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The planocerid flatworm is a main supplier of toxin to tetrodotoxin-bearing fish juveniles.
Itoi, Shiro; Sato, Tatsunori; Takei, Mitsuki; Yamada, Riko; Ogata, Ryuya; Oyama, Hikaru; Teranishi, Shun; Kishiki, Ayano; Wada, Takenori; Noguchi, Kaede; Abe, Misato; Okabe, Taiki; Akagi, Hiroyuki; Kashitani, Maho; Suo, Rei; Koito, Tomoko; Takatani, Tomohiro; Arakawa, Osamu; Sugita, Haruo.
Afiliación
  • Itoi S; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan. Electronic address: sitoi@nihon-u.ac.jp.
  • Sato T; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Takei M; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Yamada R; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Ogata R; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Oyama H; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Teranishi S; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Kishiki A; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Wada T; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Noguchi K; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Abe M; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Okabe T; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Akagi H; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Kashitani M; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Suo R; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Koito T; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
  • Takatani T; Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, Bunkyo 1-14, Nagasaki, 852-8521, Japan.
  • Arakawa O; Graduate School of Fisheries Science and Environmental Studies, Nagasaki University, Bunkyo 1-14, Nagasaki, 852-8521, Japan.
  • Sugita H; Department of Marine Science and Resources, Nihon University, Fujisawa, Kanagawa, 252-0880, Japan.
Chemosphere ; 249: 126217, 2020 Jun.
Article en En | MEDLINE | ID: mdl-32088461
Tetrodotoxin (TTX), a potent neurotoxin, is found in various phylogenetically diverse taxa. In marine environments, the pufferfish is at the top of the food chain among TTX-bearing organisms. The accumulation of TTX in the body of pufferfish appears to be of the food web that begins with bacteria. It is known that toxic pufferfishes possess TTX from the larval/juvenile stage. However, the source of the TTX is unknown because the maternally sourced TTX is extremely small in quantity. Therefore, the TTX has to be obtained from other organisms or directly from the environment. Here, we report evidence that the source of TTX for toxic fish juveniles including the pufferfish (Chelonodon patoca) and the goby (Yongeichthys criniger) is in the food organisms, as seen in their gut contents. Next generation sequencing analysis for the mitochondrial COI gene showed that the majority of the sequence recovered from intestinal contents of these toxic fishes belonged to the flatworm Planocera multitentaculata, a polyclad flatworm containing highly concentrated TTX from the larval stage. PCR specific to P. multitentaculata also showed that DNA encoding the planocerid COI gene was strongly detected in the intestinal contents of the goby and pufferfish juveniles. Additionally, the planocerid specific COI sequence was detected in the environmental seawater collected from the water around the sampling locations for TTX-bearing fish. These results suggest that planocerid larvae are the major TTX supplier for juveniles of TTX-bearing fish species.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Platelmintos / Tetrodotoxina / Tetraodontiformes Límite: Animals Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Platelmintos / Tetrodotoxina / Tetraodontiformes Límite: Animals Idioma: En Revista: Chemosphere Año: 2020 Tipo del documento: Article Pais de publicación: Reino Unido