The role of black squirrel monkeys in their ecosystems has not been fully described. It is likely that they disperse some seeds through their frugivory. They may limit populations of some insects and small vertebrates. In addition, they provide food for a variety of predators, although the significance of this species of monkey in the diet of any predatory species is not known.
Black squirrel monkeys are sold as pets and used in various types of research, especially biomedical research, because they are small and easy to handle. While international trade in squirrel monkeys is regulated, these animals are locally sold as food and pets.
Positive Impacts: pet trade ; food ; research and education
Because they are relatively small in size, black squirrel monkeys are vulnerable to many predators. Their most common predators are raptors, large snakes, and felids. Black squirrel monkeys my have some protection from predation provided by their group structure; their social nature means that more animals are on alert for potential danger and groups may be able to mob some predators.
Known Predators:
Black squirrel monkeys grow to an average length of 31.75 cm, with the tail adding an additional 40.64 cm on average to the total length. The short and thick coat is black to greyish in color, with yellow or reddish legs. The skin around the lips and nostrils is black and hairless. Most squirrel monkeys are white around the eyes and neck. The underparts are shades of yellow and white. They weigh between 0.68 and 1.13 kg. When resting, the tail often curls over one shoulder. Like other primates, squirrel monkeys have sharp nails. Squirrel monkeys are sexually dimorphic, with males being larger than females.
Range mass: 0.68 to 1.13 kg.
Average length: 31.75 cm.
Sexual Dimorphism: male larger
Other Physical Features: endothermic ; bilateral symmetry
There are no negative impacts of S. vanzolinii on humans as its range is very limited and occurs within a protected reserve.
Black squirrel monkeys are easily maintained in captivity. Threats to this species include habitat destruction, capture for the pet trade or medicinal purposes, and illegal hunting. The continued existence of black squirrel monkeys is threatened because of their extremely localized range. Habitat loss due to logging or other practices severely threatens S. vanzolinii. Hybridization with other species of Saimiri may also be a risk, as other species in the genus occupy the same habitat.
US Federal List: no special status
CITES: appendix ii
State of Michigan List: no special status
IUCN Red List of Threatened Species: vulnerable
Members of the genus Saimiri live approximately 15 years, but have been known to live up to 30 years in captivity.
Range lifespan
Status: captivity: 30 (high) years.
Average lifespan
Status: wild: 15 years.
There are no recognized differences between the habitat preferences, behaviors, ecology, and social habits of black squirrel monkeys and their close relatives, common squirrel monkeys (Saimiri sciureus), which are the most intensively studied species of Saimiri. Squirrel monkeys occur mainly in tropical lowland rainforests, at elevations between 23 and 80 m. They are habitat generalists and can survive in various forest habitats. Squirrel monkeys can be found in undisturbed tropical forests, edge forests, primary evergreen forests, as well as logged tropical forests.
Range elevation: 23 to 80 m.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: rainforest
Black squirrel monkeys (Saimiri vanzolinii) are native to the tropical rainforests of South America; however, the geographic range of this species is the smallest of all South American primates. These animals live only in northern Brazil in a small section of Amazonian floodplain at the convergence of the Amazon and Japura rivers. Their range reaches as far west as the Paraná Auatí-Paraná and is situated in a corner of Brazil’s Mamirauá Sustainable Development Reserve. Excluding swamp areas scattered throughout the Reserve, the range of black squirrel monkeys is no greater than 533 km^2.
Biogeographic Regions: neotropical (Native )
Black squirrel monkeys are omnivorous. Whether they favor fruit or insects in their diet depends upon the abundance of each during various seasons. If both resources are scarce, black squirrel monkeys will extend their diet to include small vertebrates, flowers, seeds, leaves, and nectar. Squirrel monkeys favor small, berry-like fruits growing in the forest’s lower and middle canopies. They prefer stationary insects resting on plants to those they must catch while in motion. To catch insects, squirrel monkeys search leaf surfaces and uncurl dead plants, preferring grasshoppers and caterpillars to other insects. Squirrel monkeys will consume small vertebrates such as bats and small birds. They are also known to eat eggs.
According to Lima and Ferrari’s (2003) research monitoring the feeding behavior of the closely related species, S. sciureus in Brazil, their diet consists of 55.1% reproductive plant parts and 44.9% arthropods. These authors suggest that squirrel monkeys prefer insects but consume fruits as well.
Squirrel monkeys spend the early portion of the day scavenging for fruit and seeds. The remainder of their day centers around hunting for insects.
Animal Foods: mammals; eggs; insects; terrestrial non-insect arthropods
Plant Foods: leaves; seeds, grains, and nuts; fruit; nectar; flowers
Foraging Behavior: stores or caches food
Primary Diet: omnivore
Black squirrel monkeys are generally quiet, but produce a shrill cry when alarmed. Females make a “chucking” sound to communicate with other members of the group while feeding in dense areas of the forest. They have also been seen spreading urine on their hands and feet, which emits a strong scent for wandering individuals to find their way back to the group (Bristol Zoo). The urine may also provide information on the reproductive status of an individual. As in all primates, grooming and tactile communication is common. In addition, facial expressions and body postures are likely to be of some importance.
Communication Channels: visual ; tactile ; acoustic ; chemical
Other Communication Modes: scent marks
Perception Channels: visual ; tactile ; acoustic ; chemical
Data on mating in most species within the genus Saimiri are lacking. However, S. sciureus has been fairly well studied. It is reported to breed polygynandrously, and other members of the genus are expected to be similar. Members of the genus Saimiri typically form large mixed-sex groups. Males fatten and become reproductively acting only during the mating season. During this time, they compete for access to females. Physical altercations may result in serious wounds. Subordinate and subadult males may be marginalized in these competitions, preventing them from access to mates.
Females do not apparently descriminate between mates, and may accept matings with multiple males. Females do not have external signs of estrus, although estrus females may produce chemicals in their urine to which males respond. In S. sciureus, females are reported to show passive tolerance of males, and may even initiate some mating mounts. Males may also advertize their breeding condition to females through chemicals in their urine.
Mating System: polygynandrous (promiscuous)
Squirrel monkeys breed seasonally, mating from September to November. Estrus in Saimiri is short-lived, lasting only 12 to 36 hours. If pregnancy does not occur, the estrus cycle will last betweeen 6 and 25 days. Gestation takes between 140 and 170 days, and the birth season coincides with the greatest period of rainfall and food availability. Females typically give birth to a single infant between February and April.
Females reach sexual maturity at about 2.5 years of age, but males may mature later, becoming reproductive between 2.5 and 4 years of age.
Withing Saimiri, newborns are reported to weigh about 100 g. For the first few weeks of life, a young squirrel monkey clings to its mother's back. The duration of lactation is probably around 6 months. These animals grow quickly, and are independent by the age of one year. A female may produce another offspring after a year.
Breeding interval: Breeding occurs once per year.
Breeding season: Breeding occurs between September and November.
Average number of offspring: 1.
Range gestation period: 140 to 170 days.
Average weaning age: 6 months.
Average time to independence: 1 years.
Average age at sexual or reproductive maturity (female): 2.5 years.
Range age at sexual or reproductive maturity (male): 2.5 to 4 years.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; fertilization ; viviparous
Male squirrel monkeys generally do not help in raising young. Mothers nurse their infants for approximately 6 months. During this time the mother provides the infant with grooming, socialization, and teaches it valuable life skills.
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female); pre-independence (Provisioning: Female)
La mona esquirol amazònica (Saimiri vanzolinii) és una espècie de mico de la família dels cèbids que viu al Brasil.
Der Dunkle Totenkopfaffe oder Vanzolini-Totenkopfaffe (Saimiri vanzolinii) ist eine Primatenart aus der Gruppe der Neuweltaffen. Er ist eng mit dem Bolivianischen Totenkopfaffen verwandt und wird manchmal als dessen Unterart angesehen. Das Art-Epitheton vanzolinii ist ein Dedikationsname zu Ehren des brasilianischen Zoologen Paulo Vanzolini.
Dunkle Totenkopfaffen sind wie alle Totenkopfaffen relativ kleine Primaten, sie erreichen eine Durchschnittslänge von 32 Zentimetern, wozu noch ein etwa 41 Zentimeter langer Schwanz kommt. Das Gewicht beträgt etwa 0,7 bis 1,1 Kilogramm, wobei die Männchen größer und schwerer sind als die Weibchen. Das Fell ist kurz und dicht, es ist am Rücken schwarzgrau und am Bauch gelblich-weiß gefärbt, die Beine und Pfoten sind orange-gelb. Die Oberseite des rundlichen Kopfes ist schwarz, die Region um die Augen ist wie bei allen Totenkopfaffen weißlich.
Dunkle Totenkopfaffen leben nur in einem sehr kleinen Gebiet im Amazonasbecken in Brasilien. Ihr Verbreitungsgebiet liegt in der Region, wo der Japurá in den Amazonas mündet. Ihr Lebensraum sind zeitweise überflutete Wälder in Flussnähe.
Über die Lebensweise der Dunklen Totenkopfaffen ist wenig bekannt, vermutlich stimmt sie mit der der übrigen Totenkopfaffen überein. Demzufolge sind sie tagaktiv und halten sich meist in den Bäumen auf. Totenkopfaffen leben in großen, gemischten Gruppen aus zahlreichen Männchen und Weibchen und ernähren sich vorrangig von Früchten und Insekten.
Das Verbreitungsgebiet dieser Art liegt in einem Schutzgebiet, in dem die Jagd verboten ist, Waldrodungen aber vorkommen. Aufgrund ihres kleinen Lebensraumes listet die IUCN die Art als gefährdet (vulnerable).
Der Dunkle Totenkopfaffe oder Vanzolini-Totenkopfaffe (Saimiri vanzolinii) ist eine Primatenart aus der Gruppe der Neuweltaffen. Er ist eng mit dem Bolivianischen Totenkopfaffen verwandt und wird manchmal als dessen Unterart angesehen. Das Art-Epitheton vanzolinii ist ein Dedikationsname zu Ehren des brasilianischen Zoologen Paulo Vanzolini.
The black squirrel monkey (Saimiri vanzolinii), also known as the blackish squirrel monkey or black-headed squirrel monkey, is a small New World primate, endemic to the central Amazon in Brazil.[2] It largely resembles the female of the far more common Bolivian squirrel monkey, though the latter lacks the black central back.[4]
This squirrel monkey has one of the most restricted geographical distributions for a primate, living in várzea forest in the confluence of the Japura and Solimões rivers. Its entire range is within the Mamirauá Sustainable Development Reserve.[2] It resides in the reserve with two other Saimiri species.[5] It is a social primate that travels with other black squirrel monkeys in large troops within its habitat.[6] Its small size makes it an easy target for its predators; however, it may resist predators when it travels in large troops.[6]
Its species overall has positive effects on the economy.[7]
Black squirrel monkeys are small primates.[6] They have blackish-gray fur over most of their body except for their legs and stomach.[7] Their legs can be yellow or have a reddish tint.[7] Their stomachs will have a yellow tint.[6] They have short and dense fur everywhere except for certain areas on the face.[7] They lack hair in the areas of the nostrils and lips, and the skin is black in these areas.[7] Black squirrel monkeys tend to be 27 to 32 centimeters in length not including the length of their tails.[6] Their full length, including their tails, can be about 40 centimeters longer than their length without their tails.[7] Male black squirrel monkeys range in weight anywhere from 0.64 to 1.22 kilograms (1.4 to 2.7 pounds).[6] Female black squirrel monkeys have a weight range of 0.64 to 0.86 kg (1.4 to 1.9 lb).[6]
They get their name from the strip of black that extends from their head to the end of their tail.[8] The black fur above their eyes forms a shallow arch and is lower on their foreheads than other species.[8] Their tails are specifically distinct from the Saimiri sciureus species because black squirrel monkeys have much thinner tails.[8]
On average, black squirrel monkeys live up to 15 years in their natural habitat, the várzea forest.[6] They can live about 5 to 10 years longer than that when they are kept in captivity.[6]
The black squirrel monkey falls under the genus, Saimiri.[7] There are four other species that fall under this same genus with the black squirrel monkey.[8]
UCLA scientists and colleagues concluded that black squirrel monkeys are a distinct species of Saimiri when it was originally considered the same species as Saimiri boliviensis.[9]
Black squirrel monkeys reside within the Mamirauá Sustainable Development Reserve in Brazil.[6] The várzea forest of this specific area experiences a consistent cycle of flooding.[9] The patterns of rain can cause a typical buildup of around 35 feet of flooding in the forest.[9] Atypical flooding due to excessive floods over a longer amount of time can threaten black squirrel monkeys' habitat.[9]
Two species, Humboldt's squirrel monkey and Ecuadorian squirrel monkey, take residence in the reserve in cohabitation with black squirrel monkeys.[5] The black squirrel monkeys inhabit a smaller ranged area than the other two species within the reserve.[5] All three species interact with one another but sexual interaction and reproduction between two different species has not been observed.[5]
The black squirrel monkey species is declared endangered because of their limited range in the várzea forest.[6] The change in climate due to global warming is also affecting the lives of the black squirrel monkey species.[9]
They are interactive primates.[6] They exist in large groups of 40–50, and can exist in groups as large as 500 monkeys.[6] Travelling in big groups allows these monkeys to resist their predators more effectively.[6] They have more eyes on their surroundings which allows them to more easily and quickly alert the pack if they sense danger.[7] If the pack is big enough, the pack may be able to surround certain predators.[7]
Black squirrel monkeys are typically quiet primates.[7] The only times they make noise are when they sense danger or are trying to call out to other members of their group.[7]
Breeding season falls between the months of September and November.[7] During this season, the male monkeys with fattened stomachs are desired more by the female monkeys.[6] A female monkey's pregnancy will last about 140 to 170 days, and the time of birth falls at the same time that rainfall and food availability are at their peaks.[7]
The black squirrel monkey is preyed upon by snakes, raptors, and felids.[6]
This black squirrel monkeys is omnivorous.[7] It prefers fruit and insects, but also eats leaves, flowers, seeds, eggs, and small vertebrates.[6][7]
Black squirrel monkeys have a positive effect on the economy by serving as subjects of biomedical research, being sold to serve as an individual's pet, and serving as a source of food.[7] There are no negative impacts of the species on the economy because of the species' small habitation range that they occupy.[7]
The black squirrel monkey (Saimiri vanzolinii), also known as the blackish squirrel monkey or black-headed squirrel monkey, is a small New World primate, endemic to the central Amazon in Brazil. It largely resembles the female of the far more common Bolivian squirrel monkey, though the latter lacks the black central back.
This squirrel monkey has one of the most restricted geographical distributions for a primate, living in várzea forest in the confluence of the Japura and Solimões rivers. Its entire range is within the Mamirauá Sustainable Development Reserve. It resides in the reserve with two other Saimiri species. It is a social primate that travels with other black squirrel monkeys in large troops within its habitat. Its small size makes it an easy target for its predators; however, it may resist predators when it travels in large troops.
Its species overall has positive effects on the economy.
El mono ardilla de Vanzolini (Saimiri vanzolinii) es una especie de primate platirrino de la familia Cebidae, endémico de las áreas inundables o várzeas cercanas a la desembocadura del río Yapurá en el río Amazonas, en Brasil, en un extensión de aproximadamente 530 km².[1]
Su cuerpo mide 28 a 32 cm y la cola 41 a 44 cm de longitud. El macho pesa cerca de 1 kg y la hembra 650 g enpromedio. Su pelo es corto y grueso, de color negro o gris: las extremidades y la parte inferior del vientre son de color amarillo a anaranjado, mientras que la cara presenta la característica máscara obscura alrededor de los ojos y la boca.[2]
Es de hábitos diurnos y sociales: vive en grupos de 30 ejemplares, divididos en subgrupos de acuerdo a la edad y el género. Cada grupo ocupa un territorio de unos 3 km² de extensión, aunque no parecen ser territoriales, pues puede ocurrir que los distintos grupos buscan comida juntos. Se desplazan aproximadamente tres km por día. Se comunican entre sí a través de una variedad de formas y para demostrar su edad, sexo o posición social, utilizan para orinar en las palmas de las manos y limpiar la orina en el cuerpo.
Se alimentan principalmente de insectos y frutas. Prefieren los insectos más lentos y más grandes y las fruta maduras y pequeñas. Además consumen pétalos de flores, semillas, huevos, hojas y pequeños vertebrados.
La época de apareamiento es de septiembre a noviembre, cuando las hembras que tienen un estro de solo tres días en un ciclo estral de un mes. Machos y hembras son promiscuos, aunque los machos establecen una estricta jerarquía, después de muchas batallas entre ellos, luego de cada cual el ganador declara su supremacía orinando sobre el derrotado. Tras cinco meses la hembra da a luz a un único cachorro, que es destetado a los seis meses y llega a la madurez sexual a los dos años y medio si es hembra, y a los tres si es macho. Normalmente, los jóvenes no abandonan su grupo de nativo, ya que en otros grupos que se enfrentarían a una serie de luchas para determinar su posición dentro del grupo.
La esperanza de vida de estos animales en la naturaleza, es de alrededor de quince años.
El mono ardilla de Vanzolini (Saimiri vanzolinii) es una especie de primate platirrino de la familia Cebidae, endémico de las áreas inundables o várzeas cercanas a la desembocadura del río Yapurá en el río Amazonas, en Brasil, en un extensión de aproximadamente 530 km².
Saimiri vanzolinii Saimiri generoko animalia da. Primateen barruko Saimiriinae azpifamilia eta Cebidae familian sailkatuta dago
Le Saïmiri à tête noire (Saimiri vanzolinii) est une espèce de primate de la famille des Cebidae.
Saïmiri noirâtre. Blackish squirrel monkey, black squirrel monkey. Capijuba-de-boné ou mico de cheiro (Brésil).
Parfois considéré comme une sous-espèce du saïmiri commun (S. sciureus). Aujourd'hui tenu pour une espèce à part entière car les deux ne cohabitent que sur 10 km2, surface sur laquelle aucun cas d'hybridation n'a été rapporté.
Ouest du Brésil. Entre le Rio Japurá et le Rio Solimões, et sur les îles Tarara et Capucho (à l'embouchure du Japurá). À l'ouest jusqu'au Paraná do Jarauá. Sa distribution effective s'étend sur 533 km2.
Un cas reporté sur la rive gauche du lac Téfé avec le saïmiri de Bolivie (S. boliviensis boliviensis).
Forêt inondable (várzea) et forêt marécageuse.
Fourrure courte et dense. Dessus du corps noirâtre (les poils noirs bien plus nombreux que les poils agouti formant une raie dorsale noirâtre continue depuis la couronne jusqu'au bout de la queue). Dessous clair. Épaules gris agouti. Avant-bras et extrémité des membres jaune doré (pas orangé). La couronne et le museau noirs contrastent violemment avec le pourtour des yeux blanc et les oreilles roses qui forment comme un masque au milieu du visage. Le plus élégant de tous les saïmiris.
Corps de 28 à 32 cm. Queue de 41 à 44 cm. Poids 950 g (M) et 650 g (F). Caryotype : 2n = 44.
Diurne. Arboricole.
Frugivore-insectivore. Surtout papillons et mantes religieuses.
Jusqu'à 50.
Groupe multimâle-multifemelle. Polygamie.
~ 50 000.
R. de Mamirauá (Brésil).
Vulnérable.
Il saimiri di Vanzolini o saimiri nero (Saimiri vanzolinii Ayres, 1985) è un primate platirrino della famiglia dei Cebidi.
L'areale di questa specie è fra i più piccoli fra quelli occupati da tutte le specie di platirrine: questi animali sono infatti endemici della várzea della zona di confluenza fra il Rio Japurá ed il Rio delle Amazzoni, in Brasile settentrionale, per un'area di circa 530 km².
Misura circa 70 cm di lunghezza, di cui più della metà spettano alla coda, per un peso di circa 1 kg.
Il pelo è corto e folto, di colore nero o grigiastro: gli avambracci delle quattro zampe ed il basso ventre sono giallo-arancio, mentre sulla faccia è presente la caratteristica mascherina attorno ad occhi e muso che caratterizza il genere Saimiri.
Si tratta di animali diurni e sociali: vivono in gruppi comprendenti una trentina di esemplari, suddivisi in sottogruppi a seconda dell'età e del sesso. Ogni gruppo occupa un territorio di circa 3km² di estensione, anche se non sembrano essere territoriali, anzi può capitare di osservare vari gruppi cercare assieme il cibo. I gruppi si muovono nell'ambito del proprio territorio percorrendo anche tre chilometri in un giorno.
Si tratta di animali socievoli e tranquilli, che tendono a comunicare fra loro con una serie di versi atti a comunicare i vari stati d'animo: per comunicare la propria età, sesso o posizione sociale, i vari animali adulti sono poi soliti urinarsi sulle palme delle mani e strofinarsi l'urina sul corpo.
Si nutrono principalmente di insetti e frutta, preferendo gli insetti più lenti e grossi (come cavallette e bruchi) e la frutta ben matura e di piccole dimensioni: qualora queste due fonti di cibo scarseggino, ripiegano su fiori, semi, uova, foglie e piccoli vertebrati.
La stagione riproduttiva va da settembre a novembre, con le femmine che hanno un estro di soli tre giorni in un ciclo estrale di un mese. Maschi e femmine si accoppiano promiscuamente fra loro, anche se i maschi stabiliscono una rigida gerarchia in seguito a combattimenti anche molto cruenti fra loro, al termine dei quali il vincitore dichiara la propria supremazia urinando sullo sconfitto. La gestazione dura circa cinque mesi, al termine dei quali viene dato alla luce un unico cucciolo che viene svezzato a sei mesi e raggiunge la maturità sessuale a due anni e mezzo se femmina, dopo i tre se maschio. Solitamente, i giovani non lasciano il gruppo natio, poiché in altri gruppi dovrebbero affrontare una serie di lotte con i conspecifici del proprio sesso al fine di determinare la propria posizione nell'ambito del gruppo.
La speranza di vita di questi animali si aggira attorno ai quindici anni di vita in natura.
Il saimiri di Vanzolini o saimiri nero (Saimiri vanzolinii Ayres, 1985) è un primate platirrino della famiglia dei Cebidi.
De zwart doodshoofdaapje (Saimiri vanzolinii) is een soort uit het geslacht doodshoofdaapjes (Saimiri). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Ayres in 1985.
De soort komt voor in Brazilië.
Bronnen, noten en/of referentiesDe zwart doodshoofdaapje (Saimiri vanzolinii) is een soort uit het geslacht doodshoofdaapjes (Saimiri). De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Ayres in 1985.
Saimiri vanzolinii, o macaco-de-cheiro-de-cabeça-preta, é um primata platirrino, endêmico da Amazônia Central no Brasil.[2] Pode ser confundido com indivíduos fêmeas de Saimiri boliviensis, embora o último careça de uma mancha central negra no dorso.[4]
Esta espécie possui uma das distribuições geográficas mais restritas para um primata, vivendo em várzeas na confluência do rio Japurá e rio Solimões.
Saimiri vanzolinii, o macaco-de-cheiro-de-cabeça-preta, é um primata platirrino, endêmico da Amazônia Central no Brasil. Pode ser confundido com indivíduos fêmeas de Saimiri boliviensis, embora o último careça de uma mancha central negra no dorso.
Esta espécie possui uma das distribuições geográficas mais restritas para um primata, vivendo em várzeas na confluência do rio Japurá e rio Solimões.
Saimiri vanzolinii[2][3][4] är en däggdjursart som beskrevs av Ayres 1985. Saimiri vanzolinii ingår i släktet dödskalleapor och familjen cebusliknande brednäsor.[5][6] IUCN kategoriserar arten globalt som sårbar.[1] Inga underarter finns listade.[5]
Denna dödskalleapa förekommer i ett mindre område i norra Brasilien (delstat Amazonas) där två källfloder av Amazonfloden möts. Arten vistas främst i fuktiga skogar som ibland översvämmas när floderna för högvatten.[1] Individerna är främst aktiva på dagen.[7]
Liksom andra dödskalleapor äter Saimiri vanzolinii främst insekter och andra smådjur. Födan kompletteras med frukter, särskilt under den torra perioden. Vuxna hannar och honor bildar tillsammans med sina ungar flockar med 20 till 75 medlemmar (ibland upp till 100 individer). Det finns även blandade flockar med arter av släktet kapuciner (Cebus).[1] Fortplantningssättet är antagligen likadant övriga dödskalleapor.[7]
Hannar är med en genomsnittlig vikt av 950 gram tyngre än honor som väger cirka 650 gram.[1] Kroppslängden (huvud och bål) är 26 till 36cm och svansen blir 35 till 43cm lång. Pälsen är huvudsakligen gulbrun med en mera svartaktig ovansida och en ljusare undersida. Även arten hjässa är svart medan öronen är vit. Övriga ansiktet är med undantag av den svarta nakna regionen kring munnen vitaktig.[7]
Wikimedia Commons har media som rör Saimiri vanzolinii.
Wikispecies har information om Saimiri vanzolinii.
Saimiri vanzolinii är en däggdjursart som beskrevs av Ayres 1985. Saimiri vanzolinii ingår i släktet dödskalleapor och familjen cebusliknande brednäsor. IUCN kategoriserar arten globalt som sårbar. Inga underarter finns listade.
Denna dödskalleapa förekommer i ett mindre område i norra Brasilien (delstat Amazonas) där två källfloder av Amazonfloden möts. Arten vistas främst i fuktiga skogar som ibland översvämmas när floderna för högvatten. Individerna är främst aktiva på dagen.
Liksom andra dödskalleapor äter Saimiri vanzolinii främst insekter och andra smådjur. Födan kompletteras med frukter, särskilt under den torra perioden. Vuxna hannar och honor bildar tillsammans med sina ungar flockar med 20 till 75 medlemmar (ibland upp till 100 individer). Det finns även blandade flockar med arter av släktet kapuciner (Cebus). Fortplantningssättet är antagligen likadant övriga dödskalleapor.
Hannar är med en genomsnittlig vikt av 950 gram tyngre än honor som väger cirka 650 gram. Kroppslängden (huvud och bål) är 26 till 36cm och svansen blir 35 till 43cm lång. Pälsen är huvudsakligen gulbrun med en mera svartaktig ovansida och en ljusare undersida. Även arten hjässa är svart medan öronen är vit. Övriga ansiktet är med undantag av den svarta nakna regionen kring munnen vitaktig.
Saimiri vanzolinii là một loài động vật có vú trong họ Cebidae, bộ Linh trưởng. Loài này được Ayres mô tả năm 1985.[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. Saimiri vanzolinii là một loài động vật có vú trong họ Cebidae, bộ Linh trưởng. Loài này được Ayres mô tả năm 1985.
Saimiri vanzolinii Ayres, 1985
Ареал
Чёрный саймири[источник не указан 400 дней] (лат. Saimiri vanzolinii) — вид приматов семейства цепкохвостых обезьян, обитающих в Южной Америке. Видовое латинское название дано в честь бразильского зоолога Паулу Ванзолини[1].
Классификация саймири дискуссионна. Некоторыми экспертами чёрные саймири рассматриваются в качестве подвида Saimiri boliviensis, тогда как другие выделяют их в отдельный вид.[2]
Средняя длина взрослой особи 31,75 см, средняя длина хвоста 40,64 см. Шерсть короткая, густая, чёрного или тёмно-серого цвета, лапы жёлтые или красноватые. Кожа вокруг рта и носа чёрная, безволосая. Вес от 0,68 до 1,13 кг. Выражен половой диморфизм: самцы крупнее самок.[3]
Ареал небольшой, заключён между реками Жапура и Солимойнс.[2]
В рационе в основном фрукты и насекомые. Проводят 75 — 80 % времени в поисках пищи. Во время сухого сезона рацион практически полностью состоит из животной пищи.[4]
Образуют крупные группы, в которых может быть до 100 особей (обычно от 20 до 75).[4] Спаривание и размножение сезонное, сезон размножения длится не более двух месяцев. В помёте обычно один детёныш.[5]
Международный союз охраны природы присвоил виду охранный статус «Уязвимый». Основные угрозы популяции — охота и разрушение среды обитания. Плотность популяции составляет 2,8 группы на км².[2]
Чёрный саймири[источник не указан 400 дней] (лат. Saimiri vanzolinii) — вид приматов семейства цепкохвостых обезьян, обитающих в Южной Америке. Видовое латинское название дано в честь бразильского зоолога Паулу Ванзолини.
검은다람쥐원숭이(Saimiri vanzolinii)는 꼬리감는원숭이과에 속하는 영장류의 일종이다. 이 작은 신세계원숭이는 브라질이 원산지다.
이 다람쥐원숭이는 영장류 중에서 지리적으로 가장 제한적인 분포를 보이는 종의 하나이며, 자푸라 강과 솔리모에스 강이 합류하는 아마조니아 바르제아 숲에서 산다.
