An unusual habitat for bivalves: rediscovery of the enigmatic commensal clam Sagamiscintilla thalassemicola (Habe, 1962) (Bivalvia: Galeommatoidea) from spoon worm’s spoon
An unusual habitat for bivalves: rediscovery of the enigmatic commensal clam Sagamiscintilla thalassemicola (Habe, 1962) (Bivalvia: Galeommatoidea) from spoon worm’s spoon
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双壳类的不寻常栖息地:从勺子虫的勺子中重新发现神秘的共生蛤 Sagamiscintilla thalassemicola(Habe,1962)(双壳纲:Galeommatoidea)
DOI:
10.1007/s12526-018-0897-2
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发表时间:
2018
影响因子:
1.6
通讯作者:
Hiroshi Ishikawa
中科院分区:
文献类型:
--
作者:
Ryutaro Goto;Hiroshi Ishikawa
Sagamiscintilla thalassemicola(Bivalvia: Galeommatoidea: Galeommatidae sensulato) is a white-robed commensal clam that lives on the body surface of spoon worms (Annelida: Echiura). This species was described based on specimens collected from the spoon wormAnelassorhynchus mucosus(Thalassematidae) in Amakusa, Kyushu, Japan, in 1962, but there has been no reliable record since the first description. Thus, some researchers suspected that this species may have become extinct. In this study, we rediscovered this species from the spoon-shaped proboscis of the echiuranAnelassorhynchussp. in Shikoku and Kyushu Islands, Japan. Although the original description did not mention the details of its host use pattern, we found that this species lives almost exclusively within the proboscis gutter of the host, where it is almost hidden from the outside. Such a cryptic habitat is probably the reason why this species has remained undiscovered for over 50 years. Living hidden in the host probosces probably provides an anti-predation benefit forS. thalassemicola. The host echiurans create ciliary water currents on the proboscis gutter to transfer food particles into the mouth, and the bivalves can utilize this water currents for respiration and filter feeding.Sagamiscinitlla thalassemicolais distinctive among ectocommensal galeommatoideans in having a mantle that fully covers the shell valves. It may be a morphological adaptation to protect the shell valves from sand and other hard particles transferred through the proboscis gutter of the host.
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DOI:
--
发表时间:
2003
期刊:
--
影响因子:
--
作者:
G. Paulay
通讯作者:
G. Paulay
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
A. Anker
通讯作者:
A. Anker
DOI:
10.5134/176470
发表时间:
1981
期刊:
Publications of the Seto Marine Biological Laboratory
影响因子:
--
作者:
T. Habe
通讯作者:
T. Habe
DOI:
--
发表时间:
2010
期刊:
--
影响因子:
--
作者:
I. Ikeda
通讯作者:
I. Ikeda
影响因子:
1.3
作者:
P. Mikkelsen;R. Bieler
通讯作者:
R. Bieler