Timing of Foraging Flights of Three Species of Bats in Relation to Insect Activity and Predation Risk

Rydell, Jens; Entwistle, Abigail; Racey, Paul A.

doi:10.2307/3546196

Cited by 277 publications

(249 citation statements)

References 50 publications

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“…Tadarida teniotis is a large and fast-flying species and therefore less prone to predation than most bats, which should allow it to emerge early (Jones and Rydell, 1994;Rydell et al, 1996). Consequently, the fact that it left the roost late suggests that its emergence time is determined by the timing of prey availability.…”

Section: Patterns Of Activitymentioning

confidence: 99%

“…Time of emergence in bats is likely to be partly determined by a trade-off between predation risk, which goes down with In some direct flights to and from the roosts this value is likely to approximate flying speed darkness, and prey availability, which tends to be higher at dusk (Erkert, 1982;Rydell et al, 1996). Tadarida teniotis is a large and fast-flying species and therefore less prone to predation than most bats, which should allow it to emerge early (Jones and Rydell, 1994;Rydell et al, 1996).…”

Section: Patterns Of Activitymentioning

confidence: 99%

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Foraging Behaviour and Habitat use by the European Free-Tailed BatTadarida teniotis

Marques

Rainho

Carapuço³

et al. 2004

Acta Chiropterologica

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Section: Patterns Of Activitymentioning

confidence: 99%

Section: Patterns Of Activitymentioning

confidence: 99%

Foraging Behaviour and Habitat use by the European Free-Tailed BatTadarida teniotis

Marques

Rainho

Carapuço³

et al. 2004

Acta Chiropterologica

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“…There were also peaks in activity in the second hour after sunset and in the hour before sunrise. These peaks could reflect increased traffic rates close to the communal roost area, higher foraging rates when bats first emerge in the evening or before they return to roost, or higher foraging rates coinciding with peaks in activity of flying invertebrates (Barclay 1991;Rydell et al 1996). Rydell et al (1996) predicted that bat species with large ears and soft calls similar to those of lesser short-tailed bats, would exploit invertebrates that emerged later in the night (e.g., moths), so they would not be tied to dusk and dawn peaks of activity in Diptera, which are the focus of foraging activity in many Vespertilionid bats such as long-tailed bats (O'Donnell 2000b).…”

Section: Habitat Use By Lesser Short-tailed Batsmentioning

confidence: 99%

Habitat use and nocturnal activity of lesser short‐tailed bats(Mystacina tuberculata)in comparison with long‐tailed bats(Chalinolobus tuberculatus)in temperate rainforest

O’Donnell¹,

Christie²,

Simpson³

2006

New Zealand Journal of Zoology

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Habitat use and nocturnal activity patterns of the threatened lesser short-tailed bat (Mystacina tuberculata) were sampled during late spring and early summer using automatic bat detector units in temperate beech (Nothofagus) rainforest in Fiordland, New Zealand. Detector units recorded the number of bats passing per hour as an index of activity. Habitat use patterns were compared with longtailed bats (Chalinolobus tuberculatus) sampled concurrently. Activity levels in lesser short-tailed bats varied significantly among five habitat types and amongst hours of the night. Of the total activity recorded, most passes (82.6% of n = 657 bat passes) were in red beech forest >200 m from the forest edge; 13.7% were in silver beech within 100 m of forest edges, 2.6% were along roads through forest, 0.9% were on the forest-grassland edge, and 0.2% were in the open grassland. Lesser short-tailed bats were active throughout the night but especially at dawn and dusk. There was no correlation between levels of activity by lesser short-tailed bats and overnight minimum or dusk temperatures. Patterns of habitat use and activity in long-tailed bats were significantly different from those of lesser short-tailed bats. Z06009; Online publication date 19 April 2006 Received 20 December 2005; accepted 3 April 2006Of the total activity recorded, most (56.0% of n = 2929 bat passes) was along forest-grassland edges; 15.7% of passes were in open grassland, 13.1% were along roads through forest, 11.0% were in silver beech forest within 100 m of forest edges, and 4.2% within red beech forest. The implications of these findings for conservation and for improving survey techniques are discussed. For example, lack of use of open and edge habitats by lesser short-tailed bats suggests they would not adapt to highly fragmented and cleared forest habitats. The two species of New Zealand bat used available habitats differently while inhabiting the same sites. Therefore, a range of habitats, including forest interior, forest edges and grasslands, are required to sustain both species within reserves and management areas. Surveys for lesser short-tailed bats should focus on mature forest stands >200 m into the forest to maximise the chance of encountering this species, whereas surveys for long-tailed bats would best focus on forest edges.

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“…In northern Europe, both summer and winter temperatures drop with latitude, the duration of summer shortens, and the length of summer nights decreases and is finally void. These factors should strongly affect energy budgets and thus survival and ability to successfully reproduce in sedentary bats (e.g., Speakman 1991, Hamilton and Barclay 1994, Jones and Rydell 1994, Rydell et al 1996, Humphries et al 2002, Lourenço and Palmeirim 2004, Frafjord 2007, 2012a,b, Michaelsen et al 2011. For a given latitude, temperature varies with several factors, the most obvious being altitude (Schönwiese andRapp 1997, Moen 1999).…”

Section: Introductionmentioning

confidence: 99%

Summer temperature and precipitation govern bat diversity at northern latitudes in Norway

Michaelsen

2016

Mammalia

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This study investigated bat diversity in a temperature and precipitation gradient in fiord and valley landscapes of western Norway about 62° N. Equipment for automatic recording of bat calls was distributed in areas ranging from lowlands to alpine habitats with a mean July temperature range of 8-14°C. A general description of species distribution was given and diversity was analysed using both a generalised linear model (GLM) and a mixed-effects model (GLMM). With regard to the sampling design, the data were analysed on a binary scale, where presence or absence of any species other than the northern bat Eptesicus nilssonii is included. Models including temperature and precipitation explain 79% (GLM) to 91% (GLMM) of the overall variation in bat diversity. In subalpine and alpine areas with temperature below 10°C, only the northern bat was found. This species also forms maternity roosts where mean July temperatures are as low as 11°C and 10°C, below July temperatures found in the warmest areas beyond the Arctic Circle.

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Timing of Foraging Flights of Three Species of Bats in Relation to Insect Activity and Predation Risk

Cited by 277 publications

References 50 publications

Foraging Behaviour and Habitat use by the European Free-Tailed BatTadarida teniotis

Foraging Behaviour and Habitat use by the European Free-Tailed BatTadarida teniotis

Habitat use and nocturnal activity of lesser short‐tailed bats(Mystacina tuberculata)in comparison with long‐tailed bats(Chalinolobus tuberculatus)in temperate rainforest

Summer temperature and precipitation govern bat diversity at northern latitudes in Norway

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