FB3-EV Marine Evolutionary Ecology HGF-HIFMB
Main POF Topic:	PT6: Marine Life
Refereed:	Yes
Open Access Journal?:	No
Publisher:	The Company of Biologists
Related URLs:	SCOPUS Web of Science
Date Deposited:	18 Mar 2024 09:33
Last Modified:	22 Apr 2024 13:19
URI:	https://oceanrep.geomar.de/id/eprint/60112

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