Results 11 to 20 of about 1,230 (177)
Interactions of Mucus Monosaccharides and the Epidermal Microbiome in Four Benthic Elasmobranchs. [PDF]
Environ Microbiol RepHere we collected mucus and microbes from the skin of Elasmobranchs to identify interactions between mucus and the microbial community. We identified key microbial genes involved in the metabolism of mucus carbohydrates in Elasmobranchs. ABSTRACT Epidermal mucus is a complicated mixture of macromolecules which acts as the first line of defence for ...
Kerr EN +8 more
europepmc +2 more sources
Sexual Size Dimorphism in Rays and Skates (Elasmobranchii: Batoidea). [PDF]
Ecol EvolABSTRACT Sexual size dimorphism (SSD) is a widely observed but poorly understood phenomenon in which male and female animals differ in body size (e.g., length or mass). Despite extensive research on the interspecific distribution of SSD across various lineages, the evolutionary drivers behind male‐biased and female‐biased SSD remain ...
Gayford JH +4 more
europepmc +4 more sources
A checklist of helminth parasites of Elasmobranchii in Mexico [PDF]
ZooKeys, 2016 A comprehensive and updated summary of the literature and unpublished records contained in scientific collections on the helminth parasites of the elasmobranchs from Mexico is herein presented for the first time. At present, the helminth fauna associated with Elasmobranchii recorded in Mexico is composed of 132 (110 named species and 22 not assigned to
Merlo-Serna, Aldo Iván +1 more
openaire +3 more sources
, 2021 Subclass ELASMOBRANCHII Bonaparte, 1838 REMARKS Fossils were only collected by surface picking around the archaeocete whale carcasses (protocetids and basilosaurids, see Gingerich & Zouhri 2015), and thus the majority of small to medium-sized sharks and rays remain currently unknown.Thousands of specimens were collected from several localities ...
Zouhri, Samir +9 more
openaire +2 more sources
Scientific Data, 2022 Measurement(s) Shark bite incidents Technology Type(s) survey Factor Type(s) none Sample Characteristic - Organism Elasmobranchii Sample Characteristic - Environment ocean Sample Characteristic - Location ...
Madeline Riley +7 more
doaj +1 more source
Ultimate Eocene (Priabonian) chondrichthyans (Holocephali, Elasmobranchii) of Antarctica [PDF]
Journal of Vertebrate Paleontology, 2016 The Eocene La Meseta Formation on Seymour Island, Antarctic Peninsula, is known for its remarkable wealth of fossil remains of chondrichthyans and teleosts. Chondrichthyans seemingly were dominant elements in the Antarctic Paleogene fish fauna, but decreased in abundance from middle to late Eocene, during which time remains of bony fishes increase ...
Kriwet, Jürgen +4 more
openaire +3 more sources
MesopTroph, a database of trophic parameters to study interactions in mesopelagic food webs
Scientific Data, 2022 Measurement(s) Gastric Content • stable isotope analysis • major and trace elements • energy density • Fatty Acid • trophic position • Diet Technology Type(s) digital curation • digital curation Sample Characteristic - Organism Actinopteri • Mammalia ...
Mónica A. Silva +13 more
doaj +1 more source
Bransonelliformes – a new order of the Xenacanthimorpha (Chondrichthyes, Elasmobranchii) [PDF]
Fossil Record – Mitteilungen aus dem Museum für Naturkunde, 2007 The order Bransonelliformes is erected for the genera <i>Bransonella</i> Harlton, 1933 and <i>Barbclabornia</i> Johnson, 2003 based on the distinct characters of an inverted "V"-nested pattern of ornamentation preliminary on the labial aspect at the tooth cusps, the presence of labial foramina, and the occasional occurrence of a
Hampe,O., Ivanov,A.
openaire +6 more sources
The mitogenomic phylogeny of the Elasmobranchii (Chondrichthyes)
Mitochondrial DNA Part A, 2017 Here we present a mitogenomic perspective on the evolution of sharks and rays, being a first glance on the complete mitochondrial history of such an old and diversified group of vertebrates. The Elasmobranchii is a diverse subclass of Chondrichthyes, or cartilaginous fish, with about 1200 species of ocean- and freshwater-dwelling fishes spread all over
Amaral, Cesar R. L. +4 more
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, 2023 Elasmobranchii Sauvage attribua à l’espèce Hybodus acutus Agassiz, 1836 une épine dorsale incomplète (Fig. 15A) et douze dents isolées dont il figura deux d’entre elles (Fig. 15 F-G). Cette espèce fut introduite par le paléoichtyologiste suisse Louis Agassiz (1836: vol. 3, pl. 10, fig. 4-6; 1837: vol. 3, 45) sur la base d’un fragment d’épine dorsale de
openaire +1 more source