| mosquito consumption by insectivorous bats: does size matter? | insectivorous bats have often been touted as biological control for mosquito populations. however, mosquitoes generally represent only a small proportion of bat diet. given the small size of mosquitoes, restrictions imposed on prey detectability by low frequency echolocation, and variable field metabolic rates (fmr), mosquitoes may not be available to or profitable for all bats. this study investigated whether consumption of mosquitoes was influenced by bat size, which is negatively correlated w ... | 2013 | 24130851 |
| cold-hearted bats: uncoupling of heart rate and metabolism during torpor at sub-zero temperatures. | many hibernating animals thermoregulate during torpor and defend their body temperature (tb) near 0°c by an increase in metabolic rate. above a critical temperature (tcrit), animals usually thermoconform. we investigated the physiological responses above and below tcrit for a small tree-dwelling bat (chalinolobus gouldii, ∼14 g) that is often exposed to sub-zero temperatures during winter. through simultaneous measurement of heart rate (fh) and oxygen consumption (v̇o2 ), we show that the relati ... | 2018 | 29113989 |
| a review of the taxonomic status of the new caledonia wattled bat chalinolobus neocaledonicus revilliod, 1914 (chiroptera: vespertilionidae) and chalinolobus gouldii venatoris thomas, 1908 from northern australia. | the taxonomic status of the new caledonia wattled bat chalinolobus neocaledonicus revilliod, 1914 has remained uncertain since its synonymy with mainland australian gould's wattled bat c. gouldii (gray, 1841) in 1971. although chalinolobus neocaledonicus is now widely accepted as a valid species, this was based on a tentative taxonomic opinion published in 1995. we examined most of the original material used to justify synonymy with c. gouldii, which included the type series of c. gouldii venato ... | 2020 | 33055834 |
| torpor-associated fluctuations in surfactant activity in gould's wattled bat. | the primary function of pulmonary surfactant is to reduce the surface tension (st) created at the air-liquid interface in the lung. surfactant is a complex mixture of lipids and proteins and its function is influenced by physiological parameters such as metabolic rate, body temperature and breathing. in the microchiropteran bat chalinolobus gouldii these parameters fluctuate throughout a 24 h period. here we examine the surface activity of surfactant from warm-active and torpid bats at both 24 d ... | 2002 | 11923100 |
| alterations in surface activity of pulmonary surfactant in gould's wattled bat during rapid arousal from torpor. | the small microchiropteran bat, chalinolobus gouldii, undergoes large daily fluctuations in metabolic rate, body temperature, and breathing pattern. these alterations are accompanied by changes in surfactant composition, predominantly an increase in cholesterol relative to phospholipid during torpor. furthermore, the surface activity changes, such that the surfactant functions most effectively at that temperature which matches the animal's activity state. here, we examine the surface activity of ... | 2003 | 12914772 |
| who's for dinner? high-throughput sequencing reveals bat dietary differentiation in a biodiversity hotspot where prey taxonomy is largely undescribed. | effective management and conservation of biodiversity requires understanding of predator-prey relationships to ensure the continued existence of both predator and prey populations. gathering dietary data from predatory species, such as insectivorous bats, often presents logistical challenges, further exacerbated in biodiversity hot spots because prey items are highly speciose, yet their taxonomy is largely undescribed. we used high-throughput sequencing (hts) and bioinformatic analyses to phylog ... | 2014 | 24118181 |
| confocal imaging, visualization and 3-d surface measurement of small mammalian teeth. | the difficulties traditionally faced by functional morphologists in representing and interpreting three-dimensional objects can now be mostly overcome using available laser and computer imaging technologies. a practical method for three-dimensional imaging of small mammalian teeth using confocal microscopy is reported. moulding and casting of the teeth were first performed, followed by confocal fluorescence imaging. accuracy and precision of the scanned structures were tested in morphometric stu ... | 2001 | 11737544 |
| the roles of cholesterol in pulmonary surfactant: insights from comparative and evolutionary studies. | in most eutherian mammals, cholesterol (chol) comprises approximately 8-10 wt.% or 14-20 mol.% of both alveolar and lamellar body surfactant. it is regarded as an integral component of pulmonary surfactant, yet few studies have concentrated on its function or control. throughout the evolution of the vertebrates, the contribution of cholesterol relative to surfactant phospholipids decreases, while that of the disaturated phospholipids (dsp) increases. chol generally appears to dominate in animals ... | 2001 | 11369535 |
| viral diversity of microbats within the south west botanical province of western australia. | bats are known reservoirs of a wide variety of viruses that rarely result in overt clinical disease in the bat host. however, anthropogenic influences on the landscape and climate can change species assemblages and interactions, as well as undermine host-resilience. the cumulative result is a disturbance of bat-pathogen dynamics, which facilitate spillover events to sympatric species, and may threaten bat communities already facing synergistic stressors through ecological change. therefore, char ... | 2019 | 31847282 |
| nest boxes do not cause a shift in bat community composition in an urbanised landscape. | nest boxes are often used to provide supplementary roosts for cavity-dependent wildlife, but little is known about if they influence faunal community composition. long-term monitoring of bat boxes in south-eastern australia indicated that their use was dominated by one generalist species (chalinolobus gouldii), causing concern that installing bat boxes could cause a shift toward less diverse bat communities. to test this, we conducted a large-scale before-after control-impact experiment at 18 si ... | 2020 | 32277114 |
| temperature regulation and metabolism of an australian bat, chalinolobus gouldii (chiroptera:vespertilionidae) when euthermic and torpid. | the thermal and metabolic physiology of chalinolobus gouldii, an australian vespertilionid bat, was studied in the laboratory using flow-through respirometry. chalinolobus gouldii exhibits a clear pattern of euthermic thermoregulation, typical of endotherms with respect to body temperature and rate of oxygen consumption. the basal metabolic rate of euthermic chalinolobus gouldii is approximately 86% of that predicted for a 17.5-g mammal and falls into the range of mass-specific basal metabolic r ... | 1997 | 9051907 |
| periodic fluctuations in the pulmonary surfactant system in gould's wattled bat (chalinolobus gouldii). | pulmonary surfactant is a mixture of phospholipids, neutral lipids, and proteins that controls the surface tension of the fluid lining the lung. surfactant amounts and composition are influenced by such physiological parameters as metabolic rate, activity, body temperature, and ventilation. microchiropteran bats experience fluctuations in these parameters throughout their natural daily cycle of activity and torpor. the activity cycle of the microchiropteran bat chalinolobus gouldii was studied o ... | 2006 | 11073796 |
| blood plasma concentrations of progesterone, sperm storage and sperm viability and fertility in gould's wattled bat (chalinolobus gouldii). | the fertility and viability of spermatozoa stored by male and female gould's wattled bats, chalinolobus gouldii, was investigated in a captive colony of ten bats (three males and seven females). bats were housed in outdoor flight cages. plasma progesterone concentrations, measured using double antibody radioimmunoassay, isolation experiments plus sperm motility and sperm membrane stability tests were used to evaluate the viability and fertility of stored spermatozoa. mean plasma progesterone con ... | 1996 | 9038773 |
| first report of trypanosoma dionisii (trypanosomatidae) identified in australia. | trypanosomes are blood-borne parasites that can infect a variety of different vertebrates, including animals and humans. this study aims to broaden scientific knowledge about the presence and biodiversity of trypanosomes in australian bats. molecular and morphological analysis was performed on 86 blood samples collected from seven different species of microbats in western australia. phylogenetic analysis on 18s rdna and glycosomal glyceraldehyde phosphate dehydrogenase (ggapdh) sequences identif ... | 2020 | 32981530 |
| reproduction in female gould's wattled bat, chalinolobus gouldii (gray) (vespertilionidae), in western australia. | | 2005 | 1140499 |