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Biovolume of Naidinae and Pristininae (Clitellata: Oligochaeta) in neotropical environments

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Abstract

Mass or volume estimators using body surface areas can be useful for environmental quality biomonitoring programs. We propose models of biovolume estimate through biometric information of Aulophorus, Dero, Nais and Pristina. The samples were collected in 51 freshwater systems in the state of São Paulo, between 2004 and 2016. Specific dimensions for each genus of 1,814 total animals were measured and individual biovolume was calculated. The conversion model was performed by linear regression analysis between the biovolume and the specific dimensions, then transformed into a power function, established by allometric law. The biovolume of Aulophorus and Dero can be estimated by the diameter of segment four (DIV), by the equation Be = 0.775DIV4.387 (adjusted r2 = 0.84). For Nais species, the biovolume can be estimated by the diameter of segment seven (DVII), by the equation Be = 0.913DVII1.6 (adjusted r2 = 0.59). For Pristina, the biovolume can be estimate by the diameter of segment eight (DVIII), by the equation Be = 0.875DVIII2.11 (adjusted r2 = 0.69). The application of these models can help us better understand population structure, secondary production and flow of matter and energy in neotropical environments.

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Acknowledgements

We would like to thank fnancial support: FAPESP, process number 2018/12069-9 and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior – Brasil (CAPES). We are grateful to the Water Communities Sector of the Environmental Company of the State of São Paulo - CETESB, especially to the biologists Monica Luisa Kuhlmann and Hélio Rubens Victorino Imbimbo for the authorization of access to the Oligochaeta Collection of Monitoring Network.

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This work was supported by CAPES and FAPESP (process number: 2018/12069-9).

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DAG classified the animals, DAG, ON and GRG executed the experiments and participated on results discussion. DAG, ON and GRG performed the statistical analyses. DAG, ON, MFL, JJC, MRW and GRG performed analyses and result interpretation. DAG, ON, MFL, JJC, MRW and GRG conceived of the study and wrote the manuscript. All authors read and approved the final manuscript.

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Correspondence to Douglas Aparecido Girolli.

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Girolli, D.A., Nardy, O., Futenma de Lima, M. et al. Biovolume of Naidinae and Pristininae (Clitellata: Oligochaeta) in neotropical environments. Biologia 78, 1027–1034 (2023). https://doi.org/10.1007/s11756-022-01304-3

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  • DOI: https://doi.org/10.1007/s11756-022-01304-3

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