Activity patterns of two species of <i>Nesomys</i> (Muridae: Nesomyinae) in a Madagascar rain forest

Ryan, James; Creighton, G.K.; Emmons, Louise H.

doi:10.1017/s0266467400007021

Cited by 18 publications

(11 citation statements)

References 6 publications

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“…Patterns of habitat utilization by small mammals may be investigated by using spool-and-line devices (Miles et al 1981;Briani et al 2001). Although used in some ecological studies (Ryan et al 1993; Key and Woods 1996;Briani et al 2001;Loretto and Vieira 2005) the potential of this technique for the acquisition of ecological data of small mammals has still not been adequately exploited. In the Cerrado information on small-mammal microhabitat utilization has been obtained by using standard methods of captures at trapping stations where environmental variables are measured (e.g.…”

Section: Introductionmentioning

confidence: 99%

Microhabitat selection and daily movements of two rodents (Necromys lasiurus and Oryzomys scotti) in Brazilian Cerrado, as revealed by a spool-and-line device

et al. 2005

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Studies on patterns of habitat use by mammals are necessary for understanding the mechanisms involved in their distribution and abundance. In this study, we used the spool-and-line method to investigate habitat utilization by two sigmodontine rodents from Brazilian Cerrado, Necromys lasiurus and Oryzomys scotti. We conducted the study in a Cerrado area in central Brazil (15156 0 S and e 47156 0 W) where the animals were caught in an area of 7.68 ha of Cerrado sensu stricto. Captured individuals were marked, equipped with a spool-and-line device, and released at the same capture point. The next day we followed the thread to record their daily movements and find their nests. To investigate microhabitat selection we compared habitat characteristics along trails of each studied species with general habitat characteristics of the study area. Although the mean 24-h distance was greater for N. lasiurus (mean 7 SE: 41.9 7 42.2 m, N=3) than for O. scotti (28.7 7 14.2 m, N=6) this difference was not significant (Mann-Whitney test, U=26, P40.6). We detected significant differences among observed microhabitats variables of both species and available microhabitat characteristics as determined by discriminant analysis (Wilks 0 s lambda F=3.001; df=14, 116; Po0.001). Both species were associated to microhabitat characteristics whose values differed markedly from the overall available habitat. Along the first canonical discriminant function of the DFA both them were associated with greater grass height than the mean height available and along the second axis N. lasiurus selected areas with higher fruit availability and more shelters than those selected by O. scotti. For stronger inferences regarding differential patterns of habitat utilization by Cerrado rodents we suggest the simultaneous use of both spool-and-line and standard trapping methods.

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Section: Introductionmentioning

confidence: 99%

Microhabitat selection and daily movements of two rodents (Necromys lasiurus and Oryzomys scotti) in Brazilian Cerrado, as revealed by a spool-and-line device

et al. 2005

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“…Each marked individual received a tracking spool (4 g, line length of 400 m) (BOONSTRA & CRAINE 1986), which was wrapped in plastic wrap and tape, then glued to the back of the animal with cyanoacrylate glue (Superbonder ® ) (RYAN et al 1993, KEY & WOODS 1996, CUNHA & VIEIRA 2002. The line of the spool was tied to an object at the point of release of each animal.…”

Section: Methodsmentioning

confidence: 99%

Use of space by the Neotropical caviomorph rodent Thrichomys apereoides (Rodentia: Echimyidae)

Almeida

Freitas

Talamoni

2013

Zoologia (Curitiba)

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“…These peculiarities of the foot structure of Nesomys testify to a greater degree of terrestriality than in R. rattus and even G. roberti. The radiotracking study of Ryan et al (1993) showed that the Nesomys species are strictly terrestrial and only rarely move along the tops of fallen logs. In our preliminary cage experiment (Lehtonen et al, unpublished) N. audeberti and N. rufus regularly but awkwardly climbed a metal net wall and a trunk at an angle of 45 degrees, but we have never captured them in trees.…”

Section: Rattus Rattus and Macrotarsomys Ingens Size And Body Formmentioning

confidence: 99%

Probability of competition between introduced and native rodents in Madagascar: An estimation based on morphological traits

Miljutin¹,

Lehtonen²

2008

Estonian J. Ecol.

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An ecomorphological approach was used to estimate the probability of interspecific competition between introduced and native rodents in Madagascar. Comparison of body size, body construction, and craniodental characters leads to the conclusion that there is a high probability of competition between introduced Rattus rattus and the following native taxa: all species of Nesomys, larger semiarboreal Eliurus species (e.g. E. tanala, E. webbi), and especially Gymnuromys roberti. The competitive relationships between introduced rodents and the remaining species of the Nesomyinae have a low probability or are improbable, except possibly for Mus musculus and the so far poorly studied Monticolomys koopmani and Voalavo species.

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Activity patterns of two species of Nesomys (Muridae: Nesomyinae) in a Madagascar rain forest

Cited by 18 publications

References 6 publications

Microhabitat selection and daily movements of two rodents (Necromys lasiurus and Oryzomys scotti) in Brazilian Cerrado, as revealed by a spool-and-line device

Microhabitat selection and daily movements of two rodents (Necromys lasiurus and Oryzomys scotti) in Brazilian Cerrado, as revealed by a spool-and-line device

Use of space by the Neotropical caviomorph rodent Thrichomys apereoides (Rodentia: Echimyidae)

Probability of competition between introduced and native rodents in Madagascar: An estimation based on morphological traits

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