Peppered maskray
A small, speckled stingray of northeastern Australian coastal waters.
The peppered maskray (Neotrygon picta), also called the speckled maskray, is a small stingray from the Dasyatidae family. It lives in the shallow coastal waters off northeastern Australia. This ray has a thin, diamond-shaped body and reaches a maximum width of 32 centimeters (13 inches). Its upper side is light yellow to brown, covered with black spots and a brownish, net-like pattern. A row of tiny thorns runs along the middle of its back, and its tail is relatively short and whip-like, with fin folds on both the top and bottom.
This species prefers soft-bottom habitats like sand or fine sediment. It is a bottom-dwelling predator that mainly eats crustaceans, especially caridean shrimp, and polychaete worms. The peppered maskray gives birth to live young, with litters of one to three pups. During pregnancy, females supply their developing embryos with a nutrient-rich substance called histotroph, or "uterine milk." Although it is frequently caught as bycatch in bottom trawl fisheries, the species remains common, and large parts of its population live in unfished waters. Because of this, the International Union for Conservation of Nature (IUCN) lists it as Least Concern.
Scientists once thought the peppered maskray was just a color variation of the painted maskray (Neotrygon leylandi). However, molecular data from the Barcode of Life project showed it is a separate species. Peter Last and William White formally described it in a 2008 publication from the Commonwealth Scientific and Industrial Research Organisation (CSIRO). Their description was based on 13 specimens, with a female measuring 24 centimeters (9.4 inches) across, caught off Rockhampton, Queensland, serving as the holotype. The name *picta* comes from the Latin word for "painted" or "colored." Genetic studies of mitochondrial and nuclear DNA reveal that the peppered and painted maskrays are sister species, and they likely split from each other around 10 million years ago, during the Miocene epoch.
The peppered maskray’s pectoral fin disc is roughly 1.2 times wider than it is long, with slightly concave front edges and narrowly rounded outer corners. The snout forms an obtuse angle with a pointed tip. Its small, closely set eyes sit behind crescent-shaped spiracles. The nostrils are elongated, with a skirt-like curtain of skin between them that has a fringed rear edge forming two lobes.
Quick Facts
- Genus
- Neotrygon
- Species
- picta
Facts from the source article.
Lore & Background
The peppered maskray was once thought to be a color morph of the painted maskray (N. leylandi), but was recognized as a distinct species based on molecular data collected for the Barcode of Life project. It was described by Peter Last and William White in a 2008 CSIRO publication, with a female 24 cm across caught off Rockhampton, Queensland designated as the holotype. The specific epithet picta is derived from the Latin pictus ('painted' or 'colored'). Phylogenetic analysis using mitochondrial and nuclear DNA has found that the peppered and painted maskrays are sister species, estimated to have diverged around 10 million years ago during the Miocene.
This species has a thin, diamond-shaped pectoral fin disc roughly 1.2 times wider than long, with a row of tiny thorns along the midline of the back and a relatively short, whip-like tail with both upper and lower fin folds. Its upper surface is light yellow to brown with a darker reticulated pattern and numerous black spots, and like other Neotrygon species, it has a dark marking across the eyes that resembles a mask. It reaches a maximum width of 32 cm (13 in). The peppered maskray favors soft-bottomed habitats on the inner continental shelf in water less than 25 m deep, but may occur down to 100 m.
As a bottom-dwelling predator, it primarily consumes crustaceans (particularly caridean shrimp) and polychaete worms. Reproduction is viviparous, with females supplying developing young with histotroph ('uterine milk') during gestation. Litter sizes are one to three pups, and females give birth probably once per year. Males and females reach sexual maturity at around 17 and 18 cm across respectively.
Reader's Guide
The peppered maskray is a frequent bycatch of bottom trawl fisheries, particularly in the Northern Prawn Fishery (NPF) in the Gulf of Carpentaria, where it accounts for approximately 4.5% of the total catch. Over half of the rays caught by the NPF, including almost all males, are fatally crushed within the trawl. Despite this mortality, the NPF is not believed to have negatively affected the local population because its operational area does not include the waters where this species is most abundant. It is also caught frequently in scallop trawls operated by the Queensland East Coast Trawl Fishery. Elsewhere in its range, fishing pressure is relatively light due to external factors such as fuel prices. The species lacks economic value and is discarded by fisheries. Because it remains common and significant portions of its population appear to lie within unfished waters, including several Marine Protected Areas, the International Union for Conservation of Nature (IUCN) has assessed it as Least Concern. Its range extends along the coast of northeastern Australia from at least the Wessel Islands off Northern Territory to Hervey Bay in Queensland, and it is extremely common in some areas such as the Gulf of Carpentaria.
Did You Know?
- The peppered maskray was recognized as a distinct species from the painted maskray based on molecular data from the Barcode of Life project.
- Its specific epithet picta is derived from the Latin pictus, meaning 'painted' or 'colored'.
- Females give birth to litters of one to three pups, with newborns measuring 9–11 cm across.
- This species accounts for approximately 4.5% of the total catch of the Northern Prawn Fishery in the Gulf of Carpentaria.
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