Results 51 to 60 of about 1,025 (146)
Too rough to be a Hypsibius: multipopulation survey accentuates the phylogenetic position and apomorphies of Hypsibius scabropygus (Eutardigrada: Hypsibiidae) [PDF]
Zoological Journal of the Linnean SocietyAbstract Tardigrade taxonomy is undergoing a turbulent phase of reclassifying various species that have previously been gathered within large wastebasket genera, such as Diphascon or Hypsibius. The application of genetic sequencing, paired with detailed analysis of fine morphological features in 3D using scanning electron microscopy ...
Piotr Gąsiorek +4 more
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Vessel elements of two thelypteroid ferns-part I
Botanical Studies, 2020 Background Hydraulically efficient xylem was evolved in the vascular plants as an apomorphy of the group. Main xylem components involved in water conduction are tracheid and vessel.
Swastika Laskar +2 more
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From Cohesion to Norms: How Animal Groups Come, Stay, and Function Together
Ethology, Volume 132, Issue 9, Page 604-622, September 2026.The present review underscores two salient points: In the context of evolutionary transitions to pair‐ and group living, it is imperative to acknowledge the distinction between selective forces that act during the origin of these social systems and those that act during their subsequent maintenance.
Peter M. Kappeler
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Journal of Comparative Neurology, Volume 534, Issue 8, August 2026.Sturgeons are an ancient and basal group of ray‐finned fishes whose pallium consists of lateral, medial, and posterior divisions. The connections of these divisions were determined by injections of biotinylated dextran amine and DiI. Although there is considerable overlap in the connections of these pallial divisions, their heaviest connections are ...
R. Glenn Northcutt
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International Journal of Molecular Sciences, 2023 The SSU nrDNA, a small subunit of the nuclear ribosomal DNA (coding 18S rRNA), is one of the most frequently sequenced genes in molecular studies in Hexapoda. In insects, including true bugs (Hemiptera: Heteroptera), only its primary structures (i.e., aligned sequences) are predominantly used in phylogenetic reconstructions.
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Neotropical IchthyologyBaryancistrus xanthellus is a species from the Ancistrini tribe known commonly as "amarelinho " or "golden nugget pleco". It is one of the most popular and valued ornamental fishes due to its color pattern.
Larissa A. Medeiros +4 more
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Austral Entomology, Volume 65, Issue 3, August 2026.ABSTRACT A new species of jewel beetle, Temognatha sundholmi Lang, sp. nov., is described from the Great Victoria Desert in South Australia. A broader investigation, using mtDNA COI ‘barcode’ sequences from 178 specimens representing 54 buprestid species, places the new species with Temognatha flavocincta (Gory & Laporte, 1838) in the informal ...
Peter J. Lang, Mark I. Stevens
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Frontiers in Zoology, 2006 The question of arthropod head segmentation has become one of the central issues in Evolutionary Developmental Biology. The number of theories pertaining to head segments progressively enlarges, old concepts have been revitalized, and nearly every ...
Scholtz Gerhard, Wolff Carsten
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Austral Entomology, Volume 65, Issue 3, August 2026.ABSTRACT The Oiketicinae genus Hyalinaria Bethune‐Baker, 1910, is revised. The use of both morphological information and genetic sequence data indicates that Hyalinaria and Pseudoclania Bethune‐Baker, 1915 sp. nov., are synonymous, with the latter genus here treated as a junior subjective synonym of the former.
Ethan P. Beaver
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EvoDevo, 2019 Background Eyes have evolved and been lost multiple times during animal evolution, however, the process of eye loss has only been reconstructed in a few cases.
Tim Wollesen +2 more
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