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Volume 27, Issue 21, Pages e2 (November 2017)

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Presentation on theme: "Volume 27, Issue 21, Pages e2 (November 2017)"— Presentation transcript:

1 Volume 27, Issue 21, Pages 3384-3389.e2 (November 2017)
Feeding Ecology and Morphology Make a Bamboo Specialist Vulnerable to Climate Change  Jussi T. Eronen, Sarah Zohdy, Alistair R. Evans, Stacey R. Tecot, Patricia C. Wright, Jukka Jernvall  Current Biology  Volume 27, Issue 21, Pages e2 (November 2017) DOI: /j.cub Copyright © 2017 Elsevier Ltd Terms and Conditions

2 Current Biology 2017 27, 3384-3389.e2DOI: (10.1016/j.cub.2017.09.050)
Copyright © 2017 Elsevier Ltd Terms and Conditions

3 Figure 1 Greater Bamboo Lemurs Are Specialized in Eating Woody Bamboo and Share Dental Traits with Giant and Red Pandas (A) The preferred diet of P. simus is bamboo shoots that, together with bamboo culm, take considerable time to consume. (B) Orientation patch count (OPC) maps of the dentitions of bamboo specialists show high surface complexity compared to species with generalized diets (tooth rows scaled to 150-row resolution). Anterior is toward left, and buccal is toward the top. See also Figure S1 and Table S1. Current Biology  , e2DOI: ( /j.cub ) Copyright © 2017 Elsevier Ltd Terms and Conditions

4 Figure 2 Behavioral Data from the Wild Reveals Highly Seasonal Patterns of Bamboo Shoot, Leaf, and Culm Feeding (A) A monitored P. simus group in RNP shows highly monotonous feeding on bamboo, with the diet consisting almost solely of bamboo shoots in December to April. Culm feeding is restricted to August to November, and bamboo leaves are eaten between peak shoot and culm feeding. Data are from 2006 to was a cyclone year that may have prolonged the availability of shoots beyond March. The mean number of monthly observation days is 10.3 (ranging from 3 to 20), with observed mean daily feeding of 64.5 min (ranging from 40 to 115). Error bars indicate the SEM. (B) Monthly rainfall, monitored in proximity to the P. simus study group during 2006 to 2008 shows that shoot feeding occurs during the rainy season and leaf and culm feeding during the dry season. Numbers in parentheses denote the number of months. Boxes enclose 50% of observations; the median and mean are indicated with a horizontal bar and circle, respectively, and whiskers denote range. See also Figure S2 and Table S2 Current Biology  , e2DOI: ( /j.cub ) Copyright © 2017 Elsevier Ltd Terms and Conditions

5 Figure 3 Regions Where P. simus Has Gone Extinct Exhibit Prolonged Dry Seasons (A) Precipitation in 10-min degree grid cells containing past and present P. simus localities (1950–2000 Worldclim.org data). The precipitation for the grid cell containing RNP is marked with a thick black line, and precipitation thresholds for the wet season (>250 mm) and dry season (<50 and <80 mm) reflecting seasonal patterns of RNP feeding data (Figure 2) are marked with red dotted lines. See also Figure S2. (B) P. simus localities throughout Madagascar (squares) and projected wet-season (feeding on shoots) and dry-season (feeding on culm and leaves) months. Except for the southwest, wet seasons are comparable throughout Madagascar. In contrast, dry seasons are prolonged west from the central escarpment. The white arrowhead denotes RNP in (B). Scale bar, 300 km. See also Figure S3 and Table S3. (C) Fossil localities with P. simus show prolonged durations of estimated dry-season feeding. When localities close to each other are combined (resulting in nine instead of 22 present localities), randomization tests between fossil and recent localities are p = 0.362, p = , and p = for >250 mm, <50 mm, and <80 mm thresholds, respectively. Boxes enclose 50% of observations; the median and mean are indicated with a horizontal bar and circle, respectively, and whiskers denote range. Current Biology  , e2DOI: ( /j.cub ) Copyright © 2017 Elsevier Ltd Terms and Conditions

6 Figure 4 Prediction of Future P. simus Feeding Seasons Show Prolonged Dry Seasons (A) Potential wet-season and dry-season feeding months in year 2070 climate (according to RCP 8.5 simulation data) indicate the overall prolongation of the dry season. Scale bar, 300 km. (B) Whereas duration of wet-season feeding is not predicted to change substantially, many present-day P. simus localities may experience long dry seasons comparable to fossil P. simus localities. Boxes enclose 50% of observations; the median and mean are indicated with a horizontal bar and circle, respectively, and whiskers denote range. See also Figure S4 and Table S4. Current Biology  , e2DOI: ( /j.cub ) Copyright © 2017 Elsevier Ltd Terms and Conditions


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