scholarly journals Reproductive behavior drives female space use in a sedentary Neotropical frog

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e8920 ◽  
Author(s):  
Marie-Therese Fischer ◽  
Max Ringler ◽  
Eva Ringler ◽  
Andrius Pašukonis
Keyword(s):  
Activity Patterns ◽  
Space Use ◽  
Scale Space ◽  
Spatial Behavior ◽  
Home Ranges ◽  
Fine Scale ◽  
Behavioral Repertoire ◽  
Allobates Femoralis ◽  
And Behavior ◽  
Female Space

Longer-range movements of anuran amphibians such as mass migrations and habitat invasion have received a lot of attention, but fine-scale spatial behavior remains largely understudied. This gap is especially striking for species that show long-term site fidelity and display their whole behavioral repertoire in a small area. Studying fine-scale movement with conventional capture-mark-recapture techniques is difficult in inconspicuous amphibians: individuals are hard to find, repeated captures might affect their behavior and the number of data points is too low to allow a detailed interpretation of individual space use and time budgeting. In this study, we overcame these limitations by equipping females of the Brilliant-Thighed Poison Frog (Allobates femoralis) with a tag allowing frequent monitoring of their location and behavior. Neotropical poison frogs are well known for their complex behavior and diverse reproductive and parental care strategies. Although the ecology and behavior of the polygamous leaf-litter frog Allobates femoralis is well studied, little is known about the fine-scale space use of the non-territorial females who do not engage in acoustic and visual displays. We tracked 17 females for 6 to 17 days using a harmonic direction finder to provide the first precise analysis of female space use in this species. Females moved on average 1 m per hour and the fastest movement, over 20 m per hour, was related to a subsequent mating event. Traveled distances and activity patterns on days of courtship and mating differed considerably from days without reproduction. Frogs moved more on days with lower temperature and more precipitation, but mating seemed to be the main trigger for female movement. We observed 21 courtships of 12 tagged females. For seven females, we observed two consecutive mating events. Estimated home ranges after 14 days varied considerably between individuals and courtship and mating associated space use made up for ∼30% of the home range. Allobates femoralis females spent large parts of their time in one to three small centers of use. Females did not adjust their time or space use to the density of males in their surroundings and did not show wide-ranging exploratory behavior. Our study demonstrates how tracking combined with detailed behavioral observations can reveal the patterns and drivers of fine-scale spatial behavior in sedentary species.

scholarly journals Tracking native small mammals to measure fine-scale space use in grazed and restored dry woodlands

2020 ◽  
Vol 24 ◽  
pp. e01348
Author(s):  
Florencia Spirito ◽  
Mary Rowland ◽  
Michael Wisdom ◽  
Solana Tabeni
Keyword(s):  
Small Mammals ◽  
Space Use ◽  
Scale Space ◽  
Fine Scale

scholarly journals More Than Just a Spawning Location: Examining Fine Scale Space Use of Two Estuarine Fish Species at a Spawning Aggregation Site

2017 ◽  
Vol 4 ◽  
Author(s):  
Ross E. Boucek ◽  
Erin Leone ◽  
Joel Bickford ◽  
Sarah Walters-Burnsed ◽  
Susan Lowerre-Barbieri
Keyword(s):  
Fish Species ◽  
Space Use ◽  
Scale Space ◽  
Estuarine Fish ◽  
Fine Scale ◽  
Spawning Aggregation ◽  
Aggregation Site

scholarly journals Spatial dynamics and activity patterns of the fosa Cryptoprocta ferox in Ankarafantsika National Park, Madagascar: carnivores navigating a human-influenced landscape

Oryx ◽  
2020 ◽  
Vol 54 (6) ◽  
pp. 837-846
Author(s):  
Eileen Wyza ◽  
Luke Dollar ◽  
Leon Pierrot Rahajanirina ◽  
Viorel Popescu ◽  
Nancy J. Stevens
Keyword(s):  
National Park ◽  
Activity Patterns ◽  
Spatial Dynamics ◽  
Space Use ◽  
Home Range Size ◽  
Home Ranges ◽  
Gps Collars ◽  
Use Patterns ◽  
Cryptoprocta Ferox ◽  
Human Habitation

AbstractThe Vulnerable fosa Cryptoprocta ferox is the largest native carnivore in Madagascar, fulfilling a unique ecological niche in the island's remaining forests. Negative interactions with humans threaten the long-term viability of most remaining fosa populations across Madagascar. Threats to the fosa include habitat loss and persecution by humans resulting from perceived predation on domestic animals. We used GPS collars to record space use and activity patterns of five fosas in Ankarafantsika National Park, Madagascar, during the dry seasons of 2016 and 2017. The results, with up to 2,110 recorded locations per individual, indicated fosas’ home ranges and movements were not limited to the forest, and all collared individuals used networks of habitat patches and corridors to navigate deforested areas. The fosas studied in Ankarafantsika National Park had significantly larger home ranges than those reported in previous studies in other protected areas. They were rarely found within village boundaries and appeared to avoid areas of human habitation, suggesting that during the study period livestock was not a significant component of the fosas’ diet in this Park. Our results suggest that fosas have some flexibility that enables them to adapt to living near deforested and human-dominated areas by altering their space-use patterns, but they are compensating by increasing their home range size.

Optimizing control programmes by integrating data from fine-scale space use by introduced predators

2016 ◽  
Vol 19 (1) ◽  
pp. 209-221 ◽  
Author(s):  
Mariano R. Recio ◽  
Richard F. Maloney ◽  
Renaud Mathieu ◽  
Emilio Virgós ◽  
Antoni B. Moore ◽  
...  
Keyword(s):  
Space Use ◽  
Scale Space ◽  
Fine Scale ◽  
Introduced Predators ◽  
Control Programmes ◽  
Optimizing Control

Testing an autonomous acoustic telemetry positioning system for fine-scale space use in marine animals

2013 ◽  
Vol 448 ◽  
pp. 46-56 ◽  
Author(s):  
Zy Biesinger ◽  
Benjamin M. Bolker ◽  
Douglas Marcinek ◽  
Thomas M. Grothues ◽  
Joseph A. Dobarro ◽  
...  
Keyword(s):  
Acoustic Telemetry ◽  
Space Use ◽  
Scale Space ◽  
Positioning System ◽  
Fine Scale ◽  
Marine Animals

scholarly journals Seasonal Variation in Space Use and Territoriality in an Invasive Large Mammal (Sus Scrofa)

2021 ◽  
Author(s):  
Peter E. Schlichting ◽  
Raoul K. Boughton ◽  
Wes Anderson ◽  
Bethany Wight ◽  
Kurt C. VerCauteren ◽  
...  
Keyword(s):  
Sus Scrofa ◽  
Space Use ◽  
Spatial Behavior ◽  
Home Ranges ◽  
Large Mammal ◽  
Wild Pigs ◽  
Management Actions ◽  
Core Areas ◽  
Dry Seasons ◽  
Population Processes

Abstract An individual’s spatial behavior is shaped by social and environmental factors and provides critical information about population processes to inform conservation and management actions. Heterogeneity in spatial overlap among conspecifics can be evaluated using estimates of home ranges and core areas and used to understand factors influencing space use and territoriality. To understand and test predictions about spatial behavior in an invasive large mammal, the wild pig (Sus scrofa), we examined variation in space use between sexes and seasons. We predicted that if animals were territorial that there would be a reduction in space-use overlap when comparing overlap of home ranges (HR-HR), to home ranges and core areas (HR-CA), and in-turn to core areas (CA-CA). Home ranges and core areas were estimated for 54 wild pigs at Buck Island Ranch, FL from GPS telemetry data. Overlap indices were calculated to estimate the strength (space-use overlap) and number of potential interactions within three wet seasons (June-October) and two dry seasons (December-April). Across all seasons, males exhibited larger home ranges compared to females (M = 10.36±0.79 km² (±SE), F = 3.21±0.16 km²) and interacted with a greater number of individuals than females. Home range size and strength of interactions did not vary between wet and dry seasons. Consistent with our predictions, wild pigs appeared to exhibit territorial behavior, where strength of overlap decreased when comparing HR-HR to HR-CA and HR-CA to CA-CA. Strength of overlap varied by sex, which was lowest between females, intermediate between females and males, and greatest between males. Our framework can be used to understand patterns of space use and territoriality in populations, which has important implications in understanding population processes and how pathogens and parasites might spread within and among populations.

scholarly journals Fine-scale assessment of home ranges and activity patterns for resident black vultures (Coragyps atratus) and turkey vultures (Cathartes aura)

PLoS ONE ◽  
2017 ◽  
Vol 12 (7) ◽  
pp. e0179819 ◽  
Author(s):  
Amanda E. Holland ◽  
Michael E. Byrne ◽  
A. Lawrence Bryan ◽  
Travis L. DeVault ◽  
Olin E. Rhodes ◽  
...  
Keyword(s):  
Activity Patterns ◽  
Home Ranges ◽  
Fine Scale ◽  
Cathartes Aura ◽  
Scale Assessment ◽  
Turkey Vultures

Quantification and comparison of individual space-use strategies in foraging drift-feeding fish using fine-scale, multidimensional movement analysis

2015 ◽  
Vol 72 (11) ◽  
pp. 1760-1768 ◽  
Author(s):  
Aurélien Vivancos ◽  
Gerard P. Closs
Keyword(s):  
Salmo Trutta ◽  
Vertical Plane ◽  
Movement Analysis ◽  
Space Use ◽  
Scale Space ◽  
Visual Observation ◽  
Two Dimensions ◽  
Three Dimensions ◽  
Fine Scale ◽  
Drift Feeding

Fine-scale space-use of drift-feeding fish is underpinned by an energetic trade-off that makes spatial positioning paramount for fitness, especially in a group context. However, methodologies used to study the space-use of drift-feeding fish are mainly based on direct visual observation, and the accuracy of such an approach can be questionable. Furthermore, previous studies mainly focused on the space-use of territorial salmonids, as they are relatively easy to observe. Here, we use a digital imaging technique to manually extract the spatial position of fish and feeding events in three dimensions (3D), at a very fine spatiotemporal scale, from in situ stereo-video footages. We use a motion model to quantify individual space-use strategies in two dimensions (2D) through the horizontal plane (perpendicular to gravity) and through the vertical plane (parallel to the flow). We study territorial (brown trout, Salmo trutta) and nonterritorial (roundhead galaxiid, Galaxias anomalus) juvenile drift-feeding fish to test this methodology over a broad spectrum of drift-feeding fish space-use. Results show that the methodology used permits the reliable quantification of space-use by territorial and nonterritorial drift-feeding fish and could be used to reveal relevant insights on their respective behavioral ecologies.

scholarly journals Fine-scale movement, activity patterns and home-ranges of European lobster Homarus gammarus

2015 ◽  
Vol 536 ◽  
pp. 203-219 ◽  
Author(s):  
DJ Skerritt ◽  
PA Robertson ◽  
AC Mill ◽  
NVC Polunin ◽  
C Fitzsimmons
Keyword(s):  
Activity Patterns ◽  
Home Ranges ◽  
Fine Scale ◽  
Movement Activity ◽  
European Lobster ◽  
Homarus Gammarus

scholarly journals Fine-scale movement of juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) during aggregations in the lower Saint John River Basin, New Brunswick, Canada

2018 ◽  
Vol 75 (12) ◽  
pp. 2332-2342 ◽  
Author(s):  
Margaret M. Whitmore ◽  
Matthew K. Litvak
Keyword(s):  
River Basin ◽  
Space Use ◽  
Scale Space ◽  
Low Flow ◽  
Atlantic Sturgeon ◽  
Fine Scale ◽  
Vemco Positioning System ◽  
Directional Movement ◽  
Saint John ◽  
Acipenser Oxyrinchus

Juvenile Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) form seasonal aggregations near the salt wedge in their natal river systems. We used an array of Vemco positioning system acoustic receivers to track fine-scale movement within aggregation sites in two rivers in the Saint John River Basin. We used the t-LoCoH convex hull construction algorithm to map space use and aggregation behavior and nonmetric multidimensional scaling to test for differences among rivers, seasons, and photoperiods. Aggregation sites consisted of small core areas, where juvenile Atlantic sturgeon remained for long periods, that are adjacent to foraging grounds. This structure was largely consistent between rivers and seasons. Directional movement within aggregation sites differed between rivers. In areas of high flow velocity, directional movement was parallel to flow and largely restricted to littoral areas, whereas areas of low flow exhibited no distinct patterns in directional movement. This indicates flow may be an important driver of fine-scale distribution within aggregation sites. Studies of fine-scale space use can inform future investigations of rearing capacity, aid in the identification of critical habitat, and inform management decisions.

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