We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Hotspots of annual fish along the Patos-Mirim Lagoon System and adjacent areas in Southern Brazil, with an evaluation of conservation priority for species and localities.
- Authors
Garcez, Daiana Kaster; Barbosa, Crislaine; de Oliveira Fernandes, Murilo; Volcan, Matheus Vieira; Robe, Lizandra Jaqueline
- Abstract
Rivulidae represents one of the most endangered taxa in Brazil. This family encompasses species known as annual or seasonal fish because they possess unique adaptations that enable their survival in seasonal ponds. Several Brazilian species of annual fish inhabit the Patos-Mirim Lagoon System (PMLS), which is considered a hotspot of these species. However, within this area, no strategic regions have yet been defined for in situ conservation of annual fish. Therefore, the aim of this study is to assist in the delimitation of micro-hotspots of endemism, sympatry and richness of annual fish along the PMLS, while assessing conservation priorities of evolutionary lineages and areas. For this purpose, distribution data were compiled for 42 species or evolutionary lineages that occur along 144 ponds located at the PMLS, which enabled to evaluate patterns of distribution of endemism, sympatry and richness. Moreover, measures of genetic diversity were obtained using sequences from one mitochondrial gene, and phylogenetic positioning was assessed using one mitochondrial and one nuclear marker. These values were considered in the context of the number of populations within and outside conservation units to evaluate conservation priority for 29 of these lineages (Wlineage) and 112 of these ponds (Wpond). Among the evaluated species and lineages, eight were detected as strictly endemic, and 55 of the evaluated ponds showed records of sympatry. The patterns of lineage richness showed a heterogeneous distribution of annual fish along the sampling area, with seven grids presenting records for four or more lineages. Interestingly, these are concentrated in four larger areas, located on the Southeast and on the Southwest margins of the Patos Lagoon and on the Southeast and Center-West Margins of the Mirim Lagoon, which present several ponds whose conservation is urging.
- Subjects
BRAZIL; WILDLIFE conservation; LAGOONS; FISH conservation; SYMPATRIC speciation; GEOGRAPHICAL distribution of fishes; FISH populations
- Publication
Biodiversity & Conservation, 2022, Vol 31, Issue 7, p1945
- ISSN
0960-3115
- Publication type
Article
- DOI
10.1007/s10531-022-02441-6