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7 results for “Dendropsophus minutus”
Figure 1 in Geographic variation in the acoustic signals of lesser treefrogs Dendropsophus minutus (Anura, Hylidae)
Figure 1. Spectrogram (above) and oscillogram (below) showing the acoustic characteristics of examples of the three note types of the vocal repertoire of Dendropsophus minutus. Recording identity: FNJV_13108 (Table S1). Recordist: Célio Haddad. Coordinates: −47.0697 (longitude), −22.8194 (latitude).
Figure 4 in Geographic variation in the acoustic signals of lesser treefrogs Dendropsophus minutus (Anura, Hylidae)
Figure 4. Variation in frequency bandwidth (PC2) and note duration (s) of Dendropsophus minutus calls as a function of mean annual temperature and annual precipitation. Mean trend lines and confidence intervals (95%) are shown. Each point represents the average acoustic parameter for each note type on each recording (i.e., individual). 2010; Morais et al., 2012; Llusia et al., 2013a; Annibale tics of anuran calls at short (Morais et al., 2012; Llusia et al., et al., 2020). 2013a) and possibly at longer time scales (this study). Call rate often increases with increasing air tempera- High-pitched sounds attenuate more quickly than lowture in anurans as a result of higher metabolic rate and pitched sounds, i.e., high-pitched sounds lose energy fastenergy expenditure (Wells, 2010). For example, in chaco er as they propagate away from the sound source (Brown treefrogs (Boana raniceps) (Cope, 1862), males produce & Riede, 2017). Additionally, high temperatures and low shorter calls, but in greater numbers, as the air tempera- humidity favor sound absorption (Snell-Rood, 2012), ture increases (Guimarães & Bastos, 2003). Given the which impairs sound propagation. We suggest that male recording′s limited duration, we could not measure call lesser treefrogs modulate call bandwidth to optimize sigrates. Yet, we speculate that in warmer temperatures, nal propagation depending on the air temperature. lesser treefrogs produce shorter notes at a higher rate, The call notes of D. minutus were shorter in sites optimizing call transmission while conserving energy with accumulated annual rainfall greater than 2000mm (Lingnau & Bastos, 2007). (Fig. 4D). We already expected that these acoustic signals Here, in addition to note duration, note bandwidth would vary with precipitation since relative humidity (represented by PC2, Table 1), but not note pitch (PC1), modulates the reproduction of many amphibian species decreased with increasing temperature (Fig. 4A). As (Aichinger, 1987; Llusia et al., 2013b). Rain noise can mask shown above, air temperature strongly affects the acous- anuran calls, reduce their acoustic activity (Ospina et al.,
Figure 2 in Geographic variation in the acoustic signals of lesser treefrogs Dendropsophus minutus (Anura, Hylidae)
Figure 2. Geographical scope of the sound recordings samples (n = 87) of the species Dendropsophus minutus in South America. Polygon (beige) represents the entire distribution, according to the spatial data made available by the International Union for Conservation of Nature (IUCN). Dots (yellow) represent the locations where the recordings were made. It is noteworthy that some recordings were made at the same geographical point, but with different individuals.
Figure 3 in Geographic variation in the acoustic signals of lesser treefrogs Dendropsophus minutus (Anura, Hylidae)
Figure 3. Variation in frequency (PC1) and bandwidth (PC2) of Dendropsophus minutus calls as a function of longitude. Mean trend lines and confidence intervals (95%) are shown. Each point represents the average acoustic parameter for each note type on each recording (i.e., individual).
FIGURE 2 in Dendropsophus minutus (Anura: Hylidae) of the Guiana Shield: using DNA barcodes to assess identity and diversity
FIGURE 2. Phenotypic variation among populations of 'D. minutus' in the Guianas. Clockwise from top left: near Imbaimadai, Guyana; road to Apura, Suriname; Lely Mt., western Para, Suriname; near Imbaimadai, Guyana.
FIGURE 1. A in Dendropsophus minutus (Anura: Hylidae) of the Guiana Shield: using DNA barcodes to assess identity and diversity
FIGURE 1. A: Geographic distribution of populations sampled for this study. Inset map indicates region focused on (Guianas) as well as the type locality of D. minutus (red star). Numbers correspond to localities listed in Specimens Examined section. B: Neighbor Joining tree illustrating relationships among major lineages of 'D. minutus' from the Guianas. Colored circles correspond to like colored localities in A. Bootstrap support values above 70% and 99% are indicated by a circle and asterisk respectively. Interrealtionships among A, B & C are poorly resolved and average pariwise sequence divergence (uncorrected) among these lineages does not exceed 1.5%. Average divergence between D and ABC is 9%.
FIGURE 1 in Using DNA barcodes to assess identity and diversity of Dendropsophus minutus: Failure?
FIGURE 1. Hawkins et al. CO1 dataset reduced to the 163 bp that overlaps with the conventional DNA barcode region. Branch tips are labeled with Genbank accession numbers, collection accessions and population coding. See www.barcodinglife.org, Published Projects, Dendropsophus minutus CO1: Failure or Success?
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