scholarly journals Overwintering observations of Northern Leopard Frog (Lithobates pipiens) activity under ice

2014 ◽  
Vol 21 (2) ◽  
pp. 60-65
Author(s):  
Natasha Kreitals ◽  
John-Mark Davies ◽  
Dave W. Phillips ◽  
Iain D. Phillips
Keyword(s):  
Leopard Frog ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog

scholarly journals Tissue-specific transcriptome characterization for developing tadpoles of the northern leopard frog (Lithobates pipiens)

Genomics ◽  
2016 ◽  
Vol 108 (5-6) ◽  
pp. 232-240 ◽  
Author(s):  
Jeffrey R. Row ◽  
Michael E. Donaldson ◽  
Jessica N. Longhi ◽  
Barry J. Saville ◽  
Dennis L. Murray
Keyword(s):  
Leopard Frog ◽  
Tissue Specific ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog

scholarly journals Asynchronous breeding and variable embryonic development period in the threatened Northern Leopard Frog (Lithobates pipiens) in the Cypress Hills, Alberta, Canada: conservation and management implications

2014 ◽  
Vol 128 (1) ◽  
pp. 50 ◽  
Author(s):  
Lea A. Randall ◽  
Lynne D. Chalmers ◽  
Axel Moehrenschlager ◽  
Anthony P. Russell
Keyword(s):  
Embryo Development ◽  
Information Criterion ◽  
Geographic Area ◽  
Development Rate ◽  
Breeding Habitat ◽  
Leopard Frog ◽  
Egg Masses ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog ◽  
Julian Date

Understanding breeding phenology is critical for establishing monitoring strategies, comprehending population dynamics, and developing conservation actions for at-risk species, such as the Northern Leopard Frog (Lithobates pipiens). The timing of spawning and hatching in the Northern Leopard Frog may be highly variable depending on regional environmental conditions, which can make establishing the timing of surveys difficult. In spring 2006, eggs were laid over 30 days (24 April to 23 May) and hatching occurred over 2 weeks (14–28 May) at three neighbouring ponds in Cypress Hills, Alberta, Canada. Although spawning occurred over a month, all eggs hatched within a 2-week period, indicating variable embryo development rate. Among 26 egg masses, eggs laid later in the season developed approximately four times faster than those laid earlier, and Akaike information criterion-ranked models suggested that both Julian date and water temperature were important predictors of embryo development rate: later spawning date and warmer water were associated with faster rates. Some egg masses survived colder temperatures than previously reported for this species. Asynchronous breeding and variable development rates reveal the need to conduct multiple surveys over the breeding season, even within a small geographic area, to document reliably the presence of egg masses and identify breeding habitat. Identification of key breeding habitat is necessary to mitigate human-caused disturbances of such regionally imperiled species.

Does exposure to cues of fish predators fed different diets affect morphology and performance of Northern Leopard Frog (Lithobates pipiens) larvae?

2013 ◽  
Vol 91 (4) ◽  
pp. 203-211 ◽  
Author(s):  
Rayan El Balaa ◽  
Gabriel Blouin-Demers
Keyword(s):  
Life History ◽  
Phenotypic Plasticity ◽  
Perceived Risk ◽  
Leopard Frog ◽  
Predatory Fish ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog ◽  
Risk Of Predation ◽  
Fish Predators ◽  
Plastic Changes

Phenotypic plasticity allows animals to change their morphological and life-history traits when exposed to predator cues, which modifies performance and can enhance survival but engender costs. Thus, the extent of plastic changes should vary in relation to the perceived risk of predation. We tested the hypothesis that plastic changes in morphology (and their effect on performance) and life history of developing Northern Leopard Frog (Lithobates pipiens (Schreber, 1782)) larvae vary when exposed to cues of fish predators fed different diets. During development, we exposed tadpoles to control cues, cues from brown bullhead (Ameiurus nebulosus (Lesueur, 1819)) fed trout pellets, or cues from A. nebulosus fed L. pipiens tadpoles. Tadpoles exposed to predatory fish cues had smaller bodies, deeper tail fins, slower growth and development rates, and better turning performance than tadpoles that were not exposed to predatory fish cues, but we found limited evidence that the predator’s diet had an effect on phenotypic plasticity. Predator diet affected tail morphology and activity, but the latter effect was only marginally significant. Lithobates pipiens tadpoles clearly respond to predatory fish cues, but it remains unclear whether their response is modulated by the predator’s diet.

scholarly journals Spotless burnsi pattern in Northern Leopard Frog (Lithobates pipiens) in Maine

2020 ◽  
Vol 133 (3) ◽  
pp. 193-195
Author(s):  
Scott B. Lindemann ◽  
David E. Putnam ◽  
Malcolm L. Hunter, Jr. ◽  
Trevor B. Persons
Keyword(s):  
Leopard Frog ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog

We document the spotless “burnsi” morph in Northern Leopard Frog (Lithobates pipiens) in Maine.

scholarly journals Habitat selection by Common Gartersnakes (Thamnophis sirtalis) is affected by vegetation structure but not by location of Northern Leopard Frog (Lithobates pipiens) prey

2019 ◽  
Vol 132 (3) ◽  
pp. 223-230
Author(s):  
William D. Halliday ◽  
Gabriel Blouin-Demers
Keyword(s):  
Habitat Selection ◽  
Vegetation Structure ◽  
Leopard Frog ◽  
Thamnophis Sirtalis ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog ◽  
Factors Affecting ◽  
Leopard Frogs ◽  
Future Work ◽  
Selection Of

Understanding the factors affecting habitat selection of species is important for effective management and for conservation because habitat selection affects fitness. We tested the competing, but not mutually exclusive, hypotheses that habitat selection of Common Gartersnakes (Thamnophis sirtalis) at a fine spatial scale is driven by vegetation structure or by Northern Leopard Frog (Lithobates pipiens) prey abundance. We conducted surveys for snakes and frogs in six, 1-ha study grids in eastern Ontario in 2014 and 2015. Common Gartersnakes used areas dominated by forbs more than expected based on availability, and used grassy areas less than expected based on availability. Gartersnakes showed no preference for sites with more frogs. Thus, vegetation structure is important in habitat selection of Common Gartersnakes, but Northern Leopard Frog abundance is not. Common Gartersnakes and Northern Leopard Frogs did have a preference for forbs, but gartersnakes do not appear to be using habitat specifically based on frog abundance at a fine scale. Future work should study habitat use by snakes over a longer period to account for high variability in frog abundance and for temporal changes in habitat structure. Future work should also examine the distribution of other prey items in relation to the distribution of snakes.

Effects of two pesticides on northern leopard frog (Lithobates pipiens) stress metrics: Blood cell profiles and corticosterone concentrations

2021 ◽  
Vol 235 ◽  
pp. 105820
Author(s):  
Melody J. Gavel ◽  
Sarah D. Young ◽  
Rebecca L. Dalton ◽  
Catherine Soos ◽  
Landon McPhee ◽  
...  
Keyword(s):  
Blood Cell ◽  
Leopard Frog ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog

scholarly journals Development and Growth of Northern Leopard Frog, Lithobates pipiens, Tadpoles in North American Waterfowl Management Plan Permanent Basins and in Natural Wetlands

2010 ◽  
Vol 124 (2) ◽  
pp. 159 ◽  
Author(s):  
Daniel Pouliot ◽  
Jean-Jacques Frenette
Keyword(s):  
North American ◽  
Management Plan ◽  
Leopard Frog ◽  
Suitable Habitat ◽  
Natural Conditions ◽  
Lithobates Pipiens ◽  
Northern Leopard Frog ◽  
Natural Wetlands ◽  
Declining Species ◽  
St Lawrence River

We monitored the development and growth of a cohort of Northern Leopard Frog (Lithobates pipiens) tadpoles, in one North American Waterfowl Management Plan (NAWMP) permanent basin and in one natural environment, a bay of the St. Lawrence River. We wanted to know if this kind of artificial wetland could be considered as suitable habitat for this declining species and compare the environment that was provided to the tadpoles to those found in natural conditions. We also measured metamorphs' snout-vent length at three different permanent basins and natural bays to verify if the results from the detailed monitoring could be generalized. Our results have showed that the tadpoles were able to complete their development in the permanent basin and that their growth was superior to those from the natural site. The metamorphs from the permanent basins were also, on average, longer than those from the natural sites. The NAWMP permanent basins are suitable for the Northern Leopard Frog and could be a useful tool in the conservation of this species.Nous avons suivi le développement et la croissance d'une cohorte de têtards de Grenouille Léopard du Nord (Lithobates pipiens) dans un bassin permanent du Plan Nord Américain de Gestion de la Sauvagine (PNAGS) et dans un site naturel, une baie du fleuve Saint-Laurent. Nous voulions vérifier si ce type d'aménagement pouvait être considéré comme un habitat potentiel pour cette espèce en déclin et comparer les conditions environnementales disponibles pour les têtards. Nous avons aussi mesuré la longueur museau-cloaque des métamorphes provenant de trois bassins permanents et de trois baies du Saint-Laurent pour vérifier si les résultats obtenus par le suivi détaillé pouvaient être généralisés. Nos résultats ont montré que les têtards pouvaient compléter leur développement dans le bassin permanent et que leur croissance était aussi supérieure que dans le site naturel. Les métamorphes des trois bassins permanents étaient aussi, en moyenne, de taille supérieure à que ceux des sites naturels. Les bassins permanents du PNAGS peuvent être considérés comme des habitats potentiels pour la Grenouille Léopard du Nord. Ils pourraient représenter des outils utiles pour la conservation de cette espèce.

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