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Observational dataset of behavioral response of three-spined sticklebacks to TNT exposure in a closed laboratory setup

Dumped munition in the German North Sea and Baltic Sea pose environmental risks as corrosion of the munition shells results in the leakage of the explosive 2,4,6-trinitroluene (TNT) into the marine environment. Uptake of TNT by marine biota and the associated negative effects on organisms are of major concern. This dataset reports behavioral responses of three-spined stickleback (Gasterosteus aculeatus) to environmentally relevant concentrations of TNT. Experimental sticklebacks were laboratory-bred and held in groups of 30 individuals in 60 L tanks in the fish facilities at the Thünen Institute of Fisheries Ecology in Bremerhaven. Parental sticklebacks originated from the Weser estuary (Luneplate, Bremerhaven, Germany, 53°28'36.9" N; 8°31'08.9" E) and were collected in April 2023. A total of 60 sticklebacks were tested in a controlled laboratory setup at the fish facilities at the Thünen Institute in Bremerhaven, containing two hideout zones formed by artificial plants. Each hideout was connected to an infusion system delivering either a TNT solution (100 µg/L) or control water into the zone currently occupied by the fish. Experimental trials were video-recorded to enable post hoc behavioral analysis. Behavioral metrics included the total time spent in the exposed hideout zone (s), latency to first leave the exposed hideout zone (s), and the number of crossings between hideout zones.

Gasterosteus aculeatus F1 offspring (fry) length depending on parent and offspring heatwave treatment at 30, 60 and 90 days post-hatch

F1 offspring (fry) length (mm) depending on parent and offspring heatwave treatment at 30, 60 and 90 days post-hatch

Gasterosteus aculeatus F2 hatchling length, clutch size and average egg diameter of the clutch depending on grandparent and parent heatwave treatment

F2 hatchling length (mm), clutch size (total number of eggs) and average egg diameter (mm) of the clutch depending on grandparent and parent heatwave treatment

Gasterosteus aculeatus hatchling length upon hatching depending on parental heatwave treatment, including average egg size of the clutch and clutch size

Hatchling length (mm) upon hatching depending on parental heatwave treatment, and including average egg size of the clutch (mm) and clutch size (total number of eggs)

Gasterosteus aculeatus clutch size, average egg size diameter per clutch, fertilization success, hatching success and maternal size depending on parental heatwave treatment

We measured several fecundity traits for each clutch of fertilized eggs including clutch size (total number of eggs), average egg size (diameter (mm)), fertilization success and hatching success. The diameter (mm) of all eggs in a clutch was measured to estimate average egg size.

Gasterosteus aculeatus F1 adult clutch size, average egg diameter, and maternal length depending on grandparent and parent heatwave treatment

F1 adult clutch size (total eggs), average egg diameter (mm) plus the standard deviation, and maternal length (mm) depending on grandparent and parent heatwave treatment

Length and weight of F0 wild-caught adults Gasterosteus aculeatus (males and females) used for breeding in heatwave experiment

Fish were brought to the laboratory at the AWI Wadden Sea Station Sylt and used as breeding adults for a multi-generation laboratory experiment investigating the effects of marine heatwaves on stickleback fitness-related traits. These F0 generation wild-caught adults (males and females) were acclimated to three heatwave scenarios (no heatwave control, single heatwave or double heatwave) for three months before breeding (starting 12 June 2022) via artificial fertilization.

Long-term survival of Gasterosteus aculeatus F1 offspring throughout the 2 year experiment (at 409, 611 and 717 days post-hatch) depending on parent and offspring heatwave treatment

Long-term survival of F1 offspring throughout the 2 year experiment (at 409, 611 and 717 days post-hatch) depending on parent and offspring heatwave treatment

Gasterosteus aculeatus F1 offspring as adults used for breeding the F2 generation showing the number of males and females in the experiment, and the % of those that went into breeding condition depending on grandparent and parent heatwave treatment

F1 offspring as adults used for breeding the F2 generation showing the number of males and females in the experiment, and the % of those that went into breeding condition depending on grandparent and parent heatwave treatment

Gasterosteus aculeatus activity rate and total percent of arena explored by F1 offspring depending on offspring heatwave treatment

Activity rate (average sum of distance in cm) and total percent of arena explored by F1 offspring depending on offspring heatwave treatment

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