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Walter Herwig 1978 (FFS): SeaStars (Echinodermata, Asteroidea)
Citatie
Danis B, Wilmes J, Jangoux M, 2008. Sea stars from the Walter Herwig FFS expedition. Contribution to the SCAR-Marine Biodiversity Information Network. https://doi.org/10.15468/kofnvn

Toegang tot data
Gearchiveerde data
Beschikbaarheid: Creative Commons License Deze dataset valt onder een Creative Commons Naamsvermelding 4.0 Internationaal-licentie.

Beschrijving
This dataset includes information on sea stars collected during one of the Walter Herwig expeditions (1978). Sampling took place during the FFS (Fischereiforschungsschiff) voyage. The expedition focused on the continental shelf of Patagonia, down to the Falklands (Malvinas) Islands. meer

The asteroids of the Walter Herwig FFS expedition have been identified in detail, based on the observation of external morphological characters using a binocular microscope. A wide variety of morphological characters was taken into consideration for the identification of the asteroids. For instance, shape and size of the pedicellaria, the skeletal structure (réseau squelettique) and the ossicles that form the mesh (number of spines/ossicle), thickness and aspect of the body wall, the position of the papula, the number of podia rows and the shape of the podia, structure and armature of the marginal plates, number and form of the adambulacral spines as well as the spines of the dental plates, etc. By means of a preexisting identification key of Atlantic asteroids (A.M. Clark, 1994), the observation of the morphological characters permitted to identify the order, the family, the genus and sometimes the species to which the considered individual belonged to. For the time being, there are no existing identification keys for Antarctic asteroids. For this reason, we consulted in addition multiple works of previous Antarctic expeditions (A.M. Clark (1962, 1994), R. Köhler (1906, 1907, 1908, 1911, 1912, 1917, 1920, 1923), W.K. Fisher (1911,1940), Sladen (1889), Mortensen (1932), E. Perrier (1891a), H. Ludwig (1905), Th. Studer (1874), I. Bernasconi (1967, 1964, 1966, 1972), Madsen (1950)) which allowed us to improve the identifications in dubious cases, thanks of their numerous detailed illustrations and descriptions of Antarctic asteroids. Synonymy was resolved by consulting the Register of Antarctic Marine Species (RAMS), that is accessible via internet and that compiles the most recent information about Antarctic asteroid taxonomy (Danis & Jangoux, 2007), delivering us in this way the valid species names.

Scope
Thema's:
Biologie > Invertebraten
Kernwoorden:
Marien/Kust, Verspreiding, PS, Zuidelijke Oceaan, Asteroidea

Geografische spreiding
PS, Zuidelijke Oceaan [Marine Regions]

Spreiding in de tijd
1978
Onbekend

Taxonomic coverage
Asteroidea [WoRMS]

Parameters
Aantallen (geteld)
Aanwezigheid van soorten
Voorkomen van soorten

Bijdrage door
Koninklijk Belgisch Instituut voor Natuurwetenschappen (IRScNB/KBIN), meerdata creatordata beheerderdata creator
Koninklijk Belgisch Instituut voor Natuurwetenschappen; Operationele Directie Natuurlijk Milieu (OD Natuur), meer

Gerelateerde datasets
Gepubliceerd in:
AntOBIS: Antarctic Ocean Biodiversity Information System, meer
(Gedeeltelijk) opgenomen in:
RAS: Register of Antarctic Species, meer

Dataset status: Afgelopen
Data type: Data
Data oorsprong: Onderzoek: veldexperiment
Metadatarecord aangemaakt: 2008-06-13
Informatie laatst gewijzigd: 2019-04-10
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