Results 21 to 30 of about 238 (123)

The dental system of †Kazanichthys viatkensis (Actinopterygii, Acrolepididae) from the middle Permian of European Russia: palaeobiological and palaeoecological inferences

open access: yesPapers in Palaeontology, Volume 9, Issue 4, July/August 2023., 2023
Abstract Among ray‐finned fishes (Actinopterygii), the crushing, durophagous feeding strategy first evolved in the early Carboniferous period, with the †Eurynotiformes possessing dentitions with single layers of partially to fully fused blunt teeth.
Aleksandr S. Bakaev   +2 more
wiley   +1 more source

Uncovering the promiscuous activity of IL‐6 proteins: A multi‐dimensional analysis of phylogeny, classification and residue conservation

open access: yesProtein Science, Volume 31, Issue 11, November 2022., 2022
Abstract The IL‐6 family of cytokines, known for their pleiotropic behavior, share binding to the gp130 receptor for signal transduction with the necessity to bind other receptors. Leukemia inhibitory factor receptor is triggered by the IL‐6 family proteins: leukemia inhibitory factor (LIF), oncostatin‐M (OSM), cardiotrophin‐1 (CT‐1), ciliary ...
André da Costa   +3 more
wiley   +1 more source

Phylogeny and evolutionary history of the amniote egg

open access: yesJournal of Morphology, Volume 282, Issue 7, Page 1080-1122, July 2021., 2021
We review morphological features of the amniote egg and embryos in a large comparative phylogenetic framework, including all major clades of extant vertebrates. We discuss 40 characters that are relevant for an analysis of the evolutionary history of the vertebrate egg. Special attention is given to the morphology of the cellular yolk sac, the eggshell,
J. Matthias Starck   +2 more
wiley   +1 more source

Determination of optimal prey for rearing tropical gar Atractosteus tropicus (Lepisosteiformes: Lepisosteidae)

open access: yesRevista de Biología Tropical, 2018
Larval feeding studies of both ornamental and consumable fish species are important for formulating successful management, and culture strategies for conservation purposes. In the present study, we evaluated prey selectivity for the tropical gar Atractosteus tropicus in the larval stage (first 8 weeks) using the zooplankton Artemia fransiscana, Daphnia
Luis Humberto Escalera-Vázquez   +4 more
openaire   +5 more sources

STUDIES ON PYCNODONT FISHES (I): EVALUATION OF THEIR PHYLOGENETIC POSITION AMONG ACTINOPTERYGIANS

open access: yesRivista Italiana di Paleontologia e Stratigrafia, 2015
One of the main pending, unsolved problems concerning the study of the pycnodont fishes is their phylogenetic relationships with other major actinopterygian groups.
FRANCISCO JOSÉ POYATO-ARIZA
doaj   +1 more source

Evidencia de pobre diversidad genética del manjuarí (Atractosteus tristoechus)

open access: yesRevista de Investigaciones Marinas, 2023
El manjuarí (Atractosteus tristoechus) es un pez de agua dulce endémico de Cuba. Entre los Lepisosteiformes, esta especie es una de las más amenazadas y ocupa la menor área de distribución natural.
Gabriela Ulmo-Díaz   +5 more
doaj  

A new Lepisosteiformes (Actinopterygii: Ginglymodi) from the Early Cretaceous of Laos and Thailand, SE Asia

open access: yesJournal of Systematic Palaeontology, 2018
A new genus and new species of ginglymodian is described from the Aptian Grès supérieurs Formation of the Savannakhet Basin, Laos (Lao People's Democratic Republic), found at the Ban Lamthouay locality. The fish is known from a single isolated head, which shows enough diagnostic characters to characterize a new taxon.
Cavin, Lionel   +6 more
openaire   +2 more sources

Early evolution of the gular musculature and its innervation in ray‐finned fishes

open access: yesThe Anatomical Record, EarlyView.
Abstract Gular muscles are an important but often overlooked component of cranial anatomy in bony fishes. They are located on the ventral surface of the head and are derived from the mandibular and hyoid arches. We present a comprehensive review of the gular musculature and its innervation across early diverging actinopterygian lineages. By integrating
Aléssio Datovo   +4 more
wiley   +1 more source

[Histology of reproductive cycle of tropical gar Atractosteus tropicus females (Lepisosteiformes: Lepisosteidae) in Tabasco, Mexico].

open access: yesRevista de biologia tropical, 2013
In Southeast Mexico, A. tropicus is a species with great ecological, economic, cultural and aquaculture value, however wild populations have diminished due to diverse anthropological causes. The objective of this study was to characterize the reproductive cycle of A.
Otilio, Méndez-Marin   +4 more
openaire   +2 more sources

Dental development in the tropical gar (Atractosteus tropicus) and the evolution of vertebrate dentitions

open access: yesDevelopmental Dynamics, EarlyView.
Abstract Background Dentitions have diversified enormously during vertebrate evolution, involving reductions, modifications, or allocations to prey seizing and processing regions. A combination of ancient and novel features related to dental and oropharyngeal apparatuses is found in extant lineages of non‐teleost fishes, such as the gars.
Anna Pospisilova   +4 more
wiley   +1 more source

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