Data · collection · 2004
Apparent twin pups of the weddell seal near Mawson, Antarctica
Listed in NASA Earthdata CMR
Phocid seals give birth annually, generally to a single pup.
Description
Twins have been reported occasionally, either from observations made in utero or from observations of live pups in the field. Examples of the former are reports of two embryos in a Weddell seal, Leptonychotes weddellii and of twin foetuses of a southern elephant seal, Mirounga leonina.
Observations of two pups suckling one adult female have been reported for weddell seals. For southern elephant seals, an adult female that expelled two placentae and gave birth to a pup while another newborn pup was nuzzling the female, has also been reported. Here we use the expression 'apparent twins' to refer to reports of twin weddell seal pups that are based solely on field observations of two pups with the same adult female on several occasions.
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The data arising from this study has been recorded in the form of 3 observations. These observations can be found in the referenced paper. A copy of this paper is available for download as a pdf document from the provided URL.
Links
Documentation and papers
- Download point for the data data.aad.gov.au/eds/1110/download ↗
documentation · from NASA CMR
- data.aad.gov.au /aadc/metadata/citation.cfm?entry_id=twin_pups ↗
Citation reference for this metadata record and dataset
documentation · from NASA CMR
Catalogue records · 2
- CMR record cmr.earthdata.nasa.gov/search/concepts/C1214311346-AU_AADC.html ↗
catalogue entry · from NASA CMR
- CMR UMM-JSON cmr.earthdata.nasa.gov/search/concepts/C1214311346-AU_AADC.umm_json ↗
metadata API · from NASA CMR
Topics
- Stated by source
- Animals Vertebrates · FIELD SURVEYS · Post-Breeding Periods · Seals/Sea Lions/Walruses · Survival Rates · VISUAL OBSERVATIONS
Provenance · 1 source records, 14 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| NASA Earthdata CMR | C1214311346-AU_AADC | 15 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| access_level | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[instrument].gcmd_instrument:visual-observations | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biological-classification/animals-vertebrates/mammals/carnivores/seals-sea-lions-walruses | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/species-population-interactions/post-breeding-periods | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[measured_variable].gcmd:earth-science/biosphere/ecological-dynamics/species-population-interactions/survival-rates | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| concepts[platform].gcmd_platform:field-surveys | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| description | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/Abstract |
| license_text | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| publication_date | source · NASA CMR | connector:nasa_cmr@1.0.0 | |
| spatial | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/SpatialExtent |
| temporal | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/TemporalExtents |
| title | source · NASA CMR | connector:nasa_cmr@1.0.0 | /umm/EntryTitle |
| version_label | source · NASA CMR | connector:nasa_cmr@1.0.0 |