IUCN threat status:

Least Concern (LC)

Habitat

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Habitat and Ecology

Habitat and Ecology
The Australian Butterfly Ray is ademersal species that inhabits inshore, intertidal environments to depths of at least 60 m (Last and Stevens 2009). The species prefers open water environments that lack structure and have sandy, muddy or silty substrates.

Sexual dimorphism occurs in this species with females attaining a larger size than males. Females reach a disc width (DW) of at least 94 cm; males reach 57.5 cm DW (Jacobsen et. al.2009). The onset of sexual maturity occurs from 44-46 cm DW for females and 38-42 cm DW for males. This species isviviparous with developing embryos relying on both yolk and placental analogues. Uterine fecundity for this species is 1-6 embryos with size at birth estimated to be between 22 and 25 cm DW (Jacobsen et al. 2009). Preliminary estimates suggest the species has an annual reproductive cycle, producing a single litter every 12 months (I. Jacobsen, pers. obs.), although further information is required on this aspect of its biology.

Systems
  • Marine

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© International Union for Conservation of Nature and Natural Resources

Source: IUCN

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