Crayfish co-introduced symbiotic ostracod found on native crab in Japan: The first record of epibiont ostracod found a new host |
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| Affiliation: | 1. Graduate School of Environmental Science, Hokkaido University, N10 W5, Sapporo City, Hokkaido 060-0810, Japan;2. Department of Geoscience, Faculty of Science, Shizuoka University, Ohya 836, Shizuoka City 422-8529, Japan;1. Laboratório de Ultraestrutura Celular Hertha Meyer, Instituto de Biofísica Carlos Chagas Filho, Instituto Nacional de Biologia Estrutural e Bioimagem and Centro Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Brazil;2. Department of Biological and Medical Sciences, Oxford Brookes University, Oxford OX3 0BP, UK;1. Brinzal Owl Rescue Centre, Madrid, Madrid 28011, Spain;2. Animal Health Research Center (INIA-CISA), Valdeolmos, Madrid 28130, Spain;3. Veterinary Department, School of Biomedical and Health Sciences, Universidad Europea de Madrid, C/Tajo s/n, 28670 Villaviciosa de Odón, Madrid, Spain;4. Parasitology, Department of Animal Health, Veterinary Faculty, University of Extremadura, Cáceres, Spain.;5. Department of Biodiversity, Ecology and Evolution, Complutense University of Madrid, Madrid 28040, Spain;1. Departamento de Zoología, Instituto de Biología, Universidad Nacional Autónoma de México (UNAM), Avenida Universidad 3000, Ciudad Universitaria, 04510 México City, Mexico;2. Posgrado en Ciencias Biológicas, Universidad Nacional Autónoma de México, Avenida Universidad 3000, Ciudad Universitaria, 04510 México City, Mexico;1. Institute for Advanced Studies (IAS), Universiti Malaya, 50603 Kuala Lumpur, Malaysia;2. Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Malaysia;3. Rimba Ilmu Botanical Garden, Universiti Malaya, 50603 Kuala Lumpur, Malaysia;4. Department of Parasitology, Faculty of Medicine, Universiti Malaya, 50603 Kuala Lumpur, Malaysia;5. Higher Institution Centre of Excellence (HICoE), Tropical Infectious Diseases Research & Education Centre (TIDREC), Universiti Malaya, 50603 Kuala Lumpur, Malaysia;1. Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse-Faculty, University of Bern, Länggassstrasse 122, CH-3012 Bern, Switzerland;2. School of Agricultural, Forest and Food Sciences HAFL, Bern University of Applied Sciences, Länggasse 85, CH-3052 Zollikofen, Switzerland |
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| Abstract: | Ankylocythere sinuosa (Rioja, 1942), a symbiotic ostracod native to North America, was found from the Japanese mitten crab Eriocheir japonica (De Haan, 1835), a species native to Japan, collected from a pond in Shizuoka City, Shizuoka Prefecture, central Japan. Introduced North American crayfish Procambarus clarkii (Girard, 1852), which is a host of A. sinuosa in their native range, inhabits ponds sympatrically with Japanese mitten crabs, and it is thought that the ostracods transferred from the exotic crayfish to the native crabs. In recent years, along with the artificial transportation of crayfish around the world, their symbiotic ostracods also have been found on the body surfaces of exotic crayfish in Europe and Japan. However, no studies have confirmed the infestation of exotic ostracods on native crustaceans in the field. A wide range of developmental stages of A. sinuosa from juveniles to adults were found in Japanese mitten crabs, and mating individuals were also found. This strongly suggests that they can reproduce on the body surface of Japanese mitten crabs. In the future, it will be necessary to strengthen measures against alien species to prevent these exotic symbionts from infestating native ecosystems, and we also need to investigate the exact impact of this symbiont on Japanese mitten crabs. |
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