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Species Card Details

Parechinus angulosus

Cape urchin

Species Card Photograph

Group:

Echinoderm

Size:

60mm

Distribution:

Parechinus angulosus is found along the South African coast from the Namibian border to southern Kwa-Zulu Natal.

PromethION Sequencing Report:

Output:

68.84 Gigabases

Approximate N50:

4.64 kilobases

Assembly N50:

67.65 kilobases

Contig number:

59 755

Draft Genome Assembly Statistics:

Assembler used:

Flye

Genome Length:

1.2 Gigabases

BUSCO completeness score (single and duplicated genes):

96.5% [S: 41.6%, D: 54.9%]

BUSCO database:

eukaryota

Importance:

Parechinus angulosus, the Cape urchin, plays a critical ecological role along South Africa's rocky shores, influencing algal distribution and maintaining community balance through its grazing activities. It is a key prey species for a variety of predators, including the endangered West Coast rock lobster (Jasus lalandii), thus supporting broader food web dynamics. While not a major fishery species itself, it contributes to ecosystem services that sustain economically important coastal fisheries.

Sample Contributor contact details:

Suzanne Redelinghuys
SAIAB and Rhodes University

Date Published:

2026-04-23

Photo credit:

© Clinton I. Green.

Flora

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