Experimentally increased temperature and hypoxia affect stability of social hierarchy and metabolism of the Amazonian cichlid Apistogramma agassizii

Kochhann, Daiani; Campos, Derek Felipe; Val, Adalberto Luı́s

doi:10.1016/j.cbpa.2015.09.006

Cited by 41 publications

(26 citation statements)

References 35 publications

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“…Our experiment clearly demonstrated the ability of environmental warming to increase aggression, a finding that has been documented in other ectotherms, including other fish 34 , amphibians 66 , and arachnids 67 . Currently, however, the proximal mechanism driving this linkage still remains uncertain.…”

Section: Discussionsupporting

confidence: 81%

Water warming increases aggression in a tropical fish

Kua

Hamilton

McLaughlin

et al. 2020

Sci Rep

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Our understanding of how projected climatic warming will influence the world’s biota remains largely speculative, owing to the many ways in which it can directly and indirectly affect individual phenotypes. Its impact is expected to be especially severe in the tropics, where organisms have evolved in more physically stable conditions relative to temperate ecosystems. Lake Tanganyika (eastern Africa) is one ecosystem experiencing rapid warming, yet our understanding of how its diverse assemblage of endemic species will respond is incomplete. Herein, we conducted a laboratory experiment to assess how anticipated future warming would affect the mirror-elicited aggressive behaviour of Julidochromis ornatus, a common endemic cichlid in Lake Tanganyika. Given linkages that have been established between temperature and individual behaviour in fish and other animals, we hypothesized that water warming would heighten average individual aggression. Our findings support this hypothesis, suggesting the potential for water warming to mediate behavioural phenotypic expression through negative effects associated with individual health (body condition). We ultimately discuss the implications of our findings for efforts aimed at understanding how continued climate warming will affect the ecology of Lake Tanganyika fishes and other tropical ectotherms.

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Section: Discussionsupporting

confidence: 81%

Water warming increases aggression in a tropical fish

Kua

Hamilton

McLaughlin

et al. 2020

Sci Rep

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“…The Amazon region is especially vulnerable to the effects of predicted climate change in the future, considering its great richness of species and characteristic seasonal environmental changes (IPCC, , ). Increased temperatures and carbon dioxide (CO 2 ) concentrations are constantly being registered all over the world and bring several concerns regarding the environment's dynamics and respective effects on plants and animals (Kochhann, Campos, & Val, ; Miller, Kroon, Metcalfe, & Munday, ; Oliveira & Val, ; Rosenzweig et al., ; Tseng et al., ). Likewise, reduced precipitation rates are expected in the Amazon region (IPCC, ), especially due to anthropogenic actions such as deforestation (Malhi et al., ), which directly affects this biome.…”

Section: Introductionmentioning

confidence: 99%

Predicted 2100 climate scenarios affects growth and skeletal development of tambaqui (Colossoma macropomum) larvae

Lopes

Araújo-Dairiki

Kojima

et al. 2018

Ecology and Evolution

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Climate changes driven by greenhouse gas emissions have been occurring in an accelerated degree, affecting environmental dynamics and living beings. Among all affected biomes, the Amazon is particularly subjected to adverse impacts, such as temperature rises and water acidification. This study aimed to evaluate the impacts of predicted climate change on initial growth and development of an important Amazonian food fish, the tambaqui. We analyzed growth performance, and monitored the initial osteogenic process and the emergence of skeletal anomalies, when larvae were exposed to three climate change scenarios: mild (B1, increase of 1.8°C, 200 ppm of CO2); moderate (A1B, 2.8°C, 400 ppm of CO2); and drastic (A2, 3.4°C, 850 ppm of CO2), in addition to a control room that simulated the current climatic conditions of a pristine tropical forest. The exposure to climate change scenarios (B1, A1B, and A2) resulted in low survival, especially for the animals exposed to A2, (24.7 ± 1.0%). Zootechnical performance under the B1 and A1B scenarios was higher when compared to current and A2, except for condition factor, which was higher in current (2.64 ± 0.09) and A1B (2.41 ± 0.14) scenarios. However, skeletal analysis revealed higher incidences of abnormalities in larvae exposed to A1B (34.82%) and A2 (39.91%) scenarios when compared to current (15.38%). Furthermore, the bone‐staining process revealed that after 16 days posthatch (7.8 ± 0.01 mm total length), skeletal structures were still cartilaginous, showing no mineralization in all scenarios. We concluded that tambaqui larvae are well‐adapted to high temperatures and may survive mild climate change. However, facing more severe climate conditions, its initial development may be compromised, resulting in high mortality rates and increased incidence of skeletal anomalies, giving evidence that global climate change will hamper tambaqui larvae growth and skeletal ontogeny.

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“…In artificial environments, some abiotic factors, such as elevated temperature (Volkoff & Rønnestad, 2020) and luminosity (Carvalho et al ., 2012; Ruchin, 2021), can affect fish behaviour and physiology, for instance increasing aggressive interactions among cichlids ( e.g ., Cichlasoma paranaense Kullander 1983, Brandão et al ., 2018; O. niloticus , Carvalho et al ., 2013; Agassiz's dwarf cichlid Apistogramma agassizii (Steindachner 1875), Kochhann et al ., 2015; Laetacara fulvipinnis Staeck & Schindler 2007, Sarmento et al ., 2017). As ectothermic animals, changes in water temperature can also affect fish metabolism.…”

Section: Social Behaviourmentioning

confidence: 99%

Understanding behaviour to improve the welfare of an ornamental fish

Brandão

Dorigão-Guimarães

Bolognesi

et al. 2021

Journal of Fish Biology

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Some common practices in aquaculture, ornamental trade and fish facilities may disturb the behavioural repertoire of fish and its natural adaptive value, reducing welfare and impairing fish production. Hence, it is necessary to understand fish behaviour, as well as the factors affecting it, to improve the quality of fish's life under artificial environment. Here, we reviewed the behaviour of the angelfish Pterophyllum scalare, an Amazonian cichlid used worldwide both as an ornamental fish and as a fish model in scientific research. We characterized social, reproductive and feeding behaviour, as well as the amazing cognitive ability of the angelfish. In addition, we reviewed the effects of environmental enrichment and suggested some important variables that need to be considered for rearing P. scalare. In this review, we show for the first time a synthesis on behaviour and a best practice overview to improve the welfare of angelfish as a target species. Nonetheless, most topics reviewed fit a broader set of fish species, particularly ornamental ones. This synthesis can therefore open a path for further behavioural research applied to the welfare of angelfish and bring insights to other fish species.

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Experimentally increased temperature and hypoxia affect stability of social hierarchy and metabolism of the Amazonian cichlid Apistogramma agassizii

Cited by 41 publications

References 35 publications

Water warming increases aggression in a tropical fish

Water warming increases aggression in a tropical fish

Predicted 2100 climate scenarios affects growth and skeletal development of tambaqui (Colossoma macropomum) larvae

Understanding behaviour to improve the welfare of an ornamental fish

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