The vocalizations of bushbabies (Galago species) have been divided into three categories: social contact calls, threat and distress calls, and attention and alarm calls (Charles-Dominique, 1977a). Great diversity exists between bushbaby species vocalizations and vocalizations of Gabon bushbabies have been described as croak calls. Croaks are used as calls between conspecifics over great distances and they are typically relatively short sequences (Grubb et al., 2003).
Communication Channels: visual ; tactile ; acoustic ; chemical
Perception Channels: visual ; tactile ; acoustic ; chemical
Potential predators of Gabon bushbabies include long-nosed mongooses (Herpestes naso) and crested genets (Genetta cristata) (Mzilikazi et al., 2006). Potential primate predators include grey-cheeked mangabeys (Lophocebus albigena) and common chimpanzees (Pan troglodytes). Chimpanzees has been observed "fishing" for bushbabies by poking a large stick down a tree hole (Byrne, 2007). They are likely to also fall prey to forest raptors and arboreal snakes. Bushbabies are active at night, which lowers their risk of predation, and they are agile and alert. Their arboreal habits lowers their risk of predation as well. Bushbabies are generally cryptically colored.
Known Predators:
Anti-predator Adaptations: cryptic
Gabon bushbabies are small primates with long, fully furred tails and large ears (Kingdon, 2004). The tail is about 25.4 cm in length and the average body length is 21.6 cm (Grzimek et al., 2005). The closest relative of G. gabonensis is Galago alleni. Galago gabonensis has been described as browner in color than Galago alleni (Groves, 1989). Like other primates, Gabon bushbabies have opposable thumbs that can be used for gripping branches. They are nocturnal and have large eyes with a reflective tapetum lucidum. This improves vision in low-light conditions and is common among nocturnal carnivorous species (Gron 2008). Although ear morphology has not been specifically described in Gabon bushbabies, other bushbabies have ears that can move independently of one another and that are the largest relative to their body size among primates (Ankel-Simons, 2007). These extremely large and mobile ears likely aid G. gabonensis in hunting for insects.
Range mass: 250 to 450 g.
Average length: 21.6 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
No long-term wild study of longevity in Gabon bushbabies has ever taken place, and specific information on lifespan is lacking. Other bushbabies have been documented living into their mid-teens (Ross, 1988).
Gabon bushbabies occupy tropical forests with high annual rainfall. Forest level occupation is unknown, although they are likely to be found in mid to low forest canopy levels because of their dietary niche. Gabon receives an average annual rainfall of 170 cm, most of which falls over only a third of the year. Two rainy seasons between September and December and March to June account for this rainfall. Temperatures range from a maximum of around 30 degrees C to a minimum of around 20 degrees C (Charles-Dominique, 1977a). The elevation of the documented occupation areas of Gabon range from 150 to 1000 m (Willamowius, 2008). Due to lower human populations in Gabon, the country is not thought to lose a large proportion of its forests due to deforestation each year (Barnes, 2008).
Range elevation: 150 to 1000 m.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: rainforest
Gabon bushbabies are found mainly between the Sanaga and Ogooue Rivers in Cameroon, as well as the Rio Muni mainland region of Equatorial Guinea. They have also been recorded south of the Ogooue River in Gabon.
Biogeographic Regions: ethiopian (Native )
It is likely that Gabon bushbabies disperse seeds and help to regulate insect populations.
Ecosystem Impact: disperses seeds
Gabon bushbabies are occasionally found at bushmeat markets, although they are not commonly hunted and consumed by humans. They are also occasionally sold as pets for human entertainment (Bowen-Jones & Pendry, 1999).
Positive Impacts: pet trade ; food
There are no adverse effects of Galago gabonensis on humans.
Galago gabonensis is recognized as "least concern" by the IUCN under the name Sciurocheirus gabonensis. It is possible that the Gabon Bushbaby faces similar conservation challenges as G. alleni. Deforestation is currently the biggest threat to Gabon's tropical forests (Gron 2008).
US Federal List: no special status
CITES: no special status
Galago gabonensis is recognized under the name Sciurocheirus gabonensis by some authors.
Gabon bushbabies are omnivorous, eating primarily animal prey, fruit, and gums (Charles-Dominique, 1977a). Their animal prey consists mainly of arthropods.
Animal Foods: insects
Plant Foods: fruit; sap or other plant fluids
Primary Diet: herbivore (Eats sap or other plant foods); omnivore
Female Gabon bushbabies are likely capable of two birth seasons per year, based on the presence of visible estrus swellings. Females in other species of Galago mate with more than one male during a single estrus cycle (Pullen et al., 2002), it is possible that Gabon bushbabies do as well. Galago moholi copulations in the wild last on average 9 minutes, with 2 to 5 prolonged mounts punctuated with rest and grooming (Pullen et al., 2002).
Mating System: polygynandrous (promiscuous)
Although gestation length could not be found in the primary literature for Gabon bushbabies, gestation length in other Galago species can range from 111 days to 142 days (Charles-Dominique, 1977a), with smaller species exhibiting shorter gestational lengths. Since Gabon bushbabies are comparatively large, they are likely to have gestation lengths that fall along the longer end of the spectrum and birth masses towards the higher end of the range. Among Galago species, young develop fur between 2 and 3 weeks of age (Charles-Dominique, 1977a). Most Galago species give birth several times a year, with births often peaking at times when fruits and insects are abundant. Other aspects of their reproduction may be similar to their close relative, Galago alleni.
Breeding interval: Breeding intervals are not reported for G. gabonensis. Female Galago alleni generally breed once yearly.
Breeding season: Galago species generally breed throughout the year, with births peaking when fruits and insects are abundant.
Range number of offspring: 1 to 2.
Average number of offspring: 2.
Range weaning age: 10 to 14 weeks.
Average time to independence: 10 months.
Average age at sexual or reproductive maturity (female): 10 months.
Average age at sexual or reproductive maturity (male): 10 months.
Key Reproductive Features: iteroparous ; year-round breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
Female bushbabies "park" their infants on tree branches while they forage nearby. This parking sometimes lasts up to three hours, with the mothers intermittently checking on the infant or juvenile. If the offspring is in distress, it may emit a distress call, to which the mother quickly responds (Charles-Dominique, 1977a). Independent locomotion and exploration begins at around 2 to 3 weeks of age and consumption of solid food usually begins at around one month of age, when the infant starts taking food from its mother's mouth (Charles-Dominique, 1977a). Males don't seem to directly care for young, although they may keep other males away through territorial defense.
Parental Investment: precocial ; 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); extended period of juvenile learning
Der Gabun-Galago (Sciurocheirus gabonensis, Syn.: Galago gabonensis) ist eine Primatenart aus der Familie der Galagos (Galagonidae). Er gilt erst seit einigen Jahren als eine vom Allen-Galago getrennte Art. Zusammen mit diesem und dem Kamerun-Galago bildet er die Gattung der Eichhörnchen-Galagos (Sciurocheirus).
Mit einem Gewicht von 200 bis 300 Gramm zählen Gabun-Galagos zu den mittelgroßen Vertretern ihrer Familie. Ihr Fell ist an der Oberseite braun gefärbt, die Unterseite ist hellgrau. Die Hinterbeine sind lang und kräftig, der Schwanz ist länger als der Rumpf und buschig. Der Kopf weist eine lange, zugespitzte Schnauze auf, die Augen sind vergrößert, ebenso die unbehaarten, beweglichen Ohren.
Gabun-Galagos bewohnen das mittlere Afrika, ihr Verbreitungsgebiet umfasst den Südosten Kameruns (südöstlich des Sanaga), Mbini (den Festlandteil Äquatorialguineas), Gabun und den Norden der Republik Kongo. Ihr Lebensraum sind tropische Wälder.
Diese Primaten sind wie alle Galagos nachtaktiv, tagsüber schlafen sie in Baumhöhlen oder Blätternestern. In der Nacht gehen sie auf Nahrungssuche, dabei kommen sie häufig auf den Boden. Ihre Fortbewegungsweise sind wie bei allen Eichhörnchengalagos froschähnliche Sprünge, wobei sie – was für Primaten untypisch ist – mit den Händen und nicht mit den Füßen voran landen. Sie leben einzelgängerisch, und die Männchen reagieren sehr aggressiv auf andere Männchen. Sie haben sehr große Streifgebiete, Männchen 30 bis 60 Hektar und Weibchen 8 bis 10 Hektar. Ihre Nahrung besteht aus Früchten und Insekten.
In Teilen ihres Verbreitungsgebietes werden sie durch die Zerstörung ihres Lebensraums in Mitleidenschaft gezogen, allerdings nicht in bedrohlichem Ausmaß. Die IUCN listet die Art als „nicht gefährdet“ (least concern).
Der Gabun-Galago (Sciurocheirus gabonensis, Syn.: Galago gabonensis) ist eine Primatenart aus der Familie der Galagos (Galagonidae). Er gilt erst seit einigen Jahren als eine vom Allen-Galago getrennte Art. Zusammen mit diesem und dem Kamerun-Galago bildet er die Gattung der Eichhörnchen-Galagos (Sciurocheirus).
The Gabon bushbaby (Sciurocheirus gabonensis) is a species of primate in the family Galagidae found in Cameroon, Gabon, and the Republic of the Congo.[1] Its head and body length is 8.5 in with a 10-in tail, and it weighs about 10 oz. It lives in evergreen tropical rainforests and eats primarily fallen fruit, but also some arthropods.
The Gabon bushbaby is native to tropical western Central Africa. Its range extends from the Sanaga River in Cameroon, through the Congo Republic and Río Muni, in Equatorial Guinea to Gabon, where it is found between the Sanaga River and the Ogooué River. It is unclear whether it occurs to the south of the Ogooue River. Its typical habitat is dense humid forest where it lives in the lower part of the canopy among the lianas and tree trunks. It seems able to adapt to some extent to inhabiting secondary growth and partially felled areas.[2]
The Gabon bushbaby moves widely through the forest; the home range of males is 30 to 60 hectares (74 to 148 acres) while that of females is 8 to 10 hectares (20 to 25 acres).[2] This bushbaby forages for small invertebrates and fruit which it finds on the forest floor. At birth the ratio between the sexes is 1:1 but among adults, the ratio of males to females is 1:4. This difference may be because the males travel greater distances and are therefore at greater risk of predation. Animals known to prey on this species include large snakes, the African palm civet (Nandinia binotata), the African linsang (Poiana richardsonii), and large owls.[3]
The Gabon bushbaby has a relatively wide range and is a fairly common species. Apart from some felling of forest for timber and for conversion into agricultural land, no particular threats have been identified. This bushbaby is present in a number of protected areas, so the International Union for Conservation of Nature has rated its conservation status as being of "least concern".[2]
The Gabon bushbaby (Sciurocheirus gabonensis) is a species of primate in the family Galagidae found in Cameroon, Gabon, and the Republic of the Congo. Its head and body length is 8.5 in with a 10-in tail, and it weighs about 10 oz. It lives in evergreen tropical rainforests and eats primarily fallen fruit, but also some arthropods.
El gálago de Gabón (Sciurocheirus gabonensis)[2] es una especie de primate estrepsirrino perteneciente a la familia Galagidae.[3] Habita en la mitad sur de Camerún, Río Muni (Guinea Ecuatorial), Gabón y la República del Congo.[3] La longitud corporal es de 21,5 centímetros, con una cola de 25 cm y un peso de aproximadamente 280 gramos. Vive en la selva tropical húmeda y se alimenta principalmente de frutos caídos, pero también lo hace de artrópodos. Originalmente se incluía dentro de la especie Galago alleni, pero esta especie se restringe actualmente a la población de la isla Bioko.[4]
El gálago de Gabón (Sciurocheirus gabonensis) es una especie de primate estrepsirrino perteneciente a la familia Galagidae. Habita en la mitad sur de Camerún, Río Muni (Guinea Ecuatorial), Gabón y la República del Congo. La longitud corporal es de 21,5 centímetros, con una cola de 25 cm y un peso de aproximadamente 280 gramos. Vive en la selva tropical húmeda y se alimenta principalmente de frutos caídos, pero también lo hace de artrópodos. Originalmente se incluía dentro de la especie Galago alleni, pero esta especie se restringe actualmente a la población de la isla Bioko.
Il galagone del Gabon (Sciurocheirus gabonensis (Gray, 1863)) è un primate strepsirrino appartenente alla famiglia Galagidae.[2]
Misura una quarantina di centimetri di lunghezza, per un peso di 280 g.
L'areale della specie si estende in Camerun, Gabon e Repubblica del Congo.
È molto simile al galagone di Bioko (Sciurocheirus alleni), del quale veniva un tempo considerato una sottospecie (Galago alleni gabonensis).
Il galagone del Gabon (Sciurocheirus gabonensis (Gray, 1863)) è un primate strepsirrino appartenente alla famiglia Galagidae.
가봉갈라고 또는 가봉부시베이비(Sciurocheirus gabonensis)는 갈라고과에 속하는 영장류의 하나이다.[2] 카메룬과 가봉, 콩고공화국에 산다.[2] 머리와 몸 길이는 21.6 cm 정도이고, 꼬리 길이는 25 cm정도이며, 몸무게는 280 g이다. 상록의 열대 우림에서 살고, 주로 떨어진 과일을 먹지만, 약간의 절지동물을 먹기도 한다. 원래는 비오코알렌갈라고(Galago alleni)에 속하는 종이었으며, 현재 비오코섬에만 제한적으로 존재한다.[3]
가봉갈라고 또는 가봉부시베이비(Sciurocheirus gabonensis)는 갈라고과에 속하는 영장류의 하나이다. 카메룬과 가봉, 콩고공화국에 산다. 머리와 몸 길이는 21.6 cm 정도이고, 꼬리 길이는 25 cm정도이며, 몸무게는 280 g이다. 상록의 열대 우림에서 살고, 주로 떨어진 과일을 먹지만, 약간의 절지동물을 먹기도 한다. 원래는 비오코알렌갈라고(Galago alleni)에 속하는 종이었으며, 현재 비오코섬에만 제한적으로 존재한다.
