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A sea butterfly.

[From New Latin Pteropoda, former order name : Greek pteron, feather, wing; see -pter + New Latin -poda, -pod.]

pter′o·pod′ adj.
pte·rop′o·dan (tə-rŏp′ə-dən) adj. & n.


(Animals) any small marine gastropod mollusc of the group or order Pteropoda, in which the foot is expanded into two winglike lobes for swimming and the shell is absent or thin-walled. Also called: sea butterfly


(ˈtɛr əˌpɒd)

1. belonging or pertaining to the Pteropoda, a group of gastropod mollusks having a foot with winglike lobes used in swimming.
2. a pteropod mollusk.
[1825–35; < New Latin Pteropoda (pl.); see ptero-, -pod]
References in periodicals archive ?
It's dissolving the shells of tiny free-swimming marine snails, called pteropods, which provide food for pink salmon, mackerel and herring, according to research published by OSU.
2], which erodes calcium-based structures of shell fish, corals and pteropods, and water quality, salinity changes, and erosion degrade critical spanning grounds in wetlands.
Pteropods are an important food source for salmon, herring, mackerel, and other fish in the Pacific Ocean.
It already is dissolving tiny plankton, called pteropods, in Antarctica that are eaten by many ocean creatures -- and that wasn't expected for 25 years.
The alarming situation came into light when Tarling and colleagues captured free-swimming sea snails called pteropods from the Southern Ocean in early 2008 and found under an electron microscope that the outer layers of their hard shells bore signs of unusual corrosion.
Copepods, larvaceans, and pteropods (Thecosomata) each occurred in >20% of the stomachs and had mean individual prey weights <0.
Key links in fish food chains, including pteropods, sea cucumbers, and starfish are vulnerable to ocean acidification, as are other organisms that make shells and reef systems.
145) Awareness of ocean acidification is difficult to promote in terms of public perception because fish, pteropods, and algae are not necessarily the warm and cuddly creatures on activists' radar.
The diet of Northern Fulmars includes a wide range of fish, squid, copepods, amphipods and, to a lesser extent, polychaetes, pteropods, and cnidarians (Camphuysen and van Franeker 1996, Hatch and Nettleship 1998, Phillips et al.
Adding in species that eat the calcifiers, such as pink salmon fattening up at sea on swimming snails called pteropods, would boost the percentage.
In the past half dozen years, science has focused on the effect of acidification on Northwest marine life, including oysters, pollock and tiny sea snails called pteropods.
Ocean acidification threatens the ability of pteropods to form their fragile shells, putting a range of commercially important fish at risk that depend on the small snails for food, including salmon, herring and yellowfin tuna as well as mammals like baleen whales, ringed seals and marine birds.