scholarly journals Apparent Continuing Expansion in the Range of the Gray Treefrog, Hyla versicolor, in New Brunswick

2009 ◽  
Vol 123 (4) ◽  
pp. 309
Author(s):  
Donald F. McAlpine ◽  
Joseph D. H. Pratt ◽  
John H. Terhune
Keyword(s):  
New Brunswick ◽  
Breeding Season ◽  
Range Expansion ◽  
Human Activities ◽  
Hyla Versicolor ◽  
Current Range ◽  
Historic Records ◽  
Gray Treefrog

Recent observations of the Gray Treefrog, Hyla versicolor, in the Maritimes suggest that this species may be expanding its range and abundance, perhaps partly in response to human activities. However, during the breeding season the species characteristically calls in very small choruses in the region and may be present but not call, or call for very short periods. This has made it difficult to determine distribution and to make an assessment of unconfirmed historic records that suggest presence beyond the current range more than 50 years ago. The inadvertent introduction of frogs may also be playing a role in the apparent recent range expansion of this species.

scholarly journals A MULTIVARIATE ANALYSIS OF GENETIC VARIATION IN THE ADVERTISEMENT CALL OF THE GRAY TREEFROG,HYLA VERSICOLOR

Evolution ◽  
2014 ◽  
Vol 68 (6) ◽  
pp. 1629-1639 ◽  
Author(s):  
Allison M. Welch ◽  
Michael J. Smith ◽  
H. Carl Gerhardt
Keyword(s):  
Multivariate Analysis ◽  
Genetic Variation ◽  
Advertisement Call ◽  
Hyla Versicolor ◽  
Gray Treefrog

scholarly journals Assessing Summer Pond and Lake Inlet Use by Gray Treefrogs (Hyla versicolor/chrysoscelis complex) Using PVC Pipe Traps in Northwest Missouri

2020 ◽  
Vol 48 (2020) ◽  
pp. 17-21
Author(s):  
J. D. McGhee
Keyword(s):  
Sex Ratio ◽  
Hyla Versicolor ◽  
Monitoring Methods ◽  
Contingency Table Analysis ◽  
Detection Rates ◽  
Sampling Locations ◽  
Table Analysis ◽  
Pvc Pipe ◽  
Gray Treefrog

Abstract The widespread decline in amphibian populations highlights the need for establishing rigorous monitoring methods for long-term population studies. In an attempt to launch a long-term monitoring study for a Gray Treefrog complex (Hyla versicolor LeConte /chrysoscelis Cope, hereafter treefrog) population in northwest Missouri, I tested the use of PVC pipe traps in a system of ponds and inlets along a lakeside habitat for three years. For each pond (3) and inlet (2), I established an array of 16 pipes so as to compare differences in use between pipe location, ponds and inlets, and sex ratio between sites. Pipes were checked twice a week during the summer for the presence of treefrogs. Treefrog usage of pipes between ponds and inlets were compared using a contingency table analysis, while an ANOVA was used to assess differences in sex ratios between sites (α = 0.05). A single inlet was used by treefrogs more heavily than the other ponds or inlet (G = 13.61, df = 3, P = 0.0035), however, I found no differences in terms of pipe location within a pond or inlet. Mean sex ratio between water bodies varied but did not significantly differ. There appears to be little effect in terms of pipe placement within our 50 m buffer from the water's edge, but unique habitat effects at sampling locations may significantly affect detection rates or usage.

scholarly journals First Occurrence of the Grey Fox, Urocyon cinereoargenteus, in New Brunswick: a Climate-change Mediated Range Expansion?

2008 ◽  
Vol 122 (2) ◽  
pp. 169
Author(s):  
Donald McAlpine ◽  
James D. Martin ◽  
Cade Libby
Keyword(s):  
Climate Change ◽  
New Brunswick ◽  
Threatened Species ◽  
North American ◽  
Range Expansion ◽  
Range Extension ◽  
Urocyon Cinereoargenteus ◽  
Subadult Male ◽  
Warming Climate ◽  
First Occurrence

The first occurrence in New Brunswick of the Grey Fox (Urocyon cinereoargenteus), a threatened species in Canada, is documented based on a 4.3 kg subadult male trapped in the southwestern corner of the province. This is an approximate range extension of 135 km from the most northerly Maine occurrence and may reflect a larger North American range expansion underway since 1930-40, perhaps in response to warming climate.

The invasive mealybug Maconellicoccus hirsutus: lessons for its current range expansion in South America and invasive pest management in general

2013 ◽  
Vol 86 (3) ◽  
pp. 387-398 ◽  
Author(s):  
Mark P. Culik ◽  
Maurício José Fornazier ◽  
David dos Santos Martins ◽  
José Salazar Zanuncio ◽  
José Aires Ventura ◽  
...  
Keyword(s):  
South America ◽  
Pest Management ◽  
Range Expansion ◽  
Invasive Pest ◽  
Current Range ◽  
Maconellicoccus Hirsutus

Calling site choice and its impact on call degradation and call attractiveness in the gray treefrog, Hyla versicolor

2015 ◽  
Vol 70 (1) ◽  
pp. 1-19 ◽  
Author(s):  
Joshua J. Schwartz ◽  
Raymond Hunce ◽  
Brandon Lentine ◽  
Kristi Powers
Keyword(s):  
Hyla Versicolor ◽  
Gray Treefrog

Mate Selection in the Gray Treefrog, Hyla versicolor

Copeia ◽  
1979 ◽  
Vol 1979 (2) ◽  
pp. 286 ◽  
Author(s):  
Gary M. Fellers
Keyword(s):  
Mate Selection ◽  
Hyla Versicolor ◽  
Gray Treefrog
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