Patagonian opossums are experiencing habitat loss and degradation in their preferred habitats, which are extensively modified for agriculture and grazing. They were classified as vulnerable in 1996 by the IUCN.
US Federal List: no special status
CITES: no special status
State of Michigan List: no special status
IUCN Red List of Threatened Species: least concern
There is little available information on communication and perception in Lestodelphys halli. Like all mammals, olfaction and hearing are likely to be important modes of perception. Visual and tactile cues are also important and all modes of perception may be used in interspecific communication.
Perception Channels: visual ; tactile ; acoustic ; chemical
Pellet samples have been collected during scientific studies from barn owls (Tyto alba) and Magellanic horned owls (Bubo magellanicus) which contained reminants of L. halli. Humans have also drastically imperiled this species through habitat degradation. It is also possible they serve as a food source to humans.
Known Predators:
Anti-predator Adaptations: cryptic
Patagonian opossums were previously known by the name Notodelphys halli. They are also known as Opossum De Patagonie.
There is little information on negative economic impacts of Lestodelphys halli.
Head and body length range from 132 to 144 millimeters and tail length from 81 to 99 millimeters. The hind foot measures between 15.7 and 17.7 millimeters and the length of the ear is between 18 and 22 millimeters. Patagonian opossums weigh between 70 and 80 grams.
The fur is short, soft and dense. The back is dark gray, the face is slightly darker with no markings, and the side of the body is gray. The forearms, hands, ankles, feet, and under parts are white. There is also a white patch over the eye and at the base of the ear. The ears are short, rounded, and flesh-colored. The tail is covered in short, fine hairs and is grayish brown above and whitish below. Males have an orange patch on the front of their throat and females have an orange patch around their nipples.
The dental formula is: I 5/4, C 1/1, P 3/3, and M 4/4, totaling 50 teeth. Lestodelphys halli has a shortened muzzle, crowded premolar region, and wide zygomatic arches. The auditory bullae are large. The canines are exceptionally long and nearly vertical.
Range mass: 70 to 80 g.
Range length: 213 to 243 mm.
Other Physical Features: endothermic ; heterothermic ; homoiothermic; bilateral symmetry
Sexual Dimorphism: sexes colored or patterned differently
There is little available information on the longevity of Lestodelphys halli.
Patagonian opossums are terrestrial opossums. They occur mainly in areas of shrubs, grasslands, meadows, and savannahs.
Habitat Regions: tropical ; terrestrial
Terrestrial Biomes: savanna or grassland ; chaparral
Lestodelphys halli occurs farther south than any other known living marsupial species (Marshall 1977). Patagonian opossums are endemic to Argentina, particularly in the Patagonian pampas, Chubet, Mendoza, Neuquen, Rio Negro, and Santa Cruz.
Biogeographic Regions: neotropical (Native )
Patagonian opossums often live in close proximity to human dwellings. Since their diet consists largely of small rodents, they are likely to help control rodent populations. Rodents often destroy farmers crops and are carriers of many diseases. The control of rodents can have a positive economic impact because their will be less disease outbreaks and less crop damage.
Positive Impacts: controls pest population
Patagonian opossums are a significant part of the diet of barn owls (Tyto alba) and Magellanic horned owls (Bubo magellanicus). Pellet remains have been collected from roosting and nesting sights. Patagonian opossums are also predators of small rodents and birds in the ecosystems in which they live.
Unlike most didelphids, which are omnivorous, Patagonian opossums are primarily carnivorous. Their diet consists mainly of small birds and rodents. A 70 gram animal has been observed eating a 35 gram mouse. Patagonian opossums have also been captured in traps baited with dead birdd. Patagonian opossums have a shortened skull, long claws, and long canine teeth, morphologies suggestive of specialization towards carnivory. These opossums will also eat fruit and insects where they are available. During winter months they may hunt under the snow or go into torpor. They also store fat at the base of their tail.
Animal Foods: birds; mammals; insects
Plant Foods: fruit
Primary Diet: carnivore (Eats terrestrial vertebrates)
There is little available information on mating system in Lestodelphys halli. It is likely that males and females only loosely associate for mating and that mating is promiscuous or polygynous, as in other didelphids.
Female Patagonian opossums have 19 mammae. Like all marsupials, they have a relatively short gestation period followed by a lengthy period of lactation. Little information is available on the natural history of reproduction in these opossums. Because they live in temperate regions, it is likely that they breed seasonally.
Key Reproductive Features: iteroparous ; seasonal breeding ; gonochoric/gonochoristic/dioecious (sexes separate); sexual ; viviparous
There is little available information on parental investment in Lestodelphys halli. As in all mammals, females gestate and nurse their young.
Parental Investment: altricial ; pre-fertilization (Provisioning, Protecting: Female); pre-hatching/birth (Provisioning: Female, Protecting: Female); pre-weaning/fledging (Provisioning: Female)
Lestodelphys (lat. Lestodelphys) - opossumlar fəsiləsinə aid heyvan cinsi.
Oposom Patagonia (Lestodelphys halli) zo ur bronneg godellek a vev en Arc'hantina. Ar spesad nemetañ eo er genad Lestodelphys.
L'opòssum de la Patagònia (Lestodelphys halli) és l'única espècie del gènere Lestodelphys.[1] Viu a la regió de la Patagònia argentina, més al sud que qualsevol altre marsupial vivent.
L'opòssum de la Patagònia (Lestodelphys halli) és l'única espècie del gènere Lestodelphys. Viu a la regió de la Patagònia argentina, més al sud que qualsevol altre marsupial vivent.
Die Patagonische Beutelratte (Lestodelphys halli) ist eine Beutelsäugerart aus der Familie der Beutelratten (Didelphidae). Sie kommt nur in Patagonien vor und hat von allen amerikanischen Beuteltieren das südlichste Verbreitungsgebiet.
Die Patagonische Beutelratte ähnelt äußerlich leicht den Mäusen, mit denen sie aber nicht verwandt ist. Ihr dichtes, kurzes Fell ist an der Oberseite grau gefärbt, die Unterseite und die Beine sind weiß. An den Schultern und Hüften hat sie schwarze Flecken. Der Schwanz, der deutlich kürzer als der Körper ist, ist unbehaart und kann wie bei den Fettschwanzbeutelratten als Fettspeicher verwendet werden. Die Krallen sind schärfer als bei anderen Beutelratten und stellen eine Anpassung an eine bodenbewohnende Lebensweise dar. Durch den kürzeren, breiteren Schädel und die größeren Eckzähne unterscheiden sie sich von verwandten Arten. Patagonische Beutelratten erreichen eine Kopfrumpflänge von 13 bis 14 Zentimetern, der Schwanz ist 8 bis 10 Zentimeter lang. Ein Exemplar hatte ein Gewicht von 76 Gramm.
Lebensraum der Patagonischen Beutelratten sind Grasländer im südlichen Südamerika. Sie dürften hauptsächlich Bodenbewohner sein und mit ihren Krallen Baue graben. Sie leben räuberischer als andere Beutelratten und ernähren sich vorwiegend von Wirbeltieren wie Mäusen und kleinen Vögeln.
Über die Fortpflanzung ist wenig bekannt. Weibchen haben 19 Zitzen, aber keinen Beutel, so dass die Jungtiere in den ersten Lebenswochen an der Mutter hängend herumgetragen werden. Wie die übrigen Beutelratten dürften sie eine kurze Tragzeit und eine hohe Wurfgröße haben.
Die Art ist nur von wenigen Exemplaren bekannt, die alle in einer relativ kleinen Region gefunden wurden. Auch wenn der Populationstrend abnehmend ist, wird sie von der IUCN als „nicht gefährdet“ (least concern) gelistet, 1996 wurde sie noch als „gefährdet“ (vulnerable) eingestuft.
Die Patagonische Beutelratte (Lestodelphys halli) ist eine Beutelsäugerart aus der Familie der Beutelratten (Didelphidae). Sie kommt nur in Patagonien vor und hat von allen amerikanischen Beuteltieren das südlichste Verbreitungsgebiet.
L-opossum tal-Patagonja (Lestodelphys halli) huwa mammiferu marsupjal tal-familja Didelphidae, nattiv tal-kontinent tal-Amerika t'Isfel.
Dan l-opossum huwa marsupjal terrestri, adattat għal ħajja mal-art u jippreferi jgħix f'abitat ta' artijiet tal-ħaxix subtropikali u tropikali baxxi xotti magħrufin bħala "pampas" (artijiet miftuħa b'ħafna arbuxelli u ħaxix għoli) fejn ikun jista' jikkaċċa.
Opossum tal-Patagonja adult għandu l-pil fin u folt ta' lewn griż skur fuq id-dahar u l-ġnub u ta' ton aktar skur fuq il-wiċċ. L-idejn, is-saqajn, man-naħa ta' taħt taż-żaqq u man-naħa ta' taħt tad-denb u t-tbajja madwar l-għajnejn u l-widnejn huma fl-abjad. Il-widnejn huma żgħar, tondi u ta' lewn il-laħam u n-naħa ta' fuq tad-denb huwa miksi b'xagħar qasir, fin ta' kulur kannella fil-griż. Ir-raġel ġeneralment ikollu tebgħa oranġjo fuq quddiem mal-gerżuma, waqt li fil-mara t-tebgħa oranġjo tinsab madwar il-bżiezel (Kalafut, 2005; Marshall, 1977; Redford and Eisenberg, 1992).
Lestodelphys halli adult kapaċi jilħaq 80 gramma u jitwal bejn 13.2 u 14.4 ċentimetri. Id-denb iqsar mil-ġisem (wieħed mil ftit opossumi li għandu denbu iqsar minn ġismu) ikun bejn wieħed u ieħor minn 8.1 sa 9.9 ċentimetri twil, is-saqajn ta' wara jkunu madwar 1.57 u mhux aktar minn 1.77 ċentimetri, filwaqt li l-widnejn ikunu bejn 1.8 u 2.2 ċentimetri kbar (Kalafut, 2005; Marshall, 1977; Redford and Eisenberg, 1992).
Dan l-opossum huwa mammiferu marsupjal karnivoru u għalkemm jiekol il-frott u l-insetti, meta jkunu disponibbli jidher biċ-ċar li d-dieta tiegħu tibbaża ħafna fuq laħam u tikkonsisti prinċipalment minn għasafar u ġrieden. Infatti fost l-opossumi, Lestodelphys halli huwa wieħed mill-aktar speċi karnivori. L-opossum tal-Patagonja ta' 70 gramma ġie rrapurtat li kien kapaċi jiekol ġurdien ta' 35 gramma (Marshall, 1977; Nowak, 1999; Redford and Eisenberg, 1992).
Dan għandu distribuzzjoni żgħira li qiegħda dejjem tiċkien fil-pajjiż tal-Arġentina biss u fil-fatt huwa speċi endemika ta' dan il-pajjiż u jinsab partikolarment fil-pampas tal-Patagonja f'Chubet, Mendoza, Neuquen, Rio Negro, u Santa Cruz. L-opossum tal-Patagonja huwa l-aktar speċi ta' marsupjal li jgħix daqshekk 'l isfel fin-Nofsinnhar (Marshall 1977).
Fuq l-opossum tal-Patagonja hemm ftit li xejn informazjoni, però, peress li jgħix f'żoni temperati huwa maħsub li jirriproduċi staġunalment jew fi żminijiet limitati matul is-sena. Il-mara ta'din l-ispeċi m'għandix marsupju bħal ħafna speċi marsupjali oħra u jkollha 19-il "mammae" jew żejżiet (Redford and Eisenberg, 1992).
L-opossum tal-Patagonja (Lestodelphys halli) huwa mammiferu marsupjal tal-familja Didelphidae, nattiv tal-kontinent tal-Amerika t'Isfel.
Dan l-opossum huwa marsupjal terrestri, adattat għal ħajja mal-art u jippreferi jgħix f'abitat ta' artijiet tal-ħaxix subtropikali u tropikali baxxi xotti magħrufin bħala "pampas" (artijiet miftuħa b'ħafna arbuxelli u ħaxix għoli) fejn ikun jista' jikkaċċa.
The Patagonian opossum (Lestodelphys halli) is the sole species in genus Lestodelphys.[2]
The Patagonian opossum occurs further south, in Argentina, than any other living marsupial. Although distributed throughout some parts of southern Argentina, it is one of the least known mammals of South America.[3] They have been spotted near Monte Phytogeographic Province, and in Patagonia Phytogeographic Province, yet there are no records of Patagonian opossums in central Patagonia, which leads mammalogists to believe that they can only live in the Patagonian steppe. There are two areas in the Patagonian steppe where these animals are often found: the province of La Pampa and Choele Choel (northern Rio Negro Province).[4]
It is suggested that the Patagonian opossum may have emerged from the same ancestral group as Marmosa. They resemble each other closely. In the winter both types have similarly thickening at the base of the tails, where fat accumulates. Yet they do not share all aspects of their lifestyle; Patagonian opossums have a specialized way to gather and consume food, which is made possible by the shortening of their skull and jaws. The shortening occurs in the premolar region; this gives the Patagonian opossum increased biting power.[5]
The general appearance of the Patagonian opossum is similar to that of mouse opossums, except they have specialized features due to their predatorial way of life. Unlike mouse opossums, their skull has a reduced muzzle, wider zygomatic arch, as well as a crowded premolar region. Patagonian opossums have rather short fur, that are fine and soft. Their fur are usually gray, with the posterior being dark gray, the sides being a paler shade of gray, their shoulders are dark and their cheeks as well are eye region are white in color. Their ears are short, they are a pink flesh color, with the base of their ears being white. Their tails are much shorter than their head and their body.[6]
The Patagonian opossum has generally 50 teeth. 18 incisors, 4 canines (tooth), 12 premolars, and 16 molars (tooth). Their canine is exceptionally long, and they are almost completely straight and vertical. The first pair of incisors is set aside from the other incisors, yet all of the incisors remain the same size. Incisor number 1,3,4 on the bottom jaw are curved at the base, while incisor number 2 is straight.[7] The premolars increase in size from the first premolar to the third premolar. The first premolar is very reduced in size compared to the other premolars. The premolars also have a distinct set of cusp on them called the posterobasal cusp. Their molars are extremely long, combine all the length of the premolar and it will barely exceed the length of the first two molars. The upper molars are narrow in size, compared to any of the other living opossums.[6]
Being a member of the Didelphidae (opossums), Patagonian opossums feed mainly on insects and fruits, yet insects and fruits are fairly rare in far-southern habitats. The shortage of fruits and insects in southern regions has led the Patagonian opossum to feed on mainly birds and mice.[6] One specimen of Patagonian opossum was caught using a dead bird as bait; this led some researchers to believe that the Patagonian opossum lives totally on birds.[8]
The Patagonian opossum (Lestodelphys halli) is the sole species in genus Lestodelphys.
La zarigüeya o comadrejita patagónica (Lestodelphys halli) es una especie de marsupial didelfimorfo de la familia Didelphidae endémica de Argentina, donde habita en ambientes fríos y secos, especialmente en las Provincias Fitogeograficas Patagónica y del Monte, y quizás en la del Bosque Subantártico. Dada su distribución es el marsupial más austral del mundo, y se caracteriza por su baja densidad poblacional, a pesar de tener una amplia distribución geográfica.
Esta comadrejita tiene el dorso es de color gris oscuro, y la parte ventral blanca, con un anillo oscuro que rodea los ojos. Características que comparte con las especies del género Thylamys, considerado como el taxón hermano de Lestodelphys halli. Las orejas son cortas y redondeadas, y su cola corta y no prensil, presenta un engrosamiento donde puede almacenar grasa. Las hembras no tienen marsupio. Se trata de un animal terrestre y no arborícola.[1]
Hoy en día se conoce su distribución básicamente sobre la base de recolección de bolos de regurgitación de aves rapaces (egagrópilas) y trampeos. Sin embargo se ha registrado esta especie a lo largo de todo el Holoceno en numerosos sitios paleontológicos y arqueológicos. En el pasado ha tenido una distribución más amplia que la actual ya que es lo ha registrado también en Provincia de Buenos Aires.
Esta especie habita en ambientes secos, de vegetación arbustiva. Se distribuye desde la provincia de Mendoza, por el Oeste, hasta el centro-norte de Santa Cruz.[2]
La zarigüeya o comadrejita patagónica (Lestodelphys halli) es una especie de marsupial didelfimorfo de la familia Didelphidae endémica de Argentina, donde habita en ambientes fríos y secos, especialmente en las Provincias Fitogeograficas Patagónica y del Monte, y quizás en la del Bosque Subantártico. Dada su distribución es el marsupial más austral del mundo, y se caracteriza por su baja densidad poblacional, a pesar de tener una amplia distribución geográfica.
Lestodelphys halli Lestodelphys generoko animalia da. Didelphimorphia ordenaren barruko ugaztuna da. Didelphinae azpifamilia eta Didelphidae familian sailkatuta dago.
Lestodelphys halli Lestodelphys generoko animalia da. Didelphimorphia ordenaren barruko ugaztuna da. Didelphinae azpifamilia eta Didelphidae familian sailkatuta dago.
Lestodelphys halli
L’Opossum de Patagonie (Lestodelphys halli) est une espèce de marsupiaux, la seule du genre Lestodelphys. C'est un opossum qui vit uniquement dans le Sud de l'Argentine où on le rencontre dans les régions froides et sèches, en particulier en Patagonie et, peut-être, dans la forêt subantarctique. Compte tenu de sa distribution, c'est le marsupial qui vit le plus au sud de tous les marsupiaux et il se caractérise par une faible densité démographique, en dépit d'une large répartition géographique.
Il a le dos est gris foncé et le ventre blanc avec un anneau noir autour des yeux. Caractéristiques qu'il partage avec le genre Thylamys, considéré comme le taxon sœur. Les oreilles sont courtes et arrondies, et la queue, courte et non-préhensile, peut stocker de la graisse. Les femelles n'ont pas de marsupium. Il s'agit d'un animal terrestre plutôt qu'arboricole.
Aujourd'hui, sa distribution est connue principalement par la collecte des boules de régurgitation des oiseaux de proie et le piégeage. Cependant, cette espèce était répandue durant l'Holocène car on trouve des restes dans de nombreux sites paléontologiques et archéologiques. Dans le passé, il a eu une diffusion plus large qu'à présent car il a également été retrouvé dans la province de Buenos Aires.
Bien que sa population soit en baisse, il est considéré par l'UICN comme « préoccupation mineure »; en 1996, il était encore classé comme « vulnérable ».
Lestodelphys halli
L’Opossum de Patagonie (Lestodelphys halli) est une espèce de marsupiaux, la seule du genre Lestodelphys. C'est un opossum qui vit uniquement dans le Sud de l'Argentine où on le rencontre dans les régions froides et sèches, en particulier en Patagonie et, peut-être, dans la forêt subantarctique. Compte tenu de sa distribution, c'est le marsupial qui vit le plus au sud de tous les marsupiaux et il se caractérise par une faible densité démographique, en dépit d'une large répartition géographique.
Lestodelphys (binomen a Tate anno 1934) est genus animalium familiae Didelphidae.
Haec stipula ad biologiam spectat. Amplifica, si potes! Taxinomia et Latinitas huius stipulae dubiae suntLestodelphys (binomen a Tate anno 1934) est genus animalium familiae Didelphidae.
De Patagonische buidelrat (Lestodelphys halli) is een zoogdier uit de familie van de Didelphidae. De wetenschappelijke naam van de soort werd voor het eerst geldig gepubliceerd door Thomas in 1921.
Bronnen, noten en/of referenties
A cuíca-da-Patagônia (vernáculo artificial derivado das línguas espanhola e inglesa) (Lestodelphys halli) é uma espécie de marsupial da família dos didelfiídeos (Didelphidae). É endêmica da Argentina, onde pode ser encontrada de Mendoza a Santa Cruz. É a única espécie descrita para o gênero Lestodelphys. O L. dalli é o marsupial distribuído mais ao sul no continente americano, e um dos menos conhecidos quanto a ecologia e história natural.[2]
A cuíca-da-Patagônia (vernáculo artificial derivado das línguas espanhola e inglesa) (Lestodelphys halli) é uma espécie de marsupial da família dos didelfiídeos (Didelphidae). É endêmica da Argentina, onde pode ser encontrada de Mendoza a Santa Cruz. É a única espécie descrita para o gênero Lestodelphys. O L. dalli é o marsupial distribuído mais ao sul no continente americano, e um dos menos conhecidos quanto a ecologia e história natural.
Patagonisk pungråtta (Lestodelphys halli) är en art i familjen pungråttor och den enda arten i släktet Lestodelphys.[2] Djuret lever bara i argentinska Patagonien och har på så sätt det sydligaste utbredningsområdet av alla pungråttor. Regionen begränsas i norr av provinsen Mendoza och i syd av provinsen Santa Cruz.[1] Artepitet i det vetenskapliga namnet hedrar T. H. Hall som var samlare av zoologiska föremål. Artens holotyp kommer från hans samling.[3]
Den patagoniska pungråttan liknar musen i utseende men är inte närmare släkt med den. Den korta, täta pälsen har på ovansidan grå färg; undersidan och extremiteterna är vita. Vid skuldran och höfterna finns svarta fläckar. Svansen är betydligt kortare än övriga kroppen. Arten kan, liksom arterna i släktet Thylamys, spara fett i svansen. Klorna är, som anpassning till livet på marken, bättre utvecklade än hos flera andra pungråttor. Djuret kännetecknas dessutom av en kort, bred skalle och större hörntänder. Patagonisk pungråtta når en kroppslängd på mellan 13 och 14 centimeter och därtill kommer en 8 till 10 centimeter lång svans. En uppmätt individ hade en vikt på 76 gram.[4]
Habitatet utgörs av gräslandet i Sydamerika.[1] Det antas att den främst vistas på marken och att den bygger underjordiska bon med sina klor. Den jagar mer än andra pungråttor och livnär sig främst av mindre ryggradsdjur som gnagare och fåglar.[4] Artens syn, hörsel och känselsinnet vid morrhåren är mycket bra utvecklade.[5]
Troligen håller djuret vinterdvala[5] eller den faller i dvala (torpor) vid kyligt väder.[6]
Nästan ingenting är känt om artens sätt att fortplanta sig. Honor har 19 spenar men ingen pung (Marsupium) och bär sina ungar öppet på buken. Enligt bedömning är dräktigheten liksom hos andra pungråttor kort och per kull föds många ungdjur.[6]
Kroppsdelar av arten hittades i spybollar av ugglor.[6]
Arten är bara känd från ett begränsat område och på grund av människans inverkan minskar beståndet ytterligare. IUCN bedömer dock arten som livskraftig (LC).[1]
Patagonisk pungråtta (Lestodelphys halli) är en art i familjen pungråttor och den enda arten i släktet Lestodelphys. Djuret lever bara i argentinska Patagonien och har på så sätt det sydligaste utbredningsområdet av alla pungråttor. Regionen begränsas i norr av provinsen Mendoza och i syd av provinsen Santa Cruz. Artepitet i det vetenskapliga namnet hedrar T. H. Hall som var samlare av zoologiska föremål. Artens holotyp kommer från hans samling.
Lestodelphys halli là một loài động vật có vú, loài duy nhất trong chi Lestodelphys, thuộc họ Didelphidae, bộ Didelphimorphia. Loài này được Thomas mô tả năm 1921.[2]
Phương tiện liên quan tới Lestodelphys halli 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. Lestodelphys halli là một loài động vật có vú, loài duy nhất trong chi Lestodelphys, thuộc họ Didelphidae, bộ Didelphimorphia. Loài này được Thomas mô tả năm 1921.
草地負鼠屬（Lestodelphys，草地負鼠），哺乳綱的一屬，而與草地負鼠屬（草地負鼠）同科的動物尚有粗尾負鼠屬（粗尾負鼠）、袋負鼠屬、蹼足負鼠屬（蹼足負鼠）等之數種哺乳動物。
파타고니아주머니쥐(Lestodelphys halli)는 주머니쥐목에 속하는 유대류의 일종이다. 파타고니아주머니쥐속(Lestodelphys)의 유일종이다.[2]
파타고니아주머니쥐는 현존하는 유대류 중에서 가장 남쪽인 아르헨티나 남부 지역에서 발견된다. 남부 아르헨티나의 전 지역에 분포하지만, 파타고니아주머니쥐는 남아메리카 유대류 중에서 가장 덜 알려진 종의 하나이다.[3]
다음은 주머니쥐과의 계통 분류이다.[4]
주머니쥐과 양털주머니쥐아과 주머니쥐아과 쇠주머니쥐족 주머니쥐족 살찐꼬리쇠주머니쥐족
