Results 171 to 180 of about 15,172 (305)

Circadian regulation of reproduction and neoblast cell division in the catenulid flatworm Stenostomum virginianum (Platyhelminthes)

open access: yesPhotochemistry and Photobiology, EarlyView.
The circadian clock and melatonin coordinate homeostasis in many animals, yet their influence on reproduction and neoblast proliferation has only been shown in triclads. This study demonstrates that the early‐branching catenulid Stenostomum virginianum contains photoreceptive refractile bodies, synthesizes endogenous melatonin, and that exogenous ...
Daniel L. Stanton   +5 more
wiley   +1 more source

Plastid Phylogenomics of Elatostemateae (Urticaceae): Insights Into Structural Variation and Phylogenetic Relationships [PDF]

open access: yesEcol Evol
This study leverages complete plastid and nuclear ribosomal DNA sequences from 40 species to resolve the complex phylogeny and organellar genome evolution of the diverse plant tribe Elatostemateae. The analysis uncovered significant plastome structural variations, including novel inversions and a rare mitochondrial DNA integration event, and identified
Fu L   +5 more
europepmc   +2 more sources

Sharing of 4‐hydroxy‐3‐(methylthio)benzaldehyde as a pollination semiochemical among distantly related sexually deceptive orchids

open access: yesPlant Biology, EarlyView.
We demonstrate that Spiculaea ciliata attracts male Thynnoturneria abspiculus through a single semiochemical, identified as 4‐hydroxy‐3‐(methylthio)benzaldehyde, emitted from its labellum. This compound alone elicited sexual behaviours in male wasps comparable to those elicited by whole floral extracts and attracted wasps when presented on a synthetic ...
S. K. van Kints   +5 more
wiley   +1 more source

Integrating Phylogenomics and Biogeography of Spectracanthicus (Siluriformes: Loricariidae) Reveals Complex Evolutionary History in a Brazilian Shield Endemic Genus

open access: yesZoologica Scripta, EarlyView.
ABSTRACT Loricariidae is the most diverse catfish family in the Neotropics. Within this group, the genus Spectracanthicus presents conflicting phylogenetic signals: morphological studies suggest monophyly, whereas previous molecular analyses often yield unresolved relationships and taxonomic uncertainty.
Felipe A. A. Araújo   +6 more
wiley   +1 more source

Goshawk Genomics: Genome Wide Single Nucleotide Polymorphisms (SNPs) Confirm Species Status of Astur gentilis and Astur atricapillus

open access: yesZoologica Scripta, EarlyView.
ABSTRACT The Astur [gentilis] superspecies comprising five species has a long record of taxonomic debate. Recent evidence based on mitochondrial data, limited genomic data and bioacoustics suggested a Nearctic‐Palearctic split of the former Holarctic species Astur gentilis, leading to a taxonomic revision of classifying Palearctic Astur gentilis and ...
Florian Kunz   +5 more
wiley   +1 more source

Update to the Taxonomic Outline of the Archaea and Bacteria and inclusion of the Taxonomic Notes into the Manual

open access: yesMajor Reference Works, Page 1-6.

Bergey's Manual of Systematics of Archaea and Bacteria (BMSAB) is a reference work aimed at undergraduates, graduate students, researchers, professors and experienced professionals at all levels. About a hundred new genera and 600+ new species have been described per year for each of the last 5 years.
Raúl Riesco Jarrín   +10 more
wiley  

+1 more source

Can Repeated Reductive Genome Evolution Across Archaeplastida Explain Volatility in Traits?

open access: yesAdvanced Genetics, Volume 7, Issue 4, December 2026.
Genome evolution in Archaeplastida is often framed around gene gains and increasing complexity. Yet ancestral reconstructions reveal recurrent genome contraction, with ancestors frequently harboring larger gene repertoires than descendants. Across red algae, land‐plant ancestry, and embryophyte diversification, repeated expansion and reduction cycles ...
Cäcilia F. Kunz   +3 more
wiley   +1 more source

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