Estimativa do tamanho das fêmeas com ovos de Moina minuta Hansen, 1899 (Cladocera, Crustacea) no lago Amapá, Rio Branco, Estado do Acre, Brasil

Erlei Cassiano Keppeler; Elsa Rodrigues Hardy

doi:10.4025/actascibiolsci.v24i0.2278

Estimating the size of ovigerous females of Moina minuta (Cladocera - Crustacea) in Amapá Lake, Rio Branco, state of Acre, Brazil

Erlei Cassiano Keppeler CAUNESP-UNESP
Elsa Rodrigues Hardy INPA

DOI: https://doi.org/10.4025/actascibiolsci.v24i0.2278

Abstract

Moina minuta, a tropical species of Cladocera, was selected for the study of medium size at maturity and female egg production, due to its abundance and frequency in samples during low-water season in 1997 and high-water season in 1998, in Amapá Lake, Western Amazônia. The primiparous female had a size of 330 µm and 340 µm in low and high water, respectively. Moina individuals reached maximum size during high water (595µm). The medium size of the ovigerous females, in low water was 501 µm, producing an average of 4.41 eggs/female, while in high water, it was 533µm, with an average egg production of 4.84 eggs/female. The results, analyzed by the t test and Fischer’s F test, showed that there were no statistical differences in size among individuals (t= -10.69, F=1.20 and P>0.1227), nor among ovigerous females (t= -4.45, F=1.02 and P>0.8906), considering the two seasons.

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Author Biography

Erlei Cassiano Keppeler, CAUNESP-UNESP

Possui graduação em Biologia pela Universidade Federal do Acre (1994), aperfeiçoamento em Direito Ambiental e Políticas Públicas pela Universidade Federal do Pará (2006), Mestrado em Ecologia e Manejo de Recursos Naturais pela Universidade Federal do Acre (1999) e Doutorado em Aqüicultura pela Universidade Estadual Paulista Júlio de Mesquita Filho (2005). Atualmente é Professora Adjunto da Universidade Federal do Acre - Campus de Cruzeiro do Sul e credenciada no Programa de Mestrado em Ecologia e Manejo de Recursos Naturais em Rio Branco. Atua nas disciplinas de graduação Biologia Tecidual, Histologia, Biologia do Desenvolvimento e Limnologia. Quanto às disciplinas de Pós-Graduação é apta a ministrar as disciplinas de Gestão da biodiversidade aquática na Amazônia e Ecologia e sistemática do zooplâncton de águas continentais Currículo Lattes

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Published

2008-05-13

How to Cite

Keppeler, E. C., & Hardy, E. R. (2008). Estimating the size of ovigerous females of Moina minuta (Cladocera - Crustacea) in Amapá Lake, Rio Branco, state of Acre, Brazil. Acta Scientiarum. Biological Sciences, 24, 321-328. https://doi.org/10.4025/actascibiolsci.v24i0.2278

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Issue

Vol 24 (2002)

Section

Biology Sciences

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