Delimitation and species discovery in the Profundulidae fish family: Using genetic, environmental and morphologic data to address taxonomic uncertainty.

The family Profundulidae includes some one of the most enigmatic freshwater fishes of Mesoamerica: despite many attempts, a robust phylogenetic framework to delimit species is lacking, mainly due to limited morphological variation within the group. The accumulation of molecular data of profundulid fishes has led to advances in the description of new taxa, but relatively less progress has been made estimating evolutionary and phylogenetic relationships for this fish family. Here, we adopt an integrative taxonomy approach including the use of nuclear and mitochondrial DNA sequences, morphometric and ecological data, to test species boundaries in profundulid fishes in the westernmost area of their known distribution range in the states of Guerrero and Oaxaca, Mexico.

Neotropical sisterhood: new species of von Nordmann, 1832 (Platyhelminthes: Monogenea) infecting and (Siluriformes: Heptapteridae) in Mexico.

We describe two new species of monogenean parasites of the genus von Nordmann, 1832 infecting Neotropical catfishes (Siluriformes) in southern Mexico: n. sp. from 'chulín', collected in Oaxaca; and n.

Morphological and molecular characterization of three new species of Gyrodactylus (Monogenea: Gyrodactylidae) infecting Sicydium salvini (Teleostei: Gobiidae) in Mexican rivers draining into the Pacific Ocean.

The genus Gyrodactylus von Nordmann, 1832 is one of the most diverse within the class Monogenea; it contains mainly parasites of freshwater and marine teleost fishes. Around 40 species of Gyrodactylus have been described from gobiid fishes; mainly in Europe, as only two species are known from the Americas. In this study, we describe three new gyrodactylids from the body surface and fins of the goby Sicydium salvini (Gobiidae, Sycydiinae), which has a wide distribution on the Pacific coast, from Mexico to Panama.

Morpho-molecular characterization of Gyrodactylus parasites of farmed tilapia and their spillover to native fishes in Mexico.

Translocation of fishes for aquaculture has resulted in the co-introduction of some of their parasites. African cichlid fishes, generically called "tilapias" have been introduced worldwide, along with their monogenean parasites. In a nation-wide survey, we characterised monogeneans of the genus Gyrodactylus infecting farmed "tilapia" throughout Mexico.