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The principal natural predators of Perrier's sifakas are fossas (Cryptoprocta ferox), which can travel on land and from tree to tree. Other possible predators include eagles and hawks. Raptors are mainly a danger to young. Humans also prey on sifakas. These sifakas use vocalizations to warn of possible danger.
Known Predators:
Perrier's sifakas have minimal sexual dimorphism, with females slightly larger (average of 4.44 kg) than males (average of 4.22 kg). The average body length is 48.9 cm. They have longer legs and tails than their torso and arms. They have coats of dense, silky, black fur except on their faces and ears which have no fur. Their eyes are small and face forward.
Range mass: 3.7 to 6.0 kg.
Average mass: 4.3 kg.
Average length: 48.9 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: female larger
There are no known Propithecus perrieri in captivity. The longest living Propithecus species in captivity was 36 years old. The closely related, diademed sifakas have the greatest risk of death before the age of 5. After the age of 5 an individual can be expected to live to about 15.
Average lifespan
Status: wild: 15 years.
Perrier's sifakas are eastern Madagascar lemurs. They are found in dry and riparian forests that border rivers in northern Madagascar. The elevation range is 10 to 600 meters with most being found at about 500 meters. The forests that border the rivers are riparian. The canopy is continuous and the understory is open. The riparian forest gives way to dry forests. Dry forests have a low and open canopy with a variety of vines in the understory. Perrier's sifakas will travel over savannahs to go from one forest area to another. Annual rainfall is 125.0 cm with most of it falling between November and April.
Range elevation: 10 to 600 m.
Average elevation: 500 m.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: forest ; rainforest
Other Habitat Features: riparian
Perrier's sifakas are native to and only found on the island of Madagascar. They can be found in the northeastern and northern parts of Madagascar.
Biogeographic Regions: ethiopian (Native )
Other Geographic Terms: island endemic
Perrier's sifakas are primarily folivorous, but they are also include fruit in their diet. They consume a wide variety of plants, leaves, seeds, and flowers. An average of 50% of their diet consists of leaves. These leaves come from a range of plants including Somotrorama species, Pittosporum orchrosiifolium, Sideroxylon species, Diospyros species, Olax species, and Dalbergia species. Their diet consists of 27% flowers of the plants Magifera indica, Sideroxylon, Vonga-vonga, Dalbergia, and Famoha. Fruit makes up about 17% of their diet and comes from the plants Tamarindus indica and Ficus pachyclada. Buds, petioles, and seeds finish off the remainder of their diets. This small portion of their food can come from the plants Scerocaryan and Landolphia. Rarely, but sometimes, they eat dirt.
Plant Foods: leaves; seeds, grains, and nuts; fruit; flowers
Primary Diet: herbivore (Folivore , Frugivore )
Perrier's sifakas may influence vegetation communities through their folivory and may disperse seeds when they eat fruits.
Perrier's sifakas are important members of native ecosystems in Madagascar.
There are no known adverse effects of Perrier's sifakas on humans.
Perrier's sifakas use vocalizations as a form of communication, including warning calls. Gron (2008) describes the sounds as sneeze like. Alloparenting and grooming are common forms of bonding. They use visual cues, such as genital swelling, to communicate sexual readiness. They are also likely to use chemical cues, as do other mammals.
Communication Channels: visual ; tactile ; acoustic ; chemical
Perception Channels: visual ; tactile ; acoustic ; chemical
Perrier's sifakas are considered critically endangered by the IUCN. All Propithecus species are considered endangered by the U.S. Fish and Wildlife Service. Human destruction of the habitats of Propithecus perrieri represents their biggest threat to survival. Humans use slash-and-burn agriculture, logging, mine for gemstones, and hunt these sifakas. Another natural cause of sifaka death and destruction of habitat are wildfires.
US Federal List: endangered
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: critically endangered
Perrier's sifaka mating habits have not been studied. In their close relative, Propithecus diadema, several different mating systems occur. Depending on group size, mating systems can be monogamous, polyandrous, polgynous, or polygnandrous.
Reproductive behavior of Propithecus perrieri has not been well-studied. Perrier's sifakas were once considered a subspecies of Propithecus diadema, diademed sifakas, which has been studied more thoroughly. In diademed sifakas, multiple mating strategies are present and they can change from season to season depending on group size and structure. Females are in estrus for a short period of time, about 10 hours. Both males and females show genital swelling at times of fertility. Females become sexually mature at about 4 years old and males at 5. Mating occurs in the summer and the birth of one offspring per female occurs 5 to 6 months later, typically in the austral winter month of June. Infanticide by both males and females has been observed in some groups of diademed sifakas. This can be attributed to the arrival of new males in the group and females having a short estrus time and long gestation period.
Breeding interval: Breeding interval is not known in Perrier's sifakas, but diademed sifakas breed about every year and a half.
Breeding season: In diademed sifakas, matings occur in the summer, December and January.
Average number of offspring: 4.36.
Range gestation period: 5 to 6 months.
Average gestation period: 6 months.
Average weaning age: 5 months.
Average time to independence: 2 years.
Average age at sexual or reproductive maturity (female): 4 years.
Average age at sexual or reproductive maturity (male): 5 years.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
There are no published reports of parental investment in Proptihecus perrieri. In the close relative, Propithecus diadema, mothers are the primary caregivers of their offspring. Very little alloparenting takes places in diademed sifaka groups. During the first weeks after birth the baby clings to the belly of its mother. At 3 to 4 weeks, offspring show more independence. There is contact with others in the group, play is often limited to other juveniles, but grooming is done by all. Around this time the baby will ride on the mother's back instead of the belly. Though the offspring are weaned around 5 months they stay under the mothers watch until about 2 years of age.
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); post-independence association with parents; extended period of juvenile learning
With an EDGE score (Evolutionarily Distinct and Globally Endangered scores combined) of 5.31, the peculiar Perrier’s sifaka (Propithecus perrieri) is considered one of the 25 most endangered primates in the world.
Perrier’s sifakas are endemic to Madagascar and can be found in the northeastern parts, mainly on the Analamerana Special Reserve and some forest fragments to the west.
The thick, silky coat of Perrier’s sifaka is black, covering its entire body except for the face and ears. Females are slightly larger than males, and weight ranges between 3.7 to 6 kilograms.
During the dry season Perrier’s sifakas mainly eat leaves and flowers, but during the wet season they feed more on fruits and seeds.
Unlike most other species, Perrier’s sifakas have groups of unbiased sex dispersal of between 2 and 6 individuals, although societies seems to be mainly matriarchal, with females having feeding priority.
Perrier’s sifakas communicate using vocalisations, which includes warning calls who some describe as a sneeze-like sound. Grooming has also been observed.
The Perrier’s sifaka is listed as Critically Endangered on the IUCN Red List and numbers continue to decline. The number of mature adults is estimated to be less than 250 individuals – since 1985 an estimated third of the rainforest has disappeared. The decline in numbers is mainly due to habitat destruction. Hunting and predation from fossa may also have a negative impact on lemur population.
Ar sifaka Perrier[1] a zo ur primat, Propithecus perrieri an anv skiantel anezhañ. E-pad pell amzer e voe sellet outañ evel un isspesad (Propithecus diadema perrieri) eus ar sifaka talgenet (Propithecus diadema).
Dougen a ra anv al louzawour gall Henri Perrier de La Bâthie (1873-1958).
Tiriad Propithecus perrieri e ruz. Brosezat eo al loen e hanternoz Madagaskar.
Ar sifaka Perrier a zo ur primat, Propithecus perrieri an anv skiantel anezhañ. E-pad pell amzer e voe sellet outañ evel un isspesad (Propithecus diadema perrieri) eus ar sifaka talgenet (Propithecus diadema).
Dougen a ra anv al louzawour gall Henri Perrier de La Bâthie (1873-1958).
El sifaca de Perrier (Propithecus perrieri) és un sifaca que, com tots els lèmurs, és endèmic de Madagascar. Mesura 85-92 cm de llargada, dels quals 42-46 cm pertanyen a la cua.[1] El sifaca de Perrier té un àmbit de distribució geogràfica molt limitat al nord-est de Madagascar, situat entre el riu Irodo al nord i el riu Lokia al sud.[1] Viu en boscos secs caducifolis i boscos semihumits.[1]
Té el pelatge gairebé totalment negre[1] i viu en grups d'entre dos i sis individus.[1] La seva dieta inclou fulles, fruits immadurs, els pecíols de les fulles, brots joves i flors.[1] Se'l considera un dels 25 primats més amenaçats del món.[2]
El sifaca de Perrier (Propithecus perrieri) és un sifaca que, com tots els lèmurs, és endèmic de Madagascar. Mesura 85-92 cm de llargada, dels quals 42-46 cm pertanyen a la cua. El sifaca de Perrier té un àmbit de distribució geogràfica molt limitat al nord-est de Madagascar, situat entre el riu Irodo al nord i el riu Lokia al sud. Viu en boscos secs caducifolis i boscos semihumits.
Té el pelatge gairebé totalment negre i viu en grups d'entre dos i sis individus. La seva dieta inclou fulles, fruits immadurs, els pecíols de les fulles, brots joves i flors. Se'l considera un dels 25 primats més amenaçats del món.
Sifaka Perriersův (Propithecus perrieri) je jedním z největších a nejvzácnějších lemurů, je ohrožen vyhynutím. Není nikde chován v zajetí a je nejméně prozkoumaným druhem rodu sifaka. Vyskytuje se pouze na malém území v severozápadním cípu Madagaskaru v rezervacích Analamerana a Ankarana a v přilehlých fragmentech suchého a ustupujícího lužního lesa v nadmořské výšce do 600 m. Žije v lesích s propojenými korunami stromů a množstvím dlouhých lián.
Až do nedávná byl sifaka Perriersův uznáván jako poddruh sifaky velkého (Propithecus diadema), ale po prozkoumání fylogetických vztahů a morfologických i genetických důkazů byl povýšen na samostatný druh.[2][3]
Rozdíl mezi samci a samicemi je na pohled téměř neznatelný. Mají černou, hustou a jemnou srst po celém těle, jen jejich tváře i skryté uši jsou holé. Samice bývají o něco těžší, váží v průměru 4,5 kg a samci 4,2 kg. Průměrná délka těla je 46 cm a ocasu 43 cm, silné nohy jsou delší než trup i paže. Malé oranžově červené oči mají posazeny vpředu obličeje.
Život sifaky Perriersova nebyl podrobně prozkoumán a proto část údajů o jeho chování a rozmnožování je uvedena podle sifaky velkého, za jehož poddruh byl dříve považován.[2][3][4]
Jsou to denní zvířata, která žijí ve skupinách o dvou až šesti jedincích. Vytvářejí si území (o velikosti do 30 hektarů) která se nepřekrývají a proto mezi tlupami nedochází ke vzájemné agresi, velikost areálu odvisí od úživnosti lesa. Žijí především na stromech, po kterých se pohybují přískoky ve vzpřímené poloze, tzv. lpěním. Po silných vodorovných větvích a stejně i po zemi se při cestováním k řece za vodou nebo při přechodech vymýcených území se pohybují po zadních končetinách.
Hlasem se příliš neprojevují, jen v případě nebezpečí vydávají silnější syčivé zvuky. Při hledání potravy udržuje skupina mezi sebou občasný kontakt tichým voláním, na krátké vzdálenosti spolu komunikují gesty a chemicky.
Strava těchto vegetariánů se skládá hlavně z různých listů (asi 50 %), plodů a květů. V období sucha slézají ze stromů a pijí vodu, potřebné minerální látky si doplňují lízáním hlíny.[2][3][4]
Ve vícečlenné tlupě se páří jen vedoucí samec a vedoucí samice. V letním období dochází u samic ke krátkodobé ovulaci (asi jen 10 hodin), která je oznamována otokem genitálií. Po pěti až šesti měsících březosti se obvykle v červnu nebo červenci rodí jeden potomek. Po porodu je mládě zavěšeno na břiše matky, za tři až čtyři týdny se již samo pohybuje a vozí se matce na zádech a ostatní členové skupiny ho opatrují. Kojeno je asi pět měsíců, matka o něj pečuje do stáří dvou let. Pohlavní dospělosti dosahují samice ve čtyřech a samci v pěti létech, jedinci se v přírodě dožívají průměrného věku 15 let.[2][3][4]
Největším přirozeným predátorem jsou fosy, pro mláďata také orli a jestřábi. Nebezpeční jsou pro ně i místní obyvatelé, kteří je loví pro maso. Velmi zranitelní jsou při pohybu po zemi přes vymýcená území při cestě za vodou nebo potravou, tehdy se stávají kořisti zdivočelých psů.
Druh je nejvíce je ohrožen ztrátou životního prostředí. Na územích po kterých se sifaka Perriersův pohybuje jsou lesy velmi ničeny, jsou vypalovány a přeměňovány na pole a pastviny pro dobytek nebo mýceny pro dřevo na topení, pro stavebnictví i výrobu dřevěného uhlí.
Sifaka Perriersův je silně ohroženým druhem, ve volné přírodě žije asi jen 500 jedinců a z toho je asi 125 dospělců, tento počet má i ve výhledu klesající trend. Takové malé populaci hrozí velké riziko ze ztráty genetické variability, takže dlouhodobá životaschopnost tohoto druhu je diskutabilní. Je proto Mezinárodním svazem ochrany přírody (IUCN) hodnocen jako kriticky ohrožený druh (CR) a byl zařazen do přílohy č. I CITES.[2][3][5]
Obrázky, zvuky či videa k tématu sifaka Perriersův ve Wikimedia Commons
Sifaka Perriersův (Propithecus perrieri) je jedním z největších a nejvzácnějších lemurů, je ohrožen vyhynutím. Není nikde chován v zajetí a je nejméně prozkoumaným druhem rodu sifaka. Vyskytuje se pouze na malém území v severozápadním cípu Madagaskaru v rezervacích Analamerana a Ankarana a v přilehlých fragmentech suchého a ustupujícího lužního lesa v nadmořské výšce do 600 m. Žije v lesích s propojenými korunami stromů a množstvím dlouhých lián.
Až do nedávná byl sifaka Perriersův uznáván jako poddruh sifaky velkého (Propithecus diadema), ale po prozkoumání fylogetických vztahů a morfologických i genetických důkazů byl povýšen na samostatný druh.
Der Perrier-Sifaka (Propithecus perrieri) ist eine Primatenart aus der Familie der Indriartigen innerhalb der Lemuren. Bis vor kurzem galt er als Unterart des Diademsifakas.
Perrier-Sifakas erreichen eine Kopfrumpflänge von 43 bis 47 Zentimetern, eine Schwanzlänge von 42 bis 46 Zentimetern und ein Gewicht von 3,7 bis 5 Kilogramm, zählen also zu den mittelgroßen Sifakaarten. Ihr dichtes Fell ist einheitlich schwarz gefärbt, manchmal sind die Brust und der Bauch leicht rötlichbraun. Das Gesicht ist unbehaart und ebenfalls schwarz, die Augen sind orangerot, die kleinen Ohren teilweise im Fell verborgen.
Perrier-Sifakas kommen wie alle Lemuren nur auf Madagaskar vor. Sie haben das kleinste Verbreitungsgebiet aller Sifakas und bewohnen nur ein kleines Gebiet an der Nordspitze ihrer Heimatinsel zwischen den Flüssen Irodo und Lokia. Ihr Lebensraum sind trockene Wälder und sie sind bis in 400 Meter Seehöhe anzutreffen.
Diese Primaten sind tagaktiv. Sie halten sich meist auf den Bäumen auf, wo sie sich senkrecht kletternd und springend fortbewegen, kommen aber manchmal auf den Boden, um Lücken zwischen den Bäumen zu überqueren oder um zu trinken. Sie leben in kleinen Gruppen von zwei bis sechs Tieren, die sich aus einem oder mehreren Männchen, einem oder mehreren Weibchen und den gemeinsamen Jungtieren zusammensetzen. Sie bewohnen feste Territorien von rund 30 Hektar Größe. Ihre Nahrung besteht aus Blättern, unreifen Früchten, Knospen und Blüten. Im Juni oder Juli bringt das Weibchen meist ein einzelnes Jungtier zur Welt.
Zu den natürlichen Feinden der Perrier-Sifakas zählt die Fossa, die im Verbreitungsgebiet dieses Primaten relativ häufig ist. Die weitaus größere Bedrohung geht aber vom Menschen aus. Durch Brandrodungen und Abholzungen wird ihr Lebensraum verkleinert, hinzu kommt die Bejagung. Ihr gesamtes Verbreitungsgebiet umfasst weniger als 400 km², und die Gesamtpopulation wird von der IUCN auf weniger als 250 ausgewachsene Tiere geschätzt. Darum gilt die Art als „vom Aussterben bedroht“ (critically endangered).
Der Perrier-Sifaka (Propithecus perrieri) ist eine Primatenart aus der Familie der Indriartigen innerhalb der Lemuren. Bis vor kurzem galt er als Unterart des Diademsifakas.
Perrier's sifaka (Propithecus perrieri) is a lemur endemic to Madagascar. It was formerly considered to be a subspecies of diademed sifaka[4] It has a very small range in northeastern Madagascar where its habitat is dry deciduous or semihumid forest. Part of its range is in protected areas. It is an almost entirely black sifaka and measures about 90 cm (35 in), half of which is a bushy tail. Females are slightly larger than males.
It moves in small family groups through the canopy feeding on fruit, leaves, flowers, buds, and seeds. Groups have territories around one hectare and vocalise with each other. The main threats faced by this sifaka are habitat destruction and fragmentation due to slash-and-burn agriculture, charcoal gathering, and logging. The International Union for Conservation of Nature has rated its conservation status as "critically endangered".[5]
It has a length of 85 to 92 cm, of which 42–46 cm are tail.[6] Its pelage is almost entirely black,[6] covering everywhere on its body except for the face and ears. It has small, forward-facing eyes. The species has masses ranging from 3.7 to 6.0 kg. Minimal sexual dimorphism is seen, but females are slightly larger in weight on average.[7]
Perrier's sifaka has a very limited range in northeastern Madagascar between the Irodo River to the north and the Lokia River to the south.[6] The species' geographic range is concentrated on the Analamerana Special Reserve managed by Madagascar National Parks and in the Andrafiamena Protected Area managed by the NGO Fanamby.[8] Its presence in the Ankarana National Park has been reported a few decades ago, but could not be confirmed in the last decade.[8]
Its habitat consists of dry deciduous and semihumid forest.[6] Groups of this species have a home range around a hectare.
The hypothesis that northern sifaka species had their distribution contract is supported by phylogeographic, genetic, and fossil data.[9] In contrast to the other sifaka species, P. tattersalli and P. perrieri have a disjunct and restricted distribution in the northern part of Madagascar, far removed from the northern limit of their sister species. (Supplementary figure 1 in Salmona et al. 2017[9]) In addition, bones attributed to P. cf. verreauxi (i.e. western sifaka) and P. cf diadema (i.e. eastern sifaka) were found in Ankarana (Figure 1 in Salmona et al., 2017,[9] Jungers et al. 1995) and bones of P. cf diadema were reported at Andavakoera (Montagne des Français, Figure 1 in Salmona et al., 2017;[9] Godfrey et al. 1996). Although these sifaka subfossils were not radiocarbon dated, they suggest that the paleodistributions of both sifaka species were much wider than today and possibly overlapping.[9]
Using population genetic analyses, Salmona et al. 2017[9] inferred the demographic history of P.perrieri. Their analyses show that P. perrieri underwent a major demographic decline, which most likely occurred after the mid-Holocene transition (in the last 5,000 years). While mid-Holocene climate change probably triggered major demographic changes in northern lemur species range and connectivity, human settlements that expanded over the last four millennia in northern Madagascar likely played a role in the loss and fragmentation of the forest cover.[9]
The diet of Perrier's sifaka resembles that of other sifakas, consisting of fruit, leaves, flowers, buds, petioles, and seeds. Sifakas are naturally suited for this herbivorous diet because they have long gastrointestinal tracts and enlarged ceca.[10] Groups of sifaka do not show any aggression towards other groups when feeding, let alone come into contact with each other.[11] Sifakas in general show seasonal variation in diet. During the wet season, Perrier's sifakas contribute most of their feeding time, about 70 to 90%, to fruits and seeds, but in the dry season, most of the species' feeding time is spent on leaves and flowers.[10]
Perrier's sifakas use vocalizations to communicate including warning calls and have even been observed to make a sound described as sneezing.[7]
Sifakas have groups of two to six individuals.[6] Dispersal of sex is unbiased, which is uncommon among most species. Aggression between groups is extremely low, as is the overall encounter rates between groups. Society is largely matriarchal and females have feeding priority.[10] Mating habits have not been thoroughly studied yet.[7]
The reproductive cycle is bound to the season and sifakas reproduce either every year or every two years. Infants have a slow growth rate given the large abundance of food on Madagascar, but dental development is just the opposite. A hypothesis has been put forth that this is to reduce the dependency period of the offspring and increase the chance of survival for the mother, which does not have to expend energy and time to raise her offspring. Most females do not place much effort into individual offspring, as half of sifaka infants die before the age of one.[10] Infants become independent at the age of two and reach sexual maturity at the age of four for females and five for males. Males use genital swelling to communicate that they are ready for sex.[7]
Perrier's sifaka is one of the most endangered primates due to the limited distribution and low population density.[8][12] It is listed in CITES Appendix I.[2] A recent conservation plan for Perrier's sifaka has been developed following the International Union for Conservation of Nature Species Survival Commission (SSC) Lemur Red List reassessment meeting in Antananarivo in 2012.[13][14] While selective logging still seems to be one of the main threads in Analamerana special reserve, deforestation for slash and burn agriculture and for charcoal production is predominant in Andrafiamena-Andavakoera protected area. Given the small total population size, persistence of local threats, and the paucity of wildlife patrols, an appraisal of its population levels and an effective control of habitat loss are urgently needed. This requires a unified regional management plan, since the species’ natural range and potential areas of migration/seasonal presence overlap with three areas of different protective status, independently managed by Madagascar National Parks (Analamerana and Ankarana) and Fanamby (Andrafiamena). Given the diverse group of stakeholders involved (e.g. park services, ministries, universities, tour operators, local businesses, farmers, etc.), P. perrieri conservation requires a clearly defined institution, committed to leading its conservation plan with incentives for inclusive action that take advantage of the strengths of the different participants .
{{cite web}}: CS1 maint: url-status (link) Perrier's sifaka (Propithecus perrieri) is a lemur endemic to Madagascar. It was formerly considered to be a subspecies of diademed sifaka It has a very small range in northeastern Madagascar where its habitat is dry deciduous or semihumid forest. Part of its range is in protected areas. It is an almost entirely black sifaka and measures about 90 cm (35 in), half of which is a bushy tail. Females are slightly larger than males.
It moves in small family groups through the canopy feeding on fruit, leaves, flowers, buds, and seeds. Groups have territories around one hectare and vocalise with each other. The main threats faced by this sifaka are habitat destruction and fragmentation due to slash-and-burn agriculture, charcoal gathering, and logging. The International Union for Conservation of Nature has rated its conservation status as "critically endangered".
El sifaca de Perrier (Propithecus perrieri) es una especie de lémur, como todas, endémica de Madagascar.
Su cuerpo mide 85 a 92 centímetros, de los cuales 42 a 46 son cola.[2] Tiene un área de distribución reducida en el noreste de la isla, entre los ríos Irodo por el norte y Lokia por el sur.[2] Vive en bosques secos caducifolios y semihúmedos.[2]
Su pelaje es casi enteramente negro.[2] Se agrupa en comunidades de 2 a 6 individuos.[2] Su dieta incluye hojas, fruta inmadura, peciolos, brotes y flores.[2] Se encuentra en peligro de extinción,[1] de hecho es parte de la lista de las 25 especies de primates más amenazadas del mundo.[3]
El sifaca de Perrier (Propithecus perrieri) es una especie de lémur, como todas, endémica de Madagascar.
Su cuerpo mide 85 a 92 centímetros, de los cuales 42 a 46 son cola. Tiene un área de distribución reducida en el noreste de la isla, entre los ríos Irodo por el norte y Lokia por el sur. Vive en bosques secos caducifolios y semihúmedos.
Su pelaje es casi enteramente negro. Se agrupa en comunidades de 2 a 6 individuos. Su dieta incluye hojas, fruta inmadura, peciolos, brotes y flores. Se encuentra en peligro de extinción, de hecho es parte de la lista de las 25 especies de primates más amenazadas del mundo.
Propithecus perrieri
Le Propithèque de Perrier (Propithecus perrieri) est un lémurien de la famille des indridés.
Le propithèque de Perrier vit dans quelques fragments des forêts sèches caducifoliées du Nord de Madagascar.
Propithecus perrieri
Le Propithèque de Perrier (Propithecus perrieri) est un lémurien de la famille des indridés.
Sifaka Perrier (Propithecus perrieri) adalah seekor lemur endemik Madagaskar. Hewan tersebut dulunya dianggap sebagai subspesies diademed sifaka[1]
Sifaka Perrier (Propithecus perrieri) adalah seekor lemur endemik Madagaskar. Hewan tersebut dulunya dianggap sebagai subspesies diademed sifaka
Il sifaka di Perrier (Propithecus perrieri Lavauden, 1931) è un lemure appartenente alla famiglia Indriidae, endemico del Madagascar.
L'epiteto specifico è un omaggio al naturalista francese Perrier de la Bâthie (1873–1958).
Il corpo è lungo da 42 a 47 cm, a cui si aggiungono 42–45 cm di coda. Peso medio: 5 kg.
La caratteristica distintiva, che lo differenzia dalle altre specie di Propithecus, è il colore nero della pelliccia.
La faccia è glabra e di colore grigio ardesia.
Gli occhi sono di un rosso-arancio brillante.
Sono animali diurni e arboricoli. Sono abili arrampicatori e potenti saltatori, capaci di compiere notevoli balzi da un albero all'altro.
Sono animali sociali, organizzati in piccoli gruppi che contano da 2 a 6 esemplari.
Sono erbivori, si nutrono di foglie, fiori e frutti.
Questa specie popola alcune ristrette aree di foresta pluviale situate nel Madagascar settentrionale, nella zona compresa tra il fiume Loky (a sud) e il fiume Irodo (a nord), in cui ricadono i massicci di Analamerana e di Andrafiamena e le propaggini nord-orientali del massiccio di Ankarana.
In passato considerata una sottospecie di Propithecus diadema (P. diadema subsp. perrieri) è attualmente considerato una specie a sé stante.
In base ai criteri della IUCN red list la specie, per la ristrettezza del suo areale e la esiguità della popolazione (stimata in circa 2.000 esemplari), è considerata in pericolo critico di estinzione.
Parte dell'areale ricade all'interno della Riserva speciale di Analamerana e della Riserva speciale dell'Ankarana.
Il sifaka di Perrier (Propithecus perrieri Lavauden, 1931) è un lemure appartenente alla famiglia Indriidae, endemico del Madagascar.
L'epiteto specifico è un omaggio al naturalista francese Perrier de la Bâthie (1873–1958).
De Perriers sifaka (Propithecus perrieri) is een zoogdier uit de familie van de indriachtigen (Indriidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Lavauden in 1931.
De soort komt voor in het oosten van Madagaskar.
Bronnen, noten en/of referentiesDe Perriers sifaka (Propithecus perrieri) is een zoogdier uit de familie van de indriachtigen (Indriidae). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Lavauden in 1931.
Propithecus perrieri är en primat i släktet sifakor som förekommer på norra Madagaskar. Den listades tidigare som underart till diademsifaka och godkänns nu oftast som självständig art.[2][1]
Denna primat når en kroppslängd (huvud och bål) av 43 till 47 cm och en svanslängd av 42 till 46 cm. Vikten varierar mellan 3,7 och 5 kg. Med undantag av den mörkbruna framsidan är pälsen helt svart. Ansiktet är nästan naken och likaså svart eller mörkgrå. Liksom andra sifakor har Propithecus perrieri orangeröda ögon.[3]
Arten lever i ett kulligt skogsområde som är ungefär 300 km² stort. Några individer påträffades utanför skogen i mindre trädansamlingar. Tidigare fanns den även i ett annat sammanhängande skogsområde men där är arten troligen utdöd.[1]
Hos Propithecus perrieri förekommer flockar med upp till 6 medlemmar. I gruppen ingår ett dominant föräldrapar som föder ungar, ibland andra vuxna individer samt ungdjur från olika kullar. Gruppens revir är cirka 30 hektar stort. De äter blad, omogna frukter, blommor och andra växtdelar. I juni eller juli föder honan ett enda ungdjur.[3]
Individerna faller ofta offer för fossan (Cryptoprocta ferox) eller för lösgående tamhundar när de vandrar över öppen terräng till andra trädansamlingar.[3] Dessutom hotas arten av svedjebruk och av skogsavverkningar för produktionen av träkol och för gruvdrift. Propithecus perrieri jagas även av människor. IUCN uppskattar att det finns mindre än 250 vuxna individer och listar arten som akut hotad (CR).[1]
Wikimedia Commons har media som rör Propithecus perrieri.
Wikispecies har information om Propithecus perrieri.
Propithecus perrieri är en primat i släktet sifakor som förekommer på norra Madagaskar. Den listades tidigare som underart till diademsifaka och godkänns nu oftast som självständig art.
Propithecus perrieri là một loài động vật có vú trong họ Indridae, bộ Linh trưởng. Loài này được Lavauden mô tả năm 1931.[2]
Bài viết liên quan đến Bộ Linh trưởng này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Propithecus perrieri là một loài động vật có vú trong họ Indridae, bộ Linh trưởng. Loài này được Lavauden mô tả năm 1931.
페리에시파카(Propithecus perrieri)는 인드리과에 속하는 영장류의 일종이다. 원산지는 마다가스카르다. 키는 85~92 cm이고, 꼬리 길이는 42~46 cm 정도이다.[3] 페리에시파카는 북쪽으로는 이로도 강과 남쪽으로는 로키아 강 사이의 마다가스카르의 북동부 지역에 제한적으로 서식한다.[3] 건조한 낙엽성 숲과 어느 정도 습기가 있는 숲에서 산다.[3]
몸의 털은 거의 완전한 검은색이다.[3] 2~6마리씩 군집 생활을 한다.[3] 이들의 먹이는 잎과 덜 익은 과일, 잎자루, 어린 새싹과 꽃들이다.[3] 세계에서 가장 멸종 위험이 높은 25종의 영장류 중의 하나이다.[4]
