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Wyszukujesz frazę "Neomysis integer" wg kryterium: Temat

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    Wyświetlanie 1-3 z 3
    Tytuł:
    Biological characterization of neomysis integer (Leach, 1815) from the Pomeranian Bay in 2006–2007
    Autorzy:
    Grzeszczyk-Kowalska, A.
    Chojnacki, J.C.
    Raczyńska, M.
    Raczyński, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/124649.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Mysidacea
    Neomysis integer
    Pomeranian Bay
    Baltic Sea
    Opis:
    The aim of the study was to determine the biological characters typical of Neomysis integer, to investigate and update issues of its biology, ecology, and distribution in the southwestern Baltic Sea, and to compare biological properties of N. integer collected during eight study seasons in 2006–2007 in the region from Świnoujście to Darłowo. No link was established between N. integer size and sample collection site. The population attained sizes within the range of 2.64 to 18.84 mm. The size at which females achieved sexual maturity varied seasonally. A mean of 34 eggs was noted in the marsupium. The mean wet weight of N. integer was 0.011 g. Three generations were confirmed at most of the study sites.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 40-52
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparative morphological analysis of neomysis integer (leach, 1815) in 2006–2007 period
    Autorzy:
    Grzeszczyk-Kowalska, A
    Chojnacki, J C
    Raczyńska, M
    Raczyński, M
    Powiązania:
    https://bibliotekanauki.pl/articles/123737.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    Neomysis integer
    Pomeranian Bay
    Baltic Sea
    morphometry
    Opis:
    This paper presents the results of a detailed comparative description of the morphological characters of N. integer obtained during eight research seasons in 2006–2007 period from the region stretching from Świnoujście to Darłowo. An attempt was made to assess the suitability of the studied characters for establishing to which populations individuals belong, to identify secondary sex traits and to detect differences in the body shape of these shrimp-like crustaceans. Most of the measurable characters in all of the samples discrimination analysis indicated the characters which differentiated the compared groups were telson length, lower abdomen width, exopodite uropod length, cephalothorax width below the carapace, cephalothorax width above the carapace and the height of fourth and fifth abdominal segment connections.
    Źródło:
    Journal of Ecological Engineering; 2013, 14, 3; 31-43
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of methods for nocturnal sampling of predatory zooplankters in shallow waters
    Autorzy:
    Linkowski, T.B.
    Kornijow, R.
    Kapowicz, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2078998.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    plankton
    zooplankton
    predatory species
    Neomysis integer
    Leptodora kindtii
    Cercopagis pengoi
    shallow water
    Vistula Lagoon
    Opis:
    The aim of the study was to assess the suitability of a plankton net (diameter of 60 cm, mesh size of 500 μm) and a column sampler (length of 200 cm, diameter of 5 cm) for estimating the density of zooplankton predatory species (Neomysis integer, Leptodora kindtii, Cercopagis pengoi). Nocturnal sampling was performed once a month (May—November 2018) in the Vistula Lagoon (southern Baltic) in the range depth of 1.3—3.6 m. Statistical analysis indicated no significant differences between the N. integer and C. pengoi density estimated by the two sampling gears. In the case of L. kindtii, the mean density obtained by the column sampler was higher when analyzing all samples together and/or deep-water samples only (p < 0.02). However, no such differences were found at shallow stations i.e. up to ca. 2 m in depth. It was assumed that the more suitable sampling equipment for estimating zooplankton abundance in a shallow, well-mixed transitional (brackish) basin is the column sampler. This type of gear, so far used mainly for sampling of micro and mesozooplankton, allows the simultaneous nocturnal collection of the entire zooplankton size spectrum, including representatives of large predatory species. The suitability of light traps for qualitative studies of zooplankton species responding positively to light under the high turbidity of the Vistula Lagoon was also investigated. The traps proved to be most useful for N. integer (100% frequency), and much less for L. kindtii (46.2%) and C. pengoi (27.3%).
    Źródło:
    Oceanologia; 2021, 63, 1; 71-79
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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