Legítima dispersión de semillas Ugni molinae Turcz. (Myrtaceae), por monito del monte, Dromiciops gliroides

Mora, Juan Pablo; Soto‐Gamboa, Mauricio

doi:10.4067/s0717-66432011000200018

Cited by 12 publications

(10 citation statements)

References 21 publications

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“…These findings suggest that D. gliroides has a well-defined suite of life history traits that remain mostly constant across its distribution range (comprising approximately 800 km from north to south, and approximately 300 km form east to west) despite strong habitat structural differences, even within habitats dominated by exotic tree species. Considering that D. gliroides is an important seed disperser for at least 16 native plant species at the South American temperate rainforests (Amico et al 2009;Mora & Soto-Gamboa 2011), its presence in abandoned forestry plantations may constitute an opportunity for the natural recovery of degraded lands.…”

Section: Discussionmentioning

confidence: 99%

Beyond habitat structure: Landscape heterogeneity explains the monito del monte (Dromiciops gliroides) occurrence and behavior at habitats dominated by exotic trees

Salazar

Fontúrbel

2016

Integrative Zoology

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Habitat structure determines species occurrence and behavior. However, human activities are altering natural habitat structure, potentially hampering native species due to the loss of nesting cavities, shelter or movement pathways. The South American temperate rainforest is experiencing an accelerated loss and degradation, compromising the persistence of many native species, and particularly of the monito del monte (Dromiciops gliroides Thomas, 1894), an arboreal marsupial that plays a key role as seed disperser. Aiming to compare 2 contrasting habitats (a native forest and a transformed habitat composed of abandoned Eucalyptus plantations and native understory vegetation), we assessed D. gliroides' occurrence using camera traps and measured several structural features (e.g. shrub and bamboo cover, deadwood presence, moss abundance) at 100 camera locations. Complementarily, we used radio telemetry to assess its spatial ecology, aiming to depict a more complete scenario. Moss abundance was the only significant variable explaining D. gliroides occurrence between habitats, and no structural variable explained its occurrence at the transformed habitat. There were no differences in home range, core area or inter-individual overlapping. In the transformed habitats, tracked individuals used native and Eucalyptus-associated vegetation types according to their abundance. Diurnal locations (and, hence, nesting sites) were located exclusively in native vegetation. The landscape heterogeneity resulting from the vicinity of native and Eucalyptus-associated vegetation likely explains D. gliroides occurrence better than the habitat structure itself, as it may be use Eucalyptus-associated vegetation for feeding purposes but depend on native vegetation for nesting.

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Section: Discussionmentioning

confidence: 99%

Beyond habitat structure: Landscape heterogeneity explains the monito del monte (Dromiciops gliroides) occurrence and behavior at habitats dominated by exotic trees

Salazar

Fontúrbel

2016

Integrative Zoology

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“…Another example is the hemiparasitic mistletoe Tristerix corymbosus, which constitutes a substantial part of D. gliroides diet (Amico & Aizen 2000;Amico et al 2009), is not present in the Chaitén-Futaleufú region. Those individuals may be feeding on the fleshy-fruited shrub Ugni molinae, which is highly abundant in these new locations (Mora & Soto-Gamboa 2011), and might be explaining its persistence below T. corymbosus' distribution. These differences may alter resource availability for D. gliroides, consequently changing its diet and metabolic requirements (Cortés et al 2011) in ways that are yet to be explored.…”

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confidence: 95%

Southernmost records of Dromiciops gliroides: extending its distribution beyond the Valdivian rainforest

et al. 2019

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The geographic range of a species is often limited by sampling approaches, underestimating the actual distribution. This is likely the case of Dromiciops gliroides (Microbiotheria), an endemic marsupial from southern South America. We used camera-traps to record D. gliroides for the first time in Chaitén and Futaleufú (southern Chile), expanding its known distribution 100 km to the south. Climate and forest composition in this area differs from the typical Valdivian rainforest. Activity assessments show a narrow activity patterns compared to northern populations.

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“…Studying movement behavior is also important to understand other ecological processes such as feeding behavior. Dromiciops gliroides is a generalist frugivore with a key ecosystem role as the primary seed disperser of at least 16 native plant species [42,43]. Thus, its spatial behavior also should have community-level consequences as both home range and movement speed largely determines seed deposition patterns [44,45].…”

Section: Discussionmentioning

confidence: 99%

Movement behavior of the Monito del monte (Dromiciops gliroides): new insights into the ecology of a unique marsupial

Pérez

Fontúrbel

Guevara

et al. 2019

Rev. Chil. de Hist. Nat.

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Background: Behavior and activity patterns largely determine animal's fitness and their ecological roles. Those patterns depend on many factors, being body mass, sex and age the most relevant in mammals. Particularly, those factors altogether with environmental conditions could influence movement behavior of mammals that hibernate, such as the Monito del monte (Dromiciops gliroides). Methods: To evaluate its movement behavior and activity we radio-tracked D. gliroides 12 individuals (8 females and 4 males, corresponding to 5 adults and 7 sub-adults) during the austral summer. With the estimated locations we estimated home ranges, core areas and their relationship with body mass. We also assessed movement speed during early (19:00 to 01:00 h), peak (01:00 to 03:00 h) and late (03:00 to 07:00 h) activity periods. This study was conducted at the San Martín experimental forest (Valdivia, southern Chile). Results: Estimated home range areas were 1.04 ± 0.20 ha, and core areas were 0.27 ± 0.06 ha; we found no significant differences between males and females, nor between adults and sub-adults. Home range and core areas were independent of body mass in females but showed positive relationships in males. Core area overlap was larger between sub-adult and adult individuals (35%) than between adult males and females (13%). Average movement D. gliroides speed was 1.45 m/min, reaching its lowest value during the peak activity period (01:00 to 03:00 h), but being faster during early and late activity periods. Those speed differences may be related to travelling and foraging activities. Conclusion: Home range and core areas estimated here showed a large variability, which can be related to environmental factors. Home range size was positively correlated with body mass on males but not on females. Also, lower movement speeds at the peak activity period suggest that D. gliroides concentrates feeding activities at this time. As D. gliroides disperses the seeds of at least 16 native plant species, its movement behavior also has important consequences at the community level.

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Legítima dispersión de semillas Ugni molinae Turcz. (Myrtaceae), por monito del monte, Dromiciops gliroides

Abstract: Legítima dispersión de semillas

Cited by 12 publications

References 21 publications

Beyond habitat structure: Landscape heterogeneity explains the monito del monte (Dromiciops gliroides) occurrence and behavior at habitats dominated by exotic trees

Beyond habitat structure: Landscape heterogeneity explains the monito del monte (Dromiciops gliroides) occurrence and behavior at habitats dominated by exotic trees

Southernmost records of Dromiciops gliroides: extending its distribution beyond the Valdivian rainforest

Movement behavior of the Monito del monte (Dromiciops gliroides): new insights into the ecology of a unique marsupial

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