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  • 1
    Electronic Resource
    Electronic Resource
    Early life history and recruitment of the tropical eel Anguilla bicolor pacifica, as revealed by otolith microstructure and microchemistry (1999)
    Springer
    Marine biology 133 (1999), S. 319-326 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Otolith microstructure and microchemistry of the tropical eel Anguilla bicolor pacifica Schmidt were examined in glass eels collected at the mouth of the Dumoga River, North Sulawesi Island, Indonesia. Ages of the glass eels examined (age at recruitment) ranged from 124 to 202 d (167 ± 19.3 d; mean ± SD), hatching being estimated as having occurred between November 1995 and March 1996. Otolith increment widths markedly increased from age 101 to 172 d (135 ± 18.2 d; mean ± SD), coincident with a drastic decrease in otolith Sr:Ca ratios, suggesting that metamorphosis began during that period. The duration of metamorphosis was estimated as 20 to 40 d, on the basis of otolith microstructural characteristics. The fluctuation patterns in otolith increment widths and Sr:Ca ratios were similar to those of the temperate Japanese eel A. japonica.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050470
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  • 2
    Electronic Resource
    Electronic Resource
    A model for the larval migration of the Japanese eel: roles of the trade winds and salinity front (1994)
    Springer
    Marine biology 119 (1994), S. 185-190 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A model that helps explain the mysterious long-distance migration of the Japanese eel (Anguilla japonica) is presented, based on oceanographic observations, satellite buoy drift experiments, and samplings of eel larvae taken in 1991. The trajectory of a 150 m depth buoy relased in the spawning area strongly suggests that A. japonica larvae spawned just south of the salinity front are transported westward by the North Equatorial Current (NEC). The larvae are then thought to be entrained into the Mindanao Current flowing southward along the Philippine Islands where A. japonica juveniles are scarcely distributed. These controversial results lead to the assumption that eel larvae are transferred from the NEC to the northward flowing Kuroshio, which distributes the eel larvae to the growth habitats of eastern Asia. In this eel larvae transfer model, a northward Ekman transport caused by trade winds plays an important role in explaining the wind-induced northward shift of the larvae together with the onset of diel vertical migration. Assuming that leptocephali greater than 20 mm initiate the vertical migration, a westward wind velocity greater than 5 to 10 m s-1 should be high enough to diminish the southward current velocity. When the physical and geophysical conditions — such as the salinity front for spawning activity, the water tunnel for westward larval transport, the Ekman transport by the trade wind for transfer of the larvae from the NEC to the Kuroshio, and the strong velocity of the Kuroshio for rapid transport to growth habitats — are well matched with the timing of the onset of vertical migration, large-scale eel migration could result.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00349555
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  • 3
    Electronic Resource
    Electronic Resource
    Differences in the early life history of the Australasian shortfinned eel Anguilla australis from Australia and New Zealand, as revealed by otolith microstructure and microchemistry (1999)
    Springer
    Marine biology 135 (1999), S. 381-389 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Otolith microstructure and microchemistry were examined in juveniles of Australasian shortfinned eel, Anguilla australis, from Australia and New Zealand. Patterns in otolith increment widths were similar in these two stocks. A marked increase in otolith increment width was found from age 138 to 198 d (mean ± SD: 164 ± 18.6 d) from Australia, 161 to 208 d (185 ± 17.3 d) from the western coast of New Zealand and 161 to 211 d (187 ± 18.9 d) from the eastern coast. These changes coincided with a drastic decrease in otolith Sr:Ca ratios, suggesting that metamorphosis began at these ages in each species. The duration of metamorphosis estimated from otolith microstructure was the same in the different stocks, 17 to 41 d (mean ± SD: 27 ± 5.4 d). Ages at recruitment were 186 to 239 d (mean ± SD: 208 ± 17.4 d) from Australia, 214 to 263 d (232 ± 19.8 d) from the western coast of New Zealand and 208 to 266 d (237 ± 20.0 d) from the eastern coast. There was a significant difference in the age between the Australian stock and the two stocks from New Zealand. No significant difference was found in the age between the latter two stocks. The difference in the period for the recruitment between Australian and New Zealand stocks seems to reflect their geographical separation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270050637
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  • 4
    Electronic Resource
    Electronic Resource
    Tetrodotoxin-producing bacteria from the blue-ringed octopus Octopus maculosus (1989)
    Springer
    Marine biology 100 (1989), S. 327-332 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Several live specimens of the blue-ringed octopus Octopus maculosus were collected from the Philippines in November 1985, and from Japan in February 1986, and the distribution of toxicity, along with toxin composition, in the posterior salivary gland and other soft parts were examined. Tetrodotoxin (TTX: 1400 mouse units g-1) was detected in the posterior salivary gland of a Japanese specimen, while not only the salivary gland but other soft parts were toxic in the Philippine specimens. The Philippine specimens contained TTX and anhydrotetrodotoxin, the Japanese specimen TTX, 4-epitetrodotoxin, and an unknown toxin. The posterior salivary gland, intestine and other parts were excised from the Philippine specimens and examined for bacterial flora. Twenty-two dominant strains were isolated and cultured in a 2xORI medium (Ocean Research Institute, Simidu and Tsukamoto 1985) at 20°C for 20 to 48 h. Cells were harvested by centrifugation, and disrupted by ultrasonication. The toxins were partially purified from the cell lyzate by ultrafiltration and Bio-Gel P-2 column-chromatography. Instrumental analyses disclosed that 16 of the 22 strains produced TTX and/or related substances. Six strains which clearly exhibited TTX productivity were identified as Alteromonas (2 strains), Bacillus (2), Pseudomonas (1) and Vibrio (1), based on biochemical and biological characteristics. Of these, one strain each of Bacillus and Pseudomonas produced TTX at a level detectable by the mouse assay.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00391147
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  • 5
    Electronic Resource
    Electronic Resource
    Timing of metamorphosis and larval segregation of the Atlantic eels Anguilla rostrata and A. anguilla, as revealed by otolith microstructure and microchemistry (2000)
    Springer
    Marine biology 137 (2000), S. 39-45 
    Details
    ISSN: 1432-1793
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Otolith microstructure and microchemistry were examined in juveniles of American (Anguilla rostrata) and European (A. anguilla) eels. Otolith increment width markedly increased from age 132 to 191 d (156 ± 18.9 d; mean ± SD) in A. rostrata and 163 to 235 d (198 ± 27.4 d; mean ± SD) in A. anguilla, both of which were coincident with drastic decreases in otolith Sr:Ca ratios, suggesting that metamorphosis from leptocephalus to glass eel began at those ages in each species. The duration of metamorphosis was estimated to be 18 to 52 d from otolith microstructure, for both species studied. Ages at recruitment were 171 to 252 d (206 ± 22.3 d; mean ± SD) in A. rostrata and 220 to 281 d (249 ± 22.6 d; mean ± SD) in A. anguilla. In these two species, positive linear relationships were found in ages between the beginning of metamorphosis and recruitment, suggesting that early metamorphosing larvae recruited at younger ages. Duration of the leptocephalus stage to recruitment in A. anguilla was about 40 d longer than that in A. rostrata. The geographical segregation between the two species in the Atlantic Ocean seems to be involved in the differences in the duration of the leptocephalus stage (age at metamorphosis).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002270000326
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  • 6
    Electronic Resource
    Electronic Resource
    Genetic variability of the Japanese eel Anguilla japonica (Temminck & Schlegel) related to latitude (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Ecology of freshwater fish 6 (1997), S. 0 
    Details
    ISSN: 1600-0633
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract— Isozyme genotypes of 400 glass eels recruiting to 4 localities along the east Asian coast, stretching from Taiwan to the Yalu River of northeastern China, were studied using starch gel electrophoresis. Geographic cline was found to exist in two loci: NADP-isocitrate dehygenase-1 and 6-phosphogluconate dehydrogenase. Frequencies of the most common allele of these two loci increased from south to north. In the latitudinal range of 25°N to 40°N, the magnitude of difference of IDH100 and PGD100 was 13% and 9% respectively. However, deviations from Hardy-Weinberg equilibrium were found to be insignificant in both loci at three of the four localities. The cline was, therefore, unlikely to have resulted from selection. Migration time-lag from different parts of the continent to the spawning ground in the western Pacific was suggested to be a possible reason for the formation of the cline.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0633.1997.tb00141.x
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  • 7
    Electronic Resource
    Electronic Resource
    Cloning and sequencing of an Na^+/H^+ antiporter gene from the marine bacterium Vibrio alginolyticus
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Biomembranes 1190 (1994), S. 465-468 
    Details
    ISSN: 0005-2736
    Keywords: (V. alginolyticus) ; DNA sequence ; Marine bacterium ; Sodium ion/proton antiporter
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0005-2736(94)90109-0
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  • 8
    Electronic Resource
    Electronic Resource
    Potent and preferential inhibition of Ca^2^+ / calmodulin-dependent protein kinase II by K252a and its derivative, KT5926
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 181 (1991), S. 423-429 
    Details
    ISSN: 0006-291X
    Keywords: [abr] CaM-kinase II; Ca^2^+/calmodulin-dependentprotein kinase II ; [abr] CaM; calmodulin ; [abr] HEPES; 4-(2-hydroxyethyl)-1-piperazineethane sulfonic acid
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(05)81436-6
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  • 9
    Electronic Resource
    Electronic Resource
    Production of cytotoxic factor(s) in human T cell lines transformed by a human retrovirus
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 130 (1985), S. 1052-1058 
    Details
    ISSN: 0006-291X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0006-291X(85)91722-X
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  • 10
    Electronic Resource
    Electronic Resource
    Purification and partial sequence analysis of human interleukin-2 derived from peripheral blood leukocytes
    Amsterdam : Elsevier
    Biochemical and Biophysical Research Communications 127 (1985), S. 182-190 
    Details
    ISSN: 0006-291X
    Keywords: [abr] Con-A; concanavalin-A ; [abr] HPLC; high performance liquid chromatography ; [abr] IL-2; interleukin-2 ; [abr] PBL; peripheral blood leukocytes ; [abr] SDS; sodium dodecyl sulfate ; [abr] TFA; trifluoroacetic acid ; [abr] TPA; 12-O-tetradecanoylphorbol-13-acetate
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0006-291X(85)80142-X
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