Molecular phylogeny of the genusMargotrema(Digenea: Allocreadiidae), parasitic flatworms of goodeid freshwater fishes across central Mexico: species boundaries, host-specificity, and geographical congruence

2013 ◽  
Vol 168 (1) ◽  
pp. 1-16 ◽  
Author(s):  
Andrés Martínez-Aquino ◽  
Fadia Sara Ceccarelli ◽  
Gerardo Pérez-Ponce De León
Keyword(s):  
Molecular Phylogeny ◽  
Host Specificity ◽  
Freshwater Fishes ◽  
Species Boundaries ◽  
Central Mexico

Molecular phylogeny of Pemphiginae (Hemiptera: Aphididae) inferred from nuclear gene EF-1α sequences

2008 ◽  
Vol 98 (5) ◽  
pp. 499-507 ◽  
Author(s):  
H.C. Zhang ◽  
G.X. Qiao
Keyword(s):  
Phylogenetic Analysis ◽  
Molecular Phylogeny ◽  
Host Specificity ◽  
Nuclear Gene ◽  
Molecular Data ◽  
Molecular Phylogenetic Analysis ◽  
Phylogenetic Study ◽  
Primary Host ◽  
Molecular Phylogenetic Study ◽  
Molecular Phylogenetic

AbstractThree traditional tribes of Fordini, Pemphigini and Eriosomatini comprise Pemphiginae, and there are two subtribes in Fordini and Pemphigini, respectively. Most of the species in this subfamily live heteroecious holocyclic lives with distinct primary host specificity. The three tribes of Pemphigini (except Prociphilina), Eriosomatini and Fordini use three families of plants, Salicaceae (Populus), Ulmaceae (Ulums) and Anacardiaceae (Pistacia and Rhus), as primary hosts, respectively, and form galls on them. Therefore, the Pemphigids are well known as gall makers, and their galls can be divided into true galls and pseudo-galls in type. We performed the first molecular phylogenetic study of Pemphiginae based on molecular data (EF-1α sequences). Results show that Pemphiginae is probably not a monophylum, but the monophyly of Fordini is supported robustly. The monophyly of Pemphigini is not supported, and two subtribes in it, Pemphigina and Prociphilina, are suggested to be raised to tribal level, equal with Fordini and Eriosomatini. The molecular phylogenetic analysis does not show definite relationships among the four tribes of Pemphiginae, as in the previous phylogenetic study based on morphology. It seems that the four tribes radiated at nearly the same time and then evolved independently. Based on this, we can speculate that galls originated independently four times in the four tribes, and there is no evidence to support that true galls are preceded by pseudo-galls, as in the case of thrips and willow sawflies.

scholarly journals Taxonomic revision of the genus Zygorhizidium: Zygorhizidiales and Zygophlyctidales ord. nov. (Chytridiomycetes, Chytridiomycota)

2020 ◽  
Vol 5 (1) ◽  
pp. 17-38 ◽  
Author(s):  
K. Seto ◽  
S. Van Den Wyngaert ◽  
Y. Degawa ◽  
M. Kagami
Keyword(s):  
Molecular Phylogeny ◽  
Host Specificity ◽  
Type Species ◽  
Taxonomic Revision ◽  
The Other ◽  
Ultrastructural Observation ◽  
Resting Spore ◽  
Distinct Genus ◽  
Current Classification

During the last decade, the classification system of chytrids has dramatically changed based on zoospore ultrastructure and molecular phylogeny. In contrast to well-studied saprotrophic chytrids, most parasitic chytrids have thus far been only morphologically described by light microscopy, hence they hold great potential for filling some of the existing gaps in the current classification of chytrids. The genus Zygorhizidium is characterized by an operculate zoosporangium and a resting spore formed as a result of sexual reproduction in which a male thallus and female thallus fuse via a conjugation tube. All described species of Zygorhizidium are parasites of algae and their taxonomic positions remain to be resolved. Here, we examined morphology, zoospore ultrastructure, host specificity, and molecular phylogeny of seven cultures of Zygorhizidium spp. Based on thallus morphology and host specificity, one culture was identified as Z. willei parasitic on zygnematophycean green algae, whereas the others were identified as parasites of diatoms, Z. asterionellae on Asterionella, Z. melosirae on Aulacoseira, and Z. planktonicum on Ulnaria (formerly Synedra). According to phylogenetic analysis, Zygorhizidium was separated into two distinct order-level novel lineages; one lineage was composed singly of Z. willei, which is the type species of the genus, and the other included the three species of diatom parasites. Zoospore ultrastructural observation revealed that the two lineages can be distinguished from each other and both possess unique characters among the known orders within the Chytridiomycetes. Based on these results, we accommodate the three diatom parasites, Z. asterionellae, Z. melosirae, and Z. planktonicum in the distinct genus Zygophlyctis, and propose two new orders: Zygorhizidiales and Zygophlyctidales.

Host specificity, pathogenicity, and mixed infections of trypanoplasms from freshwater fishes

2014 ◽  
Vol 114 (3) ◽  
pp. 1071-1078 ◽  
Author(s):  
Alexander Losev ◽  
Anastasiia Grybchuk-Ieremenko ◽  
Alexei Yu. Kostygov ◽  
Julius Lukeš ◽  
Vyacheslav Yurchenko
Keyword(s):  
Host Specificity ◽  
Freshwater Fishes ◽  
Mixed Infections

Helminth Parasites of Freshwater Fishes of the Ayuquila River, Sierra de Manantlán Biosphere Reserve, West Central Mexico

10.1654/4067 ◽  
2004 ◽  
Vol 71 (1) ◽  
pp. 67-72 ◽  
Author(s):  
Guillermo Salgado-Maldonado ◽  
Norman Mercado-Silva ◽  
Guillermina Cabañas-Carranza ◽  
Juan Manuel Caspeta-Mandujano ◽  
Rogelio Aguilar-Aguilar ◽  
...  
Keyword(s):  
Biosphere Reserve ◽  
Freshwater Fishes ◽  
Central Mexico ◽  
Helminth Parasites ◽  
West Central ◽  
Sierra De Manantlán

scholarly journals Assessing Species Boundaries Using Multilocus Species Delimitation in a Morphologically Conserved Group of Neotropical Freshwater Fishes, the Poecilia sphenops Species Complex (Poeciliidae)

PLoS ONE ◽  
2015 ◽  
Vol 10 (4) ◽  
pp. e0121139 ◽  
Author(s):  
Justin C. Bagley ◽  
Fernando Alda ◽  
M. Florencia Breitman ◽  
Eldredge Bermingham ◽  
Eric P. van den Berghe ◽  
...  
Keyword(s):  
Species Delimitation ◽  
Species Complex ◽  
Freshwater Fishes ◽  
Species Boundaries ◽  
Poecilia Sphenops
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