Results 11 to 20 of about 1,874 (205)
Observation of museum specimens of the genus Pacifastacus Bott, 1950 (Decapoda: Astacidae)
Until recently, three subspecies had traditionally been recognized in the astacid species Pacifastacus leniusculus (Dana, 1852): Pacifastacus leniusculus leniusculus, Pacifastacus leniusculus klamathensis (Stimpson, 1857), and Pacifastacus leniusculus ...
Tadashi Kawai
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Pacifastacus leniusculus [PDF]
Pacifastacus leniusculus (Dana, 1852) (Fig. 30D–F, L) Astacus leniusculus Dana, 1852: 524. — Stimpson 1857b: 493. — Hagen 1870: 94. — Holmes 1900: 166. — Bonnot 1930: 212, figs. 65–67. Pacifastacus leniusculus. — Riegel 1959: 39, fig. 1F–H, fig. 3A, 6. — Miller & Van Hyning 1970:77, figs. 1, 2. — Abrahamsson & Goldman 1970: 83.
Sanders, H., Mills, D.
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Signal crayfish Pacifastacus leniusculus (Dana, 1852) Signal crayfish were introduced into Latvia from Lithuania in 1983 and 1984 and released into Primmas Lake in 1983-1985 (Mjasischev 1991). They were raised in a fish farm on the Gauja’s tributary, the Brasla, from which it entered this river.
Aleksejevs, Ēriks, Birzaks, Jānis
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This study estimated the rate of growth of Pacifastacus leniusculus using the sizefrequency data analysis in Lake Pobłędzie NE Poland. A sample of 1,342 individuals (645 males and 697 females) was collected with baited traps in late September 2002.
ŠMIETANA P., KRZYWOSZ T.
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In Bavarian freshwater systems, the stone crayfish Austropotamobius torrentium is still present in many headwaters of Danubian tributaries. Since the 1960s an alien species, the signal crayfish Pacifastacus leniusculus, was introduced several times ...
HUBER M. G.J., SCHUBART C. D.
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Transglutaminase activity in the hematopoietic tissue of a crustacean, Pacifastacus leniusculus, importance in hemocyte homeostasis. [PDF]
Abstract Background Transglutaminases (TGases) form a group of enzymes that have many different substrates and among the most well known are fibrin for Factor XIIIa and the clotting protein in crustaceans. We also found that TGase is an abundant protein in the hematopoietic tissue (Hpt) cells of crayfish and hence we ...
Lin X, Söderhäll K, Söderhäll I.
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Changes in resistance to mechanical pressure during embryogenesis were studied in the signal crayfish (Pacifastacus leniusculus Dana). A constant increase in egg size (volume and surface area) was observed to take place throughout the embryonic ...
WINNICKI A. +3 more
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In recent years, European countries have intensified efforts to control or limit the spread of invasive freshwater crayfish and the crayfish plague pathogen Aphanomyces astaci, while working to conserve native species such as the noble crayfish (Astacus ...
Patrik Bohman +39 more
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Des recherches ont été effectuées concernant la zooépibiose de l’écrevisse signal (Pacifastacus leniusculus, D.), provenant d’un centre d’astaciculture espagnol, au cours de la période 1997-1998.
CUELLAR M. C. +2 more
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Intensive removal of signal crayfish (Pacifastacus leniusculus) from rivers increases numbers and taxon richness of macroinvertebrate species [PDF]
Tom P Moorhouse +2 more
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