Pteropoda


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Related to Pteropoda: Thecosomata, Gymnosomata, pteropod ooze

Pteropoda

[tə′räp·ə·də]
(invertebrate zoology)
The sea butterflies, an order of pelagic gastropod mollusks in the subclass Opisthobranchia in which the foot is modified into a pair of large fins and the shell, when present, is thin and glasslike.

Pteropoda

 

a group comprising two orders of hermaphroditic opisthobranch planktonic marine mollusks.

The leg in Pteropoda is rudimentary: only its two lateral lobes (the winglike parapodia, by means of which the mollusks swim) are highly developed. In representatives of the order Thecosomata there is a spiral or bilaterally symmetrical shell or, sometimes, a pseudoshell. In representatives of the order Gymnosomata, the shell is absent. The body is semitransparent and often brightly colored. Pteropods are widely distributed. In the seas of the USSR, the most commonly encountered of the Thecosomata are Limacina; the most widespread of the Gym-nosomata are Clione. Pteropods serve as food for certain fishes and whales. The detritus of the shells makes up the mass of what is called the pteropod ooze in the South Atlantic. Remains of extinct pteropods date from as early as the Paleogene. The extinct Paleozoic Coniconchia are sometimes included among the Pteropoda.

References in periodicals archive ?
We first identified all the zooplankton per large taxonomic groups (typically Order), and later several taxonomic experts helped us to identify species for the 12 selected zooplankton groups: Copepoda, Cladocera, Decapoda, Euphausiacea, Amphipoda, Mysidacea, Siphonophora, Chaetognatha, Pteropoda, Appendicularia, Cephalopoda, and Pisces (fish larvae).
be/; Murano & Fukuoka, 2008), Decapoda (Williamson, 1957a, 1957b, 1960, 1962, 1967, 1983; MacDonald et al, 1957; Pike & Williamson, 1972; Fichman & Williamson, 1978; Albornoz & Wertmann, 1997; Anosov, 2000; Dos Santos & Lindley, 2001; Puls, 2001; Dos Santos & Gonzalez-Gordillo, 2004), Chaetognatha (Alvarino, 1963, 1967; Casanova, 1999), Pteropoda (Seapy, 1990; Spoel, 1996; Spoel et al, 1997; Angulo-Campillo, 2009), Hyperiid amphipods (Vinogradov et al, 1996; Zeidler, 2006), and ichthyoplankton (Brogan, 1992; Moser, 1996; Beltran-Leon & Rios-Herrera, 2000).
4% Mysidium ricketsi Harrison & Bowman), Pteropoda (<0.
Pteropoda, cladocera, and chaetognatha associations as hydrological indicators in the southern Brazilian Shelf
Among these are the studies by Boltovskoy (1975) on the associations between Foraminifera, Chaetognatha, and Pteropoda; Ramirez (1977) on Copepoda, Euphausiacea, Polychaeta, Amphipoda, Ostracoda, and Cladocera; Dadon & Boltovskoy (1982) on associations between Pteropoda, Euphausiacea, and Chaetognatha; and Fernandez-Araoz et al.
Ecological aspects of zooplankton (Foraminifera, Pteropoda and Chaetognatha) of the southwestern Atlantic Ocean.