TY - JOUR
T1 - Evolution of symbiosis with Lingula (brachiopoda) in the bivalve superfamily Galeommatoidea (Heterodonta), with description of a new species of Koreamya
AU - Goto, Ryutaro
AU - Ishikawa, Hiroshi
AU - Hamamura, Yoichi
AU - Sato, Shin'ichi
AU - Kato, Makoto
N1 - Funding Information:
We thank M. Owada for providing the DNA samples of Koreamyra arcuata; J. D. Taylor for providing the sampling information of Mysella vitrea; T. Haga and H. Yamashita for discussion; and Y. Kano and H. Fukumori for the preparation of the figures. This work was funded by a Japan Society for the Promotion of Science (JSPS) Grant to MK and a JSPS Research Fellowships for Young Scientists Grant to RG.
PY - 2014/5
Y1 - 2014/5
N2 - Many members of the bivalve superfamily Galeommatoidea have symbiotic associations with other marine benthic invertebrates. Among them, Koreamya arcuata (A. Adams, 1856) is distinctive because it is the only known bivalve symbiotic with brachiopods. Here we describe Koreamya setouchiensis n. sp. as the second example in this genus, based on specimens collected in and around the Seto Inland Sea, Japan. Similar to K. arcuata, this bivalve species attaches to the anterior end of the shell valve of living Lingula anatina Lamarck, 1801 by means of byssal threads. However, shell morphologies of the two bivalve species are clearly different; K. setouchiensis has an ovate shell, while K. arcuata has an elongated-triangular shell. These morphological differences are probably due to the difference in posture on the hosts. To understand how symbiotic association with Lingula evolved in Galeommatoidea, we performed molecular phylogenetic analyses using three nuclear (18S, 28S and H3) and one mitochondrial (COI) genes. The two Koreamya species with remarkably differently shaped shells were monophyletic, suggesting that their symbiotic associations with Lingula have the same evolutionary origin. Furthermore, the Koreamya clade formed a monophyletic group with anemone-associated galeommatoideans (Nipponomontacuta actinariophila and Montacutona sp.). This result and their morphological similarities suggest the possibility of host switching between sea anemones and Lingula.
AB - Many members of the bivalve superfamily Galeommatoidea have symbiotic associations with other marine benthic invertebrates. Among them, Koreamya arcuata (A. Adams, 1856) is distinctive because it is the only known bivalve symbiotic with brachiopods. Here we describe Koreamya setouchiensis n. sp. as the second example in this genus, based on specimens collected in and around the Seto Inland Sea, Japan. Similar to K. arcuata, this bivalve species attaches to the anterior end of the shell valve of living Lingula anatina Lamarck, 1801 by means of byssal threads. However, shell morphologies of the two bivalve species are clearly different; K. setouchiensis has an ovate shell, while K. arcuata has an elongated-triangular shell. These morphological differences are probably due to the difference in posture on the hosts. To understand how symbiotic association with Lingula evolved in Galeommatoidea, we performed molecular phylogenetic analyses using three nuclear (18S, 28S and H3) and one mitochondrial (COI) genes. The two Koreamya species with remarkably differently shaped shells were monophyletic, suggesting that their symbiotic associations with Lingula have the same evolutionary origin. Furthermore, the Koreamya clade formed a monophyletic group with anemone-associated galeommatoideans (Nipponomontacuta actinariophila and Montacutona sp.). This result and their morphological similarities suggest the possibility of host switching between sea anemones and Lingula.
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U2 - 10.1093/mollus/eyu009
DO - 10.1093/mollus/eyu009
M3 - Article
AN - SCOPUS:84899823705
VL - 80
SP - 148
EP - 160
JO - Journal of Molluscan Studies
JF - Journal of Molluscan Studies
SN - 0260-1230
IS - 2
ER -