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ICEFLUX allometric measurements of polar zooplankton and fish

This dataset summarizes allometric measurements on zooplankton and nekton species performed in the framework of the Dutch and German ICEFLUX projects. Measurements were performed on 639 individuals of 15 species from the Southern Ocean and 2374 individuals of 14 species from the Arctic Ocean, including euphausiids, fish, pelagic and ice-associated amphipods, cnidarians, salps, siphonophores, chaetognaths and a copepod. Animals were collected during three expeditions in the Southern Ocean (winter and summer) and three expeditions in the Arctic Ocean (spring and summer). In addition to measurements on length and mass, the sizes of body parts were measured, such as carapaces, eyes, heads, telsons, tails and otoliths.

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 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

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

Short-term survival of Gasterosteus aculeatus F1 offspring during the 90 day growth experiment depending on parent and offspring (beaker) heatwave treatment

Short-term survival of F1 offspring during the 90 day growth experiment depending on parent and offspring (beaker) heatwave treatment

Exploration behavior of Gasterosteus aculeatus F1 offspring in terms of time spent exploring and percent of arena explored depending on offspring heatwave treatment

Exploration behavior of F1 offspring in terms of time spent exploring (seconds) and percent of arena explored depending on offspring heatwave treatment.

Stickleback (Gasterosteus aculeatus) marine heatwave experiment: F0 adult size and fecundity traits, F1 offspring growth, behavior and survival, and F2 offspring egg size, clutch size, and hatchling length

The data contains information about marine stickleback (Gasterosteus aculeatus) used in a multi-generation laboratory breeding experiment investigating the effects of heatwaves on marine species. Adult stickleback were caught by trawling in the Sylt-Romo Bight (Lat: 55.0252; Long: 8.436) between 3 Feb and 10 March 2022. 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. 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. Each clutch of fertilized eggs was then split among the same three heatwave scenarios, and growth of the F1 offspring in the 9 heatwave treatment combinations was assessed at hatching, 30 days, 60 days and 90 days post-hatch. F1 offspring were also used to estimate two behavior traits (activity rate and exploration), and both short-term (up to 90 days post-hatch) and long-term (until F1 adult breeding) survival. When F1 offspring were ca. two years old, they were used as breeding adults (between 19 April- 28 May 2024) for the F2 generation, and the same fecundity traits as in the F0 were measured (clutch size, average egg size, fertilization success, hatching success), as well as F2 hatchling size.

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.

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