naa a22 4500 510746632 CHVBK 20180411083048.0 cr unu---uuuuu 180411e20131101xx s 000 0 eng 10.1007/s13199-013-0263-x doi (NATIONALLICENCE)springer-10.1007/s13199-013-0263-x Symbiotic assemblage associated with the tropical sea urchin, Salmacis bicolor (Echinoidea:Temnopleuridae) in the An Thoi archipelago, Vietnam [Elektronische Daten] [Temir Britayev, O. Bratova, P. Dgebuadze] The symbiotic assemblage associated with the tropical sea urchin, Salmacis bicolor was studied in the An Thoi archipelago, Vietnam. Five species of macrosymbionts were found on the surface of this echinoid host, including the polychaete, Ophiodromus sp. 3 (Hesionidae), gastropod, Vitreobalcis sp. (Eulimidae), shrimp, Allopontonia iaini (Palaemonidae), crab, Zebrida adamsii (Pilumnidae), and Ophiuroidea sp. This is the first record of A. iaini in association with S. bicolor in the coastal waters of Vietnam. The polychaete, Ophiodromus sp. 3 was located on the oral side of echinoids circled around the oral opening, while Vitreobalcis sp. was attached to the peristomial membrane. The shrimp, A. iaini and the crab, Z. adamsii were found among the spines; the latter was attached to the spines by chaelipeds. Of the 60 S. bicolor examined, 28 (46.6%) were infested, with an average number of symbionts per host of 0.52. The prevalence increased with increasing sea urchin test size. We did not find symbionts on urchins whose test diameter was less than 35mm. Almost all S. bicolor were inhabited by one symbiont, and in only three cases did we find two symbionts belonging to two different species on one host. Polychaete, Ophiodromus sp. 3 occurred most often, and only 1-6 specimens of the other species were found. The composition of the assemblage associated with S. bicolor was compared with that known for other assemblages associated with tropical sea urchins. The ecological characteristics of the association and the possible host-symbiont relationships are discussed. Springer Science+Business Media Dordrecht, 2013 Symbiotic assemblage nationallicence Echinoidea nationallicence Salmacis bicolor nationallicence Ophiodromus sp nationallicence Vietnam nationallicence Britayev Temir A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut Bratova O. A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut Dgebuadze P. A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut Symbiosis Springer Netherlands 61/3(2013-11-01), 155-161 0334-5114 61:3<155 2013 61 13199 https://doi.org/10.1007/s13199-013-0263-x text/html Onlinezugriff via DOI 1 brief-communication jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s13199-013-0263-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Britayev Temir A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Bratova O. A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut NATIONALLICENCE 700 1- Dgebuadze P. A.N. Severtzov Institute of Ecology and Evolution (RAS), Leninskiy prospekt, 33, 119071, Moscow, Russia aut NATIONALLICENCE 773 0- Symbiosis Springer Netherlands 61/3(2013-11-01), 155-161 0334-5114 61:3<155 2013 61 13199 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer