M M Montes, Y Croci, J Barneche, W Ferrari, G Reig Cardarella, S Martorelli
{"title":"根据形态学和分子证据描述伊瓜苏河流域颊鱼中的 Saccocoelioides miguelmontesi n. sp.(Digenea: Haploporidae)。","authors":"M M Montes, Y Croci, J Barneche, W Ferrari, G Reig Cardarella, S Martorelli","doi":"10.1017/S0022149X24000117","DOIUrl":null,"url":null,"abstract":"<p><p>Here we describe a new species of the genus <i>Saccocoelioides</i> found parasitizing <i>Astyanax dissimilis</i> Garavello & Sampaio, <i>Psalidodon bifasciatus</i> (Garavello and Sampaio) and <i>Bryconamericus ikaa</i> Casciotta, Almirón & Azpelicueta from the Iguazu National Park, Misiones province, Argentina. <i>Saccocoelioides miguelmontesi</i> n. sp. was studied based on morphological and molecular (28S rDNA and COI mtDNA sequences) data. The COI mtDNA tree indicated that the specimens collected from the three fish hosts are conspecific, with an intragroup p-distance of 0%. The new species shows an intermediate morphological configuration between the diminutive and robust forms described for <i>Saccocoelioides</i> by Curran (2018). Although, in the 28S rDNA tree, it is placed in a well-supported clade with the two robust species analysed (<i>S. elongatus</i> and S<i>. magnus</i>; p-distance of 1 and 2%, respectively), it differs from the robust group by the range of body size, mature egg size, oral and ventral sucker size, sucker ratio, oral sucker to pharynx ratio, and post-cecal or post-testis/body length percentage. Our results led us to redefine the robust group as having eggs shorter or equal in length to the pharynx. <i>Saccocoelioides miguelmontesi</i> n. sp. the 10<sup>th</sup> species reported from Argentina and the 7<sup>th</sup> species within the robust group.</p>","PeriodicalId":15928,"journal":{"name":"Journal of Helminthology","volume":"98 ","pages":"e24"},"PeriodicalIF":1.3000,"publicationDate":"2024-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Description of <i>Saccocoelioides miguelmontesi</i> n. sp. (Digenea: Haploporidae) from characid fishes in the Iguazu River Basin based on morphological and molecular evidence.\",\"authors\":\"M M Montes, Y Croci, J Barneche, W Ferrari, G Reig Cardarella, S Martorelli\",\"doi\":\"10.1017/S0022149X24000117\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Here we describe a new species of the genus <i>Saccocoelioides</i> found parasitizing <i>Astyanax dissimilis</i> Garavello & Sampaio, <i>Psalidodon bifasciatus</i> (Garavello and Sampaio) and <i>Bryconamericus ikaa</i> Casciotta, Almirón & Azpelicueta from the Iguazu National Park, Misiones province, Argentina. <i>Saccocoelioides miguelmontesi</i> n. sp. was studied based on morphological and molecular (28S rDNA and COI mtDNA sequences) data. The COI mtDNA tree indicated that the specimens collected from the three fish hosts are conspecific, with an intragroup p-distance of 0%. The new species shows an intermediate morphological configuration between the diminutive and robust forms described for <i>Saccocoelioides</i> by Curran (2018). Although, in the 28S rDNA tree, it is placed in a well-supported clade with the two robust species analysed (<i>S. elongatus</i> and S<i>. magnus</i>; p-distance of 1 and 2%, respectively), it differs from the robust group by the range of body size, mature egg size, oral and ventral sucker size, sucker ratio, oral sucker to pharynx ratio, and post-cecal or post-testis/body length percentage. Our results led us to redefine the robust group as having eggs shorter or equal in length to the pharynx. <i>Saccocoelioides miguelmontesi</i> n. sp. the 10<sup>th</sup> species reported from Argentina and the 7<sup>th</sup> species within the robust group.</p>\",\"PeriodicalId\":15928,\"journal\":{\"name\":\"Journal of Helminthology\",\"volume\":\"98 \",\"pages\":\"e24\"},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2024-03-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Helminthology\",\"FirstCategoryId\":\"99\",\"ListUrlMain\":\"https://doi.org/10.1017/S0022149X24000117\",\"RegionNum\":3,\"RegionCategory\":\"生物学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"PARASITOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Helminthology","FirstCategoryId":"99","ListUrlMain":"https://doi.org/10.1017/S0022149X24000117","RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PARASITOLOGY","Score":null,"Total":0}
Description of Saccocoelioides miguelmontesi n. sp. (Digenea: Haploporidae) from characid fishes in the Iguazu River Basin based on morphological and molecular evidence.
Here we describe a new species of the genus Saccocoelioides found parasitizing Astyanax dissimilis Garavello & Sampaio, Psalidodon bifasciatus (Garavello and Sampaio) and Bryconamericus ikaa Casciotta, Almirón & Azpelicueta from the Iguazu National Park, Misiones province, Argentina. Saccocoelioides miguelmontesi n. sp. was studied based on morphological and molecular (28S rDNA and COI mtDNA sequences) data. The COI mtDNA tree indicated that the specimens collected from the three fish hosts are conspecific, with an intragroup p-distance of 0%. The new species shows an intermediate morphological configuration between the diminutive and robust forms described for Saccocoelioides by Curran (2018). Although, in the 28S rDNA tree, it is placed in a well-supported clade with the two robust species analysed (S. elongatus and S. magnus; p-distance of 1 and 2%, respectively), it differs from the robust group by the range of body size, mature egg size, oral and ventral sucker size, sucker ratio, oral sucker to pharynx ratio, and post-cecal or post-testis/body length percentage. Our results led us to redefine the robust group as having eggs shorter or equal in length to the pharynx. Saccocoelioides miguelmontesi n. sp. the 10th species reported from Argentina and the 7th species within the robust group.
期刊介绍:
Journal of Helminthology publishes original papers and review articles on all aspects of pure and applied helminthology, particularly those helminth parasites of environmental health, medical or veterinary importance. Research papers on helminths in wildlife hosts, including plant and insect parasites, are also published along with taxonomic papers contributing to the systematics of a group. The journal will be of interest to academics and researchers involved in the fields of human and veterinary parasitology, public health, microbiology, ecology and biochemistry.