scholarly journals Site fidelity and movement of Chelonoidis carbonaria (Spix, 1824) (Testudinidae) in cocoa plantations in southeastern Brazil

2014 ◽  
Vol 74 (3 suppl 1) ◽  
pp. S135-S141
Author(s):  
JF Borini ◽  
BB Petrucci ◽  
W Krohling ◽  
JL Rossi Júnior ◽  
MRD Santos ◽  
...  
Keyword(s):  
Home Range ◽  
Site Fidelity ◽  
Radio Telemetry ◽  
Movement Patterns ◽  
Release Site ◽  
Southeastern Brazil ◽  
Natural Conditions ◽  
Behavioural Analysis ◽  
Forest Remnants ◽  
Radio Transmitters

Red-footed Tortoises (Chelonoidis carbonariaSpix, 1824) raised as pets and voluntarily handed over to environmental officers by their owners or apprehended by officers represent a large contingent of animals that overfill triage centres in Brazil. There is no consensus on the fate of these animals, and their numbers continue growing. In this study, we evaluated the movement patterns of C. carbonaria originating from triage centres in areas of cocoa plantations and forest remnants to define their home range and dispersion. After 120 days of quarantine and acclimatisation, eight C. carbonaria adults were released and monitored via radio telemetry for 10 months. The radio transmitters of two individuals presented problems, and consequently, it was not possible to track these individuals. Five individuals remained in an area of 7.75 ha 10 months after release, avoiding contact with humans after the first three months. The greatest problems were the proximity of individuals to inhabited areas in the first three months after release, the death of two individuals, and the escape of one individual. After the experiment, the animals were sent back to the triage centre. Our results suggest that a proportion of the animals in the triage centres are able to survive in natural conditions. Considering their survival and fidelity to the release site, the translocation of animals described herein should be considered partially successful. However, if this measure is adopted, it must be preceded by studies of the animals' origins and by a rigorous genetic, sanitary and behavioural analysis of each individual.

scholarly journals Movements and use of space by Mangrove Cuckoos (Coccyzus minor) in Florida, USA

PeerJ ◽  
2017 ◽  
Vol 5 ◽  
pp. e3534
Author(s):  
John David Lloyd
Keyword(s):  
Home Range ◽  
Mangrove Forest ◽  
Site Fidelity ◽  
Radio Telemetry ◽  
The Body ◽  
Home Ranges ◽  
Southwest Florida ◽  
Radio Transmitters ◽  
History Of ◽  
Initial Description

I used radio-telemetry to track the movements of Mangrove Cuckoos (Coccyzus minor) captured in southwest Florida. Relatively little is known about the natural history of Mangrove Cuckoos, and my goal was to provide an initial description of how individuals use space, with a focus on the size and placement of home ranges. I captured and affixed VHF radio-transmitters to 32 individuals between 2012 and 2015, and obtained a sufficient number of relocations from 16 of them to estimate home-range boundaries and describe patterns of movement. Home-range area varied widely among individuals, but in general was roughly four times larger than expected based on the body size of Mangrove Cuckoos. The median core area (50% isopleth) of a home range was 42 ha (range: 9–91 ha), and the median overall home range (90% isopleth) was 128 ha (range: 28–319 ha). The median distance between estimated locations recorded on subsequent days was 298 m (95% CI [187 m–409 m]), but variation within and among individuals was substantial, and it was not uncommon to relocate individuals >1 km from their location on the previous day. Site fidelity by individual birds was low; although Mangrove Cuckoos were present year-round within the study area, I did not observe any individuals that remained on a single home range throughout the year. Although individual birds showed no evidence of avoiding anthropogenic edges, they did not incorporate developed areas into their daily movements and home ranges consisted almost entirely of mangrove forest. The persistence of the species in the study area depended on a network of conserved lands–mostly public, but some privately conserved land as well–because large patches of mangrove forest did not occur on tracts left unprotected from development.

scholarly journals Movements and use of space by Mangrove Cuckoos (Coccyzus minor) in Florida, USA

2017 ◽  
Author(s):  
John D Lloyd
Keyword(s):  
Home Range ◽  
Mangrove Forest ◽  
Site Fidelity ◽  
Radio Telemetry ◽  
The Body ◽  
Home Ranges ◽  
Southwest Florida ◽  
Radio Transmitters ◽  
History Of ◽  
Initial Description

I used radio-telemetry to track the movements of Mangrove Cuckoos (Coccyzus minor) captured in southwest Florida. Relatively little is known about the natural history of Mangrove Cuckoos, and my goal was to provide an initial description of how individuals use space, with a focus on the size and placement of home ranges. I captured and affixed VHF radio-transmitters to 32 individuals between 2012 and 2015, and obtained a sufficient number of relocations from 16 of them to estimate home-range boundaries and describe patterns of movement. Home-range area varied widely among individuals, but in general, was roughly four times larger than expected based on the body size of Mangrove Cuckoos. The median core area (50% isopleth) of a home range was 42 ha (range: 9 – 91 ha), and the median overall home range (90% isopleth) was 128 ha (range: 28 – 319 ha). The median distance between estimated locations recorded on subsequent days was 298 m (95% CI = 187 m – 409 m), but variation within and among individuals was substantial, and it was not uncommon to relocate individuals >1 km from their location on the previous day. Site fidelity by individual birds was low; although Mangrove Cuckoos were present year-round within the study area, I did not observe any individuals that remained on a single home range throughout the year. Although individual birds showed no evidence of avoiding anthropogenic edges, they did not incorporate developed areas into their daily movements and home ranges consisted almost entirely of mangrove forest. The persistence of the species in the study area depended on a network of conserved lands – mostly public, but some privately conserved land as well – because large patches of mangrove forest did not occur on tracts left unprotected from development.

scholarly journals Movements and use of space by Mangrove Cuckoos (Coccyzus minor) in Florida, USA

2017 ◽  
Author(s):  
John D Lloyd
Keyword(s):  
Home Range ◽  
Mangrove Forest ◽  
Site Fidelity ◽  
Radio Telemetry ◽  
The Body ◽  
Home Ranges ◽  
Southwest Florida ◽  
Radio Transmitters ◽  
History Of ◽  
Initial Description

I used radio-telemetry to track the movements of Mangrove Cuckoos (Coccyzus minor) captured in southwest Florida. Relatively little is known about the natural history of Mangrove Cuckoos, and my goal was to provide an initial description of how individuals use space, with a focus on the size and placement of home ranges. I captured and affixed VHF radio-transmitters to 32 individuals between 2012 and 2015, and obtained a sufficient number of relocations from 16 of them to estimate home-range boundaries and describe patterns of movement. Home-range area varied widely among individuals, but in general, was roughly four times larger than expected based on the body size of Mangrove Cuckoos. The median core area (50% isopleth) of a home range was 42 ha (range: 9 – 91 ha), and the median overall home range (90% isopleth) was 128 ha (range: 28 – 319 ha). The median distance between estimated locations recorded on subsequent days was 298 m (95% CI = 187 m – 409 m), but variation within and among individuals was substantial, and it was not uncommon to relocate individuals >1 km from their location on the previous day. Site fidelity by individual birds was low; although Mangrove Cuckoos were present year-round within the study area, I did not observe any individuals that remained on a single home range throughout the year. Although individual birds showed no evidence of avoiding anthropogenic edges, they did not incorporate developed areas into their daily movements and home ranges consisted almost entirely of mangrove forest. The persistence of the species in the study area depended on a network of conserved lands – mostly public, but some privately conserved land as well – because large patches of mangrove forest did not occur on tracts left unprotected from development.

scholarly journals Movement patterns and home range of wild and re-stocked Arapaima gigas (Schinz, 1822) monitored by radio-telemetry in Lake Imiria, Peru

2015 ◽  
Vol 31 ◽  
pp. 10-18 ◽  
Author(s):  
J. Núñez-Rodríguez ◽  
F. Duponchelle ◽  
M. Cotrina-Doria ◽  
J.-F. Renno ◽  
C. Chavez-Veintimilla ◽  
...  
Keyword(s):  
Home Range ◽  
Radio Telemetry ◽  
Movement Patterns ◽  
Arapaima Gigas

scholarly journals Movement patterns and home range in Diplomystes camposensis (Siluriformes: Diplomystidae), an endemic and threatened species from Chile

2018 ◽  
Vol 16 (1) ◽  
Author(s):  
Alejandra Oyanedel ◽  
Evelyn Habit ◽  
Mark C. Belk ◽  
Katherin Solis-Lufí ◽  
Nicole Colin ◽  
...  
Keyword(s):  
Home Range ◽  
Radio Telemetry ◽  
High Mobility ◽  
Movement Patterns ◽  
Large River ◽  
San Pedro River ◽  
Portable Radio ◽  
Upstream Direction ◽  
Dam Building ◽  
Large Home Range

ABSTRACT We document movement patterns and home range of Diplomystes camposensis, an endemic and threatened freshwater catfish from Chile. We tracked the movements of seven individuals of different body size (13.5 to 19 cm SL) using portable radio telemetry equipment to investigate movement patterns in relation to day/night activity and habitat use in the San Pedro River (Valdivia Basin). Tracked movements and model-based analyses revealed that D. camposensis has a large home range and high mobility. The average home range was 0.068163 ± 0.033313 km2, and the average area of higher activity was 0.005646 ± 0.011386 km2. The mean linear home range was 387.4 m. The results also showed that movements were longer during the night, supporting nocturnal habits. Movements tended to be in an upstream direction for some individuals, although these differences were not significant when data was pooled. Large home range and movements suggest that the species may require large river areas to meet ecological demands, an aspect that could be severely affected by fragmentation. These results, along with previously published genetic data, suggest that the conservation of D. camposensis would be seriously threatened by hydromorphological alterations (e.g. lack of connectivity), such as those resulting from dam building.

Movements, space use and site fidelity of translocated and resident mule deer (Odocoileus hemionus)

2019 ◽  
Vol 46 (6) ◽  
pp. 509 ◽  
Author(s):  
David C. Smedley ◽  
Madelon van de Kerk ◽  
Brock R. McMillan ◽  
Kent R. Hersey ◽  
Jericho C. Whiting ◽  
...  
Keyword(s):  
Home Range ◽  
Site Fidelity ◽  
Mule Deer ◽  
Space Use ◽  
Odocoileus Hemionus ◽  
Home Range Size ◽  
Winter Range ◽  
Radio Transmitters ◽  
High Site ◽  
Resident Female

Abstract ContextTranslocation of wildlife has become common practice for wildlife managers charged with management of animals on increasingly modified landscapes. Mule deer (Odocoileus hemionus) is a species of great interest to the public in western North America, and individuals of this species have been translocated several times, but little has been done to document the outcomes of those translocations. AimOur objective was to evaluate the movement, space use and site fidelity of translocated female mule deer in comparison with resident female deer in Utah, USA. MethodsIn January and March 2013, 102 translocated and 50 resident female mule deer were captured and fitted with radio-transmitters. Movement distances, home range sizes and seasonal range sizes were compared, as well as site fidelity between translocated and resident deer. Key resultsMean distance moved and mean annual home range size were significantly larger for translocated than resident deer in 2013, but not in 2014. Translocated deer demonstrated high site fidelity to their release areas. In total, 75% of surviving deer returned during the fall (September–November) migration to winter range within 7km of release sites. ConclusionsOur results indicate that home range sizes and movements of translocated deer are larger than those of resident deer during the first year after release, but during the second year after release, home range sizes and movements of translocated deer are similar to those of resident deer. ImplicationsThe similar home range sizes and movements of translocated and resident deer >1 year after release, as well as the high site fidelity we observed, suggests that translocation is a strategy managers could use to establish or augment populations of mule deer on winter range.

Residency and movement patterns of yellowfin bream (Acanthopagrus australis) released at natural and artificial reef sites

2017 ◽  
Vol 68 (8) ◽  
pp. 1479 ◽  
Author(s):  
Michael Lowry ◽  
Alistair Becker ◽  
Heath Folpp ◽  
James McLeod ◽  
Matthew D. Taylor
Keyword(s):  
Site Fidelity ◽  
Artificial Reef ◽  
Movement Patterns ◽  
Release Site ◽  
Suitable Habitat ◽  
Artificial Habitat ◽  
Natural Reef ◽  
Release Location ◽  
Related Mortality

The present study investigated the long-term (>2 years) site fidelity, residency and movement patterns of Acanthopagrus australis (Sparidae) at artificial (AR) and natural reef (NR) sites. Acoustic telemetry was used to assess movement patterns of 39 fish released at NR and AR locations and other habitat types within the study area. Detection periods ranged from 1 day to a maximum of 912 days, with 36% of fish detected by the array for >1 year and a further 7% detected for >2 years. Results indicate that tagged fish tended to remain associated with the release site; however, AR fish were detected for considerably longer periods with greater numbers of fish identified as resident within the AR system. AR-released fish were also identified more frequently across the entire array, with the majority (90%) of detections between receiver stations located within the AR system. Results were affected by short detection periods (<6 days) of a relatively high proportion of fish released at the NR, possibly indicating differential rates of fishing mortality between locations. Longer range movements of >200km were also detected, but there was no obvious trend with release location. The results of the present study indicate interactions between existing and introduced artificial habitat are more complex than a ‘draw-down’ effect and provide further evidence that AR systems provide suitable habitat for a variety of species, as well as further support for the use of AR systems in fisheries enhancement initiatives. The results also have important implications for understanding the effect of AR systems and indicate that the size of the reef system may be an important factor in controlling for levels of fishing-related mortality.

Movement patterns and activity of the Brazilian snake-necked turtle Hydromedusa maximiliani (Testudines: Chelidae) in southeastern Brazil

2016 ◽  
Vol 37 (2) ◽  
pp. 215-228 ◽  
Author(s):  
Shirley Famelli ◽  
Franco L. Souza ◽  
Arthur Georges ◽  
Jaime Bertoluci
Keyword(s):  
Movement Patterns ◽  
Egg Laying ◽  
Conservation Strategies ◽  
Southeastern Brazil ◽  
Radio Tracking ◽  
Freshwater Turtles ◽  
Distance Measurements ◽  
Straight Line ◽  
Straight Line Distance ◽  
Radio Transmitters

To investigate the movement patterns and activity ofHydromedusa maximilianiin southeastern Brazil, sixteen adult freshwater turtles (eight males and eight females) were monitored with radio-transmitters from October 2009 to November 2010. An additional 22 turtles (11 males and 11 females) were monitored with thread-bobbins over a 3-day period.Hydromedusa maximilianishowed strong tendency to remain close to the river course. The distance moved each day varied from 0 to 179 m/day (radio-tracking) and 1.5 to 201 m/day (thread-bobbins). Males moved greater distances than females during the mating season (August to November), while females exhibited pronounced movements associated with egg-laying (December to February). Male and female movements did not differ significantly. Straight line distance measurements, usually obtained by radio-tracking, underestimate actual movement distances, since the nonlinearity of movements is not captured by radio-tracking as opposed to spool tracking, even when long distances are travelled. Results from this study are important for establishing conservation strategies for this vulnerable species.

Spatial ecology of the quokka (Setonix brachyurus) in the southern forests of Western Australia: implications for the maintenance, or restoration, of functional metapopulations

2020 ◽  
Vol 42 (1) ◽  
pp. 38
Author(s):  
Karlene Bain ◽  
Adrian Francis Wayne ◽  
Roberta Bencini
Keyword(s):  
Home Range ◽  
Western Australia ◽  
Riparian Vegetation ◽  
Spatial Ecology ◽  
Radio Telemetry ◽  
Movement Patterns ◽  
Home Range Size ◽  
Range Size ◽  
Habitat Patches ◽  
Preferred Habitat

We used radio-telemetry to investigate the home-range size and movement patterns of the quokka (Setonix brachyurus) in the southern forests of Western Australia to assess the ability of animals to move between increasingly segregated habitat patches and to identify implications for metapopulation function. We found that quokkas in this region have a much larger home range (71 ± 5.8 ha) and move larger distances (up to 10 km per night) than previously reported for this species in other regions. Temporal and sex variations in home-range size, overlap and movement patterns provided insights into the social structure, reproductive strategies and resource availability for the species in this part of its range. Quokkas moved up to 14 km between habitat patches, where these patches were connected by dense riparian vegetation. While riparian vegetation was used exclusively for movement between habitat patches, quokkas spent only 40% of their time in this ecotype. The current management paradigm of protecting linear riparian vegetation as habitat for quokkas is important for maintaining habitat connectivity, but is unlikely to meet broader habitat and spatial requirements. Management of preferred habitat as well as riparian corridors is necessary for the maintenance of a functional metapopulation.

Sign in / Sign up

Export Citation Format

Share Document