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6 results for “Hystrix cristata”
Fig. 2 in First report of Giardia duodenalis infection in the crested porcupine (Hystrix cristata L., 1758)
Fig. 2. Sampling area and location of Hystrix cristata faecal samples: A). Location of faecal samples collected in each zone (green dots), from captured (blue dots) and road-killed (red dot) animals; B). Location of Giardia spp. positive faecal samples (pink dots). (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
Fig. 3 in First report of Giardia duodenalis infection in the crested porcupine (Hystrix cristata L., 1758)
Fig. 3. Parasites identified in 52 crested porcupine faecal samples: A-C). Gastrointestinal strongyle eggs (59.8–78 μm x 28.6–44.2 μm) (A and C 400X, scale bar 15 μm; B 100X, scale bar 60 μm); D). Capillariid egg measuring 59.8 μm × 26 μm (400X, scale bar 15 μm); E, F). Trichuris spp. eggs of 60 x 28.6–40 μm in dimensions (400X, scale bar 15 μm); G). Coccidian oocyst measuring 36.4 μm × 23.4 μm (400X, scale bar 15 μm).
Fig. 1 in First report of Giardia duodenalis infection in the crested porcupine (Hystrix cristata L., 1758)
Fig. 1. Map of Italy: in the inset detail of the study area (border red line), zones (close areas in black, Z1-Z7), transects (white lines), and Hystrix cristata trap-sites (red arrows, T1-T7) where faecal samples were collected from November 2018 to May 2019. (For interpretation of the references to colour in this figure legend, the reader is referred to the Web version of this article.)
On following pages: 3. Asiatic Brush-tailed Porcupine (Atherurus macrourus); 4. Sumatran Porcupine (Hystrix sumatrae); 5. Thick-spined Porcupine (Hystrix crassispinis); 6. Philippine Porcupine (Hystrix pumila); 7. Malayan Porcupine (Hystrix brachyura); 8. Sunda Porcupine (Hystrix javanica); 9. Crested Porcupine (Hystrix cristata); 10. Cape Porcupine (Hystrix africaeaustralis); 11. Indian Crested Porcupine (Hystrix indica). in Hystricidae
On following pages: 3. Asiatic Brush-tailed Porcupine (Atherurus macrourus); 4. Sumatran Porcupine (Hystrix sumatrae); 5. Thick-spined Porcupine (Hystrix crassispinis); 6. Philippine Porcupine (Hystrix pumila); 7. Malayan Porcupine (Hystrix brachyura); 8. Sunda Porcupine (Hystrix javanica); 9. Crested Porcupine (Hystrix cristata); 10. Cape Porcupine (Hystrix africaeaustralis); 11. Indian Crested Porcupine (Hystrix indica).
Data from: Long live the alien: is high genetic diversity a pivotal aspect of crested porcupine (Hystrix cristata) long-lasting and successful invasion?
Studying the evolutionary dynamics of an alien species surviving and continuing to expand after several generations can provide fundamental information on the relevant features of clearly successful invasions. Here, we tackle this task by investigating the dynamics of the genetic diversity in invasive crested porcupine (Hystrix cristata) populations, introduced to Italy about 1500 years ago, which are still growing in size, distribution range and ecological niche. Using genome-wide RAD markers, we describe the structure of the genetic diversity and the demographic dynamics of the H. cristata invasive populations and compare their genetic diversity with that of native African populations of both H. cristata and its sister species, H. africaeaustralis. First, we demonstrate that genetic diversity is lower in both the invasive Italian and the North Africa source range relative to other native populations from sub-Saharan and South Africa. Second, we find evidence of multiple introduction events in the invasive range followed by very limited gene flow. Through coalescence-based demographic reconstructions, we also show that the bottleneck at introduction was mild and did not affect the introduced genetic diversity. Finally, we reveal that the current spatial expansion at the northern boundary of the range is following a leading-edge model characterized by a general reduction of genetic diversity towards the edge of the expanding range. We conclude that the level of genome-wide diversity of H. cristata invasive populations is less important in explaining its successful invasion than species-specific life-history traits or the phylogeographic history in the native source range.
Data from: Long live the alien: is high genetic diversity a pivotal aspect of crested porcupine (Hystrix cristata) long-lasting and successful invasion?
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