scholarly journals Acoustic telemetry reveals strong spatial preferences and mixing during successive spawning periods in a partially migratory common bream population

2021 ◽  
Vol 83 (3) ◽  
Author(s):  
Emily R. Winter ◽  
Andrew M. Hindes ◽  
Steve Lane ◽  
J. Robert Britton
Keyword(s):  
Acoustic Telemetry ◽  
Social Preferences ◽  
Fish Length ◽  
Network Analyses ◽  
Spatial Consistency ◽  
Wetland Resource ◽  
Behavioural Phenotypes ◽  
Common Bream ◽  
Spawning Periods ◽  
Passive Acoustic

AbstractPartial migration, whereby a population comprises multiple behavioural phenotypes that each have varying tendencies to migrate, is common among many animals. Determining the mechanisms by which these phenotypes are maintained is important for understanding their roles in population structure and stability. The aim here was to test for the temporal and spatial consistency of migratory phenotypes in a common bream Abramis brama (‘bream’) population, and then determine their social preferences and extent of mixing across three successive annual spawning periods. The study applied passive acoustic telemetry to track the movements of bream in the River Bure system of the Norfolk Broads, a lowland wetland comprising highly connected riverine and lacustrine habitats. Analyses revealed that individual migratory phenotype was highly consistent across the 3 years, but this was not predicted by fish sex or length at tagging. During the annual spawning periods, network analyses identified off-channel areas visited by both resident and migrant fish that, in non-spawning periods, were relatively independent in their space use. Within these sites, the co-occurrence of bream was non-random, with individuals forming more preferred associations than expected by chance. These associations were not strongly predicted by similarity in fish length, sex or behavioural phenotype, indicating that the resident and migrant phenotypes mixed during their annual spawning periods. The results suggested these different phenotypes, with spatially distinct resource use in non-spawning periods, comprised a single population, with this having important implications for the management of this wetland resource.

scholarly journals Evaluating Pacific cod migratory behavior and site fidelity in a fjord environment using acoustic telemetry

2018 ◽  
Vol 75 (11) ◽  
pp. 2084-2095 ◽  
Author(s):  
Sean A. Lewandoski ◽  
Mary Anne Bishop ◽  
Megan K. McKinzie
Keyword(s):  
Acoustic Telemetry ◽  
Site Fidelity ◽  
Markov Models ◽  
Gulf Of Alaska ◽  
Movement Behavior ◽  
Migratory Behavior ◽  
Fish Length ◽  
Pacific Cod ◽  
Gadus Macrocephalus ◽  
Passive Acoustic

Pacific cod (Gadus macrocephalus) inhabiting Prince William Sound (PWS) may constitute a localized population separate from Gulf of Alaska (GOA) populations; however, connectivity between these regions has not been previously explored. To address this knowledge gap, we investigated Pacific cod migratory behavior and site fidelity using passive acoustic telemetry techniques. Acoustic-tagged Pacific cod (n = 111) were monitored by Ocean Tracking Network acoustic arrays located at the straits and passages connecting PWS with the GOA and arrays deployed in two PWS fjords. Few Pacific cod tagged in PWS moved to the PWS–GOA boundary (1.8%), indicating that demographic connectivity with the GOA was low. Furthermore, 77% of tagged cod spent at least 90% of the time they were known to be alive within small (less than 30 km2) fjords. Cod were present at monitored fjords every month of the study, though some cod migrated away from the fjords during the summer and returned the following winter (11% in 2015 and 5% in 2016). Using continuous-time multistate Markov models, we determined that movement behavior was related to fish length. Larger fish tended to emigrate from monitored fjords more often and undergo longer duration migrations.

Intra-specific variation in movement and habitat connectivity of a mobile predator revealed by acoustic telemetry and network analyses

2021 ◽  
Vol 168 (6) ◽  
Author(s):  
Mario Espinoza ◽  
Elodie J. I. Lédée ◽  
Amy F. Smoothey ◽  
Michelle R. Heupel ◽  
Victor M. Peddemors ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Habitat Connectivity ◽  
Network Analyses ◽  
Specific Variation

scholarly journals Stingray Habitat Use Is Dynamically Influenced by Temperature and Tides

2022 ◽  
Vol 8 ◽  
Author(s):  
Chantel Elston ◽  
Paul D. Cowley ◽  
Rainer G. von Brandis ◽  
James Lea
Keyword(s):  
Habitat Use ◽  
Acoustic Telemetry ◽  
Monsoon Season ◽  
Abiotic Factors ◽  
Environmental Drivers ◽  
Shallow Waters ◽  
Shallow Marine ◽  
Tidal Cycles ◽  
Management Plans ◽  
Passive Acoustic

Abiotic factors often have a large influence on the habitat use of animals in shallow marine environments. Specifically, tides may alter the physical and biological characteristics of an ecosystem while changes in temperature can cause ectothermic species to behaviorally thermoregulate. Understanding the contextual and relative influences of these abiotic factors is important in prioritizing management plans, particularly for vulnerable faunal groups like stingrays. Passive acoustic telemetry was used to track the movements of 60 stingrays at a remote and environmentally heterogeneous atoll in Seychelles. This was to determine if habitat use varied over daily, diel and tidal cycles and to investigate the environmental drivers behind these potential temporal patterns. Individuals were detected in the atoll year-round, but the extent of their movement and use of multiple habitats increased in the warmer NW-monsoon season. Habitat use varied over the diel cycle, but was inconsistent between individuals. Temperature was also found to influence stingray movements, with individuals preferring the deeper and more thermally stable lagoon habitat when extreme (hot or cold) temperature events were observed on the flats. Habitat use also varied over the tidal cycle with stingrays spending a higher proportion of time in the lagoon during the lowest tides, when movement on the flats were constrained due to shallow waters. The interplay of tides and temperature, and how these varied across diel and daily scales, dynamically influenced stingray habitat use consistently between three species in an offshore atoll.

Muskellunge Management: Fifty Years of Cooperation Among Anglers, Scientists, and Fisheries Biologists

2017 ◽  
Keyword(s):  
Growth Models ◽  
Adult Population ◽  
Open Water ◽  
Maximum Size ◽  
Population Characteristics ◽  
Residual Effects ◽  
Fish Length ◽  
Frequency Distributions ◽  
Minnesota Lakes ◽  
Spawning Periods

<em>Abstract</em>.—A population assessment of Muskellunge <em>Esox masquinongy </em>in two connected north-central Minnesota lakes allowed evaluation of angler data when assessing various population metrics, including the residual effects of historical stocking efforts, as a nonlocal strain had been introduced into the native population during the 1970s. In 2012, the Minnesota Department of Natural Resources sampled and marked Muskellunge using trap nets during the prespawn and spawning periods and electrofishing during the postspawn period, while anglers collected data from fish caught during the 2012 open-water season. Anglers released all fish after collecting a scale for genetic analysis. Microsatellite DNA genotypes were used to differentiate individuals, thus identifying recaptures, and to estimate ancestry derived from the stocked strain. Anglers reported catching 16% of individuals marked by biologists. Of Muskellunge reported by anglers, 78% were from the lake where they were initially captured while 22% were reported in the lake opposite their initial capture. Postspawn movements suggested that more individuals migrated from the lake characterized as having preferred spawning and nursery habitat to the lake characterized as having preferred summer habitat and prey. The age- and length-frequency distributions of fish captured by anglers and trap nets were similar, while electrofishing sampled younger and smaller fish, likely because it occurred postspawn when many adults had moved off shore. The best estimate of adult population size was produced by a model incorporating fish length as a covariate. Density was estimated at 0.70 adults per ha or 1.92 adults per littoral ha. Higher percentages of nonlocal ancestry were associated with smaller maximum size potential (<em>L<sub></em>∞</sub> ) in von Bertalanffy growth models. Our study described key population characteristics for a Muskellunge population while demonstrating that anglers could reliably collect several specific types of data that supplement data collected by management agencies.

Seasonal home range shifts of the Siberian taimen (Hucho taimenPallas 1773): Evidence from passive acoustic telemetry in the Onon River and Balj tributary (Amur River basin, Mongolia)

2016 ◽  
Vol 101 (5-6) ◽  
pp. 147-159 ◽  
Author(s):  
Andrew Kaus ◽  
Olaf Büttner ◽  
Michael Schäffer ◽  
Gankhuyag Balbar ◽  
Purevdorj Surenkhorloo ◽  
...  
Keyword(s):  
Home Range ◽  
River Basin ◽  
Acoustic Telemetry ◽  
Range Shifts ◽  
Amur River Basin ◽  
Amur River ◽  
Passive Acoustic

scholarly journals Potential detection of illegal fishing by passive acoustic telemetry

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
David M. Tickler ◽  
Aaron B. Carlisle ◽  
Taylor K. Chapple ◽  
David J. Curnick ◽  
Jonathan J. Dale ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Illegal Fishing ◽  
Passive Acoustic

Short- and long-term movement patterns in the freshwater whipray (Himantura dalyensis) determined by the signal processing of passive acoustic telemetry data

2012 ◽  
Vol 63 (4) ◽  
pp. 341 ◽  
Author(s):  
Hamish A. Campbell ◽  
Matthew Hewitt ◽  
Matthew E. Watts ◽  
Stirling Peverell ◽  
Craig E. Franklin
Keyword(s):  
Signal Processing ◽  
Acoustic Telemetry ◽  
Movement Patterns ◽  
Wet Season ◽  
Aquatic Animals ◽  
Location Data ◽  
Linear Movement ◽  
Passive Acoustic ◽  
Free Ranging ◽  
Periodic Components

Patterns of movement in aquatic animals reflect ecologically important behaviours. Cyclical changes in the abiotic environment influence these movements, but when multiple processes occur simultaneously, identifying which is responsible for the observed movement can be complex. Here we used acoustic telemetry and signal processing to define the abiotic processes responsible for movement patterns in freshwater whiprays (Himantura dalyensis). Acoustic transmitters were implanted into the whiprays and their movements detected over 12 months by an array of passive acoustic receivers, deployed throughout 64 km of the Wenlock River, Qld, Australia. The time of an individual’s arrival and departure from each receiver detection field was used to estimate whipray location continuously throughout the study. This created a linear-movement-waveform for each whipray and signal processing revealed periodic components within the waveform. Correlation of movement periodograms with those from abiotic processes categorically illustrated that the diel cycle dominated the pattern of whipray movement during the wet season, whereas tidal and lunar cycles dominated during the dry season. The study methodology represents a valuable tool for objectively defining the relationship between abiotic processes and the movement patterns of free-ranging aquatic animals and is particularly expedient when periods of no detection exist within the animal location data.

Sign in / Sign up

Export Citation Format

Share Document