Sandra Ludwig

ORCID: 0000-0003-0550-901X
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About
Contact & Profiles
Research Areas
  • Aquatic Invertebrate Ecology and Behavior
  • Genetic diversity and population structure
  • Turtle Biology and Conservation
  • Marine Ecology and Invasive Species
  • Genomics and Phylogenetic Studies
  • Parasite Biology and Host Interactions
  • Mollusks and Parasites Studies
  • Fish biology, ecology, and behavior
  • Fish Biology and Ecology Studies
  • Identification and Quantification in Food
  • Fish Ecology and Management Studies
  • Wildlife Ecology and Conservation
  • Marine Biology and Ecology Research
  • Amphibian and Reptile Biology
  • Bird parasitology and diseases
  • Aquaculture Nutrition and Growth
  • Marine Bivalve and Aquaculture Studies
  • Helminth infection and control
  • Avian ecology and behavior
  • Insect Resistance and Genetics
  • Primate Behavior and Ecology
  • Calcium Carbonate Crystallization and Inhibition
  • Animal Behavior and Reproduction
  • Ecology and Vegetation Dynamics Studies
  • Chromosomal and Genetic Variations

Universidade Federal do Paraná
2011-2025

Universidade Federal do Espírito Santo
2022-2024

Universidade Federal de Minas Gerais
2017-2023

Mississippi State University
2008

University of Florida
2008

Recent studies have argued that changes in fire regimes the 21st century are posing a major threat to global biodiversity. In this scenario, incorporating species’ physiological, ecological, and evolutionary traits with their local exposure might facilitate accurate identification of species most at risk from fire. Here, we developed framework for identifying animal vulnerable extinction fire-induced stress Brazilian savanna. The proposed addresses vulnerability two components: (1) exposure,...

10.3390/fire6060242 article EN cc-by Fire 2023-06-18

Genetic diversity and population studies are essential for conservation wildlife management programs. However, monitoring requires the analysis of multiple loci from many samples. These processes can be laborious expensive. The choice microsatellites PCR calibration genotyping particularly daunting. Here we optimized a low-cost method using microsatellite simultaneous up to 384 samples next-generation sequencing (NGS). We designed primers with adapters combinatorial barcoding amplicon...

10.3389/fgene.2018.00073 article EN cc-by Frontiers in Genetics 2018-03-09

The production of oysters in Guaratuba Bay, the state Paraná, Brazil, is still a mixed activity mariculture and extractivism. sustainable development this requires monitoring environmental, genetic, reproductive, zootechnical variables. This study evaluated importance these variables on Crassostrea oyster production. Data were obtained between September 2009 February 2011 from six evaluations: water quality, larvae plankton, capture spat by artificial collectors, molecular identification...

10.1080/07924259.2012.747449 article EN Invertebrate Reproduction & Development 2012-12-03

Abstract Fish stocking programs have been implemented to mitigate the blockage of original riverbeds by construction hydropower dams, which affects natural migration fish populations. However, this method raises concerns regarding genetic rescue populations migratory species. We investigated spatial distribution properties, such as diversity, population structure, and gene flow (migration), Neotropical Prochilodus costatus in Três Marias dam São Francisco River basin, Brazil, examined...

10.1002/ece3.6231 article EN cc-by Ecology and Evolution 2020-09-16

Stemming from a recent freshwater invasives conference, Caffrey et al. (2014) identified 'the top 20 issues' that relate to invasive alien species (IAS) management in Europe.With view complement and balance the issues highlighted their account, we offer six important additions marine environment.These are: preventive measures, concerns of loss taxonomic expertise identity, gaps knowledge certain taxa regions, inconsistencies terminology, need for validation data importance concentrating on...

10.3391/mbi.2014.5.2.07 article EN cc-by Management of Biological Invasions 2014-06-01

Among oysters, species of Crassostrea (Sacco, 1897) are the most attractive to aquaculture. In Brazil, genus is represented by C. rhizophorae (Guilding, 1828) and brasiliana (Lamarck, 1819). Because maturation breeding technology not well developed for these species, aquaculturists need a reliable method decide correct time place spat collectors in field, identify both which morphologically similar. this study specific Multiplex PCR protocol was developed, using one pair universal primers...

10.1590/s1984-46702011000400002 article EN cc-by Zoologia (Curitiba) 2011-08-01

Complete mitochondrial sequences can be rapidly obtained and are widely available, providing a great source of species information allowing for the discovery new specific molecular markers. However, some taxonomic groups, traditional approaches delimitation impaired by low genetic distance values. In these cases, other species-level markers used. For Prochilodus, which includes important neotropical fish species, usually results in poor phylogenetic resolution when using COI/cytB genes as...

10.1080/24701394.2020.1748609 article EN Mitochondrial DNA Part A 2020-04-21

Sporophila maximiliani, commonly known as Great-billed Seed-Finch or 'bicudo', is a trafficked bird in Brazil due to the species' beauty and singing, which appreciated by breeders collectors. Generally, Environmental Military Police IBAMA maintain enforcement actions, rescue work, seizure of illegally traded 'bicudo' specimens. The genomic DNA one specimen was sequenced on MiSeq (Illumina) sequencer. reads obtained were analyzed, trimmed, de novo assembled using CLC Workbench® v9.0 (CLC...

10.1080/23802359.2017.1347840 article EN cc-by Mitochondrial DNA Part B 2017-07-14

The gastrointestinal tracts of 32 free-ranging, 9-banded armadillos (Dasypus novemcinctus) from north-central Florida were examined for the presence helminths during July 1991 to November 1993. Aspidodera sp. (Nematoda: Aspidoderidae), most closely resembling sogandaresi, recovered 20 examined. Total numbers A. sogandaresi ranged 1 1,021 per infected animal, and followed an inverse correlation body condition index those animals. cystacanth stage acanthocephalan, Macracanthorhynchus ingens,...

10.1645/ge-1346.1 article EN Journal of Parasitology 2008-04-01

The human activity impact on wild animal populations is indicated by eco-evolutionary and demographic processes, along with their survival capacity to evolve; consequently, such data can contribute toward enhancing genetic-based conservation programs. In this context, knowledge the life-history processes required understand extant patterns of population structure in

10.1111/eva.13544 article EN cc-by Evolutionary Applications 2023-04-01

The loggerhead (Caretta caretta) is a cosmopolitan sea turtle species that are listed as vulnerable by IUCN and endangered in Brazil. In 2015, the C. caretta Southwest Atlantic subpopulation (SWA) was impacted Fundão dam break’ (FFDT) ore tailings plume heavy metals, reaching Espírito Santo coast (ES). SWA great regional management unit (RMU) of worldwide due to distinctive mtDNA lineage promoted recent radiation within Atlantic-Mediterranean region, however, low resolution mtDNA, population...

10.22541/au.170668591.12559336/v1 preprint EN Authorea (Authorea) 2024-01-31

<title>Abstract</title> The Southwest Atlantic (SWA) is an important region for the Caretta caretta characterized by unique genetic lineages; however, their life history still misunderstood. In this study, we evaluated demographic patterns of four SWA rookeries using D-loop and microsatellites data looking expansion bottlenecks signals. Then, simulated several colonization scenarios Approximate Bayesian Computation. best-supported scenario indicated that loggerheads might have colonized once...

10.21203/rs.3.rs-4314272/v1 preprint EN cc-by Research Square (Research Square) 2024-05-02
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