scholarly journals Effects of seed-rich habitat provision on territory density, home range and breeding performance of European Turtle Doves Streptopelia turtur

2020 ◽  
pp. 1-20
Author(s):  
JENNY C. DUNN ◽  
ANTONY J. MORRIS ◽  
PHILIP V. GRICE ◽  
WILL J. PEACH
Keyword(s):  
Reproductive Output ◽  
Food Limitation ◽  
Home Ranges ◽  
Breeding Performance ◽  
Ranging Behaviour ◽  
Local Abundance ◽  
Turtle Dove ◽  
Human Habitation ◽  
Territory Density ◽  
Streptopelia Turtur

Summary Conservation measures providing food-rich habitats through agri-environment schemes (AES) have the potential to affect the demography and local abundance of species limited by food availability. The European Turtle Dove Streptopelia turtur is one of Europe’s fastest declining birds, with breeding season dietary changes coincident with a reduction in reproductive output suggesting food limitation during breeding. In this study we provided seed-rich habitats at six intervention sites over a 4-year period and tested for impacts of the intervention on breeding success, ranging behaviour and the local abundance of territorial turtle doves. Nesting success and chick biometrics were unrelated to the local availability of seed-rich habitat or to the proximity of intervention plots. Nestling weight was higher close to human habitation consistent with an influence of anthropogenic supplementary food provision. Small home ranges were associated with a high proportion of non-farmed habitats, while large home ranges were more likely to contain seed-rich habitat suggesting that breeding doves were willing to travel further to utilize such habitat where available. Extensively managed grassland and intervention plot fields were selected by foraging turtle doves. A slower temporal decline in the abundance of breeding males on intervention sites probably reflects enhanced habitat suitability during territory settlement. Refining techniques to deliver sources of sown, natural, and supplementary seed that are plentiful, accessible, and parasite-free is likely to be crucial for the conservation of turtle doves.

THE FEEDING HABITS OF THE WOODPIGEON COLUMBA PALUMBUS, STOCK DOVE C. OENAS AND TURTLE DOVE STREPTOPELIA TURTUR

Ibis ◽  
2008 ◽  
Vol 106 (2) ◽  
pp. 174-188 ◽  
Author(s):  
R. K. Murton ◽  
N. J. Westwood ◽  
A. J. Isaacson
Keyword(s):  
Feeding Habits ◽  
Turtle Dove ◽  
Streptopelia Turtur

scholarly journals Experimentally provided conspecific cues boost bird territory density but not breeding performance

2016 ◽  
Vol 28 (1) ◽  
pp. 174-185 ◽  
Author(s):  
Alex Grendelmeier ◽  
Raphaël Arlettaz ◽  
Juanita Olano-Marin ◽  
Gilberto Pasinelli
Keyword(s):  
Breeding Performance ◽  
Territory Density ◽  
Conspecific Cues

Distribution of the European turtle dove (Streptopelia turtur) at the edge of the South-Western Palaearctic: transboundary differences and conservation prospects

2020 ◽  
Vol 66 (5) ◽  
Author(s):  
José Luis Tellería ◽  
Roberto Carbonell ◽  
Guillermo Fandos ◽  
Elena Tena ◽  
Alejandro Onrubia ◽  
...  
Keyword(s):  
The South ◽  
Turtle Dove ◽  
Western Palaearctic ◽  
Streptopelia Turtur

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.

scholarly journals Comparison of Nesting Features and Breeding Success of Turtle Dove Streptopelia turtur between Orchards and Riparian Habitats

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Ismail Mansouri ◽  
Wafae Squalli ◽  
Abdelbari El Agy ◽  
Abderahim El-Hassani ◽  
Lahcen El Ghadraoui ◽  
...  
Keyword(s):  
Breeding Success ◽  
Riparian Vegetation ◽  
Tree Height ◽  
Breeding Ecology ◽  
Apple Orchards ◽  
Riparian Trees ◽  
Nest Placement ◽  
Turtle Dove ◽  
The Difference ◽  
Streptopelia Turtur

The European turtle dove Streptopelia turtur breeds in both farmlands and woodlands, and it is important to explore the difference in breeding ecology of this threatened game in these two ecosystem types. This study, carried out during four years (2015–2018), compares nesting features of this species and its breeding success between apple orchards and riparian vegetation in Midelt Province, Morocco. The main result revealed that the nest placement, including nesting-tree height and nest height, is similar between orchards and riparian trees. However, the nest dimensions (big and small diameters) were larger in orchards. Correlations were variable among nest placement parameters and dimensions. On the contrary, in four breeding seasons, where 566 nests were monitored (467 in orchards and 99 in riparian sites), the average breeding success was different (57% of chicks in apple farms and 53% in riparian vegetation). Moreover, in apple orchards, clutches’ failure is due to both predation (18.89% of eggs and 10.54% of chicks) and temperature lowering (5.03% of unhatched eggs and 5.49% of dead chicks), while in riparian vegetation, the loss is due to nest desertion (21.33% of clutches) and mostly predation (33.16% of clutches).

scholarly journals Assessing rates of parasite coinfection and spatiotemporal strain variation via metabarcoding: insights for the conservation of European Turtle Doves Streptopelia turtur

2022 ◽  
Author(s):  
Rebecca Thomas ◽  
Jenny Dunn ◽  
Deborah Dawson ◽  
Helen Hipperson ◽  
Gavin Horsburgh ◽  
...  
Keyword(s):  
Immune Modulation ◽  
High Throughput Sequencing ◽  
Natural Populations ◽  
Bird Species ◽  
Protozoan Parasite ◽  
Control Measures ◽  
Strain Variation ◽  
Iron Hydrogenase ◽  
Turtle Dove ◽  
Streptopelia Turtur

Understanding the frequency, spatiotemporal dynamics and impacts of parasite coinfections is fundamental to developing control measures and predicting disease impacts. The European turtle dove (Streptopelia turtur) is one of Europe’s most threatened bird species. High prevalence of infection by the protozoan parasite Trichomonas gallinae has previously been identified, but the role of this and other coinfecting parasites in turtle dove declines remains unclear. Using a high-throughput sequencing approach, we identified seven strains of T. gallinae, including two novel strains, from ITS1/5.8S/ITS2 ribosomal sequences in turtle doves on breeding and wintering grounds, with further intra-strain variation and four novel sub-types revealed by the iron-hydrogenase gene. High spatiotemporal turnover was observed in T. gallinae strain composition, and infection was prevalent in all populations (89–100%). Coinfection by multiple Trichomonas strains was rarer than expected (1% observed compared to 38.6% expected), suggesting either within-host competition, or high mortality of coinfected individuals. In contrast, coinfection by multiple haemosporidians was common (43%), as was coinfection by haemosporidians and T. gallinae (90%), with positive associations between strains of T. gallinae and Leucocytozoon suggesting a mechanism such as parasite-induced immune modulation. We found no evidence for negative associations between coinfections and host body condition. We suggest that longitudinal studies involving the recapture and investigation of infection status of individuals over their lifespan are crucial to understand the epidemiology of coinfections in natural populations.

scholarly journals Local conspecific density does not influence reproductive output in a secondary cavity-nesting songbird

The Auk ◽  
2020 ◽  
Vol 137 (2) ◽  
Author(s):  
Jeffrey P Hoover ◽  
Nicole M Davros ◽  
Wendy M Schelsky ◽  
Jeffrey D Brawn
Keyword(s):  
Body Condition ◽  
Population Biology ◽  
Life Histories ◽  
Reproductive Output ◽  
Local Density ◽  
Food Limitation ◽  
Primary Objective ◽  
Cavity Nesting ◽  
Nestling Provisioning ◽  
Local Densities

Abstract Density dependence is a conceptual cornerstone of avian population biology and, in territorial songbirds, past research has emphasized interactions among food limitation, density, and reproduction. Documenting the importance of density effects is central to understanding how selective forces shape life histories and population dynamics. During the 2008–2011 breeding seasons, we nearly doubled overall conspecific breeding densities on study sites, and manipulated nest box spacing to increase local breeding densities (defined as the number of pairs breeding within 200 m of a pair’s nest) of a secondary cavity-nesting songbird, the Prothonotary Warbler (Protonotaria citrea). Our primary objective was to test for effects of food limitation, as mediated by conspecific local densities, on measures of productivity. We monitored breeding pairs and recorded the total number of fledglings produced along with several components of reproductive output (clutch size, hatching success, nestling survival, and probability of attempting a second brood), rates of nestling provisioning, and nestling body condition prior to fledging. We predicted that if the availability of food were affected by local densities, then one or more of these parameters measuring reproduction would be affected negatively. We did not detect an effect of local density on total reproductive output or its components despite our vast range of local densities (1–27 pairs; i.e. 0.16–2.23 pairs ha–1). Further, we also did not detect differences in nestling provisioning rates and nestling body condition relative to local density. By breeding in a productive ecosystem rich in food resources, these warblers appear to avoid reduced reproductive output when breeding in high densities. Whereas density-dependent food limitation may commonly reduce reproductive output in many species, the ecological circumstances underlying when it does not occur merit further investigation and may provide new insights into what is driving territoriality and what are the primary factors affecting individual fitness.

Spatial behaviour of yellow-footed rock-wallabies, Petrogale xanthopus, changes in response to active conservation management

2011 ◽  
Vol 59 (1) ◽  
pp. 1 ◽  
Author(s):  
Matt W. Hayward ◽  
Keith Bellchambers ◽  
Kerryn Herman ◽  
Joss Bentley ◽  
Sarah Legge
Keyword(s):  
Movement Patterns ◽  
Capra Hircus ◽  
Home Ranges ◽  
Nutrient Requirements ◽  
Gps Telemetry ◽  
Winter Range ◽  
Introduced Herbivores ◽  
Ranging Behaviour ◽  
Competition For Food ◽  
The Difference

Competition for food is predicted to influence faunal movement patterns as animals have to range further to satisfy their nutrient requirements. Research between 1979 and 1984 found that yellow-footed rock-wallabies, Petrogale xanthopus, in Middle Gorge, Buckaringa Sanctuary, had home ranges (134–169 ha in winter) that were much larger than predicted, which was attributed to competing livestock and cropping. We studied the ranging behaviour of this population using GPS telemetry after the cessation of farming and following several years of fox, Vulpes vulpes, and goat, Capra hircus, control to determine whether the reduction in competition and predation pressure has affected movement patterns of this endangered species. Mean winter range size of the four GPS-collared rock-wallabies was 4.3 ha (kernel or 5.5-ha MCP), which is a much smaller area than the rock-wallabies used before farming ceased and fox and goat control was implemented. The rock-wallabies primarily used the mid- to lower slopes of the gorge country and preferred redgum creeks and gorge habitats. The rock-wallabies exhibited a crepuscular activity pattern. We hypothesise that the difference in movements has arisen because the rock-wallabies are no longer competing for resources with introduced herbivores, and are able to meet their forage requirements from a smaller area.

Insights into feral goat movement in Australia using dynamic Brownian Bridges for movement analysis

2016 ◽  
Vol 38 (4) ◽  
pp. 343 ◽  
Author(s):  
Mark R. Lethbridge
Keyword(s):  
South Australia ◽  
Movement Analysis ◽  
Management Decision ◽  
Home Ranges ◽  
Long Distance ◽  
Ranging Behaviour ◽  
Brownian Bridges ◽  
Land Systems ◽  
Long Distance Movement ◽  
Feral Goat

Movement analyses were conducted for 50 goats across southern Australia using GPS satellite collars. A radio or satellite-tracked animal used to direct culling operations is generally called a ‘Judas’ animal. Goats used as ‘Judas’ animals in control operations were compared with non-‘Judas’ goats in the states of South Australia and Victoria, respectively. Their movement in two land systems were also compared. Dynamic Brownian Bridges Movement Models were used to calculate home ranges (95% utilisation areas). Changes in movement behaviour were identified to partition sedentary behaviour from long-distance movement events, defined here as ranging. Eleven goats exhibited ranging behaviour and moved from 9 to 33 km between their home ranges. After partitioning, their home ranges varied from 1.97 to 223.8 km2. In this study in the Southern Australian Mallee regions, non-‘Judas’ goats had significantly smaller home ranges than ‘Judas’ goats. However, no significant differences were found in the ranging distances between non-‘Judas’ goats and ‘Judas’ goats. Understanding these two distinct forms of goat movement is important in the planning and budgeting of removal operations. To demonstrate this a simple goat management decision tool is used to illustrate the biases that can result in the expected hours of removal operations when the assumptions about goat movement are ill-defined.

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