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Overview

Distribution

Range Description

The Medium-billed prion is found breeding at the Prince Edward Islands (South Africa), Crozet Islands, Amsterdam Islands and St Paul Island (French Southern Territories). It ranges at sea from South Africa east to New Zealand1.
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Source: IUCN

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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
This marine species normally occurs offshore, and can be found in areas of upwelling outside the breeding season. Its diet is comprised mostly of crustaceans, especially krill, but also fish and squid, all of which it catches either by hydroplaning, surface-seizing or filtering. Breeding starts in October in huge colonies up to and above one million individuals strong. It nests in burrows, usually on islands, inland on highland plateaux or on slopes with grass or shrubs. It can also be found in caves or crevices (del Hoyo et al. 1992).

Systems
  • Terrestrial
  • Marine
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Depth range based on 180 specimens in 2 taxa.
Water temperature and chemistry ranges based on 180 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): -0.372 - 10.709
  Nitrate (umol/L): 9.472 - 27.100
  Salinity (PPS): 33.739 - 34.234
  Oxygen (ml/l): 6.384 - 7.981
  Phosphate (umol/l): 0.939 - 1.896
  Silicate (umol/l): 5.723 - 34.323

Graphical representation

Temperature range (°C): -0.372 - 10.709

Nitrate (umol/L): 9.472 - 27.100

Salinity (PPS): 33.739 - 34.234

Oxygen (ml/l): 6.384 - 7.981

Phosphate (umol/l): 0.939 - 1.896

Silicate (umol/l): 5.723 - 34.323
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.
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Depth range based on 180 specimens in 2 taxa.
Water temperature and chemistry ranges based on 180 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): -0.372 - 10.709
  Nitrate (umol/L): 9.472 - 27.100
  Salinity (PPS): 33.739 - 34.234
  Oxygen (ml/l): 6.384 - 7.981
  Phosphate (umol/l): 0.939 - 1.896
  Silicate (umol/l): 5.723 - 34.323

Graphical representation

Temperature range (°C): -0.372 - 10.709

Nitrate (umol/L): 9.472 - 27.100

Salinity (PPS): 33.739 - 34.234

Oxygen (ml/l): 6.384 - 7.981

Phosphate (umol/l): 0.939 - 1.896

Silicate (umol/l): 5.723 - 34.323
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Pachyptila salvini

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Source: Barcode of Life Data Systems (BOLD)

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has a very large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size is extremely large, and hence does not approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.

History
  • Least Concern (LC)
  • Least Concern (LC)
  • Least Concern (LC)
  • Lower Risk/least concern (LR/lc)
  • Lower Risk/least concern (LR/lc)
  • Lower Risk/least concern (LR/lc)
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