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Venus
clams
Family Veneridae
updated
Oct 10
if you
learn only 3 things about them ...
Many venus clam species are edible.
However, don't eat wild clams as some may make you ill.
They
are eaten by snails that bore a hole in their shell. See
if you can find such a shell? |
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Where seen?
Another seafood favourite, in Singapore, these clams are also called
'la-la'. Venus clams are still commonly seen on some of our shores,
in sandy and rocky areas near seagrasses and coral rubble.
What are venus clams?
Venus clams belong to the Family Veneridae. There are more than 400
known species in this family with some of the most colourful of bivalves.
Many are edible.
Features: 3-4cm. The two-part
shells are thick. Some have ridges or various patterns. They are usually
buried just beneath the surface. The fine ridges on their shells to
help them stay buried. Clams in this and related families, have a
folded gill structure that is well developed for filtering out tiny
food particles. The Gladys Archerd Shell Collection website has a
drawing
of this complex filter.
Despite their thick hard shells they are still preyed upon by predators
such as moon snails,
drills, crabs
and shorebirds.
What do they eat? Like many other
bivalves, venus clams are filter feeders. They lie buried in the sand
and extend their siphons to the surface at high tide. They use their
siphons to suck in water and filter out microscopic food. The water
also brings fresh oxygen to the animal.
Human uses: Many of the commercially
important clams are venus clams. Some are also used as fish bait.
Venus clams are among the favourite seafood of people everywhere.
Like other filter-feeding clams, however, venus clams may be affected
by red tide and other
harmful algal blooms. Such clams can then be harmful to eat.
Status and threats: None of our
venus clams are listed among the threatened animals of Singapore.
However, like other creatures of the intertidal zone, they are affected
by human activities such as reclamation and pollution. Trampling by
careless visitors and over-collection can also affect local populations
of young clams. |

Venus clams are still harvested.
Pulau Sekudu, Jul 03

Half buried under a stone.
Chek Jawa, Sep 02

Siphon sticking out.
Changi, Feb 02
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Venus
clams on Singapore shores

Pulau
Semakau, Feb 09
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Pulau
Semakau, Feb 09
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Sentosa,
Apr 10

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Changi,
Apr 10

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Family
Veneridae recorded for Singapore
from Tan Siong
Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The
Molluscs of Singapore.
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Venus
clams seen awaiting identification
Species
are difficult to positively identify without close examination.
On this website, they are grouped
by external features for convenience of display.
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Anomalocardia
squamosa
Anomalocardia malonei
Antigona lamellaris
Bassina foliacea
Callista chinensis
Circe scripta (Script venus)
Circe tumefacta
Clementia papyracea
Dosinia cretacea
Dosinia exasperata
Dosinia juvenilis
Dosinia laminata
Dosinia trigona
Gafrarium dispar (Discrepant venus clam)
Gafrarium divaricatum (Common
venus clam)
Gafrarium pectinatum
Gafrarium tumidum (Ribbed venus
clam)
Irus irus
Marcia hiantina
Marcia flammea
Marcia japonica
Meretrix lusoria
Meretrix meretrix (Meretrix venus clam)
Paphia alapapilionis
Paphia gallus
Paphia rotundata
Paphia sinuosa
Paphia textile
Paphia undulata
Periglypta ata
Periglypta crispata
Periglypta puerpera
Pitar affinis
Pitar belcheri
Pitar citrinus
Pitar deshayesi
Pitar marrowae
Pitar striata
Placamen calophyllum
Placamen chlorotica
Placamen isabellina
Ruditapes philippinarum
Ruditapes variegatus
Tapes belcheri
Tapes literatus
Timoclea arakana
Timoclea chuangi
Timoclea decorata
Timoclea lionota
Venerupis chinensis
Venus toreuma
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Acknowledgements
With grateful thanks to André Sartori from eBivalvia
on EOL's Life Desk for identifying some of the Venus clams.
Links
References
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