TL;DR: This study is the first to report TTX in L. spadiceus, a new fish species found in Thailand's seas during April to July 2010, and raised a concern for people, not only Thais but also inhabitants of other countries situated on the Andaman coast; consuming puffers of the andaman seas is risky due to potential TTX intoxication.
Abstract: A total of 155 puffers caught from two of Thailand’s seas, the Gulf of Siam and the Andaman seas, during April to July 2010 were included in this study. Among 125 puffers from the Gulf of Siam, 18 were Lagocephalus lunaris and 107 were L. spadiceus which were the same two species found previously in 2000-2001. Thirty puffers were collected from the Andaman seas, 28 Tetraodon nigroviridis and two juvenile Arothron reticularis; the two new species totally replaced the nine species found previously in 1992-1993. Conventional mouse bioassay was used to determine the toxicity in all fish tissue extracts, i.e., liver, reproductive tissue, digestive tissue and muscle. One of each of the species L. lunaris and L. spadiceus (5.56 and 0.93%, respectively) were toxic. All 28 T. nigroviridis and 2 A. reticularis (100%) from the Andaman seas were toxic. The toxicity scores in T. nigroviridis tissues were much higher than in the respective tissues of the other three fish species. Liquid chromatography/tandem mass spectrometry (LC-MS/MS) revealed that the main toxic principle was tetrodotoxin (TTX). This study is the first to report TTX in L. spadiceus. Our findings raised a concern for people, not only Thais but also inhabitants of other countries situated on the Andaman coast; consuming puffers of the Andaman seas is risky due to potential TTX intoxication.
TL;DR: The morphological characteristics of these taxa necessitated emendation of the diagnosis for the genus Psettarium, to accommodate the presence of an oral sucker, multiple or entirely post-caecal testes and a degenerate posterior testis, and all three new taxa form a well-supported clade in phylogenetic analyses of the 28S and ITS2 regions.
TL;DR: The distribution and systematic position of puffer fishes from coastal waters of Parangipettai along the southeast coast of India are discussed and the distribution and taxonomic positions in terms of species availability and key characters are summarized.
Abstract: The present study discusses the distribution and systematic position of puffer fishes from coastal waters of Parangipettai along the southeast coast of India. The puffer fishes collected from three different stations (Mudasal odai, Annankoil and Samiyarpettai) included nine different species from five different genera: Lagocephalus, Arothron, Torquigener, Chelonodon and Takifugu in the order Tetraodontiformes and family Tetraodontidae, viz., Lagocephalus lunaris, Lagocephalus inermis, Arothron reticularis, Arothron hispidus, Arothron stellatus, Arothron immaculatus, Torquigener brevipinnis, Chelonodon patoca and Takifugu oblongus. This study also summarized the distribution and taxonomic positions in terms of species availability and key characters.
TL;DR: The inhibitory effects of toxin extracted from muscle or liver of five different puffer fishes captured on the Japanese sea coast were examined on voltage-dependent sodium current recorded from dissociated single rat hippocampal CA1 neurons, indicating that the amount of toxin in the liver or muscle differs between puffers.
TL;DR: Arothron reticularis (398mm in total length) belonging to the family Tetraodontidae was collected in the coastal waters off Hansan island using a set net in May 2019 as mentioned in this paper.
Abstract: A single specimen of Arothron reticularis (398 mm in total length), belonging to the family Tetraodontidae, was collected in the coastal waters off Hansan island using a set net in May 2019. The morphological characteristics of the specimen are as follows: large eyes and mouth, white spots on the body, and a white line surrounding the eyes in an annular shape. A result of maximum likelihood tree showed that A. reticularis is related to A. hispidus (93.6%). We proposed the Korean name “Geu-murl-mu-nui-kkeo-kkeurl-bok,” in accordance with the characteristics of the specimen.