Physiological effects of cymothoid parasitization in the fish host Pomatoschistus microps (Krøyer, 1838) under increasing ocean temperatures

Rui Cereja, Vanessa Mendonça, Marta Dias, Catarina Vinagre, Fátima Gil, Mário Diniz

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Currently, the effects of global warming on marine organisms are widely recognized by the scientific community. However, studies that relate the increase in ocean temperature with other stress factors are still scarce. The main aim of this study was to evaluate the effects of water temperature increase on the parasite Anilocra frontalis, the parasite's effects over its host Pomatoschistus microps. Therefore, P. microps were subjected to A. frontalis parasitization and both species were then exposed to two different temperatures, 22 °C (control) and 26 °C (experimental temperature). Critical Thermal Maxima (CTMax), antioxidant enzyme activity (glutathione-S-transferase, catalase and superoxide dismutase), Heat Shock Protein 70 and Lipid peroxidation (MDA content) were analysed for both species. Anilocra frontalis CTMax raised 1 °C between animals acclimated to 22 and acclimated at 26 °C (CTMax was 32 °C in animals acclimated to 22 °C and 33 °C in animals acclimated to 26 °C). Additionally, the parasites acclimated to higher temperatures showed higher release rates from their hosts. Although the parasitization did not influence P. microps’ condition, when combined with temperature it increased fish mortality rate and stress levels. The results show that temperature only influenced HSP70 values, presenting higher levels in fish acclimated to 26 °C.

Original languageEnglish
Pages (from-to)176-182
Number of pages7
JournalEcological Indicators
Volume95
DOIs
Publication statusPublished - 1 Dec 2018

Fingerprint

Pomatoschistus
Hypsithermal
parasitism
oceans
parasite
fish
heat tolerance
animal
temperature
parasites
heat shock
antioxidant
enzyme activity
global warming
animals
water temperature
lipid
glutathione transferase
mortality
protein

Keywords

  • Anilocra frontalis
  • CTmax
  • Fulton's K
  • Global warming
  • Oxidative stress
  • Parasitization
  • Pomatoschistus microps

Cite this

Cereja, Rui ; Mendonça, Vanessa ; Dias, Marta ; Vinagre, Catarina ; Gil, Fátima ; Diniz, Mário. / Physiological effects of cymothoid parasitization in the fish host Pomatoschistus microps (Krøyer, 1838) under increasing ocean temperatures. In: Ecological Indicators. 2018 ; Vol. 95. pp. 176-182.
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title = "Physiological effects of cymothoid parasitization in the fish host Pomatoschistus microps (Kr{\o}yer, 1838) under increasing ocean temperatures",
abstract = "Currently, the effects of global warming on marine organisms are widely recognized by the scientific community. However, studies that relate the increase in ocean temperature with other stress factors are still scarce. The main aim of this study was to evaluate the effects of water temperature increase on the parasite Anilocra frontalis, the parasite's effects over its host Pomatoschistus microps. Therefore, P. microps were subjected to A. frontalis parasitization and both species were then exposed to two different temperatures, 22 °C (control) and 26 °C (experimental temperature). Critical Thermal Maxima (CTMax), antioxidant enzyme activity (glutathione-S-transferase, catalase and superoxide dismutase), Heat Shock Protein 70 and Lipid peroxidation (MDA content) were analysed for both species. Anilocra frontalis CTMax raised 1 °C between animals acclimated to 22 and acclimated at 26 °C (CTMax was 32 °C in animals acclimated to 22 °C and 33 °C in animals acclimated to 26 °C). Additionally, the parasites acclimated to higher temperatures showed higher release rates from their hosts. Although the parasitization did not influence P. microps’ condition, when combined with temperature it increased fish mortality rate and stress levels. The results show that temperature only influenced HSP70 values, presenting higher levels in fish acclimated to 26 °C.",
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note = "Sem PDF conforme despacho. info:eu-repo/grantAgreement/FCT/5876/147258/PT# We are thankful to Miguel Cadete, aquarist at Aqu{\'a}rio Vasco da Gama (AVG), for the help with the aquarium systems. We acknowledge Hanna Davies, PhD student at Dom Luiz Institute, for revising the grammar of the text, and Carolina Madeira and Diana Madeira, PhD students at UCIBIO, for all the help with the protocols for the biomarkers assays. This work was funded by the Portuguese Funda{\cc}{\~a}o para a Ci{\^e}ncia e Tecnologia (FCT) through the projects PTDC/AAGREC/2139/201, PTDC/MAR-EST/2141/2012 granted to MARE, and UID/Multi/04378/2013 granted to UCIBIO. Rui Cereja, M. Dias and V. Mendon{\cc}a acknowledge the PhD research grants PD/BD/135064/2017, SFRH/BD/103047/2014 and SFRH/BD/109618/2015, respectively, and C. Vinagre acknowledges a FCT researcher position, all granted by the FCT. F{\'a}tima Gil acknowledge a Senior Position in AVG, granted by the Comiss{\~a}o Cultural da Marinha, from the Portuguese Navy. Appendix A",
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Physiological effects of cymothoid parasitization in the fish host Pomatoschistus microps (Krøyer, 1838) under increasing ocean temperatures. / Cereja, Rui; Mendonça, Vanessa; Dias, Marta; Vinagre, Catarina; Gil, Fátima; Diniz, Mário.

In: Ecological Indicators, Vol. 95, 01.12.2018, p. 176-182.

Research output: Contribution to journalArticle

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N2 - Currently, the effects of global warming on marine organisms are widely recognized by the scientific community. However, studies that relate the increase in ocean temperature with other stress factors are still scarce. The main aim of this study was to evaluate the effects of water temperature increase on the parasite Anilocra frontalis, the parasite's effects over its host Pomatoschistus microps. Therefore, P. microps were subjected to A. frontalis parasitization and both species were then exposed to two different temperatures, 22 °C (control) and 26 °C (experimental temperature). Critical Thermal Maxima (CTMax), antioxidant enzyme activity (glutathione-S-transferase, catalase and superoxide dismutase), Heat Shock Protein 70 and Lipid peroxidation (MDA content) were analysed for both species. Anilocra frontalis CTMax raised 1 °C between animals acclimated to 22 and acclimated at 26 °C (CTMax was 32 °C in animals acclimated to 22 °C and 33 °C in animals acclimated to 26 °C). Additionally, the parasites acclimated to higher temperatures showed higher release rates from their hosts. Although the parasitization did not influence P. microps’ condition, when combined with temperature it increased fish mortality rate and stress levels. The results show that temperature only influenced HSP70 values, presenting higher levels in fish acclimated to 26 °C.

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