tetrapygus niger

ANIMALIA / ECHINODERMATA / ECHINOIDEA / ARBACIOIDA / ARBACIIDAE / TETRAPYGUS / NIGER

Tetrapygus niger (Molina, 1782)

alien invasive

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Morphological description

Tetrapygus niger has a round almost flattened test, purple in colour. It is 60mm in test diameter with strong, pointed dark brown to black spines (Branch et al., 2013).

Global distribution

T. niger occurs along the temperate Pacific coast from northern Peru to the Strait of Magellan (southern Chile) (Rodríguez and Fariña, 2001).

SA distribution

In 2007 a population of T. niger was recorded from a land-based aquaculture dam in Alexander Bay, a diamond- mining town on the west coast of South Africa (Haupt et al., 2010).

Movement

Small-sized individuals of T. niger are observed between the shallow 2m depth subtidal in June and 2.5m depth lower intertidal zones in September and November (Rodriguez and Ojeda, 1993).

Trophic strategy

Tetrapygus niger is a benthic grazer that has a broad diet which principally comprises of kelp, but also including algal turfs, encrusting coralline algae, drift algae, mussel recruits, and crustaceans (Hidalgo et al., 2013).

Reproduction

The shallower portions of the subtidal zone and probably the lower intertidal zone as well are important nursery areas for T. niger in Chile (Rodriguez and Ojeda, 1993).

Biome

Inshore, Intertidal

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: Data partners records: DNA:

Residence status

Occurrence in African countries and South African provinces. Residence status indicates if a taxon is indigenous, endemic, or alien in a specific region. This data is based on specimen records and literature.

FSA

BOT

NAM

ESW

LES

KZN

Absent

Indigenous

Endemic

Naturalised

Invasive

Names and Sources

Common Name	Language
Black Seaurchin	En
Black Urchin	En
Black Sea Urchin

Classification

KINGDOM Animalia

PHYLUM Echinodermata

CLASS Echinoidea

ORDER Arbacioida

FAMILY Arbaciidae

GENUS Tetrapygus

SPECIES niger

No results found for Tetrapygus niger (Molina, 1782)

Uses

Unknown

0 results for Tetrapygus niger (Molina, 1782)

Records
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Year

Province

Animal occurrence records per dataset

Animal occurrence records per year

Occurrence records map

This map contains point-based occurrences at different locations

iNaturalist: Data partners records: DNA:

2003

JOURNAL ARTICLE

Predicting territorial behavior in symbiotic crabs using host characteristics : a comparative study and proposal of a model

Baeza, J, Thiel, M. 2003. Predicting territorial behavior in symbiotic crabs using host characteristics : a comparative study and proposal of a model Vol. 142 pp.93–100.

2013

BOOK

Two Oceans: A guide to the marine life of southern Africa

Branch, Professor, Griffiths, Professor, Beckley, Professor. 2013. Two Oceans: A guide to the marine life of southern Africa. Random House Struik pp.456.

1910

JOURNAL ARTICLE

The Echinoderms of Peru

Clark, HL. 1910. The Echinoderms of Peru Vol. 52 pp.258.

2011

JOURNAL ARTICLE

Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis

Dumont, C., Gaymer, C., Thiel, M.. 2011. Predation contributes to invasion resistance of benthic communities against the non-indigenous tunicate Ciona intestinalis Vol. 13 pp.2023–2034.

aug

JOURNAL ARTICLE

Grazing effects of the sea urchin Tetrapygus niger and the snail Tegula atra on a rocky shore of central Peru

Iribarne, Oscar, Hidalgo, Fernando, Firstater, Fausto, Lomovasky, Betina. aug. Grazing effects of the sea urchin Tetrapygus niger and the snail Tegula atra on a rocky shore of central Peru Vol. 93 pp.2059–2066.

2015

JOURNAL ARTICLE

The Chilean black urchin , Tetrapygus niger ( Molina , 1782 ) in South Africa : gone but not forgotten

Mabin, Clova, Wilson, John, Robinson, Tamara. 2015. The Chilean black urchin , Tetrapygus niger ( Molina , 1782 ) in South Africa : gone but not forgotten Vol. 4 pp.261–264.

2001

JOURNAL ARTICLE

Effect of drift kelp on the spatial distribution pattern of the sea urchin Tetrapygus niger: a geostatistical approach

Rodríguez, Sebastián, Fariña, José. 2001. Effect of drift kelp on the spatial distribution pattern of the sea urchin Tetrapygus niger: a geostatistical approach Vol. 81 pp.179–180.

1993

JOURNAL ARTICLE

Distribution patterns of Tetrapygus niger (Echinodermata, Echinoidea) off the central Chilean coast

Rodriguez, S., Ojeda, F.. 1993. Distribution patterns of Tetrapygus niger (Echinodermata, Echinoidea) off the central Chilean coast Vol. 101 pp.157–162.

mar

JOURNAL ARTICLE

Responses of the black sea urchin Tetrapygus niger to its sea-star predators Heliaster helianthus and Meyenaster gelatinosus under field conditions

Urriago, Juan, Himmelman, John, Gaymer, Carlos. mar. Responses of the black sea urchin Tetrapygus niger to its sea-star predators Heliaster helianthus and Meyenaster gelatinosus under field conditions Vol. 399 pp.17–24.

2005

JOURNAL ARTICLE

Population biology of the subtidal kelps Macrocystis integrifolia and Lessonia trabeculata (Laminariales, Phaeophyceae) in an upwelling ecosystem of northern Chile: Interannual variability and El Ni??o 1997-1998

Buschmann, Alejandro, Vega, J., Vásquez, Julio. 2005. Population biology of the subtidal kelps Macrocystis integrifolia and Lessonia trabeculata (Laminariales, Phaeophyceae) in an upwelling ecosystem of northern Chile: Interannual variability and El Ni??o 1997-1998 Vol. 78 pp.33–50.