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Carissa M Krane - One of the best experts on this subject based on the ideXlab platform.
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epinephrine regulates aquaglyceroporin hc 3 expression and subcellular localization in cultured erythrocytes from the freeze tolerant treefrog Hyla chrysoscelis 1099 5
The FASEB Journal, 2014Co-Authors: Connor Ratycz, Philip Nickell, James Frisbie, David L Goldstein, Carissa M KraneAbstract:Cope’s gray treefrog Hyla chrysoscelis, accumulates and distributes glycerol as a cryoprotectant in anticipation of freezing. Transmembrane glycerol and water flux in H. chysoscelis erythrocytes li...
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aquaglyceroporin hc 3 mediates hypotonicity induced cell volume and shape changes in cultured erythrocytes from cope s gray treefrog Hyla chrysoscelis 1099 4
The FASEB Journal, 2014Co-Authors: Mark Hawk, Philip Nickell, James Frisbie, David L Goldstein, Carissa M KraneAbstract:Freeze tolerant Cope’s gray treefrog, Hyla chrysoscelis, accumulates glycerol during a process of cold-acclimation in anticipation of freezing. Glycerol acts as a cryoprotectant to control osmotic ...
Ward C. Wheeler - One of the best experts on this subject based on the ideXlab platform.
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A molecular perspective on the phylogeny of the Hyla pulchella species group (Anura, Hylidae).
Molecular phylogenetics and evolution, 2004Co-Authors: Julián Faivovich, Paulo Garcia, Fernando Ananias, Laura Lanari, Nestor Guillermo Basso, Ward C. WheelerAbstract:A molecular phylogenetic analysis of the Hyla pulchella species group was performed to test its monophyly, explore the interrelationships of its species, and evaluate the validity of the taxa that were considered subspecies of H. pulchella. Approximately 2.8 kb from the mitochondrial genes 12s, tRNA valine, 16s, and Cytochrome b were sequenced. The analysis included 50 terminals representing 10 of the 14-15 species currently recognized in the H. pulchella group, including samples from several localities for some taxa, several outgroups, as well as two species previously suspected to be related with the group (Hyla guentheri and Hyla bischoffi). The results show that the H. pulchella and Hyla circumdata groups are distantly related, and, therefore, should be recognized as separate groups. As currently defined, the H. pulchella group is paraphyletic with respect to the Hyla polytaenia group; therefore, we recognize the Hyla polytaenia clade in the H. pulchella group. Two subspecies of H. pulchella recognized by some authors are considered full species including Hyla pulchella riojana because it is only distantly related to H. pulchella, and Hyla pulchella cordobae because molecular and non-molecular evidence suggests that it is specifically distinct. With the inclusion of the H. polytaenia clade, H. guentheri, and H. bischoffi, and the recognition of the two former subspecies of H. pulchella as distinct species, the H. pulchella group now comprises 25 described species. All representatives of the H. pulchella group with an Andean distribution are monophyletic and nested within a clade from the Atlantic forest from south-southeastern Brazil/northeastern Argentina, and Cerrado gallery forest from central Brazil.
Julián Faivovich - One of the best experts on this subject based on the ideXlab platform.
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the identity of the poorly known treefrog Hyla varelae carrizo 1992 anura hylidae
Zoologischer Anzeiger, 2019Co-Authors: Paulo D P Pinheiro, Julián Faivovich, Gustavo Rodolfo CarrizoAbstract:Abstract Hyla varelae Carrizo, 1992 is an Argentinean species only known from the holotype. The study of this specimen indicates that it pertains to the Boana pulchella group and it is a junior synonym of Hyla riojana Koslowsky, 1895 (currently Boana riojana). We traced the itinerary of the field trip in which the holotype was collected using the catalog of the collection where it was initially housed (Centro Nacional de Estudios Iologicos—CENAI). These data and the study of other specimens collected during that trip indicate that the type specimen was wrongly associated with the reported type locality of H. varelae (Selvas del Rio de Oro, Chaco, Argentina; far away from the known distribution of B. riojana). The holotype was most probably collected in Horco Molle, Yerba Buena, Tucuman, Argentina.
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the specialized reproductive mode of the treefrog aplastodiscus perviridis anura hylidae
Amphibia-reptilia, 2005Co-Authors: Celio F B Haddad, Julián Faivovich, Paulo C A GarciaAbstract:Males of the South American treefrog Aplastodiscus perviridis construct concealed subterranean nests. Using a complex courtship behavior that involves tactile stimuli and vocalizations, males guide the females to the subterranean nests where eggs are laid. Embryos and facultatively oophagous tadpoles (at least in stage 25) stay in subterranean nests until flooding transports them to ponds or streams. This is a rare reproductive mode previously known for few species in the Hyla albosignata and H. albofrenata complexes. Based on similarities of reproductive mode we suggest a monophyletic origin for Aplastodiscus and these complexes of Hyla.
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A molecular perspective on the phylogeny of the Hyla pulchella species group (Anura, Hylidae).
Molecular phylogenetics and evolution, 2004Co-Authors: Julián Faivovich, Paulo Garcia, Fernando Ananias, Laura Lanari, Nestor Guillermo Basso, Ward C. WheelerAbstract:A molecular phylogenetic analysis of the Hyla pulchella species group was performed to test its monophyly, explore the interrelationships of its species, and evaluate the validity of the taxa that were considered subspecies of H. pulchella. Approximately 2.8 kb from the mitochondrial genes 12s, tRNA valine, 16s, and Cytochrome b were sequenced. The analysis included 50 terminals representing 10 of the 14-15 species currently recognized in the H. pulchella group, including samples from several localities for some taxa, several outgroups, as well as two species previously suspected to be related with the group (Hyla guentheri and Hyla bischoffi). The results show that the H. pulchella and Hyla circumdata groups are distantly related, and, therefore, should be recognized as separate groups. As currently defined, the H. pulchella group is paraphyletic with respect to the Hyla polytaenia group; therefore, we recognize the Hyla polytaenia clade in the H. pulchella group. Two subspecies of H. pulchella recognized by some authors are considered full species including Hyla pulchella riojana because it is only distantly related to H. pulchella, and Hyla pulchella cordobae because molecular and non-molecular evidence suggests that it is specifically distinct. With the inclusion of the H. polytaenia clade, H. guentheri, and H. bischoffi, and the recognition of the two former subspecies of H. pulchella as distinct species, the H. pulchella group now comprises 25 described species. All representatives of the H. pulchella group with an Andean distribution are monophyletic and nested within a clade from the Atlantic forest from south-southeastern Brazil/northeastern Argentina, and Cerrado gallery forest from central Brazil.
Carl H Gerhardt - One of the best experts on this subject based on the ideXlab platform.
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Gray treefrog advertisement call properties
2016Co-Authors: Allison M. Welch, Michael J. Smith, Carl H GerhardtAbstract:Advertisement call properties recorded from two generations of gray treefrogs (Hyla versicolor). Data are described in the accompanying ReadMe file
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advertisement call preferences in diploid tetraploid treefrogs Hyla chrysoscelis and Hyla versicolor implications for mate choice and the evolution of communication systems
Evolution, 2005Co-Authors: Carl H GerhardtAbstract:Signals used for mate choice and receiver preferences are often assumed to coevolve in a lock-step fashion. However, sender-receiver coevolution can also be nonparallel: even if species differences in signals are mainly quantitative, females of some closely related species have qualitatively different preferences and underlying mechanisms. Two-alternative playback experiments using synthetic calls that differed in fine-scale temporal properties identified the receiver criteria in females of the treefrog Hyla chrysoscelis for comparison with female criteria in a cryptic tetraploid species (H. versicolor); detailed preference functions were also generated for both species based on natural patterns of variation in temporal properties. The species were similar in three respects: (1) pulses of constant frequency were as attractive as the frequency-modulated pulses typical of conspecific calls; (2) changes in preferences with temperature paralleled temperature-dependent changes in male calls; and (3) preference functions were unimodal, with weakly defined peaks estimated at values slightly higher than the estimated means in conspecific calls. There were also species differences: (1) preference function slopes were steeper in H. chrysoscelis than in H. versicolor; (2) preferences were more intensity independent in H. chrysoscelis than in H. versicolor; (3) a synergistic effect of differences in pulse rate and shape on preference strength occurred in H. versicolor but not in H. chrysoscelis; and (4) a preference for the pulse shape typical of conspecific calls was expressed at the species-typical pulse duration in H. versicolor but not in H. chrysoscelis. However, females of H. chrysoscelis did express a preference based on pulse shape when tested with longer-than-average pulses, suggesting a hypothesis that could account for some examples of nonparallel coevolution. Namely, preferences can be hidden or revealed depending on the direction of quantitative change in a signal property relative to the threshold for resolving differences in that property. The results of the experiments reported here also predict patterns of mate choice within and between contemporary populations. First, intraspecific mate choice in both species is expected to be strongly influenced by variation in temperature among calling males. Second, simultaneous differences in pulse rate and pulse shape are required for effective species discrimination by females of H. versicolor but not by females of H. chrysoscelis. Third, there is greater potential for sexual selection within populations and for discrimination against calls produced by males in other geographically remote populations in H. chrysoscelis than in H. versicolor.
Mark A. Bee - One of the best experts on this subject based on the ideXlab platform.
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Multivariate selection in Hyla chrysoscelis - phonotaxis data
2018Co-Authors: Jessie C. Tanner, Jessica L. Ward, Ruth G. Shaw, Mark A. BeeAbstract:Multivariate selection in Hyla chrysoscelis - phonotaxis dat
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signal recognition by green treefrogs Hyla cinerea and cope s gray treefrogs Hyla chrysoscelis in naturally fluctuating noise
Journal of Comparative Psychology, 2013Co-Authors: Alejandro Velez, Mark A. BeeAbstract:Animals often communicate acoustically in social aggregations that include several signalers and receivers (Schwartz & Freeberg, 2008). In such environments, the background noise generated by the mixture of unattended signals poses a number of problems for communication, including impaired signal detection, recognition, and discrimination (Brumm & Slabbekoorn, 2005; Klump, 1996). How the auditory systems of nonhuman animals may be adapted to overcome or ameliorate these problems has received little attention (Bee & Micheyl, 2008; Brumm & Slabbekoorn, 2005; Hulse, 2002; Klump, 1996; Miller & Bee, 2012). Importantly, the level of background noise present in natural acoustic scenes is not constant, but instead fluctuates over time (Richards & Wiley, 1980; Nelken, Rotnam, & Yosef, 1999; Velez & Bee, 2010). Among the potential mechanisms animals use to communicate in noise is an ability to exploit these level fluctuations to improve signal perception (Bee & Micheyl, 2008; Klump, 1996; Langemann & Klump, 2005). We investigated this possibility in frogs, for which the noise generated in breeding choruses impairs the ability of receivers to recognize and discriminate among individual calls (reviewed in Bee, 2012; Velez, Schwartz, & Bee, in press). In this comparative study, we examined the extent to which female green treefrogs (Hyla cinerea) and Cope’s gray treefrogs (Hyla chrysoscelis) exploit level fluctuations present in the noise of breeding choruses in recognizing conspecific advertisement calls. In both species, reproduction takes place in dense choruses in which males produce species-specific calls that mediate species recognition and female mate choice (Gerhardt, 2001). The fluctuations that occur in the level of noise in pure choruses of green treefrogs and Cope’s gray treefrogs differ and exhibit species-specific patterns (Velez & Bee, 2010, 2011; Velez, Hobel, Gordon, & Bee, in review). In this study, we used phonotaxis experiments to measure ‘signal recognition thresholds’ (Bee & Schwartz, 2009) in the presence of maskers that had (i) no level fluctuations, (ii) random fluctuations, or level fluctuations characteristic of (iii) conspecific choruses and (iv) heterospecific choruses. Our objective was to test three hypotheses about signal recognition in fluctuating noise backgrounds. According to the dip-listening hypothesis, listeners are able to catch brief ‘acoustic glimpses’ of target signals when the level of fluctuating background noise momentarily decreases. This hypothesis, therefore, predicts that receivers should recognize signals at lower thresholds in the presence of fluctuating maskers compared with non-fluctuating maskers. Dip listening is well known in the contexts of human hearing and speech perception (Bacon, Opie, & Montoya, 1998; Cooke, 2006; Fullgrabe, Berthommier, & Lorenzi, 2006; Gustafsson & Arlinger, 1994; Vestegaard, Fyson, & Patterson, 2011). Behavioral and neurophysiological studies of animals from diverse taxa show that simple tonal and narrowband noise signals can be detected at relatively lower thresholds in the presence of maskers with sinusoidal or random level fluctuations, compared with non-fluctuating maskers (birds: Bee, Buschermohle, & Klump, 2007; Hofer & Klump, 2003; Jensen, 2007; Klump & Langemann, 1995; Langemann & Klump, 2001, 2007; Nieder & Klump, 2001; cats: Nelken et al., Rotman, & Yosef, 1999; dolphins: Branstetter & Finneran, 2008; fish: Fay, 2011; frogs: Goense & Feng, 2012). The hypothesis that dip listening contributes to the ability of nonhuman animals to recognize communication signals in noisy social aggregations (Langemann & Klump, 2005) has so far received limited attention (but see Ronacher & Hoffmann, 2003). Here, we tested the hypothesis that female treefrogs experience dip listening in the behavioral context of communication by comparing masked thresholds for recognizing conspecific advertisement calls in the presence of a non-fluctuating control noise to those measured in fluctuating noises. Our second hypothesis stems from growing evidence that auditory systems are adapted to process physical properties of natural sounds (Rieke, Bodnar, & Bialek, 1995; Lewicki, 2002; Woolley, Fremouw, Hsu, Theunissen 2005; Smith & Lewicki, 2006). For example, auditory neurons transmit information more efficiently when stimuli have properties of natural sounds, compared to stimuli with artificial properties (Rieke et al., 1995; Woolley et al., 2005). In species that communicate in social aggregations, therefore, the auditory system may be adapted to exploit physical properties of natural soundscapes to improve signal recognition. However, the extent to which receivers exploit natural level fluctuations to improve signal recognition has not been tested. The few available studies on recognition of communication signals in fluctuating noise have used artificial (sinusoidal) level fluctuations (Ronacher & Hoffmann, 2003; Velez & Bee, 2010, 2011; Velez et al., in review). According to the natural soundscapes advantage hypothesis, we predicted that masked signal recognition thresholds would be lower when level fluctuations in the noise resembled those of natural soundscapes compared to completely artificial level fluctuations. Our third hypothesis originates from our recent findings showing that level fluctuations in the sounds of frog choruses exhibit species-specific patterns that result from species differences in the temporal properties of signals and signaling behaviors (Velez & Bee, 2010, 2011; Velez et al., in review). Langemann and Klump (2005) have suggested that animals may be adapted to exploit level fluctuations typical of the natural soundscape in recognizing communication signals. Thus we might expect animals to be relatively less impaired by noise typical of conspecific aggregations. The extent to which an ability to recognize communication signals in fluctuating backgrounds is ‘tuned’ to species-specific fluctuation patterns of the soundscape remains an open question. According to this species-specific advantage hypothesis, then, we predicted lower signal recognition thresholds in the presence of noise with fluctuations typical of conspecific choruses compared with heterospecific choruses.
