Observations on the eruption of the permanent incisor teeth of farmed Javan rusa deer (<i>Cervus timorensis russa</i>) in New Caledonia

Bianchi, Marzia; Hurlin, J.C.; Lebel, Sophie; Chardonnet, Philippe

doi:10.1080/00480169.1997.36018

Cited by 3 publications

(2 citation statements)

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“…Consistency between the two iterations was high for both methods, but in both cases discrepancies were more likely to occur in older animals (Table 1). Previous studies have found that accurate age estimation by TEW is more difficult in older than in younger animals (Jacobson & Reiner 1989, Ratcliffe & Mayle 1992, Bianchi et al 1997). In our study the animals with assigned ages that varied by two years using TEW were estimated to be 3‐5 years old or older.…”

Section: Resultsmentioning

confidence: 98%

“…In many wild ungulate species (e.g. Javan rusa deer Cervus timorensis russa, red deer Cervus elaphus, fallow deer Dama dama and roe deer Capreolus capreolus ), eruption of permanent teeth is complete by 18‐36 months, so aging beyond this limit is more difficult (Brown & Chapman 1991b, Brown & Chapman 1991a, Ratcliffe & Mayle 1992, Moore, Cahill, Kelly & Hayden 1995, Bianchi, Hurlin, Lebel & Chardonnet 1997, Langvatn & Meisingset 2001).…”

Section: Methods For Age Estimation In Ungulatesmentioning

confidence: 99%

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A comparison of age estimation methods for the saiga antelope Saiga tatarica

2003

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Age estimation is particularly crucial for the conservation of the saiga antelope Saiga tatarica, but modern laboratory methods for aging have not previously been applied to this species. There is an urgent need for evaluation of the techniques that could be used for age estimation in order that long‐term ecological data sets can be correctly interpreted and conservation advice given. We evaluated the repeatability, practical feasibility and comparability of three techniques for age estimation of saiga antelopes; the tooth sectioning technique (TS), the tooth eruption and wear technique (TEW), and a visual aging technique routinely used in field studies. We found that TS and TEW gave repeatable results, and agreed well. The visual method underestimated the age of males compared to laboratory methods. It assigned animals consistently to the age class of at least one year old, but less consistently to the age class less than one year old. Although studies of known‐age animals are needed to evaluate precision and accuracy of these methods, we suggest that either TS or TEW would be suitable for aging saiga antelopes, with the choice being determined by practicalities such as the availability of the necessary expertise and equipment.

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Section: Resultsmentioning

confidence: 98%

Section: Methods For Age Estimation In Ungulatesmentioning

confidence: 99%

A comparison of age estimation methods for the saiga antelope Saiga tatarica

2003

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Landscape structure does not hinder the dispersal of an invasive herbivorous mammal in the New Caledonian biodiversity hotspot

Frantz,

Luttringer,

Colyn

et al. 2023

Eur J Wildl Res

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Biological invasions are a major threat to biodiversity and have particularly devastating impacts on island ecosystems. The New Caledonia archipelago is considered a biodiversity hotspot due to its diverse native flora. Javan rusa deer (Rusa timorensis) were introduced to New Caledonia in 1870 and the population consists of several hundred thousand individuals today. They directly threaten rare endemic species and affect the composition and structure of the vegetation. While a rusa deer management plan has identified ten priority areas for deer control operations, removing deer could be offset by the dispersal of animals back into the control areas. Here, we genotyped 628 rusa deer using 16 microsatellite markers to analyse the genetic structure of the animals in New Caledonia. We aimed to assess fine-scale genetic structure, to identify natural barriers to deer movement and to assess functional connectivity by optimising individual-based landscape resistance models. Our results suggested that rusa deer formed a single genetic population on the main New Caledonian island. The isolation-by-distance pattern suggested that female dispersal was limited, whereas males had larger dispersal distances. We assessed functional connectivity using different genetic distance metrics and all models performed poorly (mR2 ≤ 0.0043). Landscape features thus hardly affected deer movement. The characteristics of our results suggested that they were not an artefact of the colonisation history of the species. Achieving an effective reduction of deer population sizes in specific management areas will be difficult because of the deer’s high dispersal capabilities and impossible without very substantial financial investment.

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Home range and habitat use of introduced rusa deer(Cervus timorensis russa)in a mosaic of savannah and native sclerophyll forest of New Caledonia

Spaggiari¹,

Garine‐Wichatitsky²

2006

New Zealand Journal of Zoology

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Observations on the eruption of the permanent incisor teeth of farmed Javan rusa deer (Cervus timorensis russa) in New Caledonia

Cited by 3 publications

References 1 publication

A comparison of age estimation methods for the saiga antelope Saiga tatarica

A comparison of age estimation methods for the saiga antelope Saiga tatarica

Landscape structure does not hinder the dispersal of an invasive herbivorous mammal in the New Caledonian biodiversity hotspot

Home range and habitat use of introduced rusa deer(Cervus timorensis russa)in a mosaic of savannah and native sclerophyll forest of New Caledonia

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