Roosting and Foraging Behavior of the Queensland Tube-Nosed Bat, Nyctimene-Robinsoni (Pteropodidae) - Preliminary Radio-Tracking Observations

1989 ◽  
Vol 16 (4) ◽  
pp. 413 ◽  
Author(s):  
HJ Spencer ◽  
TH Fleming
Keyword(s):  
Small Area ◽  
Foraging Behaviour ◽  
Primary Forest ◽  
Annona Muricata ◽  
Radio Tracking ◽  
Far North ◽  
Fruit Orchard ◽  
Time Of Year ◽  
Fig Trees ◽  
Normal Food

The roosting and foraging behaviour of Nyctimene robinsoni (Chiroptera : Pteropodidae) was studied at Cape Tribulation, far north Queensland, in November and December 1987 using radio-tracking techniques. Bats under and around fruiting sourcop (Annona muricata) trees in a fruit orchard and under cluster fig trees (Ficus spp.) in abandoned pastures were captured with mist nets. Females dominated the captures in the orchard, but the sex ratio was 1 : 1 under cluster fig trees (their presumed normal food). Distances between day-roosting sites and places of capture ranged from 63 to 1012 m. During the day, bats roosted solitarily in the foliage of canopy or understorey trees, usually in primary forest, and most individuals roosted in the same small area for several consecutive days. Except for occasional visits to isolated fruiting trees, individuals foraged at night within 200m of their day roost. The high density of fruiting cluster fig trees in November and December could account for the sedentary behaviour ot this bat at this time of year.

Field Observations on the Common Striped Possum (Dactylopsila Trivirgata) in North Queensland.

1996 ◽  
Vol 23 (6) ◽  
pp. 755 ◽  
Author(s):  
KA Handasyde ◽  
RW Martin
Keyword(s):  
Body Weight ◽  
Home Range ◽  
Foraging Behaviour ◽  
Male Body ◽  
Radio Tracking ◽  
Minimum Convex Polygon ◽  
Far North ◽  
Large Trees ◽  
The Common ◽  
Primary Habitat

Habitat utilisation and foraging behaviour by the common striped possum (Dactylopsila trivirgata) was investigated by means of spotlighting and radio-tracking at Shiptons Flat, far north Queensland. Vine forest was the primary habitat of D. trivirgata; however, animals were also observed in open eucalypt (Eucalyptus tereticornis) woodland. Information collected on foraging behaviour suggests that D. trivirgata are generalist insectivores consuming some fruit and other foodstuffs, such as honey. Radio-tracking data were used to calculate the home-range areas of two subadult males. The home range of the smaller male (body weight 290 g) was 5.2 ha (by the 95% harmonic mean (HM) method) or 6.5 ha (by the minimum convex polygon (MCP) method), and that of the larger male (body weight 415 g) was 21.2 ha (95% HM) or 21.3 ha (MCP). Large trees with hollows, which are utilized for denning, appear to be an important feature of the habitat for this species. D. trivirgata exhibits a pronounced degree of sociality and may breed seasonally. Observations suggest that amethystine pythons (Morelia amethistina) may be major predators of D. trivirgata at Shiptons Flat.

The influence of roost closure on the roosting and foraging behaviour of Eptesicus fuscus (Chiroptera: Vespertilionidae)

1986 ◽  
Vol 64 (5) ◽  
pp. 1128-1133 ◽  
Author(s):  
R. Mark Brigham ◽  
M. Brock Fenton
Keyword(s):  
Reproductive Success ◽  
Direct Observation ◽  
Foraging Behaviour ◽  
Eptesicus Fuscus ◽  
Maximum Distance ◽  
Radio Tracking ◽  
Site Specific ◽  
Big Brown Bats ◽  
Specific Factors ◽  
Foraging Flight

We used radio tracking and direct observation to determine the effect of roost closure on the roosting and foraging behaviour of big brown bats (Eptesicus fuscus) in maternity colonies near Ottawa. Individuals were site loyal, but after eviction they moved short distances to new roosts where they tended to produce fewer offspring. The time spent on the first foraging flight, the maximum distance travelled, and the use of feeding areas did not change with exclusion. The results suggest that bats roost to take advantage of site-specific factors that may increase reproductive success.

scholarly journals Foraging Behaviour of Three Sympatric Babblers (Family: Timaliidae)

2020 ◽  
Vol 3 (2) ◽  
pp. a26-34
Author(s):  
JONATHON JULIANA ◽  
DENCY FLENNY GAWIN
Keyword(s):  
National Park ◽  
Foraging Behaviour ◽  
Foraging Ecology ◽  
Secondary Forest ◽  
Structural Complexity ◽  
Foraging Strategies ◽  
Dipterocarp Forest ◽  
Fruit Orchard ◽  
Disturbed Forest ◽  
Mixed Dipterocarp Forest

We investigated the foraging ecology of three species of babblers in Kampung Gumbang, Kampung Padang Pan and Dered Krian National Park, Bau. Vegetation in Kampung Gumbang include tall trees, shrubs and patches of kerangas. Dered Kerian National Park consists of mixed dipterocarp forest and limestone forest, which is surrounded by orchards and few villages. In Kampung Padang Pan, the vegetation is a mixed fruit orchard and secondary forest. Foraging data were obtained to compare foraging behaviour in three species. From 133 observations, suspended dead leaves was the most frequently used substrate by the three species. Stachyris maculate showed the most general foraging behavior, and it adopted probing strategy. Cyanoderma erythropterum and Mixnornis gularis obtained food items by gleaning. These three babblers utilize different foraging strategies and substrates, irrespective of their resemblances in other characteristics.  C. erythropterum and S. maculate forage mainly among dead and curled, twisted leaves in understory vegetation at significantly different heights. M. gularis forages on dead and living leaves and this species can be found abundantly in disturbed forest and plantation or farm habitats. All the three areas were observed never lacked falling leaves and structural complexity required as foraging substrates by those three babbler species. All three babblers occupy different foraging niches, and therefore interspecific competitions among themselves are minimized.

Field studies of a high elevation population of northern Greater glider Petauroides volans minor in the Bluff State Forest, Far North Queensland

2021 ◽  
Author(s):  
C.R. Starr ◽  
R.T. Hughes ◽  
M.S. Hemmings ◽  
J.F. Coase ◽  
M. D. Jess
Keyword(s):  
Field Studies ◽  
High Elevation ◽  
Conservation Strategies ◽  
Radio Tracking ◽  
Field Site ◽  
Local Conservation ◽  
Field Surveys ◽  
Far North ◽  
Sclerophyll Forest ◽  
Blue Gum

ABSTRACT We present the results of field surveys and a radio-tracking study of the Greater glider Petauroides volans minor in the Bluff State Forest, North Queensland. Twenty-three spotlighting transects were surveyed twice in July 2018, mean abundance of P. v. minor was 0.24 ha−1 in wet sclerophyll and 0.38 ha−1 in dry sclerophyll forest. Field observations (n= 330) were collected from nine radio-collared animals across three field sites from July to October 2019. 95% kernel home range estimates varied, ranging from 1.03–11.45 ha. Observations of denning (n=66) across 22 den trees identified that the gliders utilised between 1 and 4 dens during the study. Den trees were predominantly large Blue gum Eucalyptus tereticornis, with Gum-topped box Eucalyptus moluccana, Narrow-leafed ironbark Eucalyptus drepanophylla, Tindale’s stringybark Eucalyptus tindaliae and unidentifiable tree stags were used to lesser extent in one field site. Mean availability of suitable den trees was 2.07±1.12 per ha in Site 1 and 2, and 1.57±1.24 in Site 3. Foraging observations (n=148) were collected, Pink Bloodwood Corymbia intermedia and E. moluccana were the most commonly observed feed trees utilised by the study animals during the tracking period. This study provides baseline data for P. v. minor within high elevation habitat (950 to 1000 m) at its most northern extent. Given the widespread decline of P. volans across much of its range, these data may be used for developing local conservation strategies for the species in North Queensland.

Sex divergence in space utilisation in the steppe tortoise (Testudo horsfieldi)

2003 ◽  
Vol 81 (3) ◽  
pp. 380-387 ◽  
Author(s):  
Frédéric Lagarde ◽  
Xavier Bonnet ◽  
Brian Henen ◽  
Arnaud Legrand ◽  
Johanna Corbin ◽  
...  
Keyword(s):  
Sex Differences ◽  
Home Range ◽  
Parental Care ◽  
Small Area ◽  
Animal Species ◽  
Tracking Data ◽  
Radio Tracking ◽  
Mating Season ◽  
Active Season

In animal species without parental care, the fitness of males should increase with the number of females encountered, court, and fertilise, and the fitness of females depends strongly on the quantity and quality of resources acquired. This should translate into a marked sex differences in the patterns of space utilisation. We analysed the sex divergences in home range and movements pattern in the steppe tortoise (Testudo horsfieldi) in Uzbekistan. From the radio-tracking data of 36 individuals throughout the active season, the home range of the male steppe tortoise was estimated to be smaller than that of the female (24 vs. 57 ha), even when the analysis focused on the mating season only. During the mating season, males intensively patrolled a small area, going back and forth within their territory, thereby covering greater distances than females. The females movements were more unidirectional, resulting in large loops over a very extended home range. We proposed several nonexclusive hypothesis for such a pattern.

A comparison of the roosting and foraging behaviour of three species of African insectivorous bats (Rhinolophidae, Vespertilionidae, and Molossidae)

1986 ◽  
Vol 64 (12) ◽  
pp. 2860-2867 ◽  
Author(s):  
M. Brock Fenton ◽  
I. L. Rautenbach
Keyword(s):  
South Africa ◽  
National Park ◽  
Foraging Behaviour ◽  
Kruger National Park ◽  
Radio Tracking ◽  
Body Temperatures ◽  
Wing Morphology ◽  
Echolocation Call ◽  
Insectivorous Bats ◽  
Deciduous Woodland

We used radio tracking to study the roosting and foraging behaviour of Rhinolophus hildebrandti, Scotophilus borbonicus (=S. viridis and S. leucogaster), and Tadarida midas in the Pafuri Region of Kruger National Park, South Africa in November 1985. Although the species roosted in different locations (S. borbonicus in hollow mopane trees, R. hildebrandti in a hollow baobab tree, and T. midas in buildings), roost temperatures and the bats' body temperatures were generally similar. The S. borbonicus and T. midas flew continuously while foraging in pursuit of flying prey; the R. hildebrandti switched between continuous flight, and hunting from a perch also in pursuit of flying prey. All three species foraged for about 60 min nightly, but the T. midas ventured at least 10 km from their roosts, while for S. borbonicus and R. hildebrandti, comparable figures were 4 and 2 km, respectively. The three species showed a spectrum of wing morphology and echolocation call design features from clutter resistant (R. hildebrandti) to relatively clutter resistant (S. borbonicus) and clutter intolerant (T. midas) and the foraging areas used by the bats corresponded to these features. Rhinolophus hildebrandti foraged below the canopy in riverine forest and deciduous woodland, while S. borbonicus foraged around the canopy but not closer than 0.5 m to it, while T. midas foraged in the open well above the canopy. These differences are discussed along with variations in foraging behaviour in insectivorous bats.

The bat fauna of Lamanai, Belize: roosts and trophic roles

2001 ◽  
Vol 17 (4) ◽  
pp. 511-524 ◽  
Author(s):  
M. B. FENTON ◽  
E. BERNARD ◽  
S. BOUCHARD ◽  
L. HOLLIS ◽  
D. S. JOHNSTON ◽  
...  
Keyword(s):  
South Africa ◽  
National Park ◽  
French Guiana ◽  
Foraging Behaviour ◽  
Kruger National Park ◽  
Radio Tracking ◽  
Carollia Perspicillata ◽  
Flower Visitor ◽  
Saccopteryx Bilineata ◽  
Mist Net

Thirty-six of the 70 species of bats known from Belize were recorded from the area around Lamanai, Orange Walk County: two in roosts and 34 in about 680 mist net hours that produced 560 captures. Day roosts used by 35 of the species were located using radio-tracking (Sturnira lilium, Platyrrhinus helleri, Centurio senex and Bauerus dubiaquercus) or general searching for roosts (Rhynchonycteris naso, Saccopteryx bilineata, Saccopteryx leptura, Dicli durus albus, Mimon bennettii, Micronycteris schmidtorum, Carollia brevicauda, Carollia perspicillata and Eptesicus furinalis). Data on the day roosts of 23 other species were determined from the literature. Most species reported from Lamanai (19) roosted in hollows, while others used foliage (6), tents (3), sheltered sites (2), crevices (2), open sites (1), and a few species used more than one type of day roost (hollows and crevices (1); hollows and foliage (1); hollows, foliage and tents (1)). The fauna consisted of 13 aerial foragers, 9 gleaners, 11 fruit/leaf eaters, one trawler, one flower-visitor and one blood-feeder. In day roost use and foraging behaviour, the Lamanai fauna did not differ significantly from that of Paracou, French Guiana, but both these locations differed from the bat fauna of Kruger National Park, South Africa, in foraging behaviour.

Foraging Behaviour of the Australian Ghost Bat, Macroderma gigas (Microchiroptera: Megadermatidae)

1985 ◽  
Vol 33 (5) ◽  
pp. 705 ◽  
Author(s):  
CR Tidemann ◽  
DM Priddel ◽  
JE Nelson ◽  
JD Pettigrew
Keyword(s):  
Direct Observation ◽  
Foraging Behaviour ◽  
Radio Tracking ◽  
Hunting Behaviour ◽  
Flying Insects ◽  
Mean Size ◽  
The Mean ◽  
Vantage Points

The foraging behaviour of Macroderma gigas was investigated in the field by radio-tracking of tagged individuals and by direct observation of feeding bats in May 1983. Foraging areas were centred, on average, 1.9 km from the day roost. The mean size of foraging areas was 61 ha and tagged bats generally returned to the same areas each night. Hunting behaviour of bats within foraging areas consisted of observation at vantage points, with brief sallies to capture prey, mostly insects on the ground, although hawking of flying insects was also observed. Vantage points were changed about every 15 min during foraging periods. The mean distance between them was 360 m. Foraging areas were not exclusive, there was overlap between the ranges of several tagged individuals, and in one case an area was used by 20 bats.

scholarly journals 899Stepping up: identifying small-area variation in diabetes-related lower limb amputations

2021 ◽  
Vol 50 (Supplement_1) ◽  
Author(s):  
Doctor Susanna Cramb ◽  
Doctor Peter Lazzarini ◽  
Adrian Barnett ◽  
Mark Daniel
Keyword(s):  
Ankle Joint ◽  
Lower Limb ◽  
Small Area ◽  
Major Amputation ◽  
Bayesian Hierarchical ◽  
Far North ◽  
Small Area Variation ◽  
High Area ◽  
Area Variation ◽  
Foot Disease

Abstract Background Diabetes-related foot disease is the leading cause of lower limb amputations in Queensland. Amputations can be either minor (below the ankle joint) or major (above the ankle joint). Minor amputations may be performed to prevent major amputations prophylactically, but how these forms of amputations interrelate, and where their interrelationships are weakest and strongest, is unknown. Knowledge of small-area variation in interrelations between minor and major amputations is relevant to prevention and improved management of foot disease. Methods Data on lower limb amputations performed between 2014 and 2018 on patients aged 20+ years with diabetes were obtained from the Queensland Hospital Admitted Patient Data Collection. Rates were calculated using the number of people, rather than the number of amputation procedures. A Bayesian hierarchical spatial multivariate model was used to examine patterns over 516 populated statistical areas 2 in Queensland. Results During 2014 to 2018, 3,548 Queenslanders had at least one minor amputation, and 1,114 had at least one major amputation. Modelled amputation rates varied markedly across the State (standardised morbidity ratio (SMR) IQR: 0.67 to 1.22), with areas in far north Queensland having extremely high rates. There was consistently high area-level correlation between minor and major amputation rates. The highest SMRs for both minor and major amputations were in the Northern Peninsula. Conclusions Elevated rates of minor and major amputations in areas in Queensland, most noticeably the far north, indicate an urgent need for greater support for people with diabetes-related foot disease. Key messages Text: Large differences in minor and major amputation rates across Queensland indicate that certain regions require greater assistance in managing diabetes-related foot disease.

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