Results 71 to 80 of about 3,108 (177)

Species delimitation of Apharyngostrigea Ciurea, 1927 (Digenea: Diplostomoidea) based on morphology and molecular data from the Neotropical region of Mexico

open access: yesParasitology
The genus Apharyngostrigea comprises a group of diplostomoidean digeneans that parasitize birds of the family Ardeidae (herons), with approximately 20 species described worldwide.
Alejandra López-Jiménez   +2 more
doaj   +1 more source

Species delimitation of neotropical Characins (Stevardiinae): Implications for taxonomy of complex groups.

open access: yesPLoS ONE, 2019
Accurate species delimitation is crucial for studies of phylogeny, phylogeography, ecology, conservation and biogeography. The limits of species and genera in the Characidae family are controversial due to its uncertain phylogenetic relationships, high ...
Jorge E García-Melo   +5 more
doaj   +1 more source

Phylogeography of the widely distributed John Dory (Zeus faber, Actinopterygii: Zeiformes) reaffirms the prevalence of at least two deeply divergent clades

open access: yesJournal of Fish Biology, Volume 108, Issue 1, Page 373-386, January 2026.
Abstract The John Dory Zeus faber is a commercially exploited demersal fish species with a known distribution ranging from the Northeast Atlantic to parts of the Indian and Pacific oceans. A previous genetic survey using cytochrome c oxidase subunit I (COI) DNA barcodes suggested the presence of two geographically segregated taxonomic units within Z ...
João Tadeu Fontes   +19 more
wiley   +1 more source

How many cows are in the desert? Molecular phylogeny and species delimitation of the genus Gyriosomus (Coleoptera: Tenebrionidae: Pimeliinae) from the Atacama Desert

open access: yesSystematic Entomology, Volume 51, Issue 1, January‐March 2026.
The newly systematic rearrangement of Gyriosomus recognizes 9 clades, validates 21 taxonomical species and suggests 12 synonyms and 12 species candidates. Three taxonomical species were not evaluated. Polymorphisms, convergences and crypsis have been detected, and therefore morphology‐based taxonomy should be approached with caution. Ecological drivers
Simón Anguita‐Salinas   +7 more
wiley   +1 more source

Excluding spatial sampling bias does not eliminate oversplitting in DNA‐based species delimitation analyses

open access: yesEcology and Evolution, 2021
DNA barcoding and DNA‐based species delimitation are major tools in DNA taxonomy. Sampling has been a central debate in this context, because the geographical composition of samples affects the accuracy and performance of DNA barcoding.
Daniel Lukic   +4 more
doaj   +1 more source

Molecular and morphological identification of mealybug species (Hemiptera: Pseudococcidae) in Brazilian vineyards. [PDF]

open access: yes, 2019
Mealybugs (Hemiptera: Pseudococcidae) are pests constraining the international trade of Brazilian table grapes. They damage grapes by transmitting viruses and toxins, causing defoliation, chlorosis, and vigor losses and favoring the development of sooty ...
BERNARDI, D.   +7 more
core  

tRNA splicing [PDF]

open access: yes, 1998
Introns interrupt the continuity of many eukaryal genes, and therefore their removal by splicing is a crucial step in gene expression. Interestingly, even within Eukarya there are at least four splicing mechanisms.
Abelson, John   +2 more
core   +1 more source

Complex evolution and biogeographic history of moss‐inhabiting flea beetles from the Taiwan‐Ryukyu Island Arc (Coleoptera: Chrysomelidae: Alticini)

open access: yesSystematic Entomology, Volume 51, Issue 1, January‐March 2026.
Extensive radiation of moss‐inhabiting flea beetles in Taiwan and Japan: The Ivalia uenoi complex displays high species diversity closely related to Japanese species. Complex biogeography revealed by phylogenomics: ddRAD data uncovered a history shaped by Miocene vicariance and Pliocene dispersal from Taiwan across the Taiwan‐Ryukyu archipelago ...
Albert František Damaška   +6 more
wiley   +1 more source

DNA barcoding and species delimitation of crickets, katydids, and grasshoppers (Orthoptera) from Central and Southern Europe, with focus on the Mediterranean Basin [PDF]

open access: yesArthropod Systematics & Phylogeny
The Mediterranean Basin, recognized as a global biodiversity hotspot, harbors a remarkable diversity of grasshoppers, katydids, and crickets, many of which are endemic and potentially contain cryptic lineages.
Mattia Ragazzini   +5 more
doaj   +3 more sources

Discovery of five new species of Allacta from Yunnan and Hainan, China (Blattodea, Pseudophyllodromiidae) [PDF]

open access: yesZooKeys
We examined new Allacta materials from Yunnan and Hainan Province, China, and discovered new species using both morphological and molecular species delimitation (ABGD) methods. Five new species are described: A. bifolium Li & Wang, sp.
Bian-Lun Li   +4 more
doaj   +3 more sources

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