Thermotolerance of soil nematodes Caenorhabditis briggsae AF16 and Caenorhabditis elegans N2 under experimental conditions

Kalinnikova, T. B.; Timoshenko, A. Kh.; Tarasov, O. Yu.; Gainutdinov, T. M.; Gainutdinov, M. Kh.

doi:10.1134/s1067413611050079

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Individual variability in behavioural responses to food stimuli appears to be highly species-specific. Höckelmann et al (2004) also observed a high interindividual variation in chemotaxis of the freshwater nematode Bursilla monhystera (Rhabditidae) in comparison to the less variable behaviour of Caenorhabditis elegans (Grewal and Wright, 1992;Kalinnikova et al, 2011) based on population assays. Some species show a strong tendency to aggregate in clusters at the agar surface, a common mechanistic interaction of nematode individuals (Doncaster and Webster, 1968;Croll, 1970), which can also result in an overall weak response to food (Moens et al, 1999).…”

Section: Temperature and Interspecific Competition Effects On Taxis To Foodmentioning

confidence: 96%

“…Data on total fecundity may lend further support to the idea that 20°C closely approximates the upper temperature tolerance limit of Gd1, in the sense that it was higher at the fluctuating temperature regime with short peaks of 20°C than at a constant temperature of 20°C, although this difference was not significant. Short (minutes to hours) daily exposures to sublethal temperatures may stimulate reproduction as a result of a plastic increase in thermal tolerance, a mechanism described for ectotherms as thermal hardening (Fischer and Karl, 2010;Kalinnikova et al, 2011). Such effects are likely species-specific as well as dependent on the precise temperature regime that is imposed.…”

Section: Temperature Effects On Species Fitness In the Absence Of Competitionmentioning

confidence: 99%

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Species coexistence of marine nematodes

Βαφειάδου¹

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Σύμφωνα με την κλασική οικολογική θεωρία της συνύπαρξης των ειδών, δύο λειτουργικά παρόμοια είδη δεν μπορούν να συνυπάρχουν λόγω του έντονου ανταγωνισμού∙ το ένα θα αποκλείσει το άλλο. Η διαφοροποίηση οικοθέσης είναι ο κύριος παράγοντας που ευννοεί τη συνύπαρξη των ειδών, καθώς τα ανταγωνιστικά είδη με παρόμοιες οικολογικές λειτουργίες μπορούν να διαφοροποιήσουν την οικολογική τους θέση, έτσι ώστε όσο μικρότερη είναι η αλληλεπικάλυψη των θέσεων τους, τόσο πιο σταθεροποιητικός είναι ο παράγοντας διαφοροποίσης. Εκτός από τους περιβαλλοντικούς παράγοντες που μπορούν να καθορίσουν μια εξειδίκευση οικοθέσης ενός είδους, οι αλληλεπιδράσεις των ειδών παίζουν επίσης ρόλο στην τροποποίηση της πραγματοποιηθείσας οικοθέσης και επηρεάζουν περαιτέρω τη δυναμική της συνύπαρξης. Η διαφοροποίηση των οικοθέσεων μπορεί να προκύψει από διάφορους μηχανισμούς που δεν αποκλείονται αμοιβαία. Διαφορετικές αποκρίσεις σε περιβαλλοντικούς παράγοντες, η διαφοροποίηση χρήσης πόρων και ο καταμερισμός μικροενδιαιτημάτων εξετάζονται σε αυτή τη διδακτορική διατριβή ως πιθανοί παράγοντες που οδηγούν σε διαφοροποίηση των οικοθέσεων των θαλάσσιων νηματωδών.

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Section: Temperature and Interspecific Competition Effects On Taxis To Foodmentioning

confidence: 96%

Section: Temperature Effects On Species Fitness In the Absence Of Competitionmentioning

confidence: 99%

Species coexistence of marine nematodes

Βαφειάδου¹

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Opposite effects of moderate heat stress and hyperthermia on cholinergic system of soil nematodes Caenorhabditis elegans and Caenorhabditis briggsae

Kalinnikova

Колсанова

Belova

et al. 2016

Journal of Thermal Biology

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Modulation of levamisole and nicotine toxicity in soil nematodes Caenorhabditis elegans and Caenorhabditis briggsae by moderate heat stress and ambient pH

Egorova

Колсанова

Belova

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

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The influence of moderate heat stress and changes in ambient pH in the range of 6.0 to 8.0 was investigated on two soil nematodes (Caenorhabditis elegans and Caenorhabditis briggsae). Rise of ambient pH from 6.0 to 8.0 increased the sensitivity of nematodes to agonists of nicotinic cholinoreceptors levamisole (30–120 μM) and nicotine (1–4 mM) by 1.5– 5 folds, but not to acetylcholine esterase inhibitor aldicarb (60–240 μM). An increase in temperature up to 30°C caused a steep rise in sensitivity of C. elegans and C. briggsae to levamisole. The influence of ambient pH on sensitivity of C. elegans and C. briggsae to levamisole at 30°C was similar to that at 22°C. Therefore, mechanisms of sensitization of C. elegans to levamisole toxicity by an increase in pH or by temperature rise are different. The most likely mechanism for the increase in levamisole and nicotine toxicity in C. elegans and C. briggsae by a rise in ambient pH is deprotonation of levamisole and nicotine. This study shows that it is desirable to conduct the evaluation of the biological activity of toxicants in nematodes in the pH range 6.0–8.0, and not at a single pH.

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Thermotolerance of soil nematodes Caenorhabditis briggsae AF16 and Caenorhabditis elegans N2 under experimental conditions

Cited by 3 publications

References 5 publications

Species coexistence of marine nematodes

Species coexistence of marine nematodes

Opposite effects of moderate heat stress and hyperthermia on cholinergic system of soil nematodes Caenorhabditis elegans and Caenorhabditis briggsae

Modulation of levamisole and nicotine toxicity in soil nematodes Caenorhabditis elegans and Caenorhabditis briggsae by moderate heat stress and ambient pH

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