Tripneustes australiae
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publication ID |
https://doi.org/10.1111/jbi.15092 |
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persistent identifier |
https://treatment.plazi.org/id/03824360-1F26-FFE0-FFBA-61854E7FFE5A |
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treatment provided by |
Felipe |
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scientific name |
Tripneustes australiae |
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3.2.2 | T. australiae View in CoL
Tripneustes australiae has a comparatively narrower subtropicalto-temperate distribution and thermal niche ( Figures 1 View FIGURE 1 and 2 View FIGURE 2 , Table 1). Tripneustes australiae has a latitudinal range of 8° from Julian Rocks (28°37′30″ S) in the north to Barunguba (Montague Island) (36°13′12″ S) in the south, with the mid-point at 32°25′30″ S near Forster in NSW ( Figures 1 View FIGURE 1 and 2 View FIGURE 2 , Table SA2). Tripneustes australiae is limited to the southwestern Pacific in the Australia-New Zealand region. The long-term temperature range across this distribution was 15.3°C–26°C, a realised thermal range of 10.7°C. The realised upper and lower limits of T. australiae are 26.6°C and 14.2°C, respectively ( Figure 2 View FIGURE 2 , Table 1). Outside our region of interest, T. australiae extends to the Kermadec Islands, northern New Zealand in the Pacific (29°42 29.0″ S, 178°08′23.1″ W) (Table SA3).
The distributions of T. australiae and T. g. gratilla overlap in eastern Australia and the Tasman Sea from 35°03′ S to 28°37′ S and 150°13′48″ E to 159°19′1.2″ E ( Figure 1 View FIGURE 1 ). Based on the distribution dataset, T. g. gratilla has a thermal range of 16.3°C–29.97°C, while T. australiae has a range of 15.3°C–26°C. The thermal range of T. g. gratilla is 2.97°C wider than that of T.australiae , and its realised upper limit is 3.8°C higher than T.australiae ( T.australiae : 26.6°C; T. g. gratilla : 30.4°C, Table 1). However, despite the contrasting thermal range and upper thermal limits of the two taxa, their realised lower thermal limits are remarkably similar. The realised lower thermal limit of T. australiae and T. g. gratilla were 14.2°C and 14.7°C, respectively, just a 0.5°C difference ( Table 1).
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