Analysis of the diet of Natterer's bat <i>Myotis nattereri</i> and the common long‐eared bat <i>Plecotus auritus</i> in the West of Ireland

Shiel, C. B.; Mcaney, C. M.; Fairley, J. S.

doi:10.1111/j.1469-7998.1991.tb04766.x

Cited by 77 publications

(47 citation statements)

References 7 publications

(2 reference statements)

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“…For example, S. stercoraria is predatory on other insects, in particular Muscidae and Calliphoridae (Cotterell, 1920). S. stercoraria is also eaten by predators and is an important part of the diet of Natterer's bat, Myolis nattereri, (Shiel et al, 1991). Dung insects, in particular Aphodius spp.…”

Section: Discussionmentioning

confidence: 99%

Avermectins: a review of their impact on insects of cattle dung

Strong

1992

Bull. Entomol. Res.

117

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Avermectins administered to cattle for control of parasitic infections by injection or slow-release bolus are excreted in the faeces and have a variety of harmful effects upon Diptera and Coleoptera that develop in cow-pats: these effects are reviewed. Diptera Cyclorrhapha are severely affected, the extent of the response depending on the drug concentration in the dung. At high levels, larvae are killed or paralysed while at lower levels their metamorphosis is inhibited. At very low levels, adult emergence is reduced and a significant number of imagines show morphological abnormalities. These responses are induced by concentrations of avermectins well below levels occurring in faeces after routine treatment. Diptera Nematocera are less sensitive than Cyclorrhapha but larval and pupal development are affected at higher dose levels. Larval dung beetles and some immature adults cannot survive in the pats of recently dosed livestock. Mature adult beetles are more resistant, but contact with treated dung leads to impaired reproduction. Dung eliminated up to 5 weeks after cattle have been treated with a single injection or up to 14 days after topical dosing shows harmful activity against dung insects, and ivermectin-containing pats retain much of their toxicity after several weeks exposure on pastureland. The impact on dung insects is more pronounced and of longer duration when ivermectin is delivered daily at 40 (ig per kg cow by sustained-release bolus. Following topical or injection treatments, the rate of cow-pat degradation (measured by actual loss of biomass) is significantly delayed. When cattle are treated with a bolus delivering 40 mg ivermectin per kg cow per day, their dung remains intact on grassland for at least three months. The conclusions drawn from the various papers on these effects are compared and contrasted. In particular, attention is drawn to the general failure to recognize the importance of delayed reactions to non-lethal doses of avermectins, and to our lack of consideration of long-term consequences for cow-pat insects and the wider implications for ecology.

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Section: Discussionmentioning

confidence: 99%

Avermectins: a review of their impact on insects of cattle dung

Strong

1992

Bull. Entomol. Res.

117

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“…M. nattereri also gleans prey from surfaces (Swift and Racey 2002;Shiel et al 1991;Vaughan 1997) while they are inactive (Gregor and Bauerova 1987). Insects that fly are also known to be quite active at temperatures lower than that necessary for flight (Taylor 1963).…”

Section: Winter Foragingmentioning

confidence: 97%

Warming up for dinner: torpor and arousal in hibernating Natterer’s bats (Myotis nattereri) studied by radio telemetry

Hope

Jones

2011

J Comp Physiol B

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The frequency and function of arousals during hibernation in free-living mammals are little known. We used temperature-sensitive radio transmitters to measure patterns of torpor, arousal and activity in wild Natterer's bats Myotis nattereri during hibernation. Duration of torpor bouts ranged from 0.06 to 20.4 days with individual means ranging from 0.9 to 8.9 days. Arousals from torpor occurred most commonly coincident with the time (relative to sunset) typical for bats emerging from summer roosts to forage. Bats with lower body condition indices had a shorter average duration of their torpor bouts. We found a non-linear relationship between duration of torpor bout and ambient temperature: the longest average torpor bouts were at temperatures between 2 and 4°C with shorter bouts at lower and higher ambient temperatures. One individual was radio-tracked for ten nights, remained active for an average of 297 min each night and was active for longer on warmer nights. Our results suggest that vespertilionid bats use relatively short torpor bouts during hibernation in a location with a maritime climate. We hypothesise that Natterer's bats time arousals to maximise opportunities for potential foraging during winter although winter feeding is not the sole determinant of arousal as bats still arouse at times when foraging is unlikely.

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“…However, the consumed proportion differs in every study. This is most probably caused by a local and seasonal shift in prey availability (Shiel et al 1991). In general, the three study species had a similar diet and prey diversity.…”

Section: Dimension 4-dietmentioning

confidence: 98%

Importance of multi‐dimensional analyses of resource partitioning in highly mobile species assemblages

2015

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Resource partitioning is an essential mechanism enabling species coexistence. The resources that are used by an animal are linked to its morphology and ecology. Therefore, similar species should use similar resources. The ecological niche of an individual summarizes all used resources and is therefore composed of several dimensions. Many methods are established to study different dimensions of an animal's niche. The aim of this study was to demonstrate that a combination of suitable methods is needed to study spatial and dietary resource partitioning of sympatric species in detail. We hypothesized that, while each individual method might identify differences between species, the combined results of several methods will lead to a more complete picture of spatial and dietary resource partitioning. As model organisms we chose the sympatric insectivorous bat species Myotis bechsteinii, M. nattereri, and P. auritus. We examined horizontal habitat use by telemetry, vertical habitat use by measuring d 13 C, trophic position by measuring d 15 N in wing membrane, and diet composition by molecular fecal analysis. Our results show that each method is able to provide information about spatial/dietary resource partitioning. However, considering further dimensions by combining several methods allows a more comprehensive assessment of dietary and spatial resource partitioning in bats.

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Analysis of the diet of Natterer's bat Myotis nattereri and the common long‐eared bat Plecotus auritus in the West of Ireland

Cited by 77 publications

References 7 publications

Avermectins: a review of their impact on insects of cattle dung

Avermectins: a review of their impact on insects of cattle dung

Warming up for dinner: torpor and arousal in hibernating Natterer’s bats (Myotis nattereri) studied by radio telemetry

Importance of multi‐dimensional analyses of resource partitioning in highly mobile species assemblages

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