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  • 1
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    Oceanic spawning migration of the European eel (Anguilla anguilla) (2009)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2009-09-26
    Description: European eels (Anguilla anguilla) undertake a approximately 5000-kilometer (km) spawning migration from Europe to the Sargasso Sea. The larvae are transported back to European waters by the Gulf Stream and North Atlantic Drift. However, details of the spawning migration remain unknown because tracking eels in the Atlantic Ocean has, so far, eluded study. Recent advances in satellite tracking enable investigation of migratory behavior of large ocean-dwelling animals. However, sizes of available tags have precluded tracking smaller animals like European eels. Here, we present information about the swimming direction, depth, and migratory behavior of European eels during spawning migration, based on a miniaturized pop-up satellite archival transmitter. Although the tagging experiment fell short of revealing the full migration to the Sargasso Sea, the data covered the first 1300 km and provided unique insights.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Aarestrup, Kim -- Okland, Finn -- Hansen, Michael M -- Righton, David -- Gargan, Patrik -- Castonguay, Martin -- Bernatchez, Louis -- Howey, Paul -- Sparholt, Henrik -- Pedersen, Michael I -- McKinley, Robert S -- New York, N.Y. -- Science. 2009 Sep 25;325(5948):1660. doi: 10.1126/science.1178120.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Technical University of Denmark (DTU), National Institute of Aquatic Resources, Vejlsovej 39, DK-8600 Silkeborg, Denmark. kaa@aqua.dtu.dk〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19779192" target="_blank"〉PubMed〈/a〉
    Keywords: Anguilla/*physiology ; *Animal Migration ; Animals ; Atlantic Ocean ; Body Temperature Regulation ; Ecosystem ; Europe ; Reproduction ; *Swimming ; Temperature ; Water Movements
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
    Electronic Resource
    Electronic Resource
    ZnO transducers on InSb for low-temperature ultrasonics (1987)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 61 (1987), S. 5199-5201 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A reproducible method for the fabrication of ZnO transducers on InSb substrates is described. These transducers are being used for ultrasonic attenuation measurements over a wide low-frequency range (90–600 MHz) at very low temperatures(0.1–4.2 K). They have been characterized by their x-ray diffraction patterns, their insertion loss, and their contribution to the acoustic attenuation in InSb at low temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.338303
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  • 3
    Electronic Resource
    Electronic Resource
    Rotational Isomerization of Esters on Ni(111) (1995)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 99 (1995), S. 17906-17916 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100051a016
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  • 4
    Electronic Resource
    Electronic Resource
    RAIRS and TPD Study of Methyl Formate, Ethyl Formate, and Methyl Acetate on Ni(111) (1994)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 116 (1994), S. 5847-5856 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja00092a040
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  • 5
    Electronic Resource
    Electronic Resource
    Effects on temperature on spontaneous and thyroxine-stimulated locomotor activity of Atlantic cod (1998)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 53 (1998), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Spontaneous locomotor activity of cod Gadus morhua maintained at 6° C tripled from February to May. In contrast, locomotor activity of cod held at 2° C was significantly lower than at 6° C (between 25 and 65% lower) and the seasonal increase was smaller. Plasma levels of both thyroxine (T4) and triiodothyronine (T3) did not differ between 2 and 6° C. T4 injection increased locomotor activity by 10% for both temperature regimes. These data indicate that low water temperature reduces locomotor activity associated with migration in cod and that thyroid hormones are not involved in this decrease. This study provides a possible mechanism through which cold waters may affects migration and distribution of cod via its Effects on locomotor activity and swimming speed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1998.tb00982.x
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  • 6
    Electronic Resource
    Electronic Resource
    Diel variation in feeding rate and prey composition of herring and mackerel in the southern Gulf of St Lawrence (2003)
    Oxford, UK : Blackwell Science Ltd
    Journal of fish biology 63 (2003), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Diel feeding patterns of herring Clupea harengus and mackerel Scomber scombrus in the southern Gulf of St Lawrence were examined based on samples obtained by midwater trawling between 19 and 26 June 2001. Within 3 h time periods, stomach contents tended to be more similar between fish from the same tow than between fish from different tows. Thus, in contrast to previous diet studies, which have used individual fish stomachs as independent observations, tow was used as the experimental unit in statistical analyses in this study. Diel patterns in stomach fullness were identified using generalized additive models. Two peaks in stomach fullness occurred for herring, one in the morning and the other in the evening. Mackerel showed an increase in feeding intensity throughout the day with a peak in mid-afternoon. The diel changes in stomach contents suggested rapid gastric evacuation rates for both species, especially for herring. The estimate of the instantaneous evacuation rate for herring was twice that for mackerel. Calanus copepods (mainly C. hyperboreus), fishes (mainly capelin Mallotus villosus) and euphausiids were the main prey found in the stomachs of both species. Calanus copepods dominated the diet of herring regardless of time period. They also dominated the diet of mackerel during the late afternoon, evening and night while fishes and euphausiids were dominant during the morning and early afternoon. These diel patterns emphasize the need for sampling throughout the day and night in order to estimate ration and diet composition for bioenergetic and ecosystem models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1095-8649.2003.00247.x
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  • 7
    Electronic Resource
    Electronic Resource
    Ontogenetic changes in temperature preference of Atlantic cod (2005)
    Oxford, UK; Malden, USA : Blackwell Science Ltd
    Journal of fish biology 66 (2005), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Final thermal preferendum (T) experiments were conducted in a horizontal thermal gradient tank from the beginning of August 2001 to mid-November 2001 using Atlantic cod Gadus morhua from 6·5 to 79·0 cm fork length (LF). The value of T varied significantly (P 〈 0·005) with LF(T = 7·23–0·054LF), with smaller (younger) fish choosing higher temperatures than larger (older) fish. The preferendum varied from 6·9° C for fish of 6·5 cm to 3·0° C for those of 79·0 cm. Experiments comparing fish positions in the gradient tank between thermal gradients of 0·5–11·0 and 4·5–14·5° C demonstrated that fish positions were determined by temperature selection instead of undesirable tank effects. This study is the first to demonstrate the effect of ontogeny on temperature preferences of a marine fish species.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.0022-1112.2005.00623.x
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  • 8
    Electronic Resource
    Electronic Resource
    Accumulation of PSP toxins in Atlantic mackerel: seasonal and ontogenetic variations (1997)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 50 (1997), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Atlantic mackerel Scomber scombrus are known to be lethal vectors of paralytic shellfish poisoning (PSP) toxins to predators. To elucidate dynamics of PSP toxin accumulation in this species, mackerel were sampled in the Gulf of St Lawrence from May to October 1993. Mackerel appear to retain toxins (saxitoxin, gonyautoxins 2 and 3) year-round. The toxin content of the liver, as determined by high performance liquid chromatography, increased significantly with fish age (r2=0.40) and length (r2=0.52), suggesting that mackerel progressively accumulate PSP toxins throughout their life. The toxin content of the liver also increased significantly during the summer feeding sojourn in the Gulf of St Lawrence. Comparison of profiles of saxitoxin derivatives indicated that zooplankton were the likely source of PSP toxins found in mackerel. The mean ± S.D toxin content was 17.4 ± 10.6 nmol liver−1 and the mean ± S.D. PSP toxicity was 112.4 ± 67.0 μg saxitoxin equivalents 100 g−1 liver wet weight (n=247).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1997.tb01648.x
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  • 9
    Electronic Resource
    Electronic Resource
    Ultrasonic study of quasi-one-dimensional magnetic system CsMnBr3
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 165-166 (1990), S. 171-172 
    Details
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4526(90)90477-C
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  • 10
    Electronic Resource
    Electronic Resource
    Ultrasonic study of quasi-one-dimensional magnetic system CsMnBr"3
    Amsterdam : Elsevier
    Physica B: Physics of Condensed Matter 165-166 (1990), S. 171-172 
    Details
    ISSN: 0921-4526
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/S0921-4526(90)80935-C
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