Wyniki wyszukiwania

1

Foods of the northern myotis, Myotis septentrionalis, from Missouri and Indiana, with notes on foraging

100%

Brack,Jr. V., Whitaker,Jr. J. O.

Acta Chiropterologica

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2001

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tom 03

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nr 2

This paper presents information on foods eaten by the northern myotis, Myotis septentrionalis, from four different localities in the states of Missouri and Indiana, USA. Based on fecal and stomach content analyses, we found that M. septentrionalis feeds heavily on Lepidoptera (10.4-94.0% of the volume), and to a lesser extent on Coleoptera (0.4-64.0), Trichoptera (0.0-54.5), and Diptera (0.0-15.3). Non-flying prey items, such as spiders and lepidopterous larvae, made up 12.7% of food in 63 stomachs from Copperhead Cave, Indiana, which is a clear indication of the gleaning behavior of this species. Foraging was concentrated in the understory of non-riparian habitat, which may be a further reflection of a gleaning strategy. No significant differences were found in the overall diet of M. septentrionalis between evening and morning feeding periods, although there were some differences in consumption of particular orders.

2

Acquisition of foraging behavior and insect preferences by naive juvenile red bats (Lasiurus borealis)

100%

Schmidt-French B., Whitaker Jr J. O.

Acta Chiropterologica

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2005

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tom 07

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nr 2

3

Hard pellets from bats of Turkey

100%

Whitaker,Jr. J. O., Karatas A.

Acta Chiropterologica

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2010

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tom 12

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nr 1

4

A reanalysis of apparent survival rates of Indiana myotis (Myotis sodalis)

81%

Boyles J. G., Walters B. L., Whitaker,Jr. J. O., Cope J. B.

Acta Chiropterologica

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2007

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tom 09

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nr 1

The estimation of demographic rates is important for conservation and management of species. However, with the exception of an estimate for adult survival by Humphrey and Cope in 1977, there are no estimates of any demographic rates for the endangered Indiana myotis (Myotis sodalis). Their estimate is based on techniques that have been replaced by newer, more flexible, and less biased techniques. Therefore, we reanalyzed a subset of the data first analyzed by Humphrey and Cope using a Cormack-Jolly-Seber model. Two models [φ(year)p(year) and φ(year)p(sex*year)] are equally parsimonious, so we used model averaging to estimate apparent survival. We used this estimate to calculate the average cumulative survival each year after banding for four un-aged cohorts. Our estimate suggests that apparent survival is considerably higher than estimated by Humphrey and Cope the first year after banding and lower the second year after banding. Subsequent to the first two years after banding, our estimates are similar, but slightly lower than those reported by Humphrey and Cope. These results, while useful, cannot be taken as true survival rates for Indiana myotis because of limitations in the data and we suggest this estimate be used appropriately when making management decisions. We discuss limitations in this type of data and make suggestions for experimental design of future studies to collect data more appropriate for estimation of demographic rates in bats.

5

Winter feeding by bats in Missouri

81%

Dunbar M. B., Whitaker, Jr. J. O., Robbins L. W.

Acta Chiropterologica

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2007

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tom 09

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nr 1

6

Timing of migration by eastern red bats (Lasiurus borealis) through Central Indiana

81%

Walters B. L., Sparks D. W., Whitaker Jr. J. O., Ritzi C. M.

Acta Chiropterologica

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2006

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tom 08

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nr 1

Ograniczanie wyników

6 Acta Chiropterologica

3 Whitaker,Jr. J. O.

2 Walters B. L.

1 Boyles J. G.

1 Brack,Jr. V.

1 Cope J. B.

1 Dunbar M. B.

1 Karatas A.

1 Ritzi C. M.

1 Robbins L. W.

1 Schmidt-French B.

1 Sparks D. W.

1 Whitaker Jr J. O.

1 Whitaker Jr. J. O.

1 Whitaker, Jr. J. O.

1 2010

2 2007

1 2006

1 2005

1 2001

Foods of the northern myotis, Myotis septentrionalis, from Missouri and Indiana, with notes on foraging

Acquisition of foraging behavior and insect preferences by naive juvenile red bats (Lasiurus borealis)

Hard pellets from bats of Turkey

A reanalysis of apparent survival rates of Indiana myotis (Myotis sodalis)

Winter feeding by bats in Missouri

Timing of migration by eastern red bats (Lasiurus borealis) through Central Indiana