Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae)
Distribution of blood fluke <i>Aporocotyle</i> spp. parasitizing <i>Merluccius</i> species from the coasts of South America (Peru, Chile and Argentina) constitutes an excellent opportunity to evaluate the geographical amplitude in which a parasite can exploit the same host sp...
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MDPI AG
2022-09-01
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| Online Access: | https://www.mdpi.com/1424-2818/14/9/772 |
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| author | Marcelo E. Oliva Leyla Cárdenas Isabel M. Valdivia Paulina Bruning Luis Figueroa-Fabrega Rubén Escribano |
| author_facet | Marcelo E. Oliva Leyla Cárdenas Isabel M. Valdivia Paulina Bruning Luis Figueroa-Fabrega Rubén Escribano |
| author_sort | Marcelo E. Oliva |
| collection | DOAJ |
| description | Distribution of blood fluke <i>Aporocotyle</i> spp. parasitizing <i>Merluccius</i> species from the coasts of South America (Peru, Chile and Argentina) constitutes an excellent opportunity to evaluate the geographical amplitude in which a parasite can exploit the same host species. Phylogenetic analyses (partial sequences of SSU rDNA, LSU rDNa, and <i>cox1</i> gene) were performed to characterize the genetic lineage of <i>Aporocotyle</i> species described from South American Hake: <i>Merluccius australis, M. gayi,</i> and <i>M. hubbsi.</i> The Phylogenetic analyses (SSUrDNA and LSUrDNA) revealed an absence of genetic variability in <i>Aporocotyle</i> obtained over a gradient of 6800 km, covering two oceans and three closely related hosts. Consequently, the species infecting <i>Merluccius</i> spp. in South America is <i>Aporocotyle argentinensis</i> Smith 1969, by priority law. Phylogeographic analysis suggests a pattern of spatial differentiation and genetic population structure associated with the geographical distribution of the host’s species. A specimen with a haplotype found in <i>M. gayi</i> was collected from <i>M. australis</i> from Puerto Montt, and three worms (from Coquimbo, Constitución and Talcahuano, host <i>M. gayi</i>) harbored a haplotype found in <i>M. australis</i> + <i>M. hubbsi,</i> suggesting that the gene flow between different hosts and geographical distributions occurs when the distribution of adequate hosts overlaps, avoiding speciation in blood flukes from South American hakes. |
| first_indexed | 2024-03-10T00:15:18Z |
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| issn | 1424-2818 |
| language | English |
| last_indexed | 2024-03-10T00:15:18Z |
| publishDate | 2022-09-01 |
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| series | Diversity |
| spelling | doaj.art-bbef51a7cd8c49e18c5d5608670ab0142023-11-23T15:53:21ZengMDPI AGDiversity1424-28182022-09-0114977210.3390/d14090772Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae)Marcelo E. Oliva0Leyla Cárdenas1Isabel M. Valdivia2Paulina Bruning3Luis Figueroa-Fabrega4Rubén Escribano5Instituto Ciencias Naturales Alexander von Humboldt, Universidad de Antofagasta, Antofagasta 1270300, ChileInstituto de Ciencias Ambientales y Evolutivas, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5110566, ChileLaboratorio de Estudios Ecosistémicos—LECOS, Escuela de Ingeniería y Negocios, Universidad Viña del Mar, Viña del Mar 2520000, ChileCentro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia 5090000, ChileLaboratorio de Estudios Ecosistémicos—LECOS, Escuela de Ingeniería y Negocios, Universidad Viña del Mar, Viña del Mar 2520000, ChileMillenium Institute of Oceanography, Universidad de Concepción, Concepción 4070386, ChileDistribution of blood fluke <i>Aporocotyle</i> spp. parasitizing <i>Merluccius</i> species from the coasts of South America (Peru, Chile and Argentina) constitutes an excellent opportunity to evaluate the geographical amplitude in which a parasite can exploit the same host species. Phylogenetic analyses (partial sequences of SSU rDNA, LSU rDNa, and <i>cox1</i> gene) were performed to characterize the genetic lineage of <i>Aporocotyle</i> species described from South American Hake: <i>Merluccius australis, M. gayi,</i> and <i>M. hubbsi.</i> The Phylogenetic analyses (SSUrDNA and LSUrDNA) revealed an absence of genetic variability in <i>Aporocotyle</i> obtained over a gradient of 6800 km, covering two oceans and three closely related hosts. Consequently, the species infecting <i>Merluccius</i> spp. in South America is <i>Aporocotyle argentinensis</i> Smith 1969, by priority law. Phylogeographic analysis suggests a pattern of spatial differentiation and genetic population structure associated with the geographical distribution of the host’s species. A specimen with a haplotype found in <i>M. gayi</i> was collected from <i>M. australis</i> from Puerto Montt, and three worms (from Coquimbo, Constitución and Talcahuano, host <i>M. gayi</i>) harbored a haplotype found in <i>M. australis</i> + <i>M. hubbsi,</i> suggesting that the gene flow between different hosts and geographical distributions occurs when the distribution of adequate hosts overlaps, avoiding speciation in blood flukes from South American hakes.https://www.mdpi.com/1424-2818/14/9/772phylogeographygenetic lineageSSU rDNA geneLSU rDNA gene<i>cox1</i> genespatial differentiation |
| spellingShingle | Marcelo E. Oliva Leyla Cárdenas Isabel M. Valdivia Paulina Bruning Luis Figueroa-Fabrega Rubén Escribano Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) Diversity phylogeography genetic lineage SSU rDNA gene LSU rDNA gene <i>cox1</i> gene spatial differentiation |
| title | Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) |
| title_full | Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) |
| title_fullStr | Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) |
| title_full_unstemmed | Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) |
| title_short | Spatial Pattern of Genetic Diversity in the Blood Fluke <i>Aporocotyle argentinensis</i> (Digenea, Aporocotylidae) from South American Hakes (Pisces: Merluccidae) |
| title_sort | spatial pattern of genetic diversity in the blood fluke i aporocotyle argentinensis i digenea aporocotylidae from south american hakes pisces merluccidae |
| topic | phylogeography genetic lineage SSU rDNA gene LSU rDNA gene <i>cox1</i> gene spatial differentiation |
| url | https://www.mdpi.com/1424-2818/14/9/772 |
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