Jimi, Naoto; Nakajima, Hiroki; Sato, Taigi; Gonzalez, Brett C.; Woo, Sau Pinn; Rouse, Greg W.; Britayev, Temir. (2023). Two new species of Parahesione (Annelida: Hesionidae) associated with ghost shrimps (Crustacea: Decapoda) and their phylogenetic relationships. PeerJ. 11: e16346: 1-25.

482367

10.7717/peerj.16346 [view]

urn:lsid:zoobank.org:pub:6D64D9F4-0E29-4F67-B941-300E1888108C [view]

Jimi, Naoto; Nakajima, Hiroki; Sato, Taigi; Gonzalez, Brett C.; Woo, Sau Pinn; Rouse, Greg W.; Britayev, Temir

2023

11: e16346: 1-25

Publication

Annelidabase

Available for editors  

Two new species of Hesionidae, Parahesione pulvinata sp. nov. and Parahesione apiculata sp. nov. are described based on materials collected at tidal flats in Okinawa (Japan) from burrows of the ghost shrimps Neocallichirus jousseaumei and Glypturus armatus. The two new species are characterized by having eight enlarged cirri, dorsal cirrophores with dorsal foliose lobe and biramous parapodia, and by lacking median antenna. Parahesione apiculata sp. nov. has digitate lobes on the posterior margin of the dorsal foliose lobe (absent in P. pulvinata sp. nov.). The two new species were never found outside the ghost shrimp burrows, suggesting they are obligate symbionts. Phylogenetic analyses based on four concatenated genes suggest that the symbiotic lifestyle has evolved several times in Hesionidae.

Japan

Molecular systematics, Molecular biology

Annelida
Polychaeta

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