Rhinolophus swinnyi may be best recognized as a part of Rhinolophus denti.
Dent's horseshoe bats have a superb sense of hearing and good eyesight similar to other species in the family. The large fleshy pad around the nose of the animal helps to amplify the ultrasonic calls it emits for echolocation. Echolocation allows them to navigate in total darkness, as well as find and capture insect prey at night. Like other mammals, it is also possible that chemical cues and tactile cues play a role in social communication.
Communication Channels: acoustic
Perception Channels: visual ; tactile ; ultrasound ; echolocation ; chemical
Rhinolophus denti is considered least concern on the IUCN red list. Roosts may be persecuted sometimes, but populations are considered large and widespread, although patchily distributed, currently.
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
There are no known adverse effects of Dent's horseshoe bats on humans.
Dent's horseshoe bats are important members of native ecosystems. Their predation on flying insects can impact agricultural pest populations, providing a benefit to farmers.
Positive Impacts: controls pest population
Dent's horseshoe bats are important predators of insects in their native ecosystems.
Dent's horseshoe bats are nocturnal insectivores, feeding on a variety of small, soft-bodied insects. Insect populations are relatively scarce in the arid habitats these bats occupy and more research is needed to understand their foraging strategies.
Animal Foods: insects
Primary Diet: carnivore (Insectivore )
Rhinolophus denti is found in arid savanna regions of western and southern Africa. In West Africa they range from southeastern Senegal to northeastern Ghana. In southern Africa they are found primarily in Namibia, Botswana, and northwestern South Africa. A subspecies, R. d. knorri, is found only in Guinea and has an average forearm length of only 37.5 to 40.5 mm. Populations seem to be patchily distributed and western and southern populations seem to be disjunct, although this may reflect insufficient sampling.
Biogeographic Regions: ethiopian (Native )
Dent's horseshoe bats prefer arid savanna climates and roost in caves and cave-like structures, such as abandoned mine shafts and hollow trees. In winter, when the temperature drops below 11 degrees Celsius, they conserve energy by entering hibernation deep inside of caves.
Habitat Regions: temperate ; terrestrial
Terrestrial Biomes: savanna or grassland
Other Habitat Features: caves
There is no available information on longevity in Dent's horseshoe bats. Other small Rhinolophus species can live up to 20 years old.
Rhinolophus denti is one of the smallest species in the Rhinolophidae family, with an average weight of 6 grams. Their average total length is 70 millimeters with a forearm length between 41 and 43 millimeters. Their fur is long and soft. The color of their fur tends to be light brown or grey on the upper part of their body, with an off white or cream color at the base. The wings are brown with white edges.
Average mass: 6 g.
Range length: 4.3 to 5.7 mm.
Average wingspan: 70 mm.
Other Physical Features: endothermic ; heterothermic ; bilateral symmetry
Sexual Dimorphism: sexes alike
There are no specific reports of predation on Dent's horseshoe bats. In general, bats are preyed on by owls and other raptors in flight and by scansorial predators in their roosts. Like other bats, Dent's horseshoe bats use their cryptic coloration, nocturnal activity, and difficult to access roosts to escape much predation.
Anti-predator Adaptations: cryptic
Nothing is truly known about reproduction in Dent's horseshoe bats. However, they may be similar to other species of Rhinolophus, in which males mate with as many females as possible during hibernation.
There is little reported information on reproduction, however, Dent's horseshoe bats may be similar to closely related Rhinolophus species. In Rhinolophus females generally have a single offspring yearly and temperate species tend to reproduce seasonally. Many temperate species experience delayed implantation. They breed once a year and young are thought to be independent at about 2 months old.
Breeding interval: Rhinolophus denti breeds once yearly.
Average number of offspring: 1.
Average time to independence: 2 months.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
Little is known about parental investment in this species. However, like other Rhinolophus species, mothers give birth to live young and nurse and carry them until they are able to fly, usually after approximately two months.
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female)
