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Population genomics of the neotropical palm Copernicia prunifera (Miller) H. E. Moore: Implications for conservation. PLoS One 2022; 17:e0276408. [PMID: 36327224 PMCID: PMC9632875 DOI: 10.1371/journal.pone.0276408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 10/05/2022] [Indexed: 11/06/2022] Open
Abstract
Copernicia prunifera (Miller) H. E. Moore is a palm tree native to Brazil. The products obtained from its leaf extracts are a source of income for local families and the agroindustry. Owing to the reduction of natural habitats and the absence of a sustainable management plan, the maintenance of the natural populations of this palm tree has been compromised. Therefore, this study aimed to evaluate the diversity and genetic structure of 14 C. prunifera populations using single nucleotide polymorphisms (SNPs) identified through genotyping-by-sequencing (GBS) to provide information that contributes to the conservation of this species. A total of 1,013 SNP markers were identified, of which 84 loci showed outlier behavior and may reflect responses to natural selection. Overall, the level of genomic diversity was compatible with the biological aspects of this species. The inbreeding coefficient (f) was negative for all populations, indicating excess heterozygotes. Most genetic variations occurred within populations (77.26%), and a positive correlation existed between genetic and geographic distances. The population structure evaluated through discriminant analysis of principal components (DAPC) revealed low genetic differentiation between populations. The results highlight the need for efforts to conserve C. prunifera as well as its distribution range to preserve its global genetic diversity and evolutionary potential.
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da Silva KB, Frediani MH, Angrimani DDSR, Coeti RZ, Pereira RJG, Nichi M, de Almeida-Santos SM. Short-term cold storage of seminal samples of the golden lancehead pitviper (Bothrops insularis). Zoo Biol 2021; 40:256-260. [PMID: 33570216 DOI: 10.1002/zoo.21590] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 01/25/2021] [Indexed: 01/24/2023]
Abstract
Assisted reproductive technologies such as cooling, freezing, and artificial insemination are essential in conserving genetic diversity of critically endangered reptiles like the golden lancehead pitviper (Bothrops insularis). Therefore, we examined viability of semen samples from captive golden lanceheads diluted in coconut-water based extender over a 48-h period of cooling (5°C). Semen evaluations were performed immediately after the dilution and at 6, 24, and 48 h, using computer-assisted sperm analysis and stains to assess plasma membrane and acrosomal status. Our findings showed that the extender and protocol employed here were effective in preserving golden lancehead pitviper spermatozoa for a short periods of time (48 h), allowing semen samples to be transported to distant locations for immediate use without the setbacks of cryopreservation.
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Affiliation(s)
- Kalena Barros da Silva
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil.,Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
| | - Mayra Hespanhol Frediani
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil
| | - Daniel de Souza Ramos Angrimani
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil
| | - Rafaela Zani Coeti
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil.,Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
| | - Ricardo José Garcia Pereira
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil
| | - Marcílio Nichi
- Departamento de Reprodução Animal, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil
| | - Selma Maria de Almeida-Santos
- Departamento de Cirurgia, Faculdade de Medicina Veterinária e Zootecnia, Universidade São Paulo, São Paulo, São Paulo, Brazil.,Laboratório de Ecologia e Evolução, Instituto Butantan, São Paulo, São Paulo, Brazil
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