4.6 Article

Chromosomal Polymorphism and Speciation: The Case of the Genus Mazama (Cetartiodactyla; Cervidae)

期刊

GENES
卷 12, 期 2, 页码 -

出版社

MDPI
DOI: 10.3390/genes12020165

关键词

cytogenetics; hybrids; post-zygotic barrier; sperm-FISH; Neotropical deer

资金

  1. Sao Paulo Research Foundation (FAPESP) [2010/50748-3, 2017/07014-8, 2019/06940-1]
  2. Czech Science Foundation (GACR) [20-22517J]
  3. Ministry of Agriculture of the Czech Republic [RO 0520]
  4. Ministry of Education, Youth and Sports of the Czech Republic under the project CEITEC 2020 [LQ1601]
  5. National Fund for Scientific, Technological, and Technological Innovation Development (FONDECYT)
  6. National Council for Science, Technological, and Technological Innovation Development (CONCYTEC) Peru [116-2017-FONDECYT]
  7. CNPq/Brazil

向作者/读者索取更多资源

The study evaluated the impact of chromosomal polymorphisms as reproductive barriers within the genus Mazama, showing that inter-specific hybrids between Mazama gouazoubira and Mazama nemorivaga exhibited different degrees of fertility reduction, while intra-specific hybrids of Mazama americana with different cytotypes showed varying pairing rates for Robertsonian translocations and tandem fusions.
Chromosomal polymorphism plays a major role in speciation processes in mammals with high rates of karyotypic evolution, as observed in the family Cervidae. One remarkable example is the genus Mazama that comprises wide inter- and intra-specific chromosomal variability. To evaluate the impact of chromosomal polymorphisms as reproductive barriers within the genus Mazama, inter-specific hybrids between Mazama gouazoubira and Mazama nemorivaga (MGO x MNE) and intra-specific hybrids between cytotypes of Mazama americana (MAM) differing by a tandem (TF) or centric fusion (Robertsonian translocations-RT) were evaluated. MGO x MNE hybrid fertility was evaluated by the seminal quality and testicular histology. MAM hybrids estimation of the meiotic segregation products was performed by sperm-FISH analysis. MGO x MNE hybrids analyses showed different degrees of fertility reduction, from severe subfertility to complete sterility. Regarding MAM, RT, and TF carriers showed a mean value for alternate segregation rate of 97.74%, and 67.23%, and adjacent segregation rate of 1.80%, and 29.07%, respectively. Our results suggested an efficient post-zygotic barrier represented by severe fertility reduction for MGO x MNE and MAM with heterozygous TF. Nevertheless, RT did not show a severe effect on the reproductive fitness in MAM. Our data support the validity of MGO and MNE as different species and reveals cryptic species within MAM.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

Article Environmental Sciences

Chromosomal damage in occupationally exposed health professionals assessed by two cytogenetic methods

Dita Kadlcikova, Petra Musilova, Hana Hradska, Miluse Vozdova, Marketa Petrovova, Marek Svoboda, Jiri Rubes

Summary: The study investigated occupationally induced chromosomal damage in hospital personnel exposed to antineoplastic drugs and/or low doses of ionizing radiation. Both cytogenetic methods showed an increase in chromatid and chromosomal aberrations, as well as unstable aberrations, indicating recent exposure to genotoxic agents.

ARCHIVES OF ENVIRONMENTAL & OCCUPATIONAL HEALTH (2023)

Article Zoology

Resurrection of the genus Subulo Smith, 1827 for the gray brocket deer, with designation of a neotype

Agda Maria Bernegossi, Carolina Heloisa de Souza Borges, Eluzai Dinai Pinto Sandoval, Jose Luis Cartes, Halina Cernohorska, Svatava Kubickova, Miluse Vozdova, Renato Caparroz, Susana Gonzalez, Jose Mauricio Barbanti Duarte

Summary: This study reviewed and clarified the taxonomy of the gray brocket deer through proposal of an updated nomenclature and characterization of specimens collected near the original type locality. The results supported the polyphyly of the genus Mazama and validated the genus Subulo for the gray brocket deer.

JOURNAL OF MAMMALOGY (2023)

Article Genetics & Heredity

Divergent subgenome evolution in the allotetraploid frog Xenopus calcaratus

Martin Knytl, Nicola R. Fornaini, Barbora Bergelov, Vaclav Gvozdik, Halina Cernohorska, Svatava Kubickova, Eric B. Fokam, Ben J. Evans, Vladimir Krylov

Summary: In this study, cytogenetic and molecular FISH techniques were used to investigate the chromosome morphology and rearrangements in an allotetraploid species of the sister subgenus Silurana. The results showed that the subgenomes of this species have distinctive characteristics, with one subgenome being more conserved and resembling a closely related diploid species, while the other subgenome evolves more rapidly and exhibits pronounced changes in chromosome structure.
Article Veterinary Sciences

Stabilization of mandibular symphysis separation in an Amazonian brown brocket deer (Mazama nemorivaga)

Luis O. Baselly-Cueva, Gabriel B. Melo-Neto, David J. Galindo, Heloisa C. Lima, Sheila C. Rahal

Summary: This study reported a case of mandibular symphyseal separation in a male Amazonian brown brocket buck. A surgical repair technique using parallel stainless steel cerclage wires was introduced. After the surgical repair, the deer had normal dental occlusion and no difficulty in prehension of food.

VETERINARY RECORD CASE REPORTS (2023)

Article Zoology

Revalidation of Passalites Gloger, 1841 for the Amazon brown brocket deer P. nemorivagus (Cuvier, 1817) (Mammalia, Artiodactyla, Cervidae)

Jorge Alfonso Morales-Donoso, Gabrielle Queiroz Vacari, Agda Maria Bernegossi, Eluzai Dinai Pinto Sandoval, Pedro Henrique Faria Peres, David Javier Galindo, Benoit de Thoisy, Miluse Vozdova, Svatava Kubickova, Jose Mauricio Barbanti Duarte

Summary: A study on the taxonomic classification of Mazama nemorivaga in the Amazon region revealed morphological and cytogenetic differences with other species, suggesting the need to reposition it into a different genus. The study proposed an update to the genus name and suggested further research on the existence of other species within the genus.

ZOOKEYS (2023)

Article Agriculture, Dairy & Animal Science

Supernumerary Marker Chromosome Identified in Asian Elephant (Elephas maximus)

Halina Cernohorska, Svatava Kubickova, Petra Musilova, Miluse Vozdova, Roman Vodicka, Jiri Rubes

Summary: This study analyzed a supernumerary marker chromosome in Asian elephants using molecular cytogenetic techniques and proposed its possible origin mechanism. It also explored the relationship between the distribution of nucleolar organizer regions and heterochromatin in elephants.

ANIMALS (2023)

Article Agriculture, Dairy & Animal Science

Evaluation of minimally invasive estrus synchronization protocols in brown brocket deer (Subulo gouazoubira)

Bianca Ferrari, David Javier Galindo, Lindsay Unno Gimenes, Jose Mauricio Barbanti Duarte

Summary: This study aimed to evaluate minimally invasive protocols for estrus synchronization in the brown brocket deer. Different treatments were tested, and it was found that DIP, MGA 1x, and MGA 2x were effective in estrus synchronization, while the high dose of P4LA resulted in poor outcomes.

ANIMAL REPRODUCTION SCIENCE (2023)

Article Multidisciplinary Sciences

Transcervical artificial insemination in the brown brocket deer (Subulo gouazoubira): a promising method for assisted reproduction in deer

Gabriella Saloni Duarte, David Javier Galindo, Maria Helena Mazzoni Baldini, Jeferson Ferreira da Fonseca, Jose Mauricio Barbanti Duarte, Maria Emilia Franco Oliveira

Summary: The present study aimed to test the efficiency of transcervical artificial insemination techniques with different methods of cervical immobilization in the brown brocket deer. The results showed that both TCAI-CI and TCAI-CT techniques were successful in achieving artificial insemination, regardless of using OT as a cervical dilation protocol. This method has a high success rate and applicability, and is beneficial for the conservation of deer species.

SCIENTIFIC REPORTS (2023)

Article Veterinary Sciences

Validation of complementary non-invasive tools for stress assessment in spotted paca (Cuniculus paca)

Vanessa S. Altino, Darilia C. B. Rezende, Selene S. C. Nogueira, Leticia G. Aldrigui, Mar Roldan, Jose M. B. Duarte, Carole Fureix, Michael Mendl, Sergio L. G. Nogueira-Filho

Summary: Monitoring the concentration of glucocorticoid metabolites (GCMs) in faecal samples is a non-invasive tool for evaluating stress in wild species. This study aimed to validate the use of GCM concentration as an indicator of adrenal activity and identify behavioural indicators of distress. Four male spotted pacas were subjected to an adrenocorticotropic hormone (ACTH) challenge-test, with changes in GCM concentration and behavioural indicators recorded. The results showed a peak in GCM concentration 24 hours after high-dose ACTH injection, and spotted pacas exhibited decreased exploration and feeding, as well as increased time in the inactive but awake state.

ANIMAL WELFARE (2023)

Article Zoology

Assessing the Taxonomic Status of the Gray Brocket Mazama simplicicornis argentina Lonnberg, 1919 (Artiodactyla: Cervidae)

Eluzai Dinai Pinto Sandoval, Gabrielle Queiroz Vacari, Juan Pablo Julia, Susana Gonzalez, Miluse Vozdova, Halina Cernohorska, Svatava Kubickova, Daniela C. Kalthoff, Jose Mauricio Barbanti Duarte

Summary: This study conducted an integrative assessment using morphological, cytogenetical, and molecular data to clarify the taxonomy of M. simplicicornis argentina. The results showed that the Argentinian gray brocket is actually the same species as the Paraguayan gray brocket, S. gouazoubira. The study used qualitative skull features, cranio-morphometric results, diploid chromosome number, and phylogenetic analysis to support this conclusion.

ZOOLOGICAL STUDIES (2023)

Article Zoology

Cytogenetic, molecular, and morphological characterization of Odocoileus pandora (Merriam, 1901) (Artiodactyla, Cervidae)

Eluzai Dinai Pinto Sandoval, Agda Maria Bernegossi, Sonia Gallina, Rafael Reyna-Hurtado, Jose Mauricio Barbanti Duarte

Summary: The Yucatan brown brocket deer, initially described as Mazama pandora, was repositioned to the genus Odocoileus based on mitochondrial DNA analysis. There is still a lack of consensus on the taxonomic classification of this species. This study aims to clarify the taxonomy of O. pandora using morphological, cytogenetic, and molecular data, and suggests that a new generic name should be indicated for this taxon.

CANADIAN JOURNAL OF ZOOLOGY (2023)

暂无数据