Brown treesnake (Boiga irregularis) fact sheet for Pacific Island residents and travelers

Fact Sheet ◽  
2005 ◽  
Author(s):  
Thomas H. Fritts ◽  
D.L. Tanner ◽  
James Stanford ◽  
Teri Kman
Keyword(s):  
Pacific Island ◽  
Boiga Irregularis ◽  
Fact Sheet ◽  
Brown Treesnake

scholarly journals Experimental landscape reduction of wild rodents increases movements in the invasive brown treesnake (Boiga irregularis)

2017 ◽  
Vol 8 (4) ◽  
pp. 455-467 ◽  
Author(s):  
Michelle Christy ◽  
Julie Savidge ◽  
Amy Yackel Adams ◽  
James Gragg ◽  
Gordon Rodda
Keyword(s):  
Boiga Irregularis ◽  
Wild Rodents ◽  
Brown Treesnake

Diurnal refuge-site selection by Brown Treesnakes (Boiga irregularis) on Guam

2008 ◽  
Vol 29 (2) ◽  
pp. 284-287 ◽  
Author(s):  
Brad Coupe ◽  
Nancy Anderson ◽  
Thomas Hetherington ◽  
Gad Perry ◽  
Joseph Williams
Keyword(s):  
Site Selection ◽  
Thermal Characteristics ◽  
Boiga Irregularis ◽  
Brown Treesnake ◽  
Data Loggers ◽  
Radio Transmitters ◽  
Natural Range ◽  
Brown Tree Snakes ◽  
Free Ranging ◽  
Arboreal Snakes

Abstract Diurnal refuge-site selection was studied in eleven free-ranging brown tree snakes (Boiga irregularis) in tropical forest on the island of Guam. These nocturnal and mostly arboreal snakes were tracked using implanted radio-transmitters. A vegetation survey of the study site was performed to determine if brown treesnakes non-randomly select certain plants for refuge-sites, and thermal profiles of representative refuge sites were obtained with Hobo data loggers. Brown treesnakes preferentially used Pandanus crowns for refuge-sites. Although Pandanus represents a small proportion (3.6%) of the forest, most snakes used Pandanus most of the time for refuge. The thermal characteristics of Pandanus were comparable to those of other refuge-sites. We speculate that features of Pandanus that provide basking opportunities and moist microhabitats may be important for brown treesnakes. As Pandanus is widely distributed throughout the natural range of the brown treesnake, this genus may represent an important refuge-site for this species.

A multiyear comparison of the male reproductive biology of the brown treesnake (Boiga irregularis) from Guam and the native range

2010 ◽  
Vol 58 (1) ◽  
pp. 24 ◽  
Author(s):  
Robert D. Aldridge ◽  
Dustin S. Siegel ◽  
Angelo P. Bufalino ◽  
Samantha S. Wisniewski ◽  
Benjamin C. Jellen
Keyword(s):  
Plasma Levels ◽  
Stress Hormones ◽  
Male Reproduction ◽  
Size At Maturity ◽  
Native Range ◽  
Boiga Irregularis ◽  
Elevated Plasma ◽  
Brown Treesnake ◽  
Limited Food ◽  
Reproductive Anatomy

Previous studies have suggested that reproduction in the brown treesnake (Boiga irregularis) is reduced on Guam because of elevated stress hormones caused by limited food availability. This study examined the reproductive anatomy of male brown treesnakes on Guam over a 15-year period (1985–99) to determine whether the size at maturity and development of the testis and sexual segment of the kidney varied between years and to compare these data to those for snakes collected from the native range. On Guam, the average snout–vent length and body mass of B. irregularis has decreased from its high in 1985 and remained stable from 1989 to 1999. The snout–vent length at maturity was similar between years. Mean diameters of the seminiferous tubule and the sexual segment of the kidney were not significantly different between years. However, the number of sexual segment tubules hypertrophied per snake varied greatly. Snakes from the native range matured at smaller snout–vent lengths and had significantly more hypertrophied sexual segment tubules per kidney than populations on Guam. These data suggest that elevated plasma levels of corticosterone, potentially due to an increase in male–male interactions as a result the explosive population growth experienced on Guam, may be negatively influencing male reproduction.

Venom of the Brown Treesnake, Boiga irregularis: Ontogenetic shifts and taxa-specific toxicity

Toxicon ◽  
2006 ◽  
Vol 47 (5) ◽  
pp. 537-548 ◽  
Author(s):  
Stephen P. Mackessy ◽  
Nicole M. Sixberry ◽  
William H. Heyborne ◽  
Thomas Fritts
Keyword(s):  
Boiga Irregularis ◽  
Ontogenetic Shifts ◽  
Brown Treesnake
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