| 词条 | Broadley's flat lizard |
| 释义 |
| name = Augrabies flat lizard | image = Broadley's Flat Lizard (Platysaurus broadleyi) male (6857301934).jpg | image_caption = Male coloration at Augrabies Falls N.P. | genus = Platysaurus | species = broadleyi | authority = Branch & Whiting, 1997 }} The Augrabies flat lizard (Platysaurus broadleyi) is a species of lizard in the Cordylidae family endemic to South Africa. Platysaurus broadleyi is also called Broadley's flat lizard.[1][2][3] EtymologyBoth the specific name, broadleyi, and one of the common names, Broadley's flat lizard, are in honor of herpetologist Donald G. Broadley.[2] Geographic rangeThe Augrabies flat lizard has its geographic range between Augrabies Falls and Pella, North Cape in South Africa. This area includes the lower Orange River, Northern Cape Province, and Gordonia District.[3] HabitatThe habitat of P. broadleyi is rocky savannahs. DescriptionP. broadleyi females and juveniles have a dark brown back, with three thick, cream stripes on the back. These stripes may be broken up into spots, or have spots in between the stripes. The belly is white, sometimes with a black dot on it, and at the rear there is an orange color. The tail is straw-colored. Adult males have a bluish head and a greenish back. A darker area in the middle and the vestiges of the juvenile stripes and spots are also present. The forelimbs are yellow to orange, the throat is dark blue, and the belly is black in the front but becomes orange near the tail. Above the tail, it is a tan color, while below and on the sides, it is orange. All this coloration, while helping to attract females, also has a downside: predators such as kestrels easily spot them. Females, on the other hand, have much more subdued coloration and are less likely to be eaten.[4] The Augrabies flat lizard is very similar to Platysaurus capensis, or the Cape flat lizard, in scalation, but differs in having finer scalation on top of the forelimbs. HabitsAugrabies flat lizards are common on the granite walls of Augrabies Falls National Park, where they are exposed to thousands of tourists. In summer, they perform acrobatic leaps to catch black flies on the wing from the swarms that gather near rivers, but they will also eat ripe berries of Namaqua figs. Augrabies flat lizards will follow bird flocks to find these fruit-laden trees.[5] One major predator of this lizard is the rock kestrel. Research indicates that the higher the UV levels on a male's throat, the more dominant it is and is less likely to be challenged.[6] These flat lizards have been discovered to have a much higher visual sensitivity to UV light than other lizards species, allowing males to accurately distinguish between conspecifics of various fitness. They have as many as three times the number of UV photoreceptor cells in their retina compared to other lizards.[7] BreedingSexual maturity is reached at around {{convert|64|mm|in|abbr=on}} snout-vent length for both sexes. Females lay two clutches of eggs in early summer. Males demonstrate a preference for larger female mates, most likely due to the positive correlation between the size of a female and the eggs she produces.[8] See also
References1. ^Branch, Bill. 2004. Field Guide to Snakes and Other Reptiles of Southern Africa. Third Revised edition. Second impression. Sanibel Island, Florida: Ralph Curtis Books. 399 pp. {{ISBN|0-88359-042-5}}. (Platysaurus broadleyi, p. 199 + Plate 105). 2. ^1 Beolens B, Watkins M, Grayson M. 2011. The Eponym Dictionary of Reptiles. Baltimore: Johns Hopkins University Press. xiii + 296 pp. {{ISBN|978-1-4214-0135-5}}. (Platysaurus broadleyi, p. 39). 3. ^1 {{Cite web | url = http://reptile-database.reptarium.cz/species.php?genus=Platysaurus&species=broadleyi | title = Platysaurus broadleyi BRANCH & WHITING, 1997 | work = The Reptile Database | accessdate = 2007-08-06}} 4. ^{{Cite web | url = https://flickr.com/photos/jo_mur/2312505146/| title = Image of Flat Lizard (Platysaurus broadleyi ) | work = posted on Flickr | accessdate = 26 December 2008}} 5. ^{{Cite news | url = https://www.newscientist.com/article/mg16021653.600-follow-that-bird.html | title = Follow that bird | work = New Scientist | date = 1998-12-19 | accessdate = 2007-08-06}} 6. ^{{Cite journal | title = Ultraviolet signals fighting ability in a lizard | journal = Biology Letters | date = 2006-06-22 | volume = 2 | issue = 2 | pages = 169–172 |author1=Stapley, J. |author2=Whiting, M.J. |lastauthoramp=yes | doi = 10.1098/rsbl.2005.0419 | pmid = 17148355 | pmc = 1618919}} 7. ^Lizards found to send secret signals {{webarchive |url=https://web.archive.org/web/20110318214513/http://www.australiangeographic.com.au/journal/lizards-use-secret-uv-signals.htm/ |date=March 18, 2011 }}, Australian Geographic, March 16, 2011. 8. ^{{cite journal |last1=Whiting |first1=Martin |last2=Bateman |first2=Philip |title=Male preference for large females in the lizard Platysaurus broadleyi |journal=Journal of Herpetology |date=1999 |volume=33 |issue=2 |pages=309-312 |doi=10.2307/1565730 |url=https://www.jstor.org/stable/1565730?seq=1#metadata_info_tab_contents |accessdate=31 January 2019}} Further reading
External links{{Commons category|Platysaurus broadleyi}}
4 : Platysaurus|Endemic reptiles of South Africa|Lizards of Africa|Reptiles described in 1997 |
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