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Little data has been gathered on predation on Chilean shrew opossums. Like most small mammals, they are likely a food base for nocturnal carnivores. Possible vertebrate predators include Buteo polyosoma, Elanus leucurus, Falco sparverius, Geranoaetus melanoleucus, Parabuteo unicinctus; Athene cunicularia, Bubo virginianus, Tyto alba, Dusicyon culpaeus (Lycalopex culpaeus), Philodryas chamissonis, and Tachymenis peruviana (Jaksie et al, 1980).
Chilean shrew opossums are small, cryptic, nocturnal animals and likely avoid most predation by being difficult to find.
Anti-predator Adaptations: cryptic
Chilean shrew opossums are small mammals. Their body size can range from 10 to 13 cm. Their ventral and dorsal portions are dark brown or gray. The tail is solid in color, with short, sparse hairs, and shorter than the head and body.Their shape is shrew-like and the ears are small and rounded (Redford et al, 1992). Determination of gender is through dental formula- males have a conical, single rooted upper canine and females have a double-rooted canine resembling a premolar (Patterson and Gallardo, 1987).
Range length: 10 to 13 cm.
Other Physical Features: endothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes alike
No data has been gathered on the life span of Chilean shrew opossums. Few trapped individuals have been recaptured, making it difficult to judge life span (Meserve et al, 1982). Because of their small body size, it is likely that they do not live more than a few years.
Chilean shrew opossums reside in temperate forest habitat. Favorable microclimates include wet areas of southern beech (Nothofagus species) forest with plenty of coarse woody debris and thick understory shrub cover. These marsupials are more frequently caught at elevations lower than 600 meters (Kelt and Martinez, 1989).
Range elevation: 0 to 1135 m.
Habitat Regions: temperate ; terrestrial
Terrestrial Biomes: forest ; rainforest
Chilean shrew opossums have only been found in a small geographic range that covers southern Chile, Chiloe Island, and a small part of southern Argentina (approximately 40 degrees south latitude and 70 degrees west longitude). Captures of Rhyncholestes raphanurus occurred at elevations from sea level to 1135 m (Patterson and Gallardo, 1987). Only two specimens have been captured in Argentina. Once thought to be rare, it is possible that they are abundant in limited habitat types (Meserve et al, 1982).
Biogeographic Regions: neotropical (Native )
Chilean shrew opossums are semi-fossorial, foraging in the litter layer for soil invertebrates (54% of diet) and earthworms (7%). Another principle component of their diet is plant material and fungi (39%), and they are commonly baited into traps with rolled oats (Meserve et al, 1988).
Animal Foods: insects; terrestrial non-insect arthropods; mollusks; terrestrial worms
Plant Foods: seeds, grains, and nuts
Other Foods: fungus
Primary Diet: carnivore (Insectivore ); mycophage
Other than their consumption of insects, earthworms and plant material and fungi, little is known about the ecosystem roles of R. raphanurus.
Due to few studies, economic importance of Chilean shrew opossums is not known.
Due to few studies, economic importance of Chilean shrew opossums is not known.
Chilean shrew opossums were listed in 1994 by the IUCN (International Union for Conservation of Nature and Natural Resources) as vulnerable due to habitat loss and degradation.
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: near threatened
Little is known about the communication of Chilean shrew opossums or how they perceive their environment. They likely have poor eyesight due to nocturnal activity and small eyes. Vibrissae are used to sense insects and objects in the environment. Examination of their brains shows large olfactory bulbs, indicating an acute sense of smell (Patterson and Gallardo, 1987).
Communication Channels: tactile ; chemical
Perception Channels: visual ; tactile ; acoustic ; chemical
Little is known about caenolestid mating systems. The seemingly solitary behavior of Chilean shrew opossums (Kelt and Martinez, 1989), as well as random distribution of resources in their environment, suggests a polygynandrous (promiscuous) mating system. Other hypotheses include that they live in family groups which would suggest monogamous mating systems. Neither hypotheses have been tested.
Few studies have been done on the reproductive cycle of Chilean shrew opossums. Females do not have a pouch and possess five to seven teats. Patterns of teat development suggest litters of 5 to 7 or greater (Patterson and Gallardo, 1987). There is evidence that females are capable of reproducing any time of the year, as lactating females have been captured in February, March, May, October, November and December (Nowak, 1999). Males are thought to be reproductively active all year. They possess a cleft penis and paired sperm (Patterson and Gallardo, 1987).
Breeding interval: Breeding intervals are unknown in Chilean shrew opossums.
Breeding season: Chilean shrew opossums may breed throughout the year.
Range number of offspring: 5 to 7.
Key Reproductive Features: iteroparous ; year-round breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
Little is known about parental care in R. raphanurus. A mother with young has never been captured, suggesting they may use a nest to raise young. The trapping of an adult male, adult female and two juveniles in one trap in a short time period led to the hypothesis that R. raphanurus live in family groups, indicating that both male and female participate in care of young. This hypothesis has not yet been tested (Patterson and Gallardo, 1987).
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female)
L'opòssum rata de l'illa Chiloé (Rhyncholestes raphanurus) és una de les sis espècies supervivents d'opòssum rata. És un marsupial petit que viu en boscos temperats perennes de creixement lent a Xile i Argentina. Com que presenta certes particularitats dins del grup d'opòssums rata, és l'única espècie del seu gènere Rhyncholestes. És una espècie vulnerable, inclosa a la Llista Vermella de la UICN d'espècies amenaçades.
Die Chilenische Opossummaus (Rhyncholestes raphanurus) ist eine Beutelsäugerart aus der Familie der Mausopossums (Caenolestidae). Sie wird in eine eigene Gattung (Rhyncholestes) gestellt und ist somit monotypisch. Beheimatet ist sie auf der chilenischen Insel Chiloé und dem angrenzenden Festland und hat somit das südlichste Verbreitungsgebiet ihrer Familie.
Die Chilenische Opossummaus ist durch die langgestreckte Schnauze gekennzeichnet, die ihr ein ratten- oder spitzmausähnliches Aussehen verleiht. Ihr dichtes, weiches Fell ist dunkelbraun, der kurze, haarlose Schwanz ist schwarz gefärbt. Diese Tiere erreichen eine Kopfrumpflänge von 11 bis 13 Zentimetern, eine Schwanzlänge von 7 bis 9 Zentimetern und ein Gewicht von rund 21 Gramm.
Lebensraum dieser Tiere sind kühle Regenwälder bis in 1100 Metern Seehöhe. Sie führen ein bodenbewohnendes Leben und dürften nachtaktiv sein. Tiere, die im Herbst gefunden wurden, wiesen oft eine verdickte Schwanzwurzel auf, was ein Hinweis für Fettspeicherung für die Winterstarre (Torpor) ist. Sie ernähren sich von Insekten, Würmern und Pilzen, oft graben sie in der Erde oder im Laub nach Nahrung.
Über das Sozialverhalten und die Fortpflanzung ist kaum etwas bekannt. Die Weibchen haben sieben Zitzen, sechs kreisförmig angeordnete und eine in der Mitte. Säugende Weibchen wurden nahezu das ganze Jahr über gefunden.
Die Hauptbedrohung der Chilenischen Opossummaus stellt die Rodung der Wälder dar. Die Weltnaturschutzunion IUCN listet sie deshalb in der Roten Liste gefährdeter Arten als gering gefährdet (Near Threatened).
Die Chilenische Opossummaus (Rhyncholestes raphanurus) ist eine Beutelsäugerart aus der Familie der Mausopossums (Caenolestidae). Sie wird in eine eigene Gattung (Rhyncholestes) gestellt und ist somit monotypisch. Beheimatet ist sie auf der chilenischen Insel Chiloé und dem angrenzenden Festland und hat somit das südlichste Verbreitungsgebiet ihrer Familie.
L-Opossum bugeddum ta' mnieħru twil jew Opossum far Ċilen magħruf xjentifikament bħala Rhyncholestes raphanurus, huwa wieħed minn 6 speċi ta' opossumi ġrieden li għadhom ħajjin illum. Dan il-marsupjal żgħir mifrux mal-foresti temperati u dejjem ħodor ta' l-Arġentina u ċ-Ċili. Huwa pjuttost uniku ukoll fost l-ispeċi ta' l-ordni Paucituberculata u għalhekk qiegħed fil-ġeneru Rhyncholestes għalih waħdu.
L-opossumi bugdiedem ta' mneħirhom twil jew opossumi firien Ċileni, kif jgħid l-isem komuni għandhom id-dehra ta' ġurdien ta' geddumu twil u d-daqs simili ta' far. Dawn il-marsupjali huma ikkaratterizzati b' wiċċ twil għall-ponta, b' par għajnejn żgħar u b' denb irqiq u twil kemxejn muxgħar, li qatt ma' jilħaqq in-nofs tat-tul totali.
F' din l-ispeċi ma hemmx dimorfiżmu sessuali u l-adulti tant huma simili ta' xulxin li biex wieħed jiddetermina is-sess irid jeżamina l-formula tas-snien. L-irġiel fix-xedaq ta' fuq għandhom nejba konikali b' għerq wieħed, filwaqt li n-nisa għandhom l-istess nejba qiesa premolari u b' għerq doppju. In-nisa ta' din l-ispeċi ta' marsupjal ma għandhomx marsupju u mgħammrin b' 5 jew 7 żejżiet.
L-opossumi bugdiedem ta' mneħirhom twil għalkemm għandhom par għajnejn żgħar b' vista bagħtuta, xorta waħda huma kaċċaturi attivi ħafna u jikkaċċaw insetti, ħniex u vertebrati u invertebrati żgħar ma' tul il-lejl. Dan kollu jagħmluh bl-għajnuna ta' smiegħ eċċellenti u x-xagħar sensittiv ħafna li għandhom mat-tul kollu ta' wiċċhom.
L-opossumi bugdiedem ts' mneħirhom twil huma marsupjali nattivi tal-kontinent ta' l-Amerika ta' isfel u jinsabu mifruxin mal-foresti temperati u dejjem ħodor ta' l-Andi fin-Nofs in-Nahr taċ-Ċili u fil-Lbiċ ta' l-Arġentina, minn mal-kosta sa altitudni ta' madwar 1000 metru.
Is-sottospeċi Rhyncholestes raphanurus continentalis, hija l-popolazzjoni ta' fuq il-kontinent, filwaqt Rhyncholestes raphanurus raphanurus hija l-popolazzjoni ta' fuq il-gżira ta' Chiloè.
Bublitz fl-1987 għadda suġġeriment, li jkun hemm 2 speċi fil-ġeneru Rhyncholestes (Rhyncholestes raphanurus u Rhyncholestes continentalis). Madankollu il-biċċa l-kbira tal-mammoloġisti ma jimxux ma' din il-klassifikazzjoni ta' Bublitz u jaċċettaw speċi waħda biss b' 2 sottospeċi.
Din hija speċi fil-periklu ta' estinzjoni, inkluża fil-Lista l-ħamra ta' l-ispeċi mhedda u qiegħda kklassifikata bħala speċi fi stat vulnerabbli.
Rhyncholestes continentalis huwa sinonimu ta' Rhyncholestes raphanurus
L-Opossum bugeddum ta' mnieħru twil jew Opossum far Ċilen magħruf xjentifikament bħala Rhyncholestes raphanurus, huwa wieħed minn 6 speċi ta' opossumi ġrieden li għadhom ħajjin illum. Dan il-marsupjal żgħir mifrux mal-foresti temperati u dejjem ħodor ta' l-Arġentina u ċ-Ċili. Huwa pjuttost uniku ukoll fost l-ispeċi ta' l-ordni Paucituberculata u għalhekk qiegħed fil-ġeneru Rhyncholestes għalih waħdu.
The long-nosed caenolestid (Rhyncholestes raphanurus), also known as the Chilean shrew opossum or long-nosed shrew opossum, is a shrew opossum that occurs in temperate forests of Argentina and southern Chile. It was first described by American zoologist Wilfred Hudson Osgood in 1924. The long-nosed caenolestid resembles Caenolestes species in morphology. It is characterized by a long, pointed snout, small eyes and ears, and one claw on a digit of each of the thin limbs. Little is known of its behavior; it appears to be terrestrial (lives on land), nocturnal (active mainly at night) and omnivorous. It prefers cool, moist areas, and has a small distribution. It is classified as near threatened by the IUCN.
The long-nosed caenolestid is the sole member of its genus, and is classified in the family Caenolestidae. It was first described by American zoologist Wilfred Hudson Osgood in 1924. Two subspecies are recognised:[2][3]
A 2013 morphological and mitochondrial DNA-based phylogenetic study showed that the Incan caenolestid (Lestoros inca) and the long-nosed caenolestid form a clade sister to Caenolestes. The cladogram below is based on this study.[4]
Gray short-tailed opossum (Monodelphis domestica)
Brown four-eyed opossum (Metachirus nudicaudatus)
Incan caenolestid (Lestoros inca)
Long-nosed caenolestid (Rhyncholestes raphanurus)
CaenolestesNorthern caenolestid (C. convelatus)
Dusky caenolestid (C. fuliginosus)
Andean caenolestid (C. condorensis)
Gray-bellied caenolestid (C. caniventer)
Eastern caenolestid (C. sangay)
Caenolestid fossils date to as early as the early Eocene (nearly 55 mya). The generic name derives from the Greek words rhynchos ("snout") and lestes ("robber", "pirate"). The specific name comes from the Greek raphanos ("cabbage"), referring to the thick tail of this caenolestid. The Spanish name for this caenolestid, comadrejita trompuda, is the combination of comadreja ("weasel") and trompa ("snout").[5] Other names for this shrew opossum are Chilean shrew opossum or Chilean caenolestid.[1]
The long-nosed caenolestid resembles Caenolestes species in morphology. In his 1924 account, Osgood recorded external measurements of three specimens. The head-and-body length ranged from 17.5 to 21.5 centimetres (6.9 to 8.5 in), skull length was between 3 and 3.5 centimetres (1.2 and 1.4 in) and hind feet measured 19.5 to 23.5 centimetres (7.7 to 9.3 in). The smooth coat is dark greyish brown, without countershading (greater pigmentation on the upper side).[5] It is characterized by a long, pointed snout, small eyes and ears, and one claw on a digit of each of the thin limbs.[6] This shrew opossum lacks a marsupium[7] (young are attached to the nipples) and has seven nipples, unlike the four typical of other caenolestids.[3] The tail helps in balancing the body during locomotion; the relatively shorter tail could imply lesser agility in the long-nosed caenolestid in comparison to other caenolestids. Moreover, the tail can be used to store fat,[5] and is reportedly thickest during early winter.[3]
A 2007 study recorded dental anomalies such as missing teeth and supernumerary teeth.[8] The rodent-like incisors help in killing vertebrate prey and searching for insects in crevices.[5] The pattern of tooth eruption appears to be largely consistent in all caenolestids – the eruption of procumbent (trailing along the surface without spreading out roots) incisors, followed by the development of closely spaced incisors that distance from one another as the mandible grows, and then the eruption of molars and premolars.[9]
Little is known of the behavior of the long-nosed caenolestid. It appears to be terrestrial (lives on land) and nocturnal (active mainly at night). An omnivore, it feeds on insects and small invertebrates as well as plant material such as fungi. The caenolestid appears to live in burrows and fallen logs;[5] nests may be used temporarily. Lactating females have been reported in May as well as from October to March.[3]
The long-nosed caenolestid occurs in temperate forests of Argentina and southern Chile, and up to altitudes of 1,135 metres (3,724 ft) above the sea level (in Osorno Province, Chile). It prefers cool, moist areas.[3] Known from less than 25 locations, it has a very small distribution.[10] This shrew opossum also marks the southern limit of the distribution of caenolestids.[11] Though locally abundant, the survival of the caenolestid is threatened by deforestation. Its population has declined by nearly 20% since the 1990s due to deforestation and human settlement. The IUCN classifies the long-nosed caenolestid as near threatened.[1]
The long-nosed caenolestid (Rhyncholestes raphanurus), also known as the Chilean shrew opossum or long-nosed shrew opossum, is a shrew opossum that occurs in temperate forests of Argentina and southern Chile. It was first described by American zoologist Wilfred Hudson Osgood in 1924. The long-nosed caenolestid resembles Caenolestes species in morphology. It is characterized by a long, pointed snout, small eyes and ears, and one claw on a digit of each of the thin limbs. Little is known of its behavior; it appears to be terrestrial (lives on land), nocturnal (active mainly at night) and omnivorous. It prefers cool, moist areas, and has a small distribution. It is classified as near threatened by the IUCN.
La comadrejita trompuda o ratón runcho trompudo (Rhyncholestes raphanurus) es una especie de marsupial paucituberculado de la familia Caenolestidae (únicos representantes vivientes del orden Paucituberculata), y la única del género Rhyncholestes. Es endémica de Chile. Habita en bosques densos y templados, hasta altitudes de 1100 msnm. Se trata de una especie rara que sólo ha podido ser estudiada a partir de la década de 1970. Puede ser considerada como un fósil viviente.
En Chile se distribuye desde la cordillera Pelada (cordillera Costera Valdiviana) hasta la isla de Chiloé, y espacios continentales al norte de la misma.
En Argentina solo se la encuentra en las estribaciones de los Andes del extremo occidental del parque nacional Nahuel Huapi, habitando en la selva valdiviana de la zona de Puerto Blest.
El cuerpo está cubierto por pelo suave y lacio, de color pardo oscuro, uniforme en toda la superficie corporal y ausente de marcas significativas. El aspecto general es muy similar al de las demás especies de ratones runchos (familia Caenolestidae), si bien el labio es característico y único entre todos los marsupiales vivos, pues el superior posee dos cúspides a ambos lados de la línea media.
La cola negruzca también diferencia a esta especie de las restantes de la familia, pues es más corta que en los otros géneros de la familia pero puede acumular depósitos de tejido adiposo para posterior utilización durante las épocas en las que los rigores climáticos dificultan la consecución de alimentos. Las hembras poseen siete mamas, la primera de las cuales se localiza en posición medial y las restantes a ambos lados de la línea media abdominal. Carecen de marsupio.
La dieta de estos animales parece ser muy similar a la de las otras especies del orden, compuesta sobre todo por invertebrados y probablemente pequeños vertebrados.
Se han estudiado hembras lactantes en los meses de verano y otoño austral. No se dispone de más datos sobre la fisiología reproductiva de esta especie.
Apenas hay datos sobre el comportamiento de los individuos de esta especie. La mayor parte de los ejemplares capturados, lo han sido sobre el suelo, cerca de los troncos de los árboles, o en zonas de densa cubierta vegetal. También próximos a las salidas de madrigueras subterráneas cercanas a troncos caídos o en pie. Se sospecha que se trata de una especie con hábitos nocturnos y terrestres. Durante los duros meses de invierno esta especie parece entrar en un estado de torpor que no llega al letargo, ya que algunos ejemplares han sido capturados sobre terrenos nevados.
Se reconocen dos subespecies de Rhyncholestes raphanurus.[2]
La comadrejita trompuda o ratón runcho trompudo (Rhyncholestes raphanurus) es una especie de marsupial paucituberculado de la familia Caenolestidae (únicos representantes vivientes del orden Paucituberculata), y la única del género Rhyncholestes. Es endémica de Chile. Habita en bosques densos y templados, hasta altitudes de 1100 msnm. Se trata de una especie rara que sólo ha podido ser estudiada a partir de la década de 1970. Puede ser considerada como un fósil viviente.
Rhyncholestes raphanurus Rhyncholestes generoko animalia da. Paucituberculata ordenaren barruko ugaztuna da. Caenolestidae familian sailkatuta dago.
Rhyncholestes raphanurus Rhyncholestes generoko animalia da. Paucituberculata ordenaren barruko ugaztuna da. Caenolestidae familian sailkatuta dago.
Le genre Rhyncholestes ne comprend qu'une espèce menacée de petit marsupial que l'on rencontre encore en Argentine et au Chili :
Rhyncholestes raphanurus, nommé Comadrejita Trompuda (petite belette ...) par les Chiliens.L'opossum toporagno dal naso lungo (Rhyncholestes raphanurus Osgood, 1924) è un piccolo marsupiale americano, appartenente alla famiglia Caenolestidae. È l'unica specie nota del genere Rhyncholestes.
La lunghezza varia tra 10 e 13 cm. Il corpo è coperto da pelo dritto e morbido di colore marrone scuro, uniforme in tutto il corpo. Molto simile alle altre specie di opossum toporagno, se ne differenzia per due caratteristiche: la forma del labbro superiore, dotato di due punte su ciascun lato, e la corta coda, che può accumulare grasso di riserva. Le femmine non hanno marsupio e sono dotate di sette mammelle.
Le abitudini della specie sono poco conosciute. Si ritiene che come le altre specie della famiglia si nutra soprattutto di invertebrati e forse anche di piccoli vertebrati. Si sospetta che siano animali notturni e vivano al suolo.
La specie è diffusa nell'isola Chiloé, nelle foreste del Cile continentale a nord dell'isola, e nelle zone limitrofe delle Ande argentine, fino all'altitudine di 1100 m. Abitano nella foresta temperata, soprattutto ad altitudini inferiori ai 600 m, anche se sono stati catturati esemplari fino all'altezza di 1135 m.
Molti autori distinguono due sottospecie: R. r. raphanurus, che vive nell'isola di Chiloé, e R. r. continentalis che vive sul continente.
Lo IUCN considera la specie vulnerabile
L'opossum toporagno dal naso lungo (Rhyncholestes raphanurus Osgood, 1924) è un piccolo marsupiale americano, appartenente alla famiglia Caenolestidae. È l'unica specie nota del genere Rhyncholestes.
De chiliopossummuis (Rhyncholestes raphanurus) is een zoogdier uit de familie van de Caenolestidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Osgood in 1924.
De soort komt voor in Chili en Argentinië.
Bronnen, noten en/of referentiesDe chiliopossummuis (Rhyncholestes raphanurus) is een zoogdier uit de familie van de Caenolestidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Osgood in 1924.
Rhyncholestes raphanurus é uma espécie de marsupial da família Caenolestidae. É a única espécie do gênero Rhyncholestes.[1] Pode ser encontrado no centro-sul do Chile, incluindo a ilha de Chiloé, e recentemente foi capturado um exemplar na Argentina.[2]
Duas subespécies são reconhecidas: a nominal e a R. r. continentalis.[1] Bublitz, em 1987, considerou a continentalis como uma espécie distinta, entretanto, ela foi sinonimizada com a raphanurus, e considerada uma subespécie por Gardner (2005).
Rhyncholestes raphanurus é uma espécie de marsupial da família Caenolestidae. É a única espécie do gênero Rhyncholestes. Pode ser encontrado no centro-sul do Chile, incluindo a ilha de Chiloé, e recentemente foi capturado um exemplar na Argentina.
Duas subespécies são reconhecidas: a nominal e a R. r. continentalis. Bublitz, em 1987, considerou a continentalis como uma espécie distinta, entretanto, ela foi sinonimizada com a raphanurus, e considerada uma subespécie por Gardner (2005).
Chileinkanäbbmus eller Chiles inkanäbbmus[2] (Rhyncholestes raphanurus) är ett pungdjur i familjen inkanäbbmöss som förekommer i Sydamerika.
Arten påminner om möss eller näbbmöss men är inte släkt med dem. Den mjuka pälsen har på ryggen och buken en mörkbrun färg, svansen är svart. Kroppslängden ligger mellan 11 och 13 cm och därtill kommer en 7 till 9 cm lång svans. Vikten ligger vid 21 gram. Honor saknar pung (Marsupium) och har sju spenar.[3]
Chileinkanäbbmus lever på ön Chiloé och på det angränsande chilenska fastlandet. En individ hittades i Argentina. Habitatet utgörs av tempererade skogar i låglandet och på bergstrakter upp till 1100 meter över havet.[1]
Arten vistas antagligen främst på marken och den är aktiv på natten. Födan utgörs av insekter, daggmaskar, svampar och växtdelar. Vissa fynd indikerar att den lagrar fett i svansen före vintern. Under vinter faller den ibland i dvala (torpor) men på snön har den också påträffats. Honor som diade sina ungar hittades nästan över hela året.[3]
Artens hotas huvudsakligen genom skogsavverkningar. Då populationen minskar listas Chileinkanäbbmus av IUCN som nära hotad (NT).[1]
Chileinkanäbbmus eller Chiles inkanäbbmus (Rhyncholestes raphanurus) är ett pungdjur i familjen inkanäbbmöss som förekommer i Sydamerika.
Розмір тіла може знаходитися в діапазоні від 10 до 13 см. Їх черевні й спинні частини тіла мають темно-коричневий або сірий колір. Хвіст коротший, ніж довжина голови й тіла. Вуха маленькі й округлі. Самці мають конічні, однокореневі верхні ікла, а самиці мають подвійні укорінені ікла, що нагадують премоляри.
Цей вид обмежується південно-центральною частиною Чилі, в тому числі островом Чилое. Цей вид має широкий діапазон висот, від рівня моря (Чилое) до 1 135 м над рівнем моря в провінції Осомо. Цей вид живе в лісах помірного пояса. Тільки два екземпляри були спіймані в Аргентині.
Веде в основному наземний і нічний спосіб життя, живиться на лісовому ґрунті безхребетними (54% раціону) і дощовими черв'яками (7%). Іншим основним компонентом їх раціону є рослинний матеріал і гриби (39%). Вони, ймовірно, мають поганий зір через їх нічну активність і малі очі. Дослідження їх мозку показують великі нюхові цибулини, що вказує на гострий нюх. Як і більшість дрібних ссавців, вони, ймовірно, є трофічною базою для нічних хижаків.
Мало що відомо про систему спарювання. Самиці не мають мішка і мають від п'яти до семи сосків. Є дані про те, що самиці здатні розмножуватися в будь-який час року, бо під час лактації самиці були спіймані у лютому, березні, травні, жовтні, листопаді та грудні. Самці, як вважають, репродуктивно активні цілий рік також. Мало що відомо про батьківську турботу. Через їх малі розміри тіла, цілком ймовірно, що вони не живуть більше, ніж кілька років.
Вирубка лісу є головною загрозою для цього виду. Цей вид зустрічається в ряді природоохоронних територій.
Rhyncholestes raphanurus là một loài động vật có vú trong họ Caenolestidae, bộ Paucituberculata. Loài này được Osgood mô tả năm 1924.[2]
Phương tiện liên quan tới Rhyncholestes raphanurus tại Wikimedia Commons
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Bài viết liên quan đến động vật có vú này vẫn còn sơ khai. Bạn có thể giúp Wikipedia bằng cách mở rộng nội dung để bài được hoàn chỉnh hơn. Rhyncholestes raphanurus là một loài động vật có vú trong họ Caenolestidae, bộ Paucituberculata. Loài này được Osgood mô tả năm 1924.
Rhyncholestes raphanurus
Osgood, 1924
Чилийский ценолест[1] (лат. Rhyncholestes raphanurus) — вид сумчатых млекопитающих из семейства ценолестовых (Caenolestidae), единственный в роде Rhyncholestes. Водится в лесах умеренного климата на юге Чили и на острове Чилоэ.
Длина тела 11—12 см, хвоста 6—8 см. Сосков 5. Лицевой отдел черепа длиннее и уже, чем у других ценолестовых. Ведёт наземный ночной образ жизни. Питается мелкими беспозвоночными. Вид занесён в Красную книгу МСОП со статусом «близкий к уязвимому».
Вид разделяют на 2 подвида[2]:
Чилийский ценолест (лат. Rhyncholestes raphanurus) — вид сумчатых млекопитающих из семейства ценолестовых (Caenolestidae), единственный в роде Rhyncholestes. Водится в лесах умеренного климата на юге Чили и на острове Чилоэ.
Длина тела 11—12 см, хвоста 6—8 см. Сосков 5. Лицевой отдел черепа длиннее и уже, чем у других ценолестовых. Ведёт наземный ночной образ жизни. Питается мелкими беспозвоночными. Вид занесён в Красную книгу МСОП со статусом «близкий к уязвимому».
R. r. continentalis Bublitz, 1987
R. r. raphanurus Osgood, 1924
智利袋鼠（学名 Rhyncholestes raphanurus）也叫长鼻鼩负鼠，是现存六种鼩负鼠之一。它们主要生活在智利和阿根廷海拔約1100米高的常绿温带森林中。夜棲、雜食性，體長約7至8吋。目前已被列为濒危动物。
智利袋鼠（学名 Rhyncholestes raphanurus）也叫长鼻鼩负鼠，是现存六种鼩负鼠之一。它们主要生活在智利和阿根廷海拔約1100米高的常绿温带森林中。夜棲、雜食性，體長約7至8吋。目前已被列为濒危动物。
긴코새도둑주머니쥐(Rhyncholestes raphanurus) 또는 칠레새도둑주머니쥐는 새도둑주머니쥐과에 속하는 6종의 현존하는 새도둑주머니쥐의 하나이다.[2] 칠레와 아르헨티나의 온대 상록수 원시림 숲에서 발견되는 작은 유대류이다. 긴코새도둑주머니쥐속(Rhyncholestes)의 유일한 종이다.
