The Experts below are selected from a list of 315 Experts worldwide ranked by ideXlab platform

Chris Walzer - One of the best experts on this subject based on the ideXlab platform.

  • lek associated movement of a putative ebolavirus reservoir the hammer headed fruit bat hypsignathus monstrosus in northern republic of congo
    PLOS ONE, 2019
    Co-Authors: Sarah H Olson, Gerard Bounga, Alain Ondzie, Trent Bushmaker, Stephanie N Seifert, Eeva Kuisma, Dylan W Taylor, Vincent J Munster, Chris Walzer
    Abstract:

    The biology and ecology of Africa’s largest fruit bat remains largely understudied and enigmatic despite at least two highly unusual attributes. The acoustic lek mating behavior of the hammer-headed bat (Hypsignathus monstrosus) in the Congo basin was first described in the 1970s. More recently molecular testing implicated this species and other African bats as potential reservoir hosts for Ebola virus and it was one of only two fruit bat species epidemiologically linked to the 2008 Luebo, Democratic Republic of Congo, Ebola outbreak. Here we share findings from the first pilot study of hammer-headed bat movement using GPS Tracking and accelerometry units and a small preceding Radio-Tracking trial at an apparent lekking site. The Radio-Tracking revealed adult males had high rates of nightly visitation to the site compared to females (only one visit) and that two of six females day-roosted ~100 m west of Libonga, the nearest village that is ~1.6 km southwest. Four months later, in mid-April 2018, five individual bats, comprised of four males and one female, were tracked from two to 306 days, collecting from 67 to 1022 GPS locations. As measured by mean distance to the site and proportion of nightly GPS locations within 1 km of the site (percent visitation), the males were much more closely associated with the site (mean distance 1.4 km; 51% visitation), than the female (mean 5.5 km; 2.2% visitation). Despite the small sample size, our Tracking evidence supports our original characterization of the site as a lek, and the lek itself is much more central to male than female movement. Moreover, our pilot demonstrates the technical feasibility of executing future studies on hammer-headed bats that will help fill problematic knowledge gaps about zoonotic spillover risks and the conservation needs of fruit bats across the continent.

  • lek associated movement of a putative ebolavirus reservoir the hammer headed fruit bat hypsignathus monstrosus in northern republic of congo
    bioRxiv, 2019
    Co-Authors: Sarah H Olson, Gerard Bounga, Alain Ondzie, Trent Bushmaker, Stephanie N Seifert, Eeva Kuisma, Dylan W Taylor, Vincent J Munster, Chris Walzer
    Abstract:

    Abstract The biology and ecology of Africa’s largest fruit bat remains largely understudied and enigmatic despite at least two highly unusual attributes. The acoustic lek mating behavior of the hammer-headed bat (Hypsignathus monstrosus) in the Congo basin was first described in the 1970s. Then in the 2000s, molecular testing implicated this species and other fruit bats as potential reservoir hosts for Ebola virus and it was one of only two fruit bat species epidemiologically linked to the 2008 Luebo, Democratic Republic of Congo, Ebola outbreak. Here we share findings from the first pilot study of hammer-headed bat movement using GPS Tracking and accelerometry units and a small preceding Radio-Tracking trial at an apparent lekking site. The Radio-Tracking revealed adult males had high rates of nightly visitation to the site compared to females (only one visit) and that two of six females day-roosted ∼100 m west of Libonga, the nearest village that is ∼1.6 km southwest. Four months later, in mid-April 2018, five individual bats, comprised of four males and one female, were tracked from two to 306 days, collecting from 67 to 1022 GPS locations. As measured by mean distance to the site and proportion of nightly GPS locations within 1 km of the site (percent visitation), the males were much more closely associated with the site (mean distance 1.4 km; 51% visitation), than the female (mean 5.5 km; 2.2% visitation). Despite the small sample size, our Tracking evidence supports our original characterization of the site as a lek, and the lek itself is much more central to male than female movement. Moreover, our pilot demonstrates the technical feasibility of executing future studies on hammer-headed bats that will help fill problematic knowledge gaps about zoonotic spillover risks and the conservation needs of fruit bats across the continent.

B J Trowbridge - One of the best experts on this subject based on the ideXlab platform.

  • the use of Radio Tracking in studying the foraging behaviour of the indian flying fox pteropus giganteus
    Journal of Zoology, 2009
    Co-Authors: R. Walton, B J Trowbridge
    Abstract:

    Although much is known about the behaviour of the Indian Flying fox (Pteropus giganteus Brunnich) whilst at the roost (e.g. Neuweiler, 1969), very little is known of its foraging behaviour. The purpose of this paper is to describe the techniques and results of a preliminary Radio-Tracking study of P. giganteus. In view of the fact that some species of Pteropus are commercial pests (Ratcliffe, 1932) and others are declining rapidly in numbers so as to cause alarm to conservation bodies (Nicoll & Racey, 1981), it is likely that this genus will receive considerable attention in the future. P. giganteus is the largest species of frugivorous bat in Ceylon and is most widely distributed throughout the wet zone (Eisenberg & McKay, 1970).

  • the use of Radio Tracking in studying the foraging behaviour of the indian flying fox pteropus giganteus
    Journal of Zoology, 2009
    Co-Authors: R. Walton, B J Trowbridge
    Abstract:

    Although much is known about the behaviour of the Indian Flying fox (Pteropus giganteus Brunnich) whilst at the roost (e.g. Neuweiler, 1969), very little is known of its foraging behaviour. The purpose of this paper is to describe the techniques and results of a preliminary Radio-Tracking study of P. giganteus. In view of the fact that some species of Pteropus are commercial pests (Ratcliffe, 1932) and others are declining rapidly in numbers so as to cause alarm to conservation bodies (Nicoll & Racey, 1981), it is likely that this genus will receive considerable attention in the future. P. giganteus is the largest species of frugivorous bat in Ceylon and is most widely distributed throughout the wet zone (Eisenberg & McKay, 1970).

R. Walton - One of the best experts on this subject based on the ideXlab platform.

  • the use of Radio Tracking in studying the foraging behaviour of the indian flying fox pteropus giganteus
    Journal of Zoology, 2009
    Co-Authors: R. Walton, B J Trowbridge
    Abstract:

    Although much is known about the behaviour of the Indian Flying fox (Pteropus giganteus Brunnich) whilst at the roost (e.g. Neuweiler, 1969), very little is known of its foraging behaviour. The purpose of this paper is to describe the techniques and results of a preliminary Radio-Tracking study of P. giganteus. In view of the fact that some species of Pteropus are commercial pests (Ratcliffe, 1932) and others are declining rapidly in numbers so as to cause alarm to conservation bodies (Nicoll & Racey, 1981), it is likely that this genus will receive considerable attention in the future. P. giganteus is the largest species of frugivorous bat in Ceylon and is most widely distributed throughout the wet zone (Eisenberg & McKay, 1970).

  • the use of Radio Tracking in studying the foraging behaviour of the indian flying fox pteropus giganteus
    Journal of Zoology, 2009
    Co-Authors: R. Walton, B J Trowbridge
    Abstract:

    Although much is known about the behaviour of the Indian Flying fox (Pteropus giganteus Brunnich) whilst at the roost (e.g. Neuweiler, 1969), very little is known of its foraging behaviour. The purpose of this paper is to describe the techniques and results of a preliminary Radio-Tracking study of P. giganteus. In view of the fact that some species of Pteropus are commercial pests (Ratcliffe, 1932) and others are declining rapidly in numbers so as to cause alarm to conservation bodies (Nicoll & Racey, 1981), it is likely that this genus will receive considerable attention in the future. P. giganteus is the largest species of frugivorous bat in Ceylon and is most widely distributed throughout the wet zone (Eisenberg & McKay, 1970).

Beat Naefdaenzer - One of the best experts on this subject based on the ideXlab platform.

  • Radio Tracking reveals that lesser horseshoe bats rhinolophus hipposideros forage in woodland
    Journal of Zoology, 2002
    Co-Authors: Fabio Bontadina, Henry Schofield, Beat Naefdaenzer
    Abstract:

    Over the past 50 years European populations of the lesser horseshoe bat Rhinolophus hipposideros have severely declined, probably because of the loss of foraging habitat. To date, studies of the foraging behaviour of this species have been limited as its low mass (4‐8 g) precluded the use of Radio-telemetry because commercially available Radio-transmitters exceeded 10% of its body mass. In this study, Radiotransmitters weighing < 0.35 g were built. These increased the body mass of the animals from 4.5% to 8.1%, with no demonstrable adverse effect on their flight behaviour. The habitat selection of eight female lesser horseshoe bats was studied in Monmouthshire, U.K. The bats had foraging ranges between 12 and 53 ha (100% kernel). Although one bat foraged 4.2 km from the roost, for 50% of the time tracked bats were recorded within 600 m of the nursery roost. The estimated density within 200 m of the roost was 5.8 foraging bats/ha. This decreased to 0.01 bats/ha at 1200 m. Compositional analysis revealed that this species used woodlands, predominately broadleaf, more than any other habitat. In addition, the bats foraged in areas of high habitat diversity. Conservation management of this species should concentrate on such areas within 2.5 km of the nursery roost.

Sarah H Olson - One of the best experts on this subject based on the ideXlab platform.

  • lek associated movement of a putative ebolavirus reservoir the hammer headed fruit bat hypsignathus monstrosus in northern republic of congo
    PLOS ONE, 2019
    Co-Authors: Sarah H Olson, Gerard Bounga, Alain Ondzie, Trent Bushmaker, Stephanie N Seifert, Eeva Kuisma, Dylan W Taylor, Vincent J Munster, Chris Walzer
    Abstract:

    The biology and ecology of Africa’s largest fruit bat remains largely understudied and enigmatic despite at least two highly unusual attributes. The acoustic lek mating behavior of the hammer-headed bat (Hypsignathus monstrosus) in the Congo basin was first described in the 1970s. More recently molecular testing implicated this species and other African bats as potential reservoir hosts for Ebola virus and it was one of only two fruit bat species epidemiologically linked to the 2008 Luebo, Democratic Republic of Congo, Ebola outbreak. Here we share findings from the first pilot study of hammer-headed bat movement using GPS Tracking and accelerometry units and a small preceding Radio-Tracking trial at an apparent lekking site. The Radio-Tracking revealed adult males had high rates of nightly visitation to the site compared to females (only one visit) and that two of six females day-roosted ~100 m west of Libonga, the nearest village that is ~1.6 km southwest. Four months later, in mid-April 2018, five individual bats, comprised of four males and one female, were tracked from two to 306 days, collecting from 67 to 1022 GPS locations. As measured by mean distance to the site and proportion of nightly GPS locations within 1 km of the site (percent visitation), the males were much more closely associated with the site (mean distance 1.4 km; 51% visitation), than the female (mean 5.5 km; 2.2% visitation). Despite the small sample size, our Tracking evidence supports our original characterization of the site as a lek, and the lek itself is much more central to male than female movement. Moreover, our pilot demonstrates the technical feasibility of executing future studies on hammer-headed bats that will help fill problematic knowledge gaps about zoonotic spillover risks and the conservation needs of fruit bats across the continent.

  • lek associated movement of a putative ebolavirus reservoir the hammer headed fruit bat hypsignathus monstrosus in northern republic of congo
    bioRxiv, 2019
    Co-Authors: Sarah H Olson, Gerard Bounga, Alain Ondzie, Trent Bushmaker, Stephanie N Seifert, Eeva Kuisma, Dylan W Taylor, Vincent J Munster, Chris Walzer
    Abstract:

    Abstract The biology and ecology of Africa’s largest fruit bat remains largely understudied and enigmatic despite at least two highly unusual attributes. The acoustic lek mating behavior of the hammer-headed bat (Hypsignathus monstrosus) in the Congo basin was first described in the 1970s. Then in the 2000s, molecular testing implicated this species and other fruit bats as potential reservoir hosts for Ebola virus and it was one of only two fruit bat species epidemiologically linked to the 2008 Luebo, Democratic Republic of Congo, Ebola outbreak. Here we share findings from the first pilot study of hammer-headed bat movement using GPS Tracking and accelerometry units and a small preceding Radio-Tracking trial at an apparent lekking site. The Radio-Tracking revealed adult males had high rates of nightly visitation to the site compared to females (only one visit) and that two of six females day-roosted ∼100 m west of Libonga, the nearest village that is ∼1.6 km southwest. Four months later, in mid-April 2018, five individual bats, comprised of four males and one female, were tracked from two to 306 days, collecting from 67 to 1022 GPS locations. As measured by mean distance to the site and proportion of nightly GPS locations within 1 km of the site (percent visitation), the males were much more closely associated with the site (mean distance 1.4 km; 51% visitation), than the female (mean 5.5 km; 2.2% visitation). Despite the small sample size, our Tracking evidence supports our original characterization of the site as a lek, and the lek itself is much more central to male than female movement. Moreover, our pilot demonstrates the technical feasibility of executing future studies on hammer-headed bats that will help fill problematic knowledge gaps about zoonotic spillover risks and the conservation needs of fruit bats across the continent.