On the Stability of Metastable Monomers to Bias the Supramolecular Polymerization of Naphthalendiimides.

Herein, we report the synthesis of the naphthalendiimides (NDIs) 1-3 endowed with peripheral 3,4,5-trialkoxybenzamide units and a variable number of 1,2,3-triazole rings. Both the benzamide units and the triazole rings are able to form six- or seven-membered intramolecularly H-bonded pseudocycles that behave as metastable monomeric units. Whilst freshly prepared solutions of 1-3 afford H-type aggregates, the presence or lack of the 1,2,3-triazole rings strongly conditions the kinetics and stability of the resulting aggregated species.

Increasing the species diversity of the monotypic genus Pariolius Cope 1872 (Siluriformes: Heptapteridae) after more than 150 years.

Pariolius is a heptapterid genus represented by P. armillatus that is distributed along the upper Amazon River basin. A taxonomic integrative revision of Pariolius from Colombian Rivers revealed two new species.

Erratum: DARIO R. FAUSTINO-FUSTER, JEISSON A. LÓPEZ-CASTAÑO, JHONATAN M. QUIÑONES & VANESSA MEZA-VARGAS (2024) Increasing the species diversity of the monotypic genus Pariolius Cope 1872 (Siluriformes: Heptapteridae) after more than 150 years. Zootaxa, 5433 (3): 389-403.

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Resurrection of Typhlops cubae Bibron, 1843 (Serpentes: Typhlopidae), with taxonomic comments on the Typhlops lumbricalis species group.

We resurrected Typhlops cubae Bibron, 1843, a species considered as a nomen dubium for the past 55 years. Based on a designated lectotype and nearly 80 additional specimens, we redescribed the species and compare it with other congeners from the Bahamas, Cuba, and Hispaniola Islands. We found that Typhlops cubae is related to the Typhlops lumbricalis species group, restricting its distribution to western Cuba and Isla de la Juventud, and overlapping with Typhlops pachyrhinus along the Pinar del Río and Artemisa provinces.

Taxonomic assessment of the Bolitoglossa (Eladinea) subgenus (Caudata: Plethodontidae) with the description of two new species from the Cordillera de Talamanca, Costa Rica.

Isthmian Central America boasts a diverse array of salamanders, with a total of 72 species spanning three genera. Among these, a subset of the subgenus Bolitoglossa (Eladinea), stands out as particularly rare within the Cordillera de Talamanca. Many of its species have been discovered since 2009, with the majority documented from fewer than five specimens.

Distribution of the genus Dendrocephalus (Crustacea, Branchiopoda, Anostraca) in Argentina: a review.

The fairy shrimp Dendrocephalus brasiliensis was first found in Brazil in temporary rainpools in the northeastern states of Piauí and Bahia. Gradually, new records were added in other northeastern states up to the state of Minas Gerais, in the Southeast region of the country. The species was even found south of Minas Gerais in the state of São Paulo, but not in wild conditions, but in rearing tanks associated with aquaculture practices.

Diversity of nocturnal Cerambycidae (Coleoptera: Chrysomeloidea) from seven localities in Michoacán, Mexico, with description of a new species.

We used a long-time light trap for capturing nocturnal beetles. The specimens collected belong to 24 species, 21 genera, 11 tribes, and three subfamilies of the family Cerambycidae. Of these, Gnaphalodes trachyderoides Thomson, 1861; Tylcus hartwegii (White, 1855); Anelaphus piceus (Chemsak, 1962); Metironeus hesperus Chemsak, 1991; Pseudoperiboeum subarmatum Linsley, 1935; Neocompsa puncticollis asperula (Bates, 1885); Compsibidion vanum (Thomson, 1867); Canidia spinicornis (Bates, 1881); Lepturges (Lepturges) angulatus (LeConte, 1852); Sternidius naeviicornis (Bates, 1885); Oreodera noguerai McCarty, 2001; Eupogonius arizonensis Knull, 1954; Lypsimena fuscata Haldeman, 1847; Arhopalus asperatus (LeConte, 1859); and Arhopalus montanus (LeConte, 1873) represent new state records.

A new species of direct-developing frog of the genus Eleutherodactylus (Anura: Eleutherodactylidae) from Tamaulipas, Mexico.

The number of species of the subgenus Syrrhophus, genus Eleutherodactylus has increased rapidly in the last eight years, due to recent taxonomic studies. This subgenus of direct-developing frogs is well represented in Mexico, which harbors more than 90% of the species richness reported for the subgenus. In this study, we describe one new species, Eleutherodactylus (Syrrhophus) coelum sp.

CHECKLIST OF ORIBATID MITES (ACARI: ORIBATIDA) FROM MEXICO.

The Checklist of Oribatida from Mexico includes all known records to date, resulting in 768 species included in 378 genera from 117 families and 43 superfamilies. Records of nine fossil species from Lower Miocene amber (23 Ma) from Chiapas are included. Records are given for 12 of the biogeographic provinces proposed for the country, covering most of the Mexican states (except Sonora, Sinaloa and Tlaxcala), and therefore Mexico ranges among regions with a high species diversity, like Japan (833), India (789), Italy (721), Russian Far East (599), Canada (580) and Brazil (576).

Euchaetomera plebeja Hansen, 1912 (Mysida; Mysidae) in western Mexico.

The opossum shrimp Euchaetomera plebeja Hansen, 1912 (Mysida; Mysidae) is one of the nine described species currently known in this genus. Until now, it has been considered a rare species, only partly illustrated, known from western Mexico, western Colombia, Peru, and Chile (one specimen in each locality), with a possible additional record off Hawaii. In a recent study, it was recorded abundantly in western Mexico where it was collected in 20 localities, all in the Gulf of California.

Three new species of Pheidole Westwood, 1839 (Hymenoptera: Formicidae: Myrmicinae: Attini) from central Mexico.

Pheidole is the richest ant genus in the world. We describe herein three new species from the state of Puebla, Mexico: P. jolalpanensis sp.

Antibacterial activity of withanolides, labdane glucosides, flavonoids and other constituents from two populations of Physalis patula.

Two populations of Physalis patula Miller collected in different localities (Querétaro and Teotihuacán) of Central México were analyzed. Eight new compounds including three withanolides, physapatolides A-C (1-3), two labdanes, 12-epi-physacoztomatin (10) and physapatulone (12), besides three 12-O-glucosyl labdanes, patulosides A-C (13-15), were isolated from these collections. A series of known withanolides, flavonoids, labdanes, sucrose esters, and sterols were also isolated.

Upconversion-Linked Immunosorbent Assay for the Biomimetic Detection of the Mycotoxin Cyclopiazonic Acid.

The neurotoxin α-cyclopiazonic acid (CPA) is an emerging mycotoxin produced as a secondary metabolite by several fungi species (., spp. and spp.

Rewording Theoretical Predictions at Colliders with Vacuum Amplitudes.

We propose multiloop vacuum amplitudes in the loop-tree duality (LTD) as the optimal building blocks for efficiently assembling theoretical predictions at high-energy colliders. This hypothesis is strongly supported by the manifestly causal properties of the LTD representation of a vacuum amplitude. The vacuum amplitude in LTD, acting as a kernel, encodes all the final states contributing to a given scattering or decay process through residues in the on-shell energies of the internal propagators.

A new tool to quantify biodiversity change under landscape transformation.

Identifying how species richness or diversity changes with different proportions of natural and anthropized environments in the landscape is important for landscape management for conservation. Here, we propose a new method to assess biodiversity changes in landscapes with varying proportions of habitat types. The algorithm is based on the resampling of individuals recorded in different habitats considering both the proportion occupied by each habitat in the landscape and the number of individuals recorded in each habitat.

Changes in cerebral cortex redox status and cognitive performance in short- and long-term high-sucrose diet fed rats.

Rising evidence suggests that Metabolic Syndrome (MetS) would be correlated with the development of neurodegenerative diseases. Although this has emerged as a relevant area of research, it has not been fully explored. It is not clear if a greater impairment of the metabolic peripheral environment is accompanied by a greater impairment of the central nervous system.

Linking adults and cystacanths of a new species of Rhadinorhynchus Lühe, 1911 (Acanthocephala: Rhadinorhynchidae) from the Pacific coast of Mexico by using morphological and molecular data.

During parasitological surveys of marine fishes and zooplankton in localities of the Northwestern Pacific coast of Mexico, 28 Gafftopsail pompano (Trachinotus rhodopus Gill) and 50 mysid crustaceans (Metamysidopsis frankfiersi Hendrickx & Hernández-Payán) we identified to be infected with adults and cystacanths, respectively of an acanthocephalan morphologically corresponding to the genus Rhadinorhynchus Lühe, 1911. DNA sequences of the small (SSU) and large (LSU) subunits of ribosomal DNA, and cytochrome c oxidase subunit 1 (cox 1) from mitochondrial DNA were obtained. Phylogenetic analyses revealed that the newly sequenced individuals in a clade with Rhadinorhynchus sp.

Biotechnological properties of Bacillus amylolyquefaciens B65 isolated from an artisanal tannery.

Leather industry is traditionally characterized by the use of large amounts of chemical agents, some of which are toxic to human health and the environment. However, during the last years, many efforts have been made with the aim of successfully implement enzymes as agents for different leather production stages. The lipopeptides produced by the Bacillus spp.

Interplay between reactive oxygen species and ERK activation in cervical cancer cells.

Introduction: Among the types of cancer affecting women, cervical cancer (CC) is a public health problem with high global incidence and mortality rates. It is currently classified into three main histological types: squamous cell carcinoma (SCC), adenocarcinoma (AC), and adenosquamous (ASC) carcinoma. All of them lack a targeted therapy.