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Although there are no known adverse effects of P. rodricensis on humans, some farmers mistakenly believe that they damage fruit orchards.
Pteropus rodricensis is threated with extinction due to habitat loss. In addition to habitat destruction by humans, natural disasters like cyclones have significantly reduced the population. Although cyclones would have had little impact on this species historically, with reductions in rainforest cover, there is currently no buffer provided by additional rainforest when damage occurs because of storms.
Since 1992, Rodriguez flying foxes have been a part of the Species Survival Plan (SSP), and have been successfully breed in captivity. However, it has not yet been reintroduced to its native habitat.
US Federal List: endangered
CITES: appendix i
IUCN Red List of Threatened Species: critically endangered
Because Rodriguez fruit bats are frugivores, they do not echolocate. Instead, they have good vision and sense of smell, which allows them to find their food. Since scent marking is used to denote territories, olfactory communication must play some role in this species. No specific information on the communication of P. rodricensis is available; however, other members of the genus Pteropus are known to communicate with vocalizations, which vary depending up on the situation. Also, communication behaviors associated with mating involve vocal, visual, olfactory, and tactile signals. These bats are likely to resemble other members of the genus with respect to communication.
Communication Channels: visual ; tactile ; acoustic ; chemical
Other Communication Modes: scent marks
Perception Channels: visual ; tactile ; acoustic ; chemical
Rodriguez fruit bats pollinate crops and disperse the seeds of plants and trees. They also eat the fruits that are too ripe to be harvested.
Positive Impacts: pollinates crops
Pteropus rodricensis helps the rainforest to regenerate by dispersing seeds, which are spit out during feeding. This aids recovery of the forest after cyclones and human destruction. This bat also helps to pollinate plants and trees as it feeds off pollen.
Ecosystem Impact: disperses seeds; pollinates; creates habitat
Pteropus rodricensis, a frugivore, uses its sight and smell to find food. Rodriguez fruit bats are nocturnal. At dusk, individuals fly to fruit trees where they feed, rest, digest their food for several hours before returning to the roosting site. Rodriguez flying foxes drink fruit juices by crushing the fruit in the mouth and pressing the tongue against the upper plate. Juice and soft pulp are swallowed, but the bat spits out the skin, hard pulp, and seeds in the form of a pellet. The usual diet consists of bananas (Musa spp.), guavas (Psidium spp.), mangoes (Magifera spp.), papayas (Carica spp.), figs (Ficus spp.), breadfruit (Treculia africana), ripe tamarind pods (Tamarindus spp.), flowers, nectar, pollen and sometimes leaves or bark.
Plant Foods: leaves; wood, bark, or stems; fruit; nectar; pollen; flowers
Primary Diet: herbivore (Frugivore )
Pteropus rodricensis, also known as Rodriguez flying foxes or Rodriguez fruit bats, lives only on the Island of Rodriguez, a part of Mauritius located in the southern Indian Ocean east of Madagascar. Rodriguez is sometimes spelled "Rodrigues" in the literature.
Biogeographic Regions: indian ocean (Native )
Other Geographic Terms: island endemic
Due to the destruction of much of the natural environment of Rodriguez, Rodriguez flying foxes are confined to Cascade Pigeon, a small wooded valley on the island. These bats depend on dense rainforest habitat and roost in mature trees. These trees protect the bats from frequent cyclones.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: forest
Information on the lifespan of this species is inadequate, but according to the Lubee Bat Conservancy, Pteropus species can live for approximately 30 years in captivity. The Lubee Foundation has a unique collection of species housed in captivity which includes various species of the genus Pteropus. Observation of other Pteropus species held in captivity indicate that individuals typically live between 9 and 17 years. Pteropus rodricensis is probably similar to other species of the same genus in terms of longevity.
Average lifespan
Status: captivity: 28 years.
Pteropus rodricensis has thick fur and is usually a dark chestnut brown color with a layer of golden-brown covering the head, neck, and shoulders. It is often called a “Golden Bat;" however, its color can also vary between black, silver, yellow-orange, and red. The body is from 15 to 20 cm long, and the wingspan from 50 to 90 cm. Individuals weigh between 300 and 350 g. There is no tail.
Rodriguez flying foxes have large eyes and large, widely spaced ears. Each thumb and second finger has a claw, and the claw on the thumb is hooked for climbing. Males and females look the same, although males are generally larger.
The basal metabolic rate of these animals is reported at 134.9 cubic cm of oxygen per hour.
Range mass: 300 to 350 g.
Range length: 15 to 20 cm.
Range wingspan: 50 to 90 cm.
Average basal metabolic rate: 134.9 cm3.O2/g/hr.
Sexual Dimorphism: sexes alike; male larger
Other Physical Features: endothermic ; bilateral symmetry
Average basal metabolic rate: 0.753 W.
There is no information available on predators of Rodriguez flying foxes.
In general, mating for Rodriguez flying foxes is random and promiscuous. They form harems of one male and up to 8 females. Males attract and retain females using vocal and flight displays; these are also ways that males defend their territory, which they scent-mark by rubbing their head, neck, and chest on branches. Rodriguez fruit bats are very social animals; however, males tend to roost alone, whereas females of different harems may roost together in large colonies.
Mating System: polygynous
In the wild, Rodriguez flying foxes breed from October to December. Females produce only one offspring per breeding season. In captivity, however, breeding occurs throughout the year and a female can produce up to two offspring per year.
Gestation lasts from 120 to 180 days. Newborns typically weigh around 20 to 30% of the mother's weight. It usually takes the female about 40 minutes to give birth. In order to give birth, she hangs right-side up from her thumbs and catches the baby with the patagium of her wings.
It is believed that females give birth alone. However, an assisted birth in captivity has been observed. The female in labor was struggling to give birth and was in the wrong position; instead of being right-side up, she was in roosting position. Another female "tutored" the mother, showing her the proper birthing position, and helped stimulate birth by licking the mother's vagina. Only with the help of the "midwife" bat was the mother able to finally give birth. Although this is an isolated example of allomaternal care, it may not be unusual in this species. Because Rodriguez flying foxes usually give birth in areas that are difficult to observe, few births in the wild have been documented.
Rodriguez flying foxes are born fully furred. The eyes are wide open and the infant is alert. Because wings are underdeveloped, newborn pups cling to their mothers' bellies and drink from the teats under their mothers' armpits. The pups have sharp milk teeth, which firmly attach to the mother's fur. These milk teeth eventually fall out and are replaced by permanent teeth. The baby stays attached to its mother for about 30 days, until it becomes too heavy to carry, after which it is left at the roost. At about 50 days, the pup starts exploring the roost area and flaps its wings to strengthen them. Interactions with other pups in the roost help to develop social skills.
After 2 to 3 months, pups are flying and are fully weaned, although they still roost with their mothers. Rodriguez fruit bats do not become fully independent until 6 to 12 months after birth. These bats reach maturity at 1 to 2 years of age.
Breeding interval: Rodriguez flying foxes breed once yearly.
Breeding season: Rodriguez fruit bats breed seasonally from October to December.
Average number of offspring: 1.
Range gestation period: 120 to 180 days.
Range weaning age: 2 to 3 months.
Range time to independence: 6 to 12 months.
Range age at sexual or reproductive maturity (female): 12 to 24 months.
Range age at sexual or reproductive maturity (male): 12 to 24 months.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization ; viviparous
Average birth mass: 45 g.
Average number of offspring: 1.
Sources have not provided any information on the various forms of parental investment by P. rodricensis. Females provide their young with milk and protection. Also, because pups have a limited ability to regulate their body temperature, the mother's selection and maintenance of a thermal environment are important aspects of parental care. The role of males is not exactly clear. Information on the parental investment of the family Pteropodidae is also limited.
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female, Protecting: Female); pre-independence (Provisioning: Female, Protecting: Female)
La guineu voladora de l'illa Rodrigues (Pteropus rodricensis) és una espècie de ratpenat de la família dels pteropòdids. És endèmica de l'illa Rodrigues (Maurici). El seu hàbitat natural són els boscos primaris i secundaris. Està amenaçada per la desforestació i els fenòmens meteorològics extrems.[1]
La guineu voladora de l'illa Rodrigues (Pteropus rodricensis) és una espècie de ratpenat de la família dels pteropòdids. És endèmica de l'illa Rodrigues (Maurici). El seu hàbitat natural són els boscos primaris i secundaris. Està amenaçada per la desforestació i els fenòmens meteorològics extrems.
Der Rodrigues-Flughund (Pteropus rodricensis) ist eine Art aus der Gattung Eigentliche Flughunde in der Familie der Flughunde. Er ist endemisch auf Rodrigues, einer Insel im Indischen Ozean, die zu Mauritius gehört. Aufgrund des begrenzten Verbreitungsgebiets, Bejagung, Lebensraumverlust und Bedrohung durch Stürme ist die Art stark gefährdet.
Der Rodrigues-Flughund erreicht ein Gewicht von 350 Gramm und eine Spannweite von 90 cm. Die Ohrenlänge beträgt ca. zwei Zentimeter. Das Fell ist fast überall ziemlich kurz. Die Flughaut zwischen den Oberschenkeln (Interfemoral-Haut) ist im Flug gut sichtbar. Die unbehaarten Ohren sind dreieckig und stumpf zugespitzt. Die Art hat sehr viele farbliche Schattierungen. Am Kopf, Rücken, Brust und Bauch kann das Fell gelblich, orange und rot oder sogar silbrig und schwarz sein. Am Nacken ist es etwas heller. Die Flügel sind dunkelbraun.
Das natürliche Habitat sind die tropischen Küstenwälder. Die Flughunde leben in Gruppen, schlafen tagsüber in großen Gruppen und gehen nachts auf Nahrungssuche. Sie ernähren sich vor allem von Früchten, deren Fruchtfleisch sie auspressen. Zu ihren Nahrungspflanzen gehören Tamarinden, Rosenäpfel, Mangos, Palmfrüchte und Feigen. In der Gefangenschaft sammelt jeweils ein dominantes Männchen einen Harem von bis zu 10 Weibchen um sich, mit denen es rastet und sich paart. Juvenile Männchen sammeln sich zur Rast am Rande der Kolonie.
Die International Union for Conservation of Nature hat die Art aufgrund von Bejagung, Verlust des natürlichen Lebensraumes und Sturmverlusten als „critically endangered“ (vom Aussterben bedroht) eingestuft. Der Bestand in freier Wildbahn liegt bei nur mehr wenigen hundert Exemplaren. Der Durrell Wildlife Conservation Trust hat ein Erhaltungszuchtprogramm eingerichtet. Die Organization for Bat Conservation finanziert ein internationales Projekt.
Es gibt nunmehr Kolonien im Philadelphia Zoo, Prospect Park Zoo, Brookfield Zoo, Oregon Zoo, Moody Gardens Rainforest Pyramid, San Diego Zoo Safari Park, Disney’s Animal Kingdom, Zoo Kopenhagen, Belfast Zoo, Curraghs Wildlife Park, Zoo Dublin und anderen. Die größte Kolonie lebt im Chester Zoo.
Der Rodrigues-Flughund (Pteropus rodricensis) ist eine Art aus der Gattung Eigentliche Flughunde in der Familie der Flughunde. Er ist endemisch auf Rodrigues, einer Insel im Indischen Ozean, die zu Mauritius gehört. Aufgrund des begrenzten Verbreitungsgebiets, Bejagung, Lebensraumverlust und Bedrohung durch Stürme ist die Art stark gefährdet.
The Rodrigues flying fox or Rodrigues fruit bat (Pteropus rodricensis) is a species of bat in the family Pteropodidae, the flying foxes or fruit bats. It is endemic to Rodrigues, an island in the Indian Ocean belonging to Mauritius. Its natural habitat is tropical lowland forests. The bats are sociable, roost in large groups during the day and feed at night, squeezing the juice and flesh out of fruits. They are hunted by humans for food and their numbers have been dwindling, and the International Union for Conservation of Nature has rated the species as being "endangered". In an effort to preserve them from extinction, some bats have been caught and are being bred in various zoos around the world.
It is a sociable species which lives in large groups. It can reach 350 g in weight and has a wingspan of 90 cm. At night, the bats forage in dry woodland for fruit of various trees, such as tamarinds, rose-apples, mangoes, palms, and figs. Like many other fruit bats, they squeeze out the juices and soft pulp, rarely swallowing the harder parts. Observations in captivity show each dominant male gathers a harem of up to ten females, with which he roosts and mates. Subordinate and immature males tend to roost in another part of the camp.
The Rodrigues flying fox is threatened by habitat loss through storm damage and human intervention, and by local hunting for food. Formerly, the daytime roosts or 'camps' of this flying fox often contained more than 500 individuals. The species currently numbers just a few hundred in total in the wild, and the bat is classified as endangered by the IUCN. The Durrell Wildlife Conservation Trust has undertaken a successful captive breeding program, and there are now colonies in several zoos. Due to its imperiled status, it is identified by the Alliance for Zero Extinction as a species in danger of imminent extinction.[2] In 2013, Bat Conservation International listed this species as one of the 35 species of its worldwide priority list of conservation.[3] In 2017, the IUCN determined that this species now has an increasing population trend, so conservation efforts may prove successful for this species.[1]
Colonies are kept in the West Midland Safari Park, the Philadelphia Zoo, the Central Park Zoo, the Brookfield Zoo, the Bronx Zoo, the Oregon Zoo, the Moody Gardens Rainforest Pyramid, the San Diego Zoo Safari Park, Disney's Animal Kingdom, the Copenhagen Zoo, the Belfast Zoo, Curraghs Wildlife Park, Folly Farm Zoo, Dublin Zoo, Paignton Zoo, Royal Burgers' Zoo, Prague Zoo amongst others. The largest captive group is at Chester Zoo.
The Rodrigues flying fox or Rodrigues fruit bat (Pteropus rodricensis) is a species of bat in the family Pteropodidae, the flying foxes or fruit bats. It is endemic to Rodrigues, an island in the Indian Ocean belonging to Mauritius. Its natural habitat is tropical lowland forests. The bats are sociable, roost in large groups during the day and feed at night, squeezing the juice and flesh out of fruits. They are hunted by humans for food and their numbers have been dwindling, and the International Union for Conservation of Nature has rated the species as being "endangered". In an effort to preserve them from extinction, some bats have been caught and are being bred in various zoos around the world.
Pteropus rodricensis es una especie de murciélago frugivoro de gran tamaño que pertenece a la familia Pteropodidae, género Pteropus, las especies de este género son comúnmente conocidas como zorros voladores. Pteropus rodricensis es un endemismo de la Isla Rodrigues situada en el Océano Índico y perteneciente a la República de Mauricio. Su hábitat natural son los bosques tropicales de la región. Es una especie sociable que forma grandes grupos. Alcanza un peso de uno 350 gramos y una envergadura de 90 cm. Se encuentra en grave peligro de extinción.[2]
Datos: Q1091763
Multimedia:
Especies: Pteropus rodricensis
Pteropus rodricensis es una especie de murciélago frugivoro de gran tamaño que pertenece a la familia Pteropodidae, género Pteropus, las especies de este género son comúnmente conocidas como zorros voladores. Pteropus rodricensis es un endemismo de la Isla Rodrigues situada en el Océano Índico y perteneciente a la República de Mauricio. Su hábitat natural son los bosques tropicales de la región. Es una especie sociable que forma grandes grupos. Alcanza un peso de uno 350 gramos y una envergadura de 90 cm. Se encuentra en grave peligro de extinción.
Pteropus rodricensis Pteropus generoko animalia da. Chiropteraren barruko Pteropodidae familian sailkatuta dago.
Pteropus rodricensis Pteropus generoko animalia da. Chiropteraren barruko Pteropodidae familian sailkatuta dago.
Pteropus rodricensis
La roussette de Rodrigues (Pteropus rodricensis) est une espèce gravement menacée d'extinction, de la famille des Ptéropodidés. Elle tire son nom du fait qu'elle vient de l'Île Rodrigues (également connue sous le nom d'Île de Rodrigues), l'une des trois îles de l'archipel des Mascareignes.
En 1976, Gerald Durell a capturé 18 spécimens de roussettes géantes durant sa visite sur l'Île de Rodrigues, dont huit ont été utilisés pour fonder une colonie sur l'Île Maurice, tandis que les dix autres ont été prêtés par le gouvernement de l'Île Maurice à Jersey, pour établir une colonie reproductrice.
Depuis, la colonie de Jersey a vu naître plus de 350 individus, dont environ 200 ont été envoyés à de nombreux zoos dans le monde, dans le but d'établir des colonies satellites.
Le Zoo de Jersey, qui héberge actuellement 70 individus, a connu un tel taux de reproduction que les mâles et les femelles sont aujourd'hui séparés en deux colonies pour limiter l'augmentation de la population.
Cette roussette géante, dont on estime la population vivant à l'état naturel à seulement 350 individus, fait l'objet d'un programme européen d'élevage (EEP) depuis 1996 qui est coordonné par le Zoo de Jersey.
Dans le cadre de ce programme, environ 800 roussettes de Rodrigues vivent actuellement en captivité dans plus d'une trentaine de parcs zoologiques. Il s'agit plus particulièrement de zoos britanniques et américains, mais le Zoo de la Palmyre, en France, abrite également une colonie d'une cinquantaine d'individus.
Pteropus rodricensis
La roussette de Rodrigues (Pteropus rodricensis) est une espèce gravement menacée d'extinction, de la famille des Ptéropodidés. Elle tire son nom du fait qu'elle vient de l'Île Rodrigues (également connue sous le nom d'Île de Rodrigues), l'une des trois îles de l'archipel des Mascareignes.
En 1976, Gerald Durell a capturé 18 spécimens de roussettes géantes durant sa visite sur l'Île de Rodrigues, dont huit ont été utilisés pour fonder une colonie sur l'Île Maurice, tandis que les dix autres ont été prêtés par le gouvernement de l'Île Maurice à Jersey, pour établir une colonie reproductrice.
Depuis, la colonie de Jersey a vu naître plus de 350 individus, dont environ 200 ont été envoyés à de nombreux zoos dans le monde, dans le but d'établir des colonies satellites.
Le Zoo de Jersey, qui héberge actuellement 70 individus, a connu un tel taux de reproduction que les mâles et les femelles sont aujourd'hui séparés en deux colonies pour limiter l'augmentation de la population.
Cette roussette géante, dont on estime la population vivant à l'état naturel à seulement 350 individus, fait l'objet d'un programme européen d'élevage (EEP) depuis 1996 qui est coordonné par le Zoo de Jersey.
Dans le cadre de ce programme, environ 800 roussettes de Rodrigues vivent actuellement en captivité dans plus d'une trentaine de parcs zoologiques. Il s'agit plus particulièrement de zoos britanniques et américains, mais le Zoo de la Palmyre, en France, abrite également une colonie d'une cinquantaine d'individus.
La volpe volante di Rodrigues (Pteropus rodricensis Dobson, 1878)[1][2] è una specie di pipistrello appartenente alla famiglia Pteropodidae endemica di Rodrigues, un'isola nell'Oceano Indiano appartenente a Mauritius.
Si tratta di una specie di medie dimensioni, che può raggiungere i 350 grammi di peso ed un'apertura alare di 90 centimetri. La lunghezza dell'avambraccio è tra i 124,5 e i 127 millimetri, la lunghezza del piede tra 39,5 e 43 millimetri e la lunghezza delle orecchie tra i 21,5 e i 22,5 millimetri.[3]
La pelliccia è piuttosto lunga, setosa e si estende densamente fino agli avambracci e alle caviglie. Le parti dorsali sono marroni scure, le spalle sono arancioni-brunastre brillanti, la testa è bruno-rossastra mentre le parti ventrali sono bruno-nerastre. Il muso è relativamente corto ed affusolato, gli occhi sono grandi. Le orecchie sono corte, parzialmente nascoste nella pelliccia e con una concavità sul margine esterno appena sotto l'estremità appuntita. La tibia è densamente ricoperta di peli nella metà superiore. È privo di coda, mentre l'uropatagio è ridotto ad una sottile membrana lungo la parte interna degli arti inferiori e completamente nascosta dalla pelliccia circostante. Il cranio presenta un rostro accorciato e le orbite piuttosto piccole. Il numero cromosomico è 2n=38.
L'areale di questa specie è ristretto all'Isola di Rodrigues, una delle Isole Mascarene. È vissuto in epoca storica anche sull'Isola di Mauritius e su Round Island. Questi animali prediligono le foreste primarie e secondarie fino a 200 metri di altitudine.
Le volpi volanti di Rodrigues sono una specie sociale che si riunisce spesso in grandi colonie. Gli esemplari osservati in cattività mostrano che queste colonie siano composte da un maschio dominante ed un suo harem di un massimo di dieci femmine, con cui si appollaia e si accoppia tra il denso fogliame degli alberi. I maschi subordinati e/o immaturi tendono ad appollaiarsi ai margini della colonia.
Si tratta di una specie frugivora che si nutre principalmente di notte. La loro dieta è composta principalmente da frutti di vari alberi, tra cui tamarindi, manghi, fichi, guava, papaya ed i frutti dell'albero del pane africano. Come molti altri pipistrelli della frutta, spremono il succo e la polpa morbida del frutto con i denti, ingoiando raramente le parti più dure.
Danno alla luce un piccolo alla volta tra ottobre e dicembre. Giovani dipendenti dalla madre sono stati osservati dalla fine di agosto ai primi giorni di febbraio. Vengono allattati per 10-11 settimane, occasionalmente fino a 6 mesi, e rimangono insieme al genitore per almeno un anno.
In accordo alla suddivisione del genere Pteropus effettuata da Andersen.[4], P. rodricensis è stato inserito nello P. lombocensis species Group, insieme a P. lombocensis stesso e P. molossinus. Tale appartenenza si basa sulle caratteristiche di avere un ripiano basale nei premolari, un rostro del cranio molto accorciato ed il primo incisivo inferiore ridotto.
La volpe volante di Rodrigues è una specie altamente minacciata considerato l'areale ristretto in cui vive, colpito frequentemente da cicloni tropicali e dall'intervento umano, oltre alla caccia per la carne da parte delle popolazioni locali.[1] In passato, i posatoi diurni e d'"accampamento" di questa volpe volante potevano contare più di 500 individui. La specie attualmente conta solo poche centinaia in totale in natura, ed è stata classificata come in pericolo dalla IUCN. Il Durrell Wildlife Conservation Trust ha intrapreso un programma di riproduzione in cattività di successo e ora ci sono diverse colonie di questi pipistrelli in diversi zoo. A causa del suo status in pericolo, è identificato dall’Alliance for Zero Extinction come una specie in pericolo d'estinzione imminente.[5] Nel 2013, la Bat Conservation International ha elencato questa specie come una delle 35 specie della sua lista di conservazione prioritaria mondiale.[6] Nel 2017, la IUCN ha reso noto che i successi dell'allevamento in cattività di questa specie hanno portato ad un aumento demografico di quest'ultima, pertanto gli sforzi di conservazione per questa specie potrebbero salvarla dal pericolo d'estinzione.[7]
Diverse colonie di volpi volanti di Rodrigues sono ospitate in vari zoo di tutto il mondo in veste del loro programma di riproduzione in cattività. Gli zoo che le ospitano sono il West Midland Safari Park, lo zoo di Philadelphia, lo zoo di Central Park, il Prospect Park Zoo, il Brookfield Zoo, lo zoo del Bronx, lo zoo dell'Oregon, il Moody Gardens Rainforest Pyramid, lo Zoo Safari Park di San Diego, il Disney's Animal Kingdom, lo zoo di Copenaghen, lo zoo di Belfast, il Curraghs Wildlife Park, lo zoo Folly Farm, lo zoo di Dublino, lo zoo di Paignton, lo zoo di Londra, il Royal Burgers' Zoo, tra gli altri. Il più grande gruppo in cattività è ospitato allo zoo di Chester.
La volpe volante di Rodrigues (Pteropus rodricensis Dobson, 1878) è una specie di pipistrello appartenente alla famiglia Pteropodidae endemica di Rodrigues, un'isola nell'Oceano Indiano appartenente a Mauritius.
Rodrigesas augļēdājsikspārnis jeb Rodrigesas augļsikspārnis (Pteropus rodricensis) ir augļēdājsikspārņu dzimtas suga, kas dzīvo Rogrigesas salā Indijas okeānā. Tā ir apdraudēta suga, kas apdzīvo ierobežotu teritoriju un ir uzņēmīga pret vides maiņu.
Liela sikspārņu suga, kuras spārnu plētums sasniedz 90 cm. Šādi grāmatā "Sārtie baloži un zeltainie sikspārņi" to apraksta Džeralds Darels:
"Radās iespaids, ka visos mango kokos karājās ērmoti šokolādes brūni un zeltsarkaini augļi, bet, kad sikspārņi sāka žāvāties un staipīties, varēja itin labi atšķirt, ka ādainie, lietussargam līdzīgie spārni ir šokolādes krāsā, turpretī mati, kas klāj ķermeni un galvu, lāsmo no gaiši vizmaini dzeltenas it kā tīra zelta krāsas līdz lapsas kažoka sarkanumam... Galviņas tiem bija apaļas, ar mazām, glītam auštelēm, purniņi īsi un paplati, kas tos darīja mazliet līdzīgus špici šķirnes sunīšiem."
"Muguras tiem bija koši sarkanīgā kastaņu brūnumā, kas pārgāja tīrā zelta krāsā uz pleciem un vēderiņa. Sodrējmelnie spārni bija smalki un mīksti kā vislabākā zamšāda. Mazie, jocīgie apaļie zelta krāsas ģīmīši ar palsi dzeltenīgajām acīm piešķīra dzīvnieciņam ērmotu, miniatūru lidojošu rotaļlāčuku izskatu."
Sastopams Rodrigesas salā Indijas okeāna rietumu daļā. Vēsturiski apdzīvoja Maurīcijas salu un nelielo Raundas saliņu, taču cilvēku darbības rezultātā no turienes izzuda.
Naktsdzīvnieks. Dzīvo kolonijās mežos, pārtiku meklē dažādos augļu kokos, tādos kā tamarindi, mango, palmas, vīģeskoki.
Vēl 20. gadsimta 60. gados Rodrigesā dzīvoja tūkstošiem augļsikspārņu. 70. gados vesela postošu viesuļvētru sērija izpostīja salu un iznīcināja augļu kokus, kuros sikspārņi barojās. Palika vairs tikai četrdesmit īpatņu. Pakāpeniski to skaits palielinājās līdz tūkstotim, taču 1991. gadā kārtējā viesuļvētra iznīcināja astoņdesmit procentus šo dzīvnieku populācijas. Darela savvaļas dzīvnieku aizsardzības trests uzsāka sugas pavairošanu nebrīvē un izaudzēja virs 300 Rodrigesas augļsikspārņu. Kolonijas tiek turētas vairākos Eiropas un ASV zooloģiskajos dārzos. Mūsdienās visā salā ir aizliegts medīt augļēdājsikspārņus.
Rodrigesas augļēdājsikspārnis jeb Rodrigesas augļsikspārnis (Pteropus rodricensis) ir augļēdājsikspārņu dzimtas suga, kas dzīvo Rogrigesas salā Indijas okeānā. Tā ir apdraudēta suga, kas apdzīvo ierobežotu teritoriju un ir uzņēmīga pret vides maiņu.
De rodriguesvleerhond (Pteropus rodricensis) is een vleermuis uit het geslacht Pteropus.
De rodriguesvleerhond heeft een lichaamslengte van 35 cm,[2] een vleugelspanwijdte van gemiddeld 90 centimeter en een gewicht van 250 tot 275 gram. De vlieghuid is bruin. Het dier hangt zich ondersteboven aan zijn haaknagels, zonder daarbij spierarbeid te hoeven verrichten.
's Nachts worden in droge, tropische bossen de vruchten van bomen, zoals tamarindes, mango's, palmen en vijgen gezocht. Ze slikken echter alleen het sap en zacht vruchtvlees door, de harde schillen worden uitgespuwd.
De soort wordt bedreigd door verlies van hun leefgebied, mede door toedoen van de mens en tropische stormen. Voorheen waren er groepen van wel 500 individuen, nu zijn er in het wild nog slechts enkele honderden individuen. Het is een sociale soort die meestal in grote groepen leeft.
De soort komt alleen voor op het eiland Rodrigues in de Indische Oceaan ten oosten van Madagaskar.
Bronnen, noten en/of referentiesRodriguesflyghund[2] (Pteropus rodricensis) (en: Rodrigues flying fox or Rodrigues fruit bat) är en flyghund som är endemisk för ön Rodrigues.
Rodriguesflyghunden har ett vingspann på 50 till 90 centimeter och vikten kan uppgå till mellan 300 och 350 gram. Pälsen är tät och mörkt kastanjebrun, förutom omkring nacken, delar av huvudet och skuldrorna där den är mer gyllenbrun.
Rodriguesflyghunden lever i skogar med fruktbärande träd upp till en höjd på omkring 200 meter över havet. Den var en vanlig art på Rodrigues fram till det tidiga 1900-talet. Fram till 1950-talet rapporterades den fortfarande förekomma i större populationer. Under 1970-talet skedde en stor minskning och 1979 fanns endast omkring 70 djur kvar. Vid 1990-talets början hade beståndet återhämtat sig till omkring 1 000 individer. 2003 uppskattades populationen för arten som helhet uppgå till omkring 4 000 individer. Den är sedan 1996 rödlistad av IUCN som akut hotad. Hot mot arten är habitatförlust genom att de skogar där den lever huggs ned och cykloner. Tidigare var även jakt ett hot mot arten.[1]
Rodriguesflyghunden livnär sig huvudsakligen på frukt och många individer kan samlas i ett och samma träd för att äta av frukten när denna mognar. Den födosöker i skymningen och på natten och för att hitta frukten använder den sitt luktsinne. Den är social, men mellan hanarna finns en rangordnig. Honorna vilar i grupper och en dominant hane finns ofta i närheten av en sådan grupp.
Bredvid frukter ingår flygande insekter i födan. Rodriguesflyghund saknar liksom flera andra flyghundar förmåga till ekolokalisering. Arten hittar sina byten istället med synen. Honor har varje år en kull med en eller sällan två ungar. Könsmognaden infaller efter 1,5 till 2 år.[3]
Wikimedia Commons har media som rör Rodriguesflyghund.
Rodriguesflyghund (Pteropus rodricensis) (en: Rodrigues flying fox or Rodrigues fruit bat) är en flyghund som är endemisk för ön Rodrigues.
Розмах крил: 90 см. Вага 350 гр. Має великі загострені вуха, довгасту морду і великі очі, щоб бачити і полювати в темряві. Забарвлення може бути жовтим, помаранчевим і червоним або сріблястим і чорним.
Країни поширення: острів Родріґес (Маврикій) у південно-західній частині Індійського океану. Живе в мангрових лісах і дощових лісах, де лаштує сідала в деревах або в печерах.
Самиця приносить одне дитинча. Тривалість життя становить близько 8 або 9 років. Через їх розміри, вокалізацію і мобільність, Pteropus rodricensis легко виявити і, отже, їх число часто переоцінене. Вид є сутінковим і найактивніший на заході й сході сонця, коли залишає печери або дерева, щоб знайти їжу. Цей вид полює для нічних комах, використовуючи свої крила, як сіті, щоб залучити видобуток у рот. Цей вид живиться як комахами, так і фруктами. Вживаючи фрукти ці крилани допомагають розсіювати насіння плодових дерев і запилюють багато дерев і чагарників. Зграї зазвичай обирають конкретне місце спочинку, яке вони займають протягом багатьох років, проте, порушення людини і підвищений тиск полювання можуть призвести до того, щоб колонії переїхали в нові місця ночівель.
Цей вид знаходиться під серйозною загрозою зникнення в дикій природі на острові Родріґес в результаті втрати місць проживання, стрільби та полювання на м'ясо. Це, як вважають, було причиною зникнення виду на головному острові Маврикії. Ці кажани також зіштовхуються з серйозними природними загрозами щорічних тропічних циклонів, які здувають тварин у море, де вони вмирають, а також знищують їх місце проживання, позбавляючи їх їжі й даху над головою. Чисельність виду, як і раніше крихке і залежить від заходів по збереженню.
Pteropus rodricensis là một loài động vật có vú trong họ Dơi quạ, bộ Dơi. Loài này được Dobson mô tả năm 1878.[1]
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Bài viết họ Dơi quạ này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Pteropus rodricensis là một loài động vật có vú trong họ Dơi quạ, bộ Dơi. Loài này được Dobson mô tả năm 1878.
로드리게스날여우박쥐 또는 로드리게스과일박쥐(Pteropus rodricensis)는 큰박쥐과에 속하는 박쥐의 일종이다. 인도양에 있는 모리셔스에 속하는 로드리게스 섬의 토착종이다. 자연 서식지는 열대 저지대 숲이다. 군집 생활을 하는 동물로 낮 동안에는 대형 집단을 형성하여 둥지에서 생활하고, 밤에는 과즙을 짜고 과일에서 살을 발라내 먹는다. 사람들이 식용으로 사냥을 하고 개체수가 감소 추세를 보이며, 국제 자연 보전 연맹(IUCN)이 "멸종위급종"으로 지정하고 있다. 절멸을 방지하기 위한 노력으로 일부 박쥐를 포획하여 전 세계 여러 동물원에서 번식을 시키고 있다.
