| the basal or indifferent cell and the ciliary vacuole in the oviducal epithelium of the long-tongued bat, glossophaga soricina. | | 1972 | 5046645 |
| permeability of hair to cadmium, copper and lead in five species of terrestrial mammals and implications in biomonitoring. | the capacity of mammal hair to absorb toxic metals and its utility in biomonitoring has been broadly studied. though these metal-binding properties has generally been attributed to the sulphur contained in cysteine, an amino acid that forms part of keratin, there are not many experimental studies that analyze the role of sulphur in the external deposition of potentially toxic metallic elements in order to better understand the potential of hair in biomonitoring and generate better tools for diff ... | 2017 | 29151127 |
| bromeliads going batty: pollinator partitioning among sympatric chiropterophilous bromeliaceae. | pollinators can be a limited resource and natural selection should favour differences in phenotypic characteristics to reduce competition among plants. bats are important pollinators of many neotropical plants, including the bromeliaceae; however, the pre-pollination mechanisms for isolation among sympatric bat-pollinated bromeliads are unknown. here, we studied the mechanisms for reproductive segregation between pitcairnia recurvata, pseudalcantarea viridiflora, werauhia noctiflorens and w. nut ... | 2019 | 31186827 |
| maternal mouth-to-mouth feeding behaviour in flower-visiting bats, but no experimental evidence for transmitted dietary preferences. | in addition to breast milk, several mammals feed their offspring with primary food items. this provisioning can offer both energetic and informational benefits: young might use parentally provided food as a source of nutrients, but also as a valuable option to socially learn about adults' food. for bats, there are only very few and partially anecdotal reports of adults feeding their pups with primary food, and there is also a lack of information about social learning processes during ontogeny. i ... | 2019 | 31170462 |
| the dynamics of hovering flight in hummingbirds, insects and bats with implications for aerial robotics. | we analyze the effects of morphology and wing kinematics on the performance of hovering flight. we present a simplified dynamical model with body translational and rotational degrees of freedom that incorporates the flapping, long-axis wing rotation and folding of the wing. to validate our simulation, we compare our results with direct measurements from hovering insects, hummingbirds and bats. results show that long-axis wing rotation angle (a proxy for pronation) has a significant effect on ene ... | 2018 | 30411710 |
| low energy reserves are associated with fasting susceptibility in neotropical nectar bats glossophaga soricina. | neotropical nectar-feeding bats consume large amounts of sugar and use most of their energy-rich diet directly from the bloodstream, suggesting an adaptation towards lower body energy reserves. here we tested the hypothesis that bats glossophaga soricina spare the energy costs of storing energy reserves, even if this would represent a risky susceptibility during fasting. blood glucose concentrations in 18 h fasted bats showed a 40% decrease. breast muscle and adipose tissue lipids, as well as ca ... | 2019 | 30133553 |
| the energetic cost of mounting an immune response for pallas's long-tongued bat (glossophaga soricina). | the acute phase response (apr) is the first line of defense of the vertebrate immune system against pathogens. mounting an immune response is believed to be energetically costly but direct measures of metabolic rate during immune challenges contradict this assumption. the energetic cost of apr for birds is higher than for rodents, suggesting that this response is less expensive for mammals. however, the particularly large increase in metabolic rate after apr activation for a piscivorous bat (myo ... | 2018 | 29888121 |
| body lift, drag and power are relatively higher in large-eared than in small-eared bat species. | bats navigate the dark using echolocation. echolocation is enhanced by external ears, but external ears increase the projected frontal area and reduce the streamlining of the animal. external ears are thus expected to compromise flight efficiency, but research suggests that very large ears may mitigate the cost by producing aerodynamic lift. here we compare quantitative aerodynamic measures of flight efficiency of two bat species, one large-eared (plecotus auritus) and one small-eared (glossopha ... | 2017 | 29070593 |