Results 211 to 220 of about 2,434 (235)
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Tetrodotoxin in two species of ribbon worm (Nemertini), Lineus fuscoviridis and Tubulanus punctatus
Toxicon, 1988Extracts of two species of ribbon worm, Lineus fuscoviridis and Tubulanus punctatus, had lethal potencies in mice from 15-503 MU/g of worm and from less than 10-540 MU/g, respectively. The toxins were partially purified by ultrafiltration and column chromatography using Bio-Gel P-2 and Bio-Rex 70 (H+ form).
Tamao Noguchi +2 more
exaly +3 more sources
High Rates of Self-Fertilization in a Marine Ribbon Worm (Nemertea)
The Biological Bulletin, 2015Organisms capable of self-fertilization ("selfing") typically exhibit two evolutionary syndromes: uniting high inbreeding depression with low levels of selfing, or low inbreeding depression with high levels of selfing. We examined the effect of inbreeding on fecundity and time to first reproduction in an apparently self-compatible, simultaneously ...
Serena A, Caplins, James M, Turbeville
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New records of ribbon worms (Nemertea) from Ceará, Northeast Brazil
Zootaxa, 2016Of 45 species of nemerteans reported for the Brazilian coast, only two were recorded from Brazil’s Northeast coast. Here we report seven new records for the state of Ceará, in Northeast Brazil: Tubulanus rhabdotus Côrrea, 1954, Carinomella cf. lactea Coe, 1905, Baseodiscus delineatus (Delle-Chiaje 1825), Cerebratulus cf.
Mendes, Cecili B. +2 more
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1995
Abstract These ‘flatworms’ are bilaterally symmetrical, with marked cephalization, mostly with a mouth, gut, and protonephridia, and typically with hermaphrodite reproductive systems, but without a special body cavity, anus, or circulatory system. Five classes may be recognized.
R Gibson, E W Knight-Jones
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Abstract These ‘flatworms’ are bilaterally symmetrical, with marked cephalization, mostly with a mouth, gut, and protonephridia, and typically with hermaphrodite reproductive systems, but without a special body cavity, anus, or circulatory system. Five classes may be recognized.
R Gibson, E W Knight-Jones
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Biodiversity Record: Terrestrial ribbon worms (genus Geonemertes) predation on arthropods
2023Nature in Singapore, 16, 1 ...
Ong, Rene S. L. +5 more
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Toxicon, 2014
Specimens of the toxic ribbon worm Cephalothrix simula from the Sea of Japan were screened for tetrodotoxin-producing bacteria. A single TTX-producing bacterial strain (No 1839) was isolated from tissues of C. simula and studied by immunohistochemical methods (including immunoelectron and immunofluorescent microscopies) with anti-TTX antibodies ...
Timur Yu Magarlamov, Alexei V Chernyshev
exaly +3 more sources
Specimens of the toxic ribbon worm Cephalothrix simula from the Sea of Japan were screened for tetrodotoxin-producing bacteria. A single TTX-producing bacterial strain (No 1839) was isolated from tissues of C. simula and studied by immunohistochemical methods (including immunoelectron and immunofluorescent microscopies) with anti-TTX antibodies ...
Timur Yu Magarlamov, Alexei V Chernyshev
exaly +3 more sources
Journal of Morphology, 2022
Abstract The integument of ribbon worms in the order Heteronemertea is distinct from the integuments in the other taxa of nemerteans due to the presence of a special subepidermal glandular layer, the cutis.
Alexandra O. Pereverzeva +2 more
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Abstract The integument of ribbon worms in the order Heteronemertea is distinct from the integuments in the other taxa of nemerteans due to the presence of a special subepidermal glandular layer, the cutis.
Alexandra O. Pereverzeva +2 more
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Upside-down behaviour of certain ribbon worms (phylum Nemertea)
Journal of Tropical EcologyAbstract Ribbon worms in the genus Balionemertes from Vietnam, the Philippines, Australia, and Guam—as well as Cephalothrix suni from Vietnam—were examined. Our observations indicate that the worms crawl mostly with their ventral surface upwards (the ventral surface being where the mouth opens), a behaviour that has not been documented in previous ...
Hiroshi Kajihara +2 more
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Toxicon, 2016
Transmission electron and confocal laser scanning (CLSM) microscopies with monoclonal anti-tetrodotoxin antibodies were used to locate tetrodotoxin (TTX) in tissues and gland cells of the ribbon worm Lineus alborostratus. CLSM studies have shown that the toxin is primarily localized in the cutis (special subepidermal layer) of the body wall and in the ...
Timur Yu Magarlamov, Alexei V Chernyshev
exaly +3 more sources
Transmission electron and confocal laser scanning (CLSM) microscopies with monoclonal anti-tetrodotoxin antibodies were used to locate tetrodotoxin (TTX) in tissues and gland cells of the ribbon worm Lineus alborostratus. CLSM studies have shown that the toxin is primarily localized in the cutis (special subepidermal layer) of the body wall and in the ...
Timur Yu Magarlamov, Alexei V Chernyshev
exaly +3 more sources
Species Diversity of Japanese Ribbon Worms (Nemertea)
2016This chapter provides a brief taxonomic conspectus of the Japanese nemerteans with photographs of 100 species. A total of 126 species are recognized in Japanese waters, but there are still at least 77 unreported/undescribed forms awaiting formal description.
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