The behavioural basis of a species replacement: differential aggresssion and predation between the introduced Gammarus pulex and the native G. duebeni celticus (Amphipoda)

1995 ◽  
Vol 37 (6) ◽  
pp. 393-398 ◽  
Author(s):  
J. T. A. Dick ◽  
Robert W. Elwood ◽  
W. Ian Montgomery
Keyword(s):  
Gammarus Pulex ◽  
Species Replacement

The Acute Toxicity Of Diazinon To The Freshwater Shrimp Gammarus Pulex

2018 ◽  
pp. 1
Author(s):  
سالم طارق الوحيشي ◽  
ألان هارقريفس ◽  
كريس لويد ميلس ◽  
وسام فرج عبدالعاطى محمد
Keyword(s):  
Acute Toxicity ◽  
Gammarus Pulex ◽  
Freshwater Shrimp

Acute toxicity of organic chemicals to Gammarus pulex correlates with sensitivity of Daphnia magna across most modes of action

2011 ◽  
Vol 103 (1-2) ◽  
pp. 38-45 ◽  
Author(s):  
Roman Ashauer ◽  
Anita Hintermeister ◽  
Eva Potthoff ◽  
Beate I. Escher
Keyword(s):  
Acute Toxicity ◽  
Daphnia Magna ◽  
Gammarus Pulex ◽  
Organic Chemicals ◽  
Modes Of Action

scholarly journals Moult-related changes in the integument, midgut, and digestive gland in the freshwater amphipod Gammarus pulex

2014 ◽  
Vol 34 (5) ◽  
pp. 539-551 ◽  
Author(s):  
Mélissa Trevisan ◽  
Philippe Compère ◽  
Jean-Pierre Thomé ◽  
Nicole Decloux ◽  
Delphine Leroy
Keyword(s):  
Digestive Gland ◽  
Gammarus Pulex

scholarly journals Significance of Xenobiotic Metabolism for Bioaccumulation Kinetics of Organic Chemicals in Gammarus pulex

2012 ◽  
Vol 46 (6) ◽  
pp. 3498-3508 ◽  
Author(s):  
Roman Ashauer ◽  
Anita Hintermeister ◽  
Isabel O’Connor ◽  
Maline Elumelu ◽  
Juliane Hollender ◽  
...  
Keyword(s):  
Xenobiotic Metabolism ◽  
Gammarus Pulex ◽  
Organic Chemicals ◽  
Kinetics Of

The effect of the acanthocephalan Pomphorhynchus laevis upon the respiration of its intermediate host, Gammarus pulex

Parasitology ◽  
1974 ◽  
Vol 68 (2) ◽  
pp. 271-284 ◽  
Author(s):  
A. E. Rumpus ◽  
C. R. Kennedy
Keyword(s):  
Oxygen Consumption ◽  
Oxygen Uptake ◽  
Host Population ◽  
Gammarus Pulex ◽  
Multiple Infections ◽  
Pomphorhynchus Laevis ◽  
Respiration Rates ◽  
Physiological Processes ◽  
Stage Of Development ◽  
Host Parasite

The respiration rates of individual Gammarus pulex infected by larval Pomphorhynchus laevis were investigated with particular reference to the stage of development of the host and parasite and to the water temperature. At 20°C the oxygen consumption of Gammarus of all sizes was reduced by an average of 19·3 % by the presence of cystacanths of the parasite, but was unaffected by the presence of acanthellae. It is considered that the small size of this larval stage, in relation to that of its host, is responsible for the failure to detect an effect. Multiple infections did not exert any greater effect upon host respiration than single cystacanths, nor did it appear that the parasite had different effects upon hosts of different sexes. At 10°C no significant differences were observed between the respiration rates of infected and uninfected gammarids. The parasite was probably still depressing the host respiration rate at this temperature, but the oxygen uptake of G. pulex is so low that the differences between infected and uninfected individuals were too small to be detected. The parasite has a direct effect upon the physiological processes of the host, but neither the mechanism of this nor the reasons for the different effects found in different host-parasite systems are yet understood. Despite the pronounced effect of P. laevis on respiration of individual hosts, its effect upon the oxygen consumption of a natural host population is small since only a small proportion of the population carries infections and water temperatures remain below 10°C for over half the year.

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