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- Title
Description of the initial development and temporal distribution of Microphilypnus tapajosensis larvae and juveniles in a reservoir in the Eastern Amazon.
- Authors
de Oliveira, Cleidevania Cardoso; de Lima Suzuki, Maria Aparecida; de Oliveira, Lucas Silva; Maia Zacardi, Diego
- Abstract
This study describes the initial development of Microphilypnus tapajosensis larvae and juveniles using meristic, morphological and morphometric data and verifies their temporal distribution in a reservoir in the Eastern Amazon, analyzing the hypothesis that this environment is ideal for the development and growth of the species. The larvae and juveniles of M. tapajosensis presented common characteristics of the Eleotridae group, with their standard length varying from 3.0 mm to 8.9 mm, presence of dendritic chromatophores distributed in the ventral region close to the caudal fin and 28 total myomeres. During the initial development of the larvae, the morphology is the character that best differentiates M. tapajosensisfrom its congeners, followed by the number of rays from the pectoral fins in juvenile individuals. The occurrence of specimens in larval and juvenile stages throughout the sampling period indicates that M. tapajosensis has uninterrupted reproductive activity, demonstrating itself as an opportunistic species. Finally, the presence of individuals throughout all months, in all larval and juvenile stages, supports the hypothesis that the reservoir has conditions for the growth and development of M. tapajosensis, indicating that this environment is conducive to the maintenance and species renewal.
- Subjects
LARVAE; RESERVOIRS; PECTORAL fins; FISH larvae; CHROMATOPHORES; GOBIIDAE
- Publication
Revista Ciência e Natura, 2020, Vol 42, p1
- ISSN
0100-8307
- Publication type
Article
- DOI
10.5902/2179460x41542