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Cheron M, Kato A, Ropert-Coudert Y, Meyer X, MacIntosh AJJ, Raoelison L, Brischoux F. Exposure, but not timing of exposure, to a sulfonylurea herbicide alters larval development and behaviour in an amphibian species. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2023; 254:106355. [PMID: 36446167 DOI: 10.1016/j.aquatox.2022.106355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Revised: 11/10/2022] [Accepted: 11/13/2022] [Indexed: 06/16/2023]
Abstract
Environmental contamination is one of the major causes of biodiversity loss. Wetlands are particularly susceptible to contamination and species inhabiting these habitats are subjected to pollutants during sensitive phases of their development. In this study, tadpoles of a widespread amphibian, the spined toad (Bufo spinosus), were exposed to environmental concentrations of nicosulfuron (0 μg/L; 0.15 ± 0.05 μg/L and 0.83 ± 0.04 μg/L), a sulfonylurea herbicide, during different phases of development. Tadpoles were exposed during embryonic (12.98 ± 0.90 days) or larval development (93.74± 0.85 days), or throughout both phases, and we quantified development duration, morphological traits and behavioural features as responses to exposure. Developing tadpoles exposed to nicosulfuron were larger, but with smaller body, and had shorter but wider tail muscles. They were also more active and swam faster than control tadpoles and showed diverging patterns of behavioural complexity. We showed that higher concentrations had greater effects on individuals than lower concentrations, but the timing of nicosulfuron exposure did not influence the metrics studied: Exposure to nicosulfuron triggered similar effects irrespective of the developmental stages at which exposure occurred. These results further indicate that transient exposure (e.g., during embryonic development) can induce long-lasting effects throughout larval development to metamorphosis. Our study confirms that contaminants at environmental concentrations can have strong consequences on non-target organisms. Our results emphasize the need for regulation agencies and policy makers to consider sublethal concentrations of sulfonulyrea herbicides, such as nicosulfuron, as a minimum threshold in their recommendations.
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Affiliation(s)
- Marion Cheron
- Centre d'Études Biologiques de Chizé, CEBC UMR 7372, CNRS-La Rochelle Université, Villiers-en-Bois 79360, France.
| | - Akiko Kato
- Centre d'Études Biologiques de Chizé, CEBC UMR 7372, CNRS-La Rochelle Université, Villiers-en-Bois 79360, France
| | - Yan Ropert-Coudert
- Centre d'Études Biologiques de Chizé, CEBC UMR 7372, CNRS-La Rochelle Université, Villiers-en-Bois 79360, France
| | - Xavier Meyer
- European Science Foundation, 1 quai Lezay-Marnesia, Strasbourg 67080, France
| | - Andrew J J MacIntosh
- Kyoto University Primate Research Institute, 41-2 Kanrin, Inuyama 484-8506, Japan
| | - Léa Raoelison
- Centre d'Études Biologiques de Chizé, CEBC UMR 7372, CNRS-La Rochelle Université, Villiers-en-Bois 79360, France
| | - François Brischoux
- Centre d'Études Biologiques de Chizé, CEBC UMR 7372, CNRS-La Rochelle Université, Villiers-en-Bois 79360, France
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Gonçalves AM, Santana CC, Santos LFJD, Colosio RR, Balbuena TS, Pizauro JM. Identification and characterization of acid and alkaline phosphatases and protein phosphatases in L. catesbeianus tail during metamorphosis. Biologia (Bratisl) 2021. [DOI: 10.1007/s11756-021-00877-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Colosio RR, Santos LFJ, Gonçalves AM, Santana CC, Pavarina GC, Pizauro JM. Enzymatic activity of bone markers on Lithobates catesbeianus (Shaw, 1802) growth during the ossification process. BRAZ J BIOL 2021; 84:e251970. [PMID: 34705954 DOI: 10.1590/1519-6984.251970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 07/15/2021] [Indexed: 11/22/2022] Open
Abstract
In order to better understand the ossification processes in anurans our study was carried out on tadpoles and adults of Lithobates catesbeianus. In this sense, we characterized the kinetic properties of alkaline phosphatase with p-nitrophenylphosphatase (pNPP) and pyrophosphate (PPi) and evaluated the activities of tartrate-resistant acid phosphatase and acid phosphatase. The enzyme extracts were obtained from tadpoles and adult femurs, which were divided into epiphysis and diaphysis. After homogenization, the samples were submitted to differential centrifugation to obtain cell membranes and, further, to phospholipase C (PIPLC) treatment, to remove membrane-bound proteins anchored by phosphatidylinositol. The average of specific activity for pNPP hydrolysis (at pH 10.5) by alkaline phosphatase released by phosphatidylinositol-specific phospholipase C (PIPLC) from Bacillus cereus among different bone regions at different animal ages was 1,142.57 U.mg-1, while for PPi hydrolysis (at pH 8.0), it was 1,433.82 U.mg-1. Among the compounds tested for enzymatic activity, the one that influenced the most was EDTA, with approximately 67% of inhibition for pNPPase activity and 77% for PPase activity. In the case of kinetic parameters, the enzyme showed a "Michaelian" behavior for pNPP and PPi hydrolysis. The Km value was around 0.6mM for pNPPase activity and ranged from 0.01 to 0.11mM for PPase activity, indicating that the enzyme has a higher affinity for this substrate. The study of pNPP and PPi hydrolysis by the enzyme revealed that the optimum pH of actuation for pNPP was 10.5, while for PPi, which is considered the true substrate of alkaline phosphatase, was 8.0, close to the physiological value. The results show that regardless of the ossification type that occurs, the same enzyme or isoenzymes act on the different bone regions and different life stages of anurans. The similarity of the results of studies with other vertebrates shows that anurans can be considered excellent animal models for the study of biological calcification.
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Affiliation(s)
- R R Colosio
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Jaboticabal, SP, Brasil.,Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Química, Departamento de Bioquímica e Química Orgânica, Araraquara, SP, Brasil
| | - L F J Santos
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Jaboticabal, SP, Brasil.,Faculdade de Tecnologia - FATEC, Ribeirão Preto, SP, Brasil
| | - A M Gonçalves
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Química, Departamento de Bioquímica e Química Orgânica, Araraquara, SP, Brasil.,Universidade de Araraquara - UNIARA, Departamento de Ciências Biológicas e de Saúde, Araraquara, SP, Brasil
| | - C C Santana
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Jaboticabal, SP, Brasil.,Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Química, Departamento de Bioquímica e Química Orgânica, Araraquara, SP, Brasil
| | - G C Pavarina
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Jaboticabal, SP, Brasil
| | - J M Pizauro
- Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Faculdade de Ciências Agrárias e Veterinárias, Departamento de Tecnologia, Jaboticabal, SP, Brasil.,Universidade Estadual Paulista "Júlio de Mesquita Filho" - UNESP, Instituto de Química, Departamento de Bioquímica e Química Orgânica, Araraquara, SP, Brasil
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Cheron M, Raoelison L, Kato A, Ropert-Coudert Y, Meyer X, MacIntosh AJJ, Brischoux F. Ontogenetic changes in activity, locomotion and behavioural complexity in tadpoles. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Metamorphosis is a widespread developmental process that involves considerable changes in morphology, habitat use, ecology and behaviour between early developmental (larval) stages and adult forms. Among amphibians, anuran larvae (tadpoles) undergo massive morphological and ecological changes during their development, with early stages characterized by somatic growth, whereas more conspicuous changes (i.e. metamorphosis) occur later during development. In this study, we examined how locomotor and behavioural traits covary with morphology (body size) and metamorphosis (hindlimb and forelimb development) across developmental stages in spined toad (Bufo spinosus) tadpoles. As expected, we found that locomotion and behaviour undergo significant changes during tadpole development. These changes are curvilinear across developmental stages, with a phase of increasing activity and locomotion followed by a phase of stasis and/or reduction in locomotion and behavioural complexity. All the metrics we investigated indicate that the peak of activity and associated behaviour is situated at a pivotal stage when somatic growth decreases and significant morphological changes occur (i.e. hindlimb growth). Future studies that aim to investigate determinants of locomotion should include developmental stages as covariates in order to assess whether the sensitivity of locomotion to environmental variables changes across developmental stages.
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Affiliation(s)
- Marion Cheron
- Centre d’Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, Villiers-en-Bois, France
| | - Léa Raoelison
- Centre d’Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, Villiers-en-Bois, France
| | - Akiko Kato
- Centre d’Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, Villiers-en-Bois, France
| | - Yan Ropert-Coudert
- Centre d’Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, Villiers-en-Bois, France
| | - Xavier Meyer
- European Science Foundation, 1 quai Lezay-Marnesia, Strasbourg, France
| | | | - François Brischoux
- Centre d’Etudes Biologiques de Chizé, CEBC UMR 7372 CNRS-La Rochelle Université, Villiers-en-Bois, France
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Nakaghi LSO, Oliveira-Bahia VRL, De Stefáni MV, Pizauro JM, Khan KU, Macente BI, Mansano CFM. Ontogenetic development of the oral apparatus and oropharyngeal cavity in bullfrog tadpoles (Lithobates catesbeianus, Shaw 1802). Arch Oral Biol 2019; 100:69-74. [PMID: 30807873 DOI: 10.1016/j.archoralbio.2019.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 01/31/2019] [Accepted: 02/18/2019] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The present study aimed to describe the morphology of oral apparatus and oral cavity of bullfrog tadpoles during their development and metamorphosis. DESIGN The oral apparatus and oropharyngeal cavity of tadpoles from hatching up to metamorphosis stage was dissected for further analysis. These structures were fixed in Karnovsky solution, afterwards in osmium tetroxide and metalized in palladium gold and electron-micrographed using the scanning electron microscope. RESULTS The development of oral apparatus started with the formation and keratinization of the jaw sheaths and labial teeth followed by the formation of marginal and sub-marginal papillae. Degeneration of oral apparatus and formation of mouth was observed during metamorphosis. From stage-42 (metamorphic climax) to stage-43, the jaw sheath and labial tooth rows were disappeared progressively while the size and number of labial papillae were decreased. At stage-44, mouth formation started with the development of anterior and posterior labium though the labial papillae were still present. At stage-45 and 46, mouth was already formed, being very similar to the adult and characterized by the progressive increase in size. CONCLUSION The sequence of events that happen during the development of oral apparatus of Lithobates catesbeianus Shaw, 1802 tadpoles follows the same pattern as occur in other anuran species but metamorphic atrophy of the oral apparatus follows the sequence of morphogenesis.
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Affiliation(s)
- Laura Satiko Okada Nakaghi
- Department of Animal Morphology and Physiology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Via de Acesso Paulo Donato Castellane s/n, 14884900, Jaboticabal, SP, Brazil.
| | | | - Marta Verardino De Stefáni
- Aquaculture Center, São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900, Jaboticabal, SP, Brazil.
| | - João Martins Pizauro
- Department of Technology, Faculty of Agricultural and Veterinary Sciences, São Paulo State University (UNESP), Via de Acesso Paulo Donato Castellane s/n, 14884900, Jaboticabal, SP, Brazil.
| | - Kifayat Ullah Khan
- Aquaculture Center, São Paulo State University (Unesp), Via de Acesso Prof. Paulo Donato Castellane s/n, 14884-900, Jaboticabal, SP, Brazil.
| | - Beatrice Ingrid Macente
- Brazil University (Univ. Brasil), Campus Fernandópolis - Est. Projetada F-1, s/n - Fazenda Santa Rita, 15600-000, Fernandópolis, SP, Brazil.
| | - Cleber Fernando Menegasso Mansano
- Brazil University (Univ. Brasil), Campus Fernandópolis - Est. Projetada F-1, s/n - Fazenda Santa Rita, 15600-000, Fernandópolis, SP, Brazil.
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Santos LFJD, de Oliveira-Bahia VRL, Nakaghi LSO, De Stefani MV, Gonçalves AM, Junior JMP. Ontogeny of the Digestive Enzymes of Tadpoles ofLithobates catesbeianus. COPEIA 2016. [DOI: 10.1643/cg-16-432] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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