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991.
Rajak Jai Kishan Khandelwal Nitin Behera Mahima Prasad Tiwari Ekta Singh Nisha Ganie Zahid Ahmad Darbha Gopala Krishna Abdolahpur Monikh Fazel Schäfer Thorsten 《Environmental science and pollution research international》2021,28(31):41760-41771
Environmental Science and Pollution Research - Chromite ore processing residues (COPR) are real environmental threats, leading to CrO42-, i.e., Cr (VI) leaching into groundwater. It is of serious... 相似文献
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Threat-sensitive decision-making might be changed in response to a parasitic infection that impairs future reproduction. Infected
animals should take more risk to gain energy to speed up their growth to achieve early reproduction and/or to strengthen their
immune response. To avoid correlational evidence, we experimentally infected and sham-infected randomly selected immature
three-spined sticklebacks with the cestode Schistocephalus solidus. For 7 weeks we determined the threat-sensitive foraging decisions and growth of individual sticklebacks in the presence
of a live pike (Esox lucius). The experimenters were blind with respect to the infection status of the fish. In contrast to previous studies, our recently
infected fish should have been almost unconstrained by the parasite and thus have been able to adopt an appropriate life history
strategy. We found a strong predator effect for both infected and uninfected fish: the sticklebacks’ risk-sensitive foraging
strategy resulted in significantly reduced growth under predation risk. Infected fish did not grow significantly faster under
predation risk than uninfected fish. Since infected fish consumed much less prey in the presence of the predator than did
infected fish in its absence, they obviously did not use the opportunity to maximize their growth rate to reach reproduction
before the parasite impairs it.
Received: 21 June 1999 / Revised: 27 November 1999 / Accepted: 5 September 2000 相似文献
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Olle Ericsson Tarja Ahola Fredrik Dahl Filip Karlsson Fredrik Persson Olof Karlberg Fredrik Roos Ida Alftrén Björn Andersson Emelie Barkenäs Ani Boghos Birgit Brandner Jenny Dahlberg Per-Ola Forsgren Niels Francois Anna Gousseva Faizan Hakamali Åsa Janfalk-Carlsson Henrik Johansson Johanna Lundgren Atefeh Mohsenchian Linus Olausson Simon Olofsson Atif Qureshi Björn Skarpås Peter Svahn Anna Sävneby Eva Åström Anna Sahlberg Aino Fianu-Jonasson Jérémie Gautier Jean-Marc Costa Bo Jacobsson Kypros Nicolaides 《黑龙江环境通报》2019,39(11):1011-1015
997.
2 H). As a consequence, the former proteolytic enzyme gained peroxidase activity and catalyzed the selective reduction of hydroperoxides.
Due to the identical binding sites of the semisynthetic peroxidase and the protease, the substrate selectivity of seleno-subtilisin
was predictable in view of the well-known selectivity of subtilisin. 相似文献
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Enzymatic activity and quantity of the protease trypsin were measured in individual herring larvae (Clupea harengus L.). The enzymatic activity assay was done using a fluorescence technique, and a radioimmunoassay was used for quantification of trypsin. The results are compared and the differences between the techniques discussed. Both methods gave similar results, as high or low values in trypsin quantity were reflected in high or low values of tryptic activity. Quantity and activity were linearly and positively correlated, but small differences between methods were found at the lowest detection limits. Both techniques reflect high variability between individual larvae. 相似文献