Wild South East

a nature blog of south-east Victoria, mostly Gippsland


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Swamp Skink

The Swamp Skink Lissolepis coventryi is one of my favourite animals but unfortunately is becoming increasingly threatened from human-induced changes to its wetland habitats as well as predation by foxes and cats. It is currently listed in Victoria as threatened under the Flora and Fauna Guarantee Act (1988).

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Swamp Skink Lissolepis coventryi, Bass Coast, Vic

Swamp Skinks grow up to 250mm in length and have a distinctive colouration. It’s body is typically a light olive green colour with two prominent black stripes along its olive-brown back. Its sides are black with light olive spots and patches. It can be confused with other species, particularly the similar sized and patterned White’s Skink Liopholis whitii (see photo below).

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White’s Skink Liopholis whitii, Hernes Oak, Vic

The habitat of White’s Skink is typically drier and it doesn’t seem to prefer wetland areas. The two skinks, however, were previously lumped together in the genus Egernia but recent studies have separated both these species from genus.

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Swamp Skink

 

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The current distribution of the Swamp Skink is the coastal plains of Victoria with populations extending slightly into coastal South Australia and NSW. The majority of these populations are highly fragmented and subject to increasing pressures. Swamps, wet heathland, saltmarshes, sedgelands and watercourses are the preferred habitats for the species and many of these have been drained for development or agriculture. Many of the small isolated patches of habitat left are subjected to further pressures from disease, pollution, weather events, poor drainage, amongst others. Some areas though have been protected and have a relatively stable population but much more sites need protection through habitat restoration, pest animal and weed control, and minimizing disturbance to existing habitats.

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Swamp Skink ‘condo’, Bass Coast, Vic.

If you live along the coastal plain of far S/E Australia keep an eye out for this species and submit any sightings to relevant departments. A great platform for the general public to submit sightings is the Atlas of Living Australia.  This citizen science based website collects data on Australia’s flora and fauna from a wide range of sources and can be accessed for information on species as well.

A fantastic article to read in relation to their requirements and management is the Swamp Skink management guidelines for the Mornington Peninsula (Clemann and Robertson 2015).

 

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Wanderings in a swamp.

I spent my lunchtime at work earlier this week traipsing through a great little wetland along the Bass Coast in SW Gippsland. The main reason was to ‘hunt’ down and photograph the elusive Swamp Skink Lissolepis coventryi which is currently listed as threatened under the Flora and Fauna Guarantee Act 1988Last year I came across a pair of these skinks and only managed a photo of the head of one of them so I was hoping to get a better one this time. The skinks tend to sun themselves on top of dense vegetation on the fringe of this small wetland but will scamper away at the slightest movement.

While waiting for the skinks to emerge into the full sun on top of a thicket of Prickly Moses Acacia verticillata and Coral Fern Gleichenia sp my eyes were diverted to several large iridescent blue-green beetles moving about on the Prickly Moses wattle. These turned out to be the famous Botany Bay Weevil Chrysolopus spectabilis. These are famous because they were one of the first insects to be collected in Australia when the Endeavour landed in 1770 in Botany Bay and it was named by Sir Joseph Banks. The skinks were a no-show so I decided to snap some pics of this beetle.

Botany Bay Weevil- Chrysolopus spectabilis

Botany Bay Weevil- Chrysolopus spectabilis

Some of these were in the process of mating while others were feeding on the new leaves of the Prickly Moses, wattles being their primary food.

Botany Bay Weevils mating

Botany Bay Weevils mating

Being summer the water in the central part of the wetland had receded and many of the wetland plants on the outskirts of the swamp were taking advantage of this and putting on new growth or flowering. The Large Tongue-orchid Cryptostylis subulata was one such plant.

Large Tongue Orchid

Large Tongue Orchid

This spectacular orchid, although not rare, is uncommon in areas of moist soil, particularly around wetlands. Tongue Orchids are pollinated by male Orchid Drupe Wasps Lissopimpla excelsa which confuse the shape and smell of the flower for a female wasp. The male subsequently tries to mate with it and in turn pollinates the flower. Several of these orchids were found but no wasps were seen, maybe next time I’ll get a photo.

So, although it’s a bummer about missing the Swamp Skink again, I did manage to find some interesting things on my half hour lunch break.

Swamp Skink in April 2014 at same wetland.

Swamp Skink in April 2014 at same wetland.