heteropod


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heteropod

(ˈhɛtərəˌpɒd)
n
(Zoology) any marine invertebrate with a foot or feet adapted for swimming
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Shell growth rates of pteropod and heteropod molluscs and aragonite production in the open ocean: implications for the marine carbonate system.
Morphology of the trackways suggests polypod and heteropod arthropods with different long appendages and a dorsaly/ventraly flattened body.
2003) indicates that they regularly dive down to depths of 100 m and may also forage at those depths, which may account for the high frequency of occurrence and high total percent volume of the heteropod Carinaria cithara.
The remaining 5% of the zooplankton community was composed of cladocerans, ostracods, doliolids, polychaete larvae, medusae, fish eggs, ctenophores, salps, cephalopod paralarvae, bivalves, isopods, appendicularians, pyrosomes, mysiids, heteropods and echinoderms larvae, stomatopods and cirripeds.
Other less abundant groups (<1%) such as siphonophores, medusae, cladocerans, heteropods, appendicularians and echinoderm larvae showed a negative correlation (-0.
These animals include some radiolarmans and foraminifera, as well as medusae, siphonophores, ctenophores, chaetognaths, pteropods, heteropods, appendicularians, salps, doliolids, and pyrosomes (e.
Krill, squid, and other large or fleshy prey can be cut or homogenized to an appropriate size and fed to many polyps, medusae, and heteropods.
For the analysis the prey species were grouped into seven major prey groups: euphausiids; fishes; salps; heteropods; jellyfishes (species other than salps and heteropods in the gelatinous zooplankton group); decapods; and miscellaneous prey items.
The heteropods was the highest prey group both in terms of weight (45.
1, 2), most transparent species are found in the following 10 groups, all of which are pelagic: cubozoans, hydromedusae, non-beroid ctenophores, hyperiid amphipods, tomopterid polychaetes, pterotracheid and carinariid heteropods, pseudothecosomatous pteropods, cranchiid squid, thaliaceans, and chaetognaths.
Among gastropods, the exclusively pelagic pterotracheid and carinariid heteropods, pseudothecosomatous pteropods, and phylliroid nudibranchs are highly transparent (Figs.