Data from: Encountering a bait is necessary but insufficient to explain individual variability in vulnerability to angling in two freshwater benthivorous fish in the wild
Monk, Christopher Thomas, Leibniz Institute of Freshwater Ecology and Inland Fisheries
Arlinghaus, Robert, Leibniz Institute of Freshwater Ecology and Inland Fisheries, Humboldt University of Berlin
Published Mar 06, 2018 on Dryad.
Cite this dataset
Monk, Christopher Thomas; Arlinghaus, Robert (2018). Data from: Encountering a bait is necessary but insufficient to explain individual variability in vulnerability to angling in two freshwater benthivorous fish in the wild [Dataset]. Dryad. https://doi.org/10.5061/dryad.4pr3r
Fish personality traits, such as swimming activity, or personality related emergent behavioural properties, such as space use, should affect encounter rates between fish and fishing gear. Increased encounters should in turn drive vulnerability to capture by passively operated fishing gears. However, empirical evidence documenting a relationship between activity-based behaviours and vulnerability to capture in the wild is limited. Using whole-lake acoustic telemetry, we first documented significant repeatabilities over several months of a suite of encounter rate-associated behaviours (swimming distance, activity space size, time on baited feeding sites, switching frequency among baited feeding sites, distance to the lake bottom) in two recreationally important benthivorous cyprinid species, the common carp (Cyprinus carpio) and tench (Tinca tinca). We then experimentally targeted both species using standard angling gear on baited feeding sites. Individual fish regularly visited the angling sites, documenting that the fishes encountered the angling baits. Carp were readily hooked within the first few days, after which catchability dropped to low levels characteristic of tench from the onset of the angling experiment. When attempting to explain individual variation in vulnerability, we failed to document significant relationships among a suite of repeatable encounter-based behaviours and vulnerability to angling for both species. There was also no evidence for size selection or for energetically less conditioned carp to be more vulnerable than their counterparts. The data cumulatively suggest that fine-scale behaviours after encountering a bait (e.g., frequency of bait intake, or degree of spitting baited hooks following ingestion) are ultimately decisive for determining vulnerability to angling in both species. We therefore conclude that encountering a stationary bait in angling for benthivorous cyprinids is a necessary, but insufficient condition for determining the likelihood of capture of an individual fish. Hence, fishing-induced selection on encounter-based behaviours in recreational angling for benthivorous fish in the wild appears unlikely.
The file 'carp positions' contains the telemetry data for all carp recorded by a high resolution whole lake acoustic telemetry system from tags with a burst rate of 5 seconds. The file includes the time stamps of each position, the UTM x and y coordinates for each position, the fish depth and temperature from the sensor in the transmitter, lake depth at the carp's position, and macrophyte height at the carp's position
The file 'tench positions' contains the telemetry data for all tench recorded by a high resolution whole lake acoustic telemetry system from tags with a burst rate of 35 seconds. The file includes the time stamps of each position, the UTM x and y coordinates for each position, the fish depth and temperature from the sensor in the transmitter, lake depth at the carp's position, and macrophyte height at the carp's position
The "tench metadata" file contains size, waterbody source, date of tagging/release and surgery details for each tagged tench used in the experiment.
carp meta data
The "carp metadata" file contains size, fat meter readings (three per side), date of tagging/release and surgery details for each tagged tench used in the experiment.
telemetry fish capture data
the "telemetry fish capture data" file contains information about all telemetry fish that were captured during the angling phase of the experiment. The file includes size at capture, location of capture, time of capture, the angler who captured the fish and the bait the fish was captured with.
Feeding Site GPS Recordings
the "Feeding Site GPS Recordings" file contains the GPS coordinates (UTM) of the eight baited feeding sites used throughout the experiment and the date that the coordinates were taken.
Feeding Times Amounts and Sites
The "Feeding Times Amounts and Sites" file contains details about how the feeding sites were fed. It contains information about the time and date of feeding, the food amount, the type of food (corn or boilie) and the site ID.
Fishing Catch All Fish
The "Fishing Catch All Fish" file contains information about all catches at all fishing sites - including carp and tench. The file includes the angler, the site, the species captured, whether the fish was landed or lost, the total length of the fish (mm), the the bait and rod used and the number of pieces of bait.
The file "Fishing Effort" contains data about the fishing effort during the angling phase of the experiment. The file contains the site that was fished, the beginning time and the end time of a stretch of angling, the rod used and the bait used.