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Not all who meander are lost: migrating sea lamprey follow river thalwegs to facilitate safe and efficient passage upstream.
J Exp Biol
January 2025
Michigan State University, Department of Fisheries and Wildlife, East Lansing, MI, USA.
Efficient navigation is crucial for the reproductive success of many migratory species, often driven by competing pressures to conserve energy and reduce predation risk. Little is known about how non-homing species achieve this balance. We show that sea lamprey (Petromyzon marinus), an ancient extant vertebrate, uses persistent patterns in hydro-geomorphology to quickly and efficiently navigate through complex ecosystems.
View Article and Find Full Text PDFDiscrepancies in the number of lines of arrested growth (LAG) in the tissues of the humerus and phalanx of sea turtles.
Naturwissenschaften
January 2025
Sea Turtle Research and Application Center, Çanakkale Onsekiz Mart University, Çanakkale, Türkiye.
Information on the age of vertebrate species such as sea turtles is crucial for planning management and conservation actions. The age of sea turtles has been estimated by skeletochronological analysis using skeletal growth marks in different bones. This study focused on the consistency of the number of visible lines of arrested growth (LAG) observed from the humerus and phalanx bone used for age estimation in Chelonia mydas and Caretta caretta.
View Article and Find Full Text PDFDegenerated vision, altered lipid metabolism, and expanded chemoreceptor repertoires enable Lindaspio polybranchiata to thrive in deep-sea cold seeps.
BMC Biol
January 2025
CAS Key Laboratory of Marine Ecology and Environmental Sciences, and Center of Deep Sea Research, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China.
Background: Lindaspio polybranchiata, a member of the Spionidae family, has been reported at the Lingshui Cold Seep, where it formed a dense population around this nascent methane vent. We sequenced and assembled the genome of L. polybranchiata and performed comparative genomic analyses to investigate the genetic basis of adaptation to the deep sea.
View Article and Find Full Text PDFCoastal vulnerability to extreme weather events: An integrated analysis of erosion, sediment movement, and land subsidence based on multi-temporal optical and SAR satellite data.
J Environ Manage
February 2025
Department of Civil and Environmental Engineering, Gangneung-Wonju National University, Gangneung, Gangwon-do, 25457, South Korea. Electronic address:
Coastal areas undergo continuous transformations, altering their geometry under the influence of external forces like tides, waves, and extreme events. Thus, monitoring the impact of extreme weather events on coastal regions is crucial to prevent potential cascading hazards. Here, we utilized time-series optical and SAR satellite data and tide records, coupled with sophisticated analytical techniques, to analyze erosion processes, sediment transport, and vertical land movement (VLM) at an embayed sandy beach (i.
View Article and Find Full Text PDFBiodegradable twine for trawl fishing: Seawater ageing and net modelling.
Mar Pollut Bull
December 2024
Le Drezen, 12 rue de Kélareun, Le Guilvinec 29730, France.
Fishing gears are designed to catch marine species, but when lost at sea, they can continue to trap and kill aquatic life, a phenomenon known as ghost fishing. This study evaluated the use of a biodegradable twine made from poly(butylene succinate)/poly(butylene adipate terephthalate) (PBS/PBAT) in trawl fishing. The assessment included mechanical testing, trawl modelling, and seawater ageing simulations to explore potential loss scenarios.
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