Title:

Obtusoecia (Halocyprida: Myodocopa: Ostracoda) a bipolar planktonic oceanic genus : Taxonomy, bathymetry and zoogeographical distribution

Subtitle:

Annales Zoologici, vol. 56, no 1 ; Planktonic ostracod genus Obtusoecia

Creator:

Angel, Martin Vivian ; Błachowiak-Samołyk, Katarzyna

Contributor:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Publisher:

Fundacja Natura optima dux

Place of publishing:

Warszawa

Date issued/created:

2006

Description:

Bibliogr. s. 208-210 ; S. 197-213 : il. ; 27 cm ; Nazwy taksonów w jęz. łac.

Type of object:

Czasopismo/Artykuł

Subject and Keywords:

halocyprid ; ostracods ; taxonomy ; bathymetry ; zoogegraphy ; bipolarity

Abstract:

Full detailed descriptions of the two species of Obtusoecia, one of two planktonic halocyprid ostracod genera that are bipolar, demonstrate that the taxonomic separation of these two forms formerly considered to be conspecific, is valid. The segregation of the genus from Porroecia is also validated. The value of characters of limbs other than the first and second antennae particularly in defining halocyprid genera is emphasised. Zoogeographical distributions of the two species based on comprehensive compilations of both published and unpublished data show that O. obtusata is confined to the North Atlantic, whereas O. antarctica has an Antarctic circumpolar distribution. Detailed bathymetric profiles show that O. obtusata is a shallow mesopelagic species that is overwhelmingly dominant at depths of 50–200 m in subpolar seas, and shows limited ability to submerge at lower depths, so thatit is restricted to seas that have a marked seasonal cycle of turn-over and stratification. It is postulated that the bathymetric distributions of the two species are similar, also that O. antarcticais more likely to be ancestral to O. obtusata than vice versa.

Relation:

Annales Zoologici

Volume:

56

Issue:

1

Start page:

197

End page:

213

Resource type:

Tekst

Detailed Resource Type:

Artykuł naukowy oryginalny

Format:

application/pdf

Source:

MiIZ PAN, patrz sygn. czas. P.255, vol 56, no 1 ; MiIZ PAN, patrz sygn. czas. P.4314, vol 56, no 1 ; click here to follow the link

Language:

eng

Language of abstract:

eng

Rights:

Prawa zastrzeżone - dostęp ograniczony

Terms of use:

Zasób chroniony prawem autorskim. Korzystanie dozwolone wyłącznie na terminalach Muzeum i Instytutu Zoologii PAN w zakresie określonym przez przepisy o dozwolonym użytku.

Digitizing institution:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Original in:

Biblioteka Muzeum i Instytutu Zoologii PAN

Projects co-financed by:

Unia Europejska. Europejski Fundusz Rozwoju Regionalnego ; Program Operacyjny Innowacyjna Gospodarka, lata 2010-2014, Priorytet 2. Infrastruktura strefy B + R

Access:

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