HEMATOLOGY, PLASMA BIOCHEMISTRY, AND URINALYSIS OF FREE-RANGING GREY-HEADED FLYING FOXES (PTEROPUS POLIOCEPHALUS) IN AUSTRALIA

2018 ◽  
Vol 49 (3) ◽  
pp. 591-598 ◽  
Author(s):  
Daniel Edson ◽  
Hume Field ◽  
Lee McMichael ◽  
David Mayer ◽  
John Martin ◽  
...  
Keyword(s):  
Plasma Biochemistry ◽  
Flying Foxes ◽  
Pteropus Poliocephalus ◽  
Free Ranging

scholarly journals Testosterone is associated with harem maintenance ability in free-ranging grey-headed flying-foxes, Pteropus poliocephalus

2009 ◽  
Vol 5 (6) ◽  
pp. 758-761 ◽  
Author(s):  
Stefan M. Klose ◽  
Justin A. Welbergen ◽  
Elisabeth K. V. Kalko
Keyword(s):  
Plasma Testosterone ◽  
Flying Foxes ◽  
Mating Period ◽  
Social Challenges ◽  
Testosterone Levels ◽  
Harem Size ◽  
Pteropus Poliocephalus ◽  
Original Size ◽  
Complex Forms ◽  
Free Ranging

Males of many vertebrate species aggressively defend their reproductive interests by monopolizing females, and the ‘challenge hypothesis’ predicts that testosterone levels in reproductive contexts rise to facilitate males' competitive behaviours necessary for meeting social challenges. The hypothesis is successful in explaining patterns of testosterone secretion in many avian species, but remains comparatively unexplored in mammals. ‘Circulating plasma testosterone levels (T)’ were studied in relation to harem maintenance in grey-headed flying-foxes, Pteropus poliocephalus . In this species, harems provide mating opportunities and so a male's ability to maintain a harem is likely to correlate with his fitness. We hypothesized that if T reflect a male's ability to withstand challenges from competitors, then T should be linked to successful harem maintenance. To test this, we temporarily removed males from their territories prior to and during the short mating period, recording their harem sizes both before removal and after reintroduction. Most males successfully reclaimed their territory and a harem, but during the mating period, males with higher T had harems closer to their original size, and males with lower T suffered reduction in harem size. Our findings highlight the role of T in harem maintenance in a major mammalian taxon with complex forms of social organization.

Retinotopic orgarnzation of the primary visual cortex of flying foxes (Pteropus poliocephalus and pteropus scapulatus)

1993 ◽  
Vol 335 (1) ◽  
pp. 55-72 ◽  
Author(s):  
Marcello G. P. Rosa ◽  
Leisa M. Schmid ◽  
Leah A. Krubitzer ◽  
John D. Pettigrew
Keyword(s):  
Visual Cortex ◽  
Primary Visual Cortex ◽  
Flying Foxes ◽  
Pteropus Poliocephalus

Food Selection by Grey-headed Flying Foxes (Pteropus poliocephalus) Occupying a Summer Colony Site near Gosford, New South Wales

1991 ◽  
Vol 18 (1) ◽  
pp. 111 ◽  
Author(s):  
K Parry-Jones ◽  
ML Augee
Keyword(s):  
Food Selection ◽  
Food Sources ◽  
Flying Foxes ◽  
Food Items ◽  
South Wales ◽  
The Family ◽  
Pteropus Poliocephalus ◽  
Marked Preference ◽  
Colony Site

A colony site occupied by grey-headed flying-foxes (Pteropus poliocephalus) from October to May on the central coast of N.S.W. was monitored over a 48 month period (1986-1990). Faecal and spat-out material was collected for microscopic determination of contents. Comparison of food items in the droppings with the array of possible food sources present in the vicinity of the colony at the same time showed a marked preference for certain foods, in particular blossoms of the family Myrtaceae and of the genus Banksia. Cultivated orchard fruits were not a preferred food and were only taken at times when preferred food items were scarce.

scholarly journals HEMATOLOGY AND PLASMA BIOCHEMISTRY REFERENCE RANGE VALUES FOR FREE-RANGING DESERT TORTOISES IN ARIZONA

2002 ◽  
Vol 38 (1) ◽  
pp. 143-153 ◽  
Author(s):  
Vanessa M. Dickinson ◽  
James L. Jarchow ◽  
Mark H. Trueblood
Keyword(s):  
Reference Range ◽  
Plasma Biochemistry ◽  
Free Ranging

Use of a Portable Analyzer for Venous Blood Gas and Biochemistry Analysis in Free-Ranging Indian Flying Foxes (Pteropus giganteus) in Myanmar

2021 ◽  
Vol 57 (1) ◽  
Author(s):  
Jennifer C. Kishbaugh ◽  
Marc T. Valitutto ◽  
Ohnmar Aung ◽  
Kyaw Yan Naing Tun ◽  
Lee-Ann C. Hayek ◽  
...  
Keyword(s):  
Venous Blood ◽  
Blood Gas ◽  
Flying Foxes ◽  
Portable Analyzer ◽  
Venous Blood Gas ◽  
Free Ranging

Daytime behaviour of the grey-headed flying fox Pteropus poliocephalus Temminck (Pteropodidae: Megachiroptera) at an autumn/winter roost.

2006 ◽  
Vol 28 (1) ◽  
pp. 7 ◽  
Author(s):  
K. A. Connell ◽  
U. Munro ◽  
F. R. Torpy
Keyword(s):  
Management Strategies ◽  
Reproductive Period ◽  
Urban Environments ◽  
Flying Foxes ◽  
Fruit Bat ◽  
Open Forest ◽  
Pteropus Poliocephalus ◽  
Baseline Information ◽  
Daytime Behaviour ◽  
Flying Fox

The grey-headed flying fox (Pteropus poliocephalus Temminck) is a threatened large fruit bat endemic to Australia. It roosts in large colonies in rainforest patches, mangroves, open forest, riparian woodland and, as native habitat is reduced, increasingly in vegetation within urban environments. The general biology, ecology and behaviour of this bat remain largely unknown, which makes it difficult to effectively monitor, protect and manage this species. The current study provides baseline information on the daytime behaviour of P. poliocephalus in an autumn/winter roost in urban Sydney, Australia, between April and August 2003. The most common daytime behaviours expressed by the flying foxes were sleeping (most common), grooming, mating/courtship, and wing spreading (least common). Behaviours differed significantly between times of day and seasons (autumn and winter). Active behaviours (i.e., grooming, mating/courtship, wing spreading) occurred mainly in the morning, while sleeping predominated in the afternoon. Mating/courtship and wing spreading were significantly higher in April (reproductive period) than in winter (non-reproductive period). Grooming was the only behaviour that showed no significant variation between sample periods. These results provide important baseline data for future comparative studies on the behaviours of flying foxes from urban and ?natural? camps, and the development of management strategies for this species.

Movements of Australian flying foxes (Pteropodidae: Megachiroptera).

1965 ◽  
Vol 13 (1) ◽  
pp. 53 ◽  
Author(s):  
JE Nelson
Keyword(s):  
Food Supply ◽  
Late Summer ◽  
Early Summer ◽  
Summer Camps ◽  
Surrounding Area ◽  
Flying Foxes ◽  
Coastal Species ◽  
Pteropus Poliocephalus ◽  
Immature Form

Evidence is presented to show that the coastal species Pteropus poliocephalus and P. gouldi congregate in large camps from early until late summer. In these large summer camps the young are born and raised, the sexes become associated, and conception occurs. The numbers within these camps are influenced by the availability of blossom in the surrounding area. The adults are normally dispersed during the winter while the immature form winter camps. These camps contain a larger percentage of adults in those winters in which blossom is more abundant. The inland species P. scapulatus forms large camps in early summer but the young are born in autumn when the population is dispersed. Since the food supply of P. scapulatus is less dependable and undergoes greater fluctuations than that of the coastal species, P. scapulatus is more nomadic than P. poliocephalus and P. gouldi.

scholarly journals Flight Physiology of Flying Foxes, Pteropus Poliocephalus

1985 ◽  
Vol 114 (1) ◽  
pp. 619-647 ◽  
Author(s):  
Roger E. Carpenter
Keyword(s):  
Pulmonary Ventilation ◽  
Thermal Conductance ◽  
Power Input ◽  
Allometric Equation ◽  
Evaporative Heat Loss ◽  
Flying Foxes ◽  
Ambient Temperatures ◽  
Flight Range ◽  
Pteropus Poliocephalus ◽  
Ventilation Rates

Oxygen consumption was measured during flight in two flying foxes (Pteropus poliocephalus) at airspeeds of 4–8.6ms−1. There was good agreement with the measured power input of the only previously measured large bat, and with an allometric equation predicting power input for flying vertebrates. Measurements of respiratory exchange ratios, pulmonary water loss, respiratory frequencies, heart rates and body temperatures of both bats flying at intermediate airspeeds were compared with equivalent measurements on other bats or birds in flight. Despite a high non-evaporative thermal conductance in flight, the P. poliocephalus became severely hyperthermic at ambient temperatures (Ta) above 25°C. The failure to dissipate heat as successfully as flying birds at high Ta is apparently the result of an inability to increase pulmonary ventilation rates, and thus increase rates of evaporative heat loss. The effect of airspeed on endurance was measured systematically on one bat. Endurance was not limited by energy reserves at all airspeeds, and flight times were significantly greater at the airspeed of minimum power input (Vmp). The endurance of both bats was so reduced at the higher airspeeds that they would not achieve maximum flight range in still air at the velocity where cost of locomotion is lowest. Contrary to a common assumption, flight range would be maximized at the Vmp.

Hematology, plasma biochemistry, and trace element reference values for free-ranging adult Magellanic Penguins (Spheniscus magellanicus)

Polar Biology ◽  
2019 ◽  
Vol 42 (4) ◽  
pp. 733-742 ◽  
Author(s):  
Luciana Gallo ◽  
Ralph Eric Thijl Vanstreels ◽  
Robert A. Cook ◽  
William B. Karesh ◽  
Marcela Uhart
Keyword(s):  
Trace Element ◽  
Reference Values ◽  
Plasma Biochemistry ◽  
Spheniscus Magellanicus ◽  
Magellanic Penguins ◽  
Free Ranging
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