Notes on the activity patterns of 12 species of southern African rodents and a new design of activity monitor

Perrin, M.R.

doi:10.1080/02541858.1981.11447763

Cited by 26 publications

(16 citation statements)

References 19 publications

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“…Cheeseman (1977), apres quelques heures d'habituation, a enregistre chaque animal durant 5 a 7 jours. Perrin (1981) indique comme nous une periode d'acclimatation de 48 h, mais effectue des enregistrements plus longs : 7 jours.…”

Section: Materiel Et Methodesunclassified

“…Au laboratoire on peut analyser les rythmes d'activite de groupes dans des enclos, ou d'individus isoles dans des cages. La plupart des dispositifs experimentaux sont bases sur l'emploi de cellules photo-electriques couplees a des enregistreurs automatiques (Veenstra 1958 ;Perrin 1981 ;Lodewijckx et al 1984 ;Requirand et al 1987). Toutefois, d'autres dispositifs ont ete employes ; liaison entre un haut-parleur et le plancher de la cage enfin d'enregistrer les bruits de deplacements (Mony et al 1978), cages placees en bascule et appuyant ainsi sur des contacteurs ä chaque mouvement de l'animal (Natalini 1978) ou encore capteurs de pression places en differents endroits de la cage (Cheeseman 1977 ;Nevo et al 1981).…”

Section: Introductionunclassified

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Rythmes d'activité chez six especes de Murides du Senegal appartenant aux genres Mastomys, Arvicanthis, Myomys et Dasymys

Duplantier¹,

Granjon

1990

Mammalia

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Activity patterns of six sympatric species of Murids in Senegal have been studied in individual cages : Mastomys erythroleucus, M. huberti, M. cf natalensis, Arvicanthis niloticus, Myomys daltoni and Dasymys incomtus. Individual variability is very important, and we don't observe significant differences concerning total daily activity between males and females of the three species of Mastomys, nor between the different species. Concerning the activity pattern, A. niloticus differs from the other species by having an activity both diurnal and nocturnal. Only commensal individuals of M. erythroleucus show a similar pattern, whereas feral individuals of this species as well as those of the four other species are mainly nocturnal. Within the M. erythroleucus species, we have not observed significant differences between insular and continental individuals. Resume. -Nous avons etudie en cages individuelles les rythmes d'activite de 6 especes de Murides sympatriques au Senegal : Mastomys erythroleucus, M. huberti, M. cf natalensis, Arvicanthis niloticus, Myomys daltoni et Dasymys incomtus. La variabilite individuelle est tres forte, et de ce fait, nous n'avons pas observe de differences significatives pour l'activite totale journaliere entre males et femelies des 3 especes de Mastomys, ni entre les differentes especes. En ce qui concerne les rythmes d'activite, A. niloticus se distingue par une activite a la fois diurne et nocturne. Seuls des individus commensaux de l'espece M. erythroleucus presentent un tel rythme. Les individus sauvages de cette espece, comme ceux des 4 autres, sont essentiellement nocturnes. Au sein de l'espece Μ. erythroleucus, nous n'avons pas observe de differences notables entre individus insulaires et continentaux.

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Section: Materiel Et Methodesunclassified

Section: Introductionunclassified

Rythmes d'activité chez six especes de Murides du Senegal appartenant aux genres Mastomys, Arvicanthis, Myomys et Dasymys

Duplantier¹,

Granjon

1990

Mammalia

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“…Davis, 1973;De Graaff, 1981;. Perrin (1981a) has referred to O. irroratus as mesically adapted. This was confirmed by who showed that the distribution of O. irroratus on a study area at the Dargle State Forest, Natal Midlands, was negatively correlated with increasing distance from a perennial stream.…”

Section: General Habitat Preferencesmentioning

confidence: 96%

“…Davis, 1973;Perrin, 1981a), but it is primarily crepuscular, with peaks of activity around dawn and dusk (R.M. Davis, 1973).…”

Section: Diel Activitymentioning

confidence: 97%

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Rodent Damage in Southern African Plantations: A Review

Willan

1984

South African Forestry Journal

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SYNOPSISThis paper reviews the problem of damage by rodents to young exotic trees, mainly pines, in Southern Africa. Damage is mainly attributed to two species, the vlei rat Otomys irroratus and the four-striped mouse Rhabdomys pumilio. Aspects of the biology of these two species pertinent to their control are outlined, and various methods of preventing or at least reducing the incidence of damage are discussed. Poisoning appears inefficient as a means of control; it has the serious disadvantage of potentially eliminating predators, and thus may be counterproductive in the medium and long term. Selective removal trapping of target species coupled with strict protection of predators would provide a practical interim alternative to poisoning. It appears essential that intensive applied research be initiated in this field.

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The inappropriate use of time‐to‐independence biases estimates of activity patterns of free‐ranging mammals derived from camera traps

Peral

Landman

Kerley

2022

Ecology and Evolution

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Measuring and comparing activity patterns provide key insights into the behavioral trade-offs that result in animal activity and their extrinsic and intrinsic drivers.Camera traps are a recently emerged source of data for sampling animal activity used to estimate activity patterns. However, nearly 70% of studies using such data to estimate activity patterns apply a time-to-independence data filter to discard appreciable periods of sampling effort. This treatment of activity as a discrete event emerged from the use of camera trap data to estimate animal abundances, but does not reflect the continuous nature of behavior, and may bias resulting estimates of activity patterns. We used a large, freely available camera trap dataset to test the effects of time to independence on the estimated activity of eight medium-to large-sized African mammals. We show that discarding data through the use of time-to-independence filters causes substantial losses in sample sizes and differences in the estimated activity of species. Activity patterns estimated for herbivore species were more affected by the application of time-to-independence data filters than carnivores, this extending to estimates of potential interactions (activity overlap) between herbivore species. We hypothesize that this pattern could reflect the typically more abundant, social, and patch-specific foraging patterns of herbivores and suggest that this effect may bias estimates of predator-prey interactions. Activity estimates of rare species, with less data available, may be particularly vulnerable to loss of data through the application of time-to-independence data filters. We conclude that the application of time-toindependence data filters in camera trap-based estimates of activity patterns is not valid and should not be used.

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Notes on the activity patterns of 12 species of southern African rodents and a new design of activity monitor

Cited by 26 publications

References 19 publications

Rythmes d'activité chez six especes de Murides du Senegal appartenant aux genres Mastomys, Arvicanthis, Myomys et Dasymys

Rythmes d'activité chez six especes de Murides du Senegal appartenant aux genres Mastomys, Arvicanthis, Myomys et Dasymys

Rodent Damage in Southern African Plantations: A Review

The inappropriate use of time‐to‐independence biases estimates of activity patterns of free‐ranging mammals derived from camera traps

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