Results 21 to 30 of about 657 (149)
Sexual dimorphism in the Arachnid orders. [PDF]
PeerJ, 2018 Sexual differences in size and shape are common across the animal kingdom. The study of sexual dimorphism (SD) can provide insight into the sexual- and natural-selection pressures experienced by males and females in different species.
McLean CJ, Garwood RJ, Brassey CA.
europepmc +4 more sources
Fine structure of the ovary of Schizomus palaciosi (Arachnida: Schizomida)
Soil Organisms, 2023 The ovary of Schizomus palaciosi is an unpaired structure located in the medioventral opisthosoma. It consists of a flat tube with compressed lumen. The wall of the ovarian tube is composed of a monolayer of epithelial cells and muscle cells.
Gerd Alberti, José G. Palacios-Vargas
doaj +1 more source
Comparative microscopic anatomy of Schizomida – 2. The rostrosoma and the pharyngeal suction pump [PDF]
Arthropod Structure & DevelopmentThis paper tests hypotheses of independent parallel evolution of the rostrosoma among euchelicerate taxa by analyzing the microscopic anatomy and histology of the rostrosoma of Uropygi (Schizomida and Thelyphonida) and comparing it with the morphology of
Starck, J. Matthias
core +4 more sources
The "elongate chelicera problem": A virtual approach in an extinct pterygotid sea scorpion from a 3D kinematic point of view. [PDF]
Ecol EvolHow pterygotid sea scorpions used their tripartite elongate cheliceres to get prey items close to the mouth region remains a conundrum. We applied four different 3D kinematic settings with regard to insertion and orientation of the cheliceres to examine the most likely way this was realized.
Schmidt M, Melzer RR.
europepmc +2 more sources
Gene and Genome Duplication in Spiders. [PDF]
J Exp Zool B Mol Dev EvolIn chelicerates whole genome duplications (WGDs) were identified in distinct groups. While there is evidence that Xiphosurans/horseshoe crabs had three rounds of WGD and arachnopulmonates (e.g. spiders and scorpions) had one WGD, in many other arachnid groups no WGD was identified.
Munegowda C +3 more
europepmc +2 more sources
First record of Stenochrus portoricensis Chamberlin, 1922 (Arachnida: Schizomida: Hubbardiidae) for the Pernambuco state, Brazil [PDF]
Brazilian Journal of BiologyAM de Souza, AFA Lira
doaj +2 more sources
The Taxonomic Status of “Schizomus sawadai” (Schizomida: Schizomidae)
Acta Arachnologica, 1975 According to ROWLAND'S treatment (1972), Schizomus sawadai proposed in our previous paper should be referred to as Trithyreus sawadai hereafter.
Koichi SEKIGUCHI, Tsukané YAMASAKI
+7 more sources
Rapid detection of subterranean fauna from passive sampling of groundwater eDNA
Environmental DNA, Volume 5, Issue 6, Page 1706-1719, November 2023., 2023 Groundwater is an essential source of freshwater that supports surface ecosystems as well as organisms adapted to living underground. In this study we compared groundwater environmental DNA collected from active pump filtered water samples (AFGW), membranes submerged in water, and samples of morphologically identified animals collected at the same ...
Mieke van der Heyde +6 more
wiley +1 more source
Taking eDNA underground: Factors affecting eDNA detection of subterranean fauna in groundwater
Molecular Ecology Resources, Volume 23, Issue 6, Page 1257-1274, August 2023., 2023 Abstract Stygofauna are aquatic fauna that have evolved to live underground. The impacts of anthropogenic climate change, extraction and pollution on groundwater pose major threats to groundwater health, prompting the need for efficient and reliable means to detect and monitor stygofaunal communities.
Mieke van der Heyde +6 more
wiley +1 more source
Biological Reviews, Volume 98, Issue 3, Page 942-981, June 2023., 2023 ABSTRACT Acoustic and substrate‐borne vibrations are among the most widely used signalling modalities in animals. Arthropods display a staggering diversity of vibroacoustic organs generating acoustic sound and/or substrate‐borne vibrations, and are fundamental to our broader understanding of the evolution of animal signalling.
Leonidas‐Romanos Davranoglou +2 more
wiley +1 more source