Fig 1.
Depth profiles for Haliclona sp. (H), Coscinoderma mathewsi (CM), Ircinia microconnulosa (IM), and Luffariella variabilis (LV).
Boxplots for each species show data-spread as upper and lower quartiles, median and mean depths (x).
Fig 2.
Larval dispersal responses to light for Ircinia microconnulosa (IM), Coscinoderma mathewsi (CM), Luffariella variabilis (LV), and Haliclona sp. (H).
The ordination, derived from correspondence analysis depicts larval behaviours when exposed to white (W), red (R) and blue (B) light for early (E) and late (L) released larvae. The plot explicitly shows dispersal as measured by attraction (+) to a light source (positive phototaxis) or a photonegative behaviour of dispersing away from a light source (-).
Fig 3.
Dispersal responses of Luffariella variabilis larvae to light.
Each bar represents the percentage of larvae that chose to move towards (Light), or away from (Dark), the light source. Light treatments included white, red and blue light for early (E) and late (L) larvae.
Fig 4.
Dispersal responses of Haliclona sp. larvae to light.
Each bar represents the percentage of larvae that chose to move towards (Light), or away from (Dark), the light source. Light treatments included white, red and blue light for early (E) and late (L) larvae.
Fig 5.
Dispersal responses of Coscinoderma mathewsi larvae to light.
Each bar represents the percentage of larvae that chose to move towards (Light), or away from (Dark), the light source. Light treatments included white, red and blue light for early (E) and late (L) larvae.
Fig 6.
Dispersal responses of Ircinia microconnulosa larvae to light.
Each bar represents the percentage of larvae that chose to move towards (Light), or away from (Dark), the light source. Light treatments included white, red and blue light for early (E) and late (L) larvae.
Table 1.
Summary statistics of chi-squared goodness of fit tests for the response of larvae attracted or avoiding white, red and blue light treatments.
(a) White, (b) Red, (C) Blue.
Fig 7.
Larval settlement to experimental light treatments.
Bars represent mean percentage settlement (±1SE) to light or dark halves of a Petri dish for Ircinia microconnulosa, Coscinoderma mathewsi, Luffariella variabilis, and Haliclona sp.