Long-legged bat

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Long-legged bat
Macrophyllum macrophyllum.png
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Chiroptera
Family: Phyllostomidae
Genus: Macrophyllum
Gray, 1838
Species:
M. macrophyllum
Binomial name
Macrophyllum macrophyllum
(Schinz, 1821)
Macrophyllum macrophyllum map.svg

The long-legged bat (Macrophyllum macrophyllum) is a member of the Phyllostomidae family in the order Chiroptera. Both males and females of this species are generally small, with wingspans reaching 80mm with an average weight ranging between 6 and 9 grams. [2] The facial structure of these bats includes a shortened rostrum with a prominent noseleaf. The most defining feature of these bats however, is their long posterior limbs that extend farther than most Phyllostomidae bats. At the ends of these hind legs, the long-legged bat has abnormally large feet equipped with strong claws. [2]

Contents

Distribution and habitat

The first specimen of M. macrophyllum was found in Brazil in 1855. Since then, these bats have been sighted in various locations across South America and Central America. In the northern regions of South America, the long-legged bat has been found in parts of Peru, Ecuador, Bolivia, and Venezuela. In Central America, these bats have been spotted in Costa Rica, Honduras, Guatemala, and Nicaragua. M. macrophyllum has also been located in parts of southern Mexico. [2] Although these bats are fairly small, they have been shown to have a large home-range of up to 150 hectares with females having slightly larger home-ranges than males. [3]

In general, M. macrophyllum is found in regions slightly north of the equator in rain forests and tropical deciduous forest habitats. In the majority of documented sightings, these bats were found near water sources such as lakes, streams, or sea caves off the Pacific coast. [2] It has been inferred that these bats live near water sources because of the abundance of insects at these sights. [3] In addition to being found near the water sources mentioned previously, these bats have been found roosting in man-made structures such as water culverts, modern buildings, and even ancient Panama ruins. [2]

Diet and foraging behavior

Though bats can have a diet ranging from fruit to meat, M. macrophyllum is insectivorous, meaning that their diet mainly consists of insects. Stomach content analysis of these bats has revealed mainly winged insects, indicating that the majority of the insects that M. macrophyllum consumes are aerial insects. Although flying insects are the main food source of the long-legged bat, these bats have also been known to supplement their diet with animal blood, but not with fruit. Due to the prominence of its posterior extremities and large feet, researchers have suggested aquatic hunting in these bats similar to Noctilo fish-eating bats, but this has yet to be proven. [2]

The most commonly observed foraging strategy of M. macrophyllum is gleaning, in which a bat will hover over a body of water and pick up insects on the surface using its enlarged feet and long hind limbs. This system of foraging in M. macrophyllum differs from most other phyllostomid bats. [3] However, these bats are not limited to this gleaning foraging strategy alone; laboratory studies have shown that M. macrophyllum is also capable of aerial hawking, a foraging strategy in which bats prey on insects in midair. [4] These bats perform both of these foraging strategies equally effectively. This variation in foraging allows these bats to take advantage of the variety of insects in their environment, whether they are sitting on the water or hovering above it. [4]

Echolocation

Like many species in the order Chiroptera, M. macrophyllum uses echolocation to navigate its environment and detect its prey. These bats are able to do this by sending out sound waves and receiving these waves when they bounce off various objects. As the long-legged bat approaches an object, the frequency of their echolocation signals will increase so they are able to create a better spatial map. [5]

Unlike many bat species from the family Phyllostomidae that use low-intensity "whispering" echos, the long-legged bat has been shown to produce high-intense echolocation calls to detect its prey. M. macrophyllum will adjust the intensity of its calls depending on its environment. When in areas with high acoustic clutter, the bats will decrease their signal intensity, while in more open areas, the bats will increase their signal intensity. By increasing call intensity in a more open environment, this allows these bats to have a broader detection range for food. Average intensity output has been shown increase by 11 dB, corresponding to a 4x amplitude increase when echolocating in open environments compared to enclosed environments. [5]

Related Research Articles

Animal echolocation Method used by several animal species to determine location using sound

Echolocation, also called bio sonar, is a biological sonar used by several animal species. Echolocating animals emit calls out to the environment and listen to the echoes of those calls that return from various objects near them. They use these echoes to locate and identify the objects. Echolocation is used for navigation, foraging, and hunting in various environments.

Microbat Suborder of mammals

Microbats constitute the suborder Microchiroptera within the order Chiroptera (bats). Bats have long been differentiated into Megachiroptera (megabats) and Microchiroptera, based on their size, the use of echolocation by the Microchiroptera and other features; molecular evidence suggests a somewhat different subdivision, as the microbats have been shown to be a paraphyletic group.

Greater bulldog bat Species of mammal

The greater bulldog bat or fisherman bat is a species of fishing bat native to Latin America. The bat uses echolocation to detect water ripples made by the fish upon which it preys, then uses the pouch between its legs to scoop the fish up and its sharp claws to catch and cling to it. It is not to be confused with the lesser bulldog bat, which, though belonging to the same genus, merely catches water insects, such as water striders and water beetles.

Leaf-nosed bat Family of bats

The New World leaf-nosed bats (Phyllostomidae) are found from southern North America to South America, specifically from the Southwest United States to northern Argentina. They are ecologically the most varied and diverse family within the order Chiroptera. Most species are insectivorous, but the phyllostomid bats include within their number true predatory species and frugivores. For example, the spectral bat, the largest bat in the Americas, eats vertebrate prey, including small, dove-sized birds. Members of this family have evolved to use food groups such as fruit, nectar, pollen, insects, frogs, other bats, and small vertebrates, and in the case of the vampire bats, even blood.

Spectral bat Species of bat

The spectral bat, also called the great false vampire bat or Linnaeus's false vampire bat, is a large, carnivorous leaf-nosed bat found in Mexico, Central America, and South America. It is the only member of the genus Vampyrum; its closest living relative is the big-eared woolly bat. It is the largest bat species in the New World, as well as the largest carnivorous bat: its wingspan is 0.7–1.0 m (2.3–3.3 ft). It has a robust skull and teeth, with which it delivers a powerful bite to kill its prey. Birds are frequent prey items, though it may also consume rodents, insects, and other bats.

New Zealand lesser short-tailed bat Species of bat

The New Zealand lesser short-tailed bat is a small-sized omnivorous species endemic to the islands of New Zealand. It is one of two extant and three overall mammal species unique to New Zealand. The NZ lesser short-tailed bat's closest relative, M. robusta, was last seen in 1965 and is presumed extinct due to intense predation from ship rats introduced in the last few centuries. These bats are also commonly referred to as pekapeka, their Te Reo Māori name. Lesser short-tailed bats have unique adaptations that differentiate them from bats found in other parts of the world. For example, they are fully capable of moving along the ground to search for food, and the males sing to attract partners, taking turns to do so. Lesser short-tailed bats are a vulnerable species, so extensive conservation work and research are being done to prevent extinction.

Greater noctule bat Species of bat

The greater noctule bat is a rare carnivorous bat found in Europe, West Asia, and North Africa. It is the largest and least studied bat in Europe with a wingspan of up to 46 centimetres (18 in) and is one of the few bat species to feed on passerine birds. Greater noctule bats are the only bat species to hunt birds on the wing rather than when roosting. The greater noctule bat has wings adapted for open-air hunting and uses echolocation frequencies above the hearing range of birds.

Greater false vampire bat Species of bat

The greater false vampire bat is a species of bat in the family Megadermatidae, the false vampire bats. It is native to Asia. It is also known as the Indian false vampire bat or greater false-vampire

Sebas short-tailed bat Species of bat

Seba's short-tailed bat is a common and widespread bat species in the family Phyllostomidae. They are found in Central America, the northern parts of South America, and in the Antilles islands.

Common big-eared bat Species of bat

The common big-eared bat is a bat species from South and Central America. It is a neotropical leaf-nosed bat.

Large slit-faced bat Species of bat

The large slit-faced bat, Nycteris grandis, is a species of slit-faced bat with a broad distribution in forest and savanna habitats in West, Central, and East Africa. N. marica, is the available name for the southern savanna species if it is recognized as distinct from this species.

Hawaiian hoary bat Species of bat

The Hawaiian hoary bat, also known as ʻōpeʻapeʻa, is a species of bat endemic to the islands of Hawaiʻi. Whereas the mainland hoary bat is found throughout North America, the Hawaiian hoary bat is distributed only among the major volcanic islands of Hawaiʻi, making it the only extant and native terrestrial mammal in the state; although some studies also posit that the mainland hoary bat lives in sympatry on the Hawaiian Islands alongside the Hawaiian hoary bat, this has been disputed. The Hawaiian hoary bat was officially named the state land mammal of Hawaiʻi in 2015. It is a federally listed endangered taxon of the United States.

Golden-tipped bat Species of bat

The golden-tipped bat is a species of Microchiropteran in the family Vespertilionidae. It is found in Papua New Guinea and in Australia, especially scattered along the eastern part of Australia. The species is considered uncommon, and is listed as endangered in Australia.

Gray short-tailed bat Species of bat

The gray short-tailed bat, or Hahn's short-tailed bat, is a species of bat in the family Phyllostomidae native to Mexico and Central America.

Little free-tailed bat Species of bat

The little free-tailed bat is a species of the genus Chaerephon in the family Molossidae. It is widely distributed across Africa and islands around the continent.

Waterhouses leaf-nosed bat Species of bat

Waterhouse's leaf-nosed bat is a species of big-eared bat in the family Phyllostomidae. It is found in the Cayman Islands, Cuba, the Dominican Republic, Guatemala, Haiti, Jamaica, and Mexico, with a range from Sonora to Hidalgo Mexico, south to Guatemala and the Greater Antilles.

Cape horseshoe bat Species of bat

The Cape horseshoe bat is a species of bat in the family Rhinolophidae. It is endemic to South Africa, and is potentially threatened by habitat loss and disturbance of its roosting sites, although it is present in large enough numbers to be considered of least concern by the IUCN.

<i>Histiotus</i> Genus of bats

Histiotus is a genus of South American vesper bats with species that include:

Cinnamon red bat Species of bat

The cinnamon red bat is a species of bat in the family Vespertilionidae. It was first described from a specimen that had been collected in Chile. For more than one hundred years after its initial description, it was largely considered a synonym of the eastern red bat. From the 1980s onward, it was frequently recognized as distinct from the eastern red bat due to its fur coloration and differences in range. It has deep red fur, lacking white "frosting" on the tips of individual hairs seen in other members of Lasiurus. It has a forearm length of 39–42 mm (1.5–1.7 in) and a weight of 9.5–11.0 g (0.34–0.39 oz).

Bat flight

Bats are the only mammal capable of true flight. Bats use flight for capturing prey, breeding, avoiding predators, and long-distance migration. Bat wing morphology is often highly specialized to the needs of the species.

References

  1. Rodriguez, B.; Pineda, W. (2015). "Macrophyllum macrophyllum". IUCN Red List of Threatened Species . 2015: e.T12615A22025883. doi: 10.2305/IUCN.UK.2015-4.RLTS.T12615A22025883.en . Retrieved 11 November 2021.
  2. 1 2 3 4 5 6 Harrison, David L (1975). "Macrophyllum macrophyllum". Mammalian Species. 62 (62): 1–3. doi:10.2307/3503986. JSTOR   3503986.
  3. 1 2 3 Meyer, Christoph F J (2005). "Home-Range Size and Spacing Patterns of Macrophyllum macrophyllum (Phyllostomidae) Foraging over Water". Journal of Mammalogy. 86 (3): 587–598. doi: 10.1644/1545-1542(2005)86[587:hsaspo]2.0.co;2 .
  4. 1 2 Weinbeer, Moritz; Kalko, Elisabeth K. V.; Jung, Kirsten (2013). "Behavioral flexibility of the trawling long-legged bat, Macrophyllum macrophyllum (Phyllostomidae)". Frontiers in Physiology. 4: 342. doi: 10.3389/fphys.2013.00342 . PMC   3838978 . PMID   24324442.
  5. 1 2 Brinklov, S.; Kalko, E. K. V.; Surlykke, A. (16 December 2008). "Intense echolocation calls from two 'whispering' bats, Artibeus jamaicensis and Macrophyllum macrophyllum (Phyllostomidae)". Journal of Experimental Biology. 212 (1): 11–20. doi: 10.1242/jeb.023226 . PMID   19088206.