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Associations ( anglais )

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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

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Morphology ( anglais )

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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

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Life Expectancy ( anglais )

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There is no available information on longevity in Dent's horseshoe bats. Other small Rhinolophus species can live up to 20 years old.

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Habitat ( anglais )

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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

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Distribution ( anglais )

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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 )

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Trophic Strategy ( anglais )

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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 )

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Associations ( anglais )

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Dent's horseshoe bats are important predators of insects in their native ecosystems.

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Benefits ( anglais )

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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

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Sans titre ( anglais )

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Rhinolophus swinnyi may be best recognized as a part of Rhinolophus denti.

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Behavior ( anglais )

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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

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Conservation Status ( anglais )

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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

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Benefits ( anglais )

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There are no known adverse effects of Dent's horseshoe bats on humans.

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Reproduction ( anglais )

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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)

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Ratpenat de ferradura de Dent ( catalan ; valencien )

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El ratpenat de ferradura de Dent (Rhinolophus denti) és una espècie de ratpenat de la família dels rinolòfids que habita en sabanes d'Angola, Botswana, el Congo, Ghana, Guinea, Guinea Bissau, Namíbia, el Senegal i Sud-àfrica. No hi ha cap amenaça significativa per a la supervivència d'aquesta espècie, tot i que està afectada per pertorbació de les zones de descans.[1]

Aquest tàxon fou anomenat en honor de l'explorador britànic R. E. Dent.[2]

Referències

 src= A Wikimedia Commons hi ha contingut multimèdia relatiu a: Ratpenat de ferradura de Dent Modifica l'enllaç a Wikidata
  1. Jacobs, D.; Cotterill, F.P.D.; Taylor, P.J.; Griffin, M.. Rhinolophus denti. UICN 2008. Llista Vermella d'espècies amenaçades de la UICN, edició 2008, consultada el 29-04-2013.
  2. Beolens, B.; Watkins, M.; Grayson, M. The Eponym Dictionary of Mammals (en anglès). The Johns Hopkins University Press, 2009, p. 106. ISBN 978-0801893049.


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Ratpenat de ferradura de Dent: Brief Summary ( catalan ; valencien )

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El ratpenat de ferradura de Dent (Rhinolophus denti) és una espècie de ratpenat de la família dels rinolòfids que habita en sabanes d'Angola, Botswana, el Congo, Ghana, Guinea, Guinea Bissau, Namíbia, el Senegal i Sud-àfrica. No hi ha cap amenaça significativa per a la supervivència d'aquesta espècie, tot i que està afectada per pertorbació de les zones de descans.

Aquest tàxon fou anomenat en honor de l'explorador britànic R. E. Dent.

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Dent's horseshoe bat ( anglais )

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Dent's horseshoe bat (Rhinolophus denti) is a species of bat in the family Rhinolophidae. It is found in Angola, Botswana, Ghana, Guinea, Guinea-Bissau, Namibia, South Africa, and Zimbabwe. The bat's natural habitats are dry savannah country and it roosts in caves and other subterranean habitats.

Description

Dent's horseshoe bat is a small species measuring about 7 cm (2.8 in) in length and weighing 6 g (0.2 oz). The fur is long and silky, light brown or grey on the upper parts and paler underneath. The wings are brown with white margins.[2]

Ecology

Dent's horseshoe bat is a colonial species which roosts in groups varying from a few individuals to over a hundred. The roosts are usually in cool, humid caves. The bats have the ability to enter a state of torpor under certain environmental conditions. The bats are insectivorous, feeding on a variety of soft-bodied insects caught on the wing at night. Little is known of the breeding habits of this bat, but they are likely to be similar to those of other Rhinolophus species, with a single offspring becoming independent about two months after it is born.[2]

Status

Dent's horseshoe bat has two distinct populations separated by a gap of hundreds of kilometres. One is in West Africa, in Senegal, Guinea, Guinea-Bissau and Ghana, the other in southern Africa; southern Angola, Namibia, western Botswana, western Zimbabwe and northern South Africa. It may well be more abundant than is presently apparent, but currently, fewer than a hundred colonies are known from West Africa and fewer than two hundred from Southern Africa. The population trend for this bat is unknown, but it faces no particular threats other than the possible disturbance of its roosting sites, and the International Union for Conservation of Nature has rated its conservation status as being of "least concern".[1]

References

  1. ^ a b Monadjem, A.; Griffin, M.; Cotterill, F.P.D.; Jacobs, D.; Taylor, P.J. (2017). "Rhinolophus denti". IUCN Red List of Threatened Species. 2017: e.T19538A21979433. doi:10.2305/IUCN.UK.2017-2.RLTS.T19538A21979433.en. Retrieved 17 November 2021.
  2. ^ a b Strzelec, J. (2009). "Rhinolophus denti". Animal Diversity Web. Retrieved 27 November 2016.
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Dent's horseshoe bat: Brief Summary ( anglais )

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Dent's horseshoe bat (Rhinolophus denti) is a species of bat in the family Rhinolophidae. It is found in Angola, Botswana, Ghana, Guinea, Guinea-Bissau, Namibia, South Africa, and Zimbabwe. The bat's natural habitats are dry savannah country and it roosts in caves and other subterranean habitats.

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Rhinolophus denti ( espagnol ; castillan )

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Rhinolophus denti es una especie de murciélago de la familia Rhinolophidae.

Distribución geográfica

Se encuentra en Angola, Botsuana, Ghana, Guinea, Guinea Bissau, Namibia, Sudáfrica y Zimbabue.

Hábitat

Su hábitat natural son: sabanas áridas cuevas, y los lugares subterráneos

Referencias

  1. Jacobs, D., Cotterill, F.P.D., Taylor, P.J. y Griffin, M. (2008). «Rhinolophus denti». Lista Roja de especies amenazadas de la UICN 2012.2 (en inglés). ISSN 2307-8235. Consultado el 11 de enero de 2013.
  • SIMMONS, N. B. Order Chiroptera. In: WILSON, D. E.; REEDER, D. M. (Eds.). Mammal Species of the World: A Taxonomic and Geographic Reference. 3. ed. Baltimore: Johns Hopkins University Press, 2005. v. 1, p. 312-529.

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Rhinolophus denti: Brief Summary ( espagnol ; castillan )

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Rhinolophus denti es una especie de murciélago de la familia Rhinolophidae.

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Rhinolophus denti ( basque )

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Rhinolophus denti Rhinolophus generoko animalia da. Chiropteraren barruko Rhinolophidae familian sailkatuta dago.

Erreferentziak

  1. (Ingelesez)Mammals - full taxonomy and Red List status Ugaztun guztien egoera 2008an
  2. Thomas (1904) 13 Ann. Mag. Nat. Hist. 386. or..

Ikus, gainera

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Rhinolophus denti: Brief Summary ( basque )

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Rhinolophus denti Rhinolophus generoko animalia da. Chiropteraren barruko Rhinolophidae familian sailkatuta dago.

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Rhinolophus denti ( italien )

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Il ferro di cavallo di Dent (Rhinolophus denti Thomas, 1904) è un Pipistrello della famiglia dei Rinolofidi diffuso in Africa occidentale e in Africa meridionale,[1][2]

Descrizione

Dimensioni

Pipistrello di piccole dimensioni, con la lunghezza totale tra 61 e 84 mm, la lunghezza dell'avambraccio tra 37 e 44 mm, la lunghezza della coda tra 17 e 24 mm, la lunghezza del piede tra 9 e 10 mm, la lunghezza delle orecchie tra 14 e 21 mm e un peso fino a 9 g.[3]

Aspetto

La pelliccia è di media lunghezza e soffice. Le parti dorsali variano dal grigio chiaro al color crema, mentre le parti ventrali sono bianche. Una fase arancione è presente. Le orecchie sono relativamente corte. La foglia nasale presenta una lancetta relativamente corta, ricoperta di peli, triangolare, con i bordi leggermente concavi e con la punta smussata, il processo connettivo è rotondo e della stessa altezza della sella, la quale è priva di peli, con i bordi paralleli e l'estremità larga e arrotondata. La porzione anteriore è stretta, copre quasi completamente il muso e priva di fogliette laterali ma ha un incavo mediano ben sviluppato. Il labbro inferiore ha tre solchi longitudinali. Le membrane alari variano dal nero-grigiastro al marrone, la prima falange del quarto dito è relativamente lunga. La coda è lunga ed inclusa completamente nell'ampio uropatagio. Il primo premolare superiore è piccolo e situato lungo la linea alveolare. La sottospecie R.d.denti è più grande e più chiara. Il cariotipo è 2n=58 FNa=62.

Biologia

Comportamento

Si rifugia singolarmente, in coppia o in grandi gruppi all'interno di grotte, sotto i ponti o nelle cavità di alberi come il Kapok.

Alimentazione

Si nutre di insetti.

Distribuzione e habitat

Questa specie è diffusa nell'Africa occidentale dal Senegal al Ghana e nell'Africa meridionale dall'Angola meridionale fino al Sudafrica.

Vive in boschi, foreste pluviali, savane e nella parte più meridionale dell'areale in zone semi-aride e desertiche.

Tassonomia

Sono state riconosciute 2 sottospecie:

Stato di conservazione

La IUCN Red List, considerato il vasto areale e la popolazione presumibilmente numerosa, classifica R.denti come specie a rischio minimo (LC).[1]

Note

  1. ^ a b c (EN) Jacobs, D., Cotterill, F.P.D., Taylor, P.J. & Griffin, M. 2008, Rhinolophus denti, su IUCN Red List of Threatened Species, Versione 2020.2, IUCN, 2020.
  2. ^ (EN) D.E. Wilson e D.M. Reeder, Rhinolophus denti, in Mammal Species of the World. A Taxonomic and Geographic Reference, 3ª ed., Johns Hopkins University Press, 2005, ISBN 0-8018-8221-4.
  3. ^ Happold & Happold, 2013.

Bibliografia

  • Meredith & David C.D.Happold, Mammals of Africa. Volume IV-Hedgehogs, Shrews and Bats, Bloomsbury, 2013. ISBN 9781408122549

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Rhinolophus denti: Brief Summary ( italien )

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Il ferro di cavallo di Dent (Rhinolophus denti Thomas, 1904) è un Pipistrello della famiglia dei Rinolofidi diffuso in Africa occidentale e in Africa meridionale,

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Denthoefijzerneus ( néerlandais ; flamand )

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Denthoefijzerneus (Rhinolophus denti) is een Afrikaanse vleermuissoort uit de familie der hoefijzerneuzen (Rhinolophidae).

Verspreidingsgebied

Noordelijke Kaap, Zimbabwe, Botswana, Namibië, Mozambique en Guinee.

Bronnen, noten en/of referenties
Geplaatst op:
12-05-2006
Dit artikel is een beginnetje over biologie. U wordt uitgenodigd om op bewerken te klikken om uw kennis aan dit artikel toe te voegen. Beginnetje
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Denthoefijzerneus: Brief Summary ( néerlandais ; flamand )

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Denthoefijzerneus (Rhinolophus denti) is een Afrikaanse vleermuissoort uit de familie der hoefijzerneuzen (Rhinolophidae).

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Rhinolophus denti ( suédois )

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Rhinolophus denti[2][3] är en fladdermusart som beskrevs av Thomas 1904. Rhinolophus denti ingår i släktet Rhinolophus och familjen hästskonäsor.[4][5] IUCN kategoriserar arten globalt som livskraftig.[1] Inga underarter finns listade i Catalogue of Life.[4] Wilson & Reeder (2005) skiljer mellan två underarter.[2]

Arten blir med svans cirka 7 cm lång, har cirka 4,2 cm långa underarmar, en vingspann av ungefär 20 cm och en vikt av cirka 6 g. Ovansidan är täckt av krämfärgad till vit päls med gråa eller bruna skuggor på ryggens mitt. Ibland förekommer gulaktiga exemplar. Rhinolophus denti har en genomskinlig brun flygmembran. Arten öron är breda nära huvudet och spetsig på toppen. Honor har två spenar på bröstet och två vårtor nära anus som liknar spenar men som är funktionslös.[6]

Denna fladdermus har två från varandra skilda populationer, en i västra Afrika och en i södra Afrika. Den lever i savanner med några träd. Individerna vilar främst i grottor och gruvor. Sällan sover de i trädens håligheter.[1] Individerna bildar vid sovplatsen flockar eller kolonier med några hundra medlemmar.[6]

Källor

  1. ^ [a b c] 2008 Rhinolophus denti Från: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2 <www.iucnredlist.org>. Läst 2012-10-24.
  2. ^ [a b] Wilson, Don E., and DeeAnn M. Reeder, eds. (2005) , Mammal Species of the World: A Taxonomic and Geographic Reference, 3rd ed., Rhinolophus denti
  3. ^ Wilson, Don E., and F. Russell Cole (2000) , Common Names of Mammals of the World
  4. ^ [a b] Bisby F.A., Roskov Y.R., Orrell T.M., Nicolson D., Paglinawan L.E., Bailly N., Kirk P.M., Bourgoin T., Baillargeon G., Ouvrard D. (red.) (10 april 2011). ”Species 2000 & ITIS Catalogue of Life: 2011 Annual Checklist.”. Species 2000: Reading, UK. http://www.catalogueoflife.org/annual-checklist/2011/search/all/key/rhinolophus+denti/match/1. Läst 24 september 2012.
  5. ^ ITIS: The Integrated Taxonomic Information System. Orrell T. (custodian), 2011-04-26
  6. ^ [a b] Apps, Peter (2008). Rhinolophus denti. Smither's Mammals of Southern Africa. Struik. sid. 24. ISBN 1-86872-550-2

Externa länkar

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Rhinolophus denti: Brief Summary ( suédois )

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Rhinolophus denti är en fladdermusart som beskrevs av Thomas 1904. Rhinolophus denti ingår i släktet Rhinolophus och familjen hästskonäsor. IUCN kategoriserar arten globalt som livskraftig. Inga underarter finns listade i Catalogue of Life. Wilson & Reeder (2005) skiljer mellan två underarter.

Arten blir med svans cirka 7 cm lång, har cirka 4,2 cm långa underarmar, en vingspann av ungefär 20 cm och en vikt av cirka 6 g. Ovansidan är täckt av krämfärgad till vit päls med gråa eller bruna skuggor på ryggens mitt. Ibland förekommer gulaktiga exemplar. Rhinolophus denti har en genomskinlig brun flygmembran. Arten öron är breda nära huvudet och spetsig på toppen. Honor har två spenar på bröstet och två vårtor nära anus som liknar spenar men som är funktionslös.

Denna fladdermus har två från varandra skilda populationer, en i västra Afrika och en i södra Afrika. Den lever i savanner med några träd. Individerna vilar främst i grottor och gruvor. Sällan sover de i trädens håligheter. Individerna bildar vid sovplatsen flockar eller kolonier med några hundra medlemmar.

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Rhinolophus denti ( ukrainien )

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Rhinolophus denti — вид рукокрилих родини Підковикові (Rhinolophidae).

Поширення

Країни проживання: Ангола, Ботсвана, Конго, Гана, Гвінея, Гвінея-Бісау, Намібія, Сенегал, Південна Африка. Цей вид зазвичай пов'язаний з саванами. Населення багато в чому залежить від печер, покинутих шахт і аналогічних місць для спочинку. Хоча вони також були знайдені сплячими в дуплах дерев.

Загрози та охорона

Здається, немає серйозних загроз для цього виду. Поки не відомо, чи вид присутній в будь-якій з охоронних територій.

Джерела

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Rhinolophus denti: Brief Summary ( ukrainien )

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Rhinolophus denti — вид рукокрилих родини Підковикові (Rhinolophidae).

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Rhinolophus denti ( vietnamien )

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Rhinolophus denti là một loài động vật có vú trong họ Dơi lá mũi, bộ Dơi. Loài này được Thomas mô tả năm 1904.[1]

Chú thích

  1. ^ a ă Wilson, D. E.; Reeder, D. M. biên tập (2005). “Rhinolophus denti”. Mammal Species of the World . Baltimore: Nhà in Đại học Johns Hopkins, 2 tập (2.142 trang). ISBN 978-0-8018-8221-0. OCLC 62265494.

Tham khảo


Hình tượng sơ khai Bài viết dơi này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn.
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Rhinolophus denti: Brief Summary ( vietnamien )

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Rhinolophus denti là một loài động vật có vú trong họ Dơi lá mũi, bộ Dơi. Loài này được Thomas mô tả năm 1904.

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덴트관박쥐 ( coréen )

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덴트관박쥐(Rhinolophus denti)는 관박쥐과에 속하는 박쥐의 일종이다. 앙골라보츠와나, 가나, 기니, 기니비사우, 나미비아, 남아프리카공화국, 짐바브웨에서 발견된다. 자연 서식지는 건조 사바나 지역이고, 동굴과 기타 지하 서식지에서 둥지 생활을 한다.[1]

특징

덴트관박쥐는 몸길이가 약 7cm, 몸무게 6g의 작은 박쥐이다. 털은 길고 부드럽다. 상체는 갈색 또는 회색이고 하체는 연한 색을 띤다. 날개는 갈색이며, 가장자리가 희다.[2]

생태

수십 마리부터 수백 마리 이상까지 다양한 범위로 모여서 집단적인 둥지 생활을 한다. 둥지는 보통 춥고 습한 동굴이다. 특정 환경 조건 아래에서 동면 상태에 들어가는 특징을 갖고 있다. 밤에 비행을 하며, 부드러운 몸을 가진 다양한 곤충을 잡아먹는 식충성 동물이다. 번식 습성에 대해서는 거의 알려져 있지 않지만, 생후 약 2개월이 지나서 한 마리의 새끼를 낳는 다른 관박쥐류와 유사한 것으로 추정된다.[2]

보전 상태

덴트관박쥐는 수백 킬로미터 떨어진 별도의 두 곳에서 서식한다. 한 곳은 서아프리카로 세네갈과 기니, 기니비사우, 가나이다. 나머지 한 곳은 남아프리카로 앙골라 남부와 나미비아, 보츠와나 서부, 짐바브웨 서부, 남아프리카공화국 북부 지역이다. 현재보다 더 풍부할 수 있지만, 현재 서아프리카에서는 100개 이하의 무리가 알려져 있고 남아프리카에서는 200개 이하의 무리가 알려져 있다. 개체군 추이는 알려져 있지 않지만 둥지가 있는 장소의 가능한 교란 이외의 직면하고 있는 특별한 위협 요소는 없으며, 국제 자연 보전 연맹(IUCN)이 보전 등급을 "관심대상종"으로 분류하고 있다.[1]

각주

  1. Jacobs, D.; Cotterill, F.P.D.; Taylor, P.J.; Griffin, M. (2008). “Rhinolophus denti”. 《멸종 위기 종의 IUCN 적색 목록. 2016.2판》 (영어). 국제 자연 보전 연맹. 2016년 11월 27일에 확인함.
  2. Strzelec, J. (2009). Rhinolophus denti. 《Animal Diversity Web.》. 2016년 11월 27일에 확인함.
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