Guam

Legacy ID: 
12
State Code: 
GU
Country Code: 
GUM
Area: 
0.00
Latitude: 
0.00
Longitude: 
0.00

Investigating the Taxonomic Status of Sheath-tailed Bat

Code: 
RB00CNJ
Bat emergence. Photo by Paul Cryan, USGS.
Bat emergence. Photo by Paul Cryan, USGS.
Abstract: 

The Pacific Sheath tailed bat (Emballonura semicaudata) occurs in the southwestern Pacific and populations on many islands have declined or disappeared. One subspecies (E. semicaudata rotensis) occurs in the Northern Mariana Islands, where it has been extirpated from all but 1 island (Aguiguan). We assessed genetic similarity between the last population of E. s. rotensis and 2 other subspecies, and examined genetic diversity on Aguiguan. We sampled 12 E. s. rotensis, sequenced them at 3 mitochondrial loci, and compared them with published sequences from 2 other subspecies. All 12 E. s. rotensis had identical sequences in each of the 3 regions and was consistently more closely related to E. s. palauensis than E. s. semicaudata.  

Developing and Testing Methods for Extracting Environmental DNA from Soil Samples, with Applications to Detection of Brown Treesnakes

Code: 
RB00CNJ.31
A Brown treesnake, Boiga irregularis. USGS photo.
A Brown treesnake, Boiga irregularis. USGS photo.
Abstract: 

This project uses eDNA methods to determine whether the presence of brown treesnakes can be detected from soil samples. Thus far, eDNA methods have focused on aquatic habitats detecting DNA in water samples. The ability to amplify DNA from soil samples would allow greater geographic utility of these methods, and would be logistically preferable because water samples require extensive filtering, cold storage in the field, and high shipping costs for large volumes of water. Further, eDNA from soil could be a useful tool for early detection and rapid response activities for species such as brown treesnakes that rarely use aquatic habitats and which threaten to colonize previously snake-free islands.

Publication Title: 

Movements and activity of juvenile Brown Treesnakes (Boiga irregularis)

Authors: 
Lardner, B., J.A. Savidge, R.N. Reed, and G.H. Rodda
Publication Date: 
2014
Parent Publication Title: 
Copeia
Publication Type: 
Archive number: 
2014/0068 FORT
States: 

Pub Abstract: 
Publication Title: 

Microgeographic and seasonal variation in population characteristics of Brown Treesnakes from island-wide visual surveys on Guam

Authors: 
Siers, S.R., J.A. Savidge, and R.N. Reed
Parent Publication Title: 
Fish and Wildlife Service Brown Treesnake Technical Working Group Research Meeting, November 18-20, 2014, Guam
Publication Type: 
Archive number: 
States: 

Pub Abstract: 
Publication Title: 

Road-crossing avoidance and the influence of road, snake, and environmental characteristics on crossing rates by Brown Treesnakes on Guam

Authors: 
Siers, S.R., R.N. Reed, and J.A. Savidge
Parent Publication Title: 
Fish and Wildlife Service Brown Treesnake Technical Working Group Research Meeting, November 18-20, 2014, Guam
Publication Type: 
Archive number: 
States: 

Pub Abstract: 
Publication Title: 

Growth rate variation in juvenile BTS, and why we should care about it

Authors: 
Lardner, B., J.A. Savidge, R.N. Reed, A.A. Yackel Adams
Publication Date: 
2013
Updated Date (text): 
2014-01-07
Parent Publication Title: 
Brown Tree Snake Technical Meeting, Yigo, Guam, December 5, 2013
Publication Type: 
Archive number: 
2013/0077 FORT
States: 

Pub Abstract: 
Publication Title: 

USGS Brown Treesnake research overview and directions

Authors: 
R.N. Reed, A.A. Yackel Adams, J.A. Savidge, B. Lardner, S. Siers, L.R. Bonewell, and M.J. Mazurek
Publication Date: 
2013
Updated Date (text): 
2014-01-07
Parent Publication Title: 
Brown Tree Snake Technical Meeting, Yigo, Guam, December 5, 2013
Publication Type: 
Archive number: 
2013/0078 FORT
States: 

Pub Abstract: 
Publication Title: 

Population recovery of BTS after a simulated application of toxicants: A project update

Authors: 
Yackel Adams, A.A., R.N. Reed, B. Lardner, J.A. Savidge, G.H. Rodda, and S.R. Siers
Publication Date: 
2013
Updated Date (text): 
2014-01-07
Parent Publication Title: 
Brown Tree Snake Technical Meeting, Yigo, Guam, December 5, 2013
Publication Type: 
Archive number: 
2013/0079 FORT
States: 

Pub Abstract: 
Publication Title: 

Assessing localized Brown Treesnake suppression on the Guam National Wildlife Refuge via trapping inside the wildlife barrier

Authors: 
Viernes, M.C., J.M. Calaor, M. Sanders, J. Cruce, M.J. Mazurek, A.A. Yackel Adams, J. Schwagerl, R.N. Reed, L.R. Bonewell
Publication Date: 
2013
Updated Date (text): 
2013-12-30
Parent Publication Title: 
Brown Tree Snake Technical Meeting, Yigo, Guam, December 5, 2013
Publication Type: 
Archive number: 
2013/0073 FORT
States: 

Pub Abstract: 
Publication Title: 

Factors affecting defensive strike behavior in Brown Treesnakes provoked by humans

Authors: 
Spencer, M.M. R.N. Reed, B. Lardner, M.J. Mazurek, L.R. Bonewell
Publication Date: 
2013
Updated Date (text): 
2013-12-30
Parent Publication Title: 
Brown Tree Snake Technical Meeting, Yigo, Guam, December 5, 2013
Publication Type: 
Archive number: 
2013/0072 FORT
States: 

Pub Abstract: 

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