Tripneustes australiae
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publication ID |
https://doi.org/10.1111/jbi.15092 |
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DOI |
https://doi.org/10.5281/zenodo.15310307 |
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persistent identifier |
https://treatment.plazi.org/id/03824360-1F26-FFE1-FFBA-61854FCBFE39 |
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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 View 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 View 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 View 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 View TABLE 1 ).
3.4.1 | T. australiae View in CoL
The best habitat suitability model (variables: MD, SST, SWV, and pH) for T. australiae had a high predictive capacity (AUC = 0.996 ± 0.001 SD), indicating the model prediction was reliable. Depth was the best predictor of T. australiae habitat suitability (57.9%), followed by SST (39.7%), SWV (2.4%), and pH (0.1%). Tripneustes australiae habitat suitability was limited to the subtropical and temperate regions of Australia, including the offshore islands Lord Howe and Norfolk ( Figure 5 View FIGURE 5 ). This suggests that depth and temperature act to limit the distribution of T. australiae within these regions of Australia. When future habitat suitability was projected using SPP2-4.5 for the period 2090–2100, the latitudinal range of suitable habitat for T. australiae narrowed and shifted poleward ( Figure 5 View FIGURE 5 ). Suitable habitat also decreased on the offshore islands and increased in the northern part of New Zealand ( Figure 5 View FIGURE 5 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
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