Brown Trout Egg Size Variation Between Wild and Captive Females in Swiss Lakes

2019-2022 data from Switzerland used to examine clutch-mean egg diameter and within-clutch variation in brown trout. The dataset contains 273 egg clutches collected from wild and captive broodstock females across three peri-Alpine lakes. It was created by Kunio Takatsu and includes size-adjusted egg traits derived from linear models.

Use Cases

• Compare egg size traits between wild and captive-bred fish based on the 'captive.wild' and 'adjusted.egg.d' variables.
• Analyze the relationship between female body size and egg characteristics based on 'SL' and 'egg.diameter'.
• Investigate geographic variation in reproductive traits across lake watersheds based on the 'lake' and 'lake.origin' fields.
• Model within-clutch egg size variation using the 'CV.diameter' and 'log.CV' columns.

Strengths

• Contains 273 egg clutches (133 wild, 140 captive) providing a substantial sample for comparison.
• Includes size-adjusted egg traits (e.g., 'adjusted.egg.d'), which control for the influence of female body length.
• Data spans a multi-year period (2019-2022) and three distinct geographic locations in Switzerland.

Limitations

• Row count is unknown, which may limit suitability assessment.
• Column-level documentation is absent; field semantics must be inferred after download.

Provenance

Source

figshare

Collection Method

Egg clutches were collected and measured; linear models were fitted to obtain size-adjusted traits.

Time Range

2019-2022

Freshness

Last updated 2026-05-28 04:03:18; freshness should be verified.

Geography

Switzerland (Lake Constance, Lake Lucerne, Lake Zurich)