Results 11 to 20 of about 238 (123)

Range extension of Tropical Gar, Atractosteus tropicus Gill, 1863 (Lepisosteiformes, Lepisosteidae), to the Yucatan Peninsula, Mexico [PDF]

Check List
The distribution of Atractosteus tropicus Gill,1863 is represented by three separate populations, which range from southeastern Mexico to Costa Rica. Herein, we document the first record of A.
Luis Fernando Del Moral-Flores, Armando T. Wakida-Kusunoki, Daniel Martínez-Martínez, Giovanni Alberto Anguiano-Lara, Joshep Heredy Galindo-Hernández   +4 more
doaj   +5 more sources

The first record of Scheenstia (Actinopterygii, Holostei) from the Late Cretaceous of Ukraine in the context of European occurrence of Mesozoic lepisosteiform fishes

Geo&Bio, 2019
Lepisosteiform fishes are represented in the fossil record of Europe from the Late Jurassic until the Miocene. Most of their remains were found in the western and central parts of the continent.
L. S. Kyselevych, O. M. Kovalchuk
doaj   +2 more sources

Atractosteus spatula (Actinopterygii: Lepisosteiformes: Lepisosteidae): A deliberate aquarium trade introduction incidence in the Shatt al-Arab River, Basrah, Iraq [PDF]

Acta Ichthyologica et Piscatoria, 2017
The first record of a single specimen of alligator gar, Atractosteus spatula (Lacepède, 1803), native to North America, is reported from the inland waters of Iraq.
F. Mutlak, L. Jawad, A. Al-Faisal
doaj   +5 more sources

Histología del ciclo reproductor de hembras del pejelagarto Atractosteus tropicus (Lepisosteiformes: Lepisosteidae) enTabasco, México

Revista de Biología Tropical, 2012
En el sureste de México A. tropicus es una especie de gran importancia ecológica, económica, cultural y para acuicultura, sin embargo, sus poblaciones silvestres han disminuido a causa de diversas actividades antropogénicas, por lo que se caracterizó el ...
Otilio Méndez-Marin, Arlette Amalia Hernández Franyutti, Carlos Alfonso Álvarez-González, Wilfrido Miguel Contreras-Sánchez, Mari Carmen Uribe Aranzábal   +4 more
doaj   +5 more sources

Histología del ciclo reproductor de hembras del pejelagarto Atractosteus tropicus (Lepisosteiformes: Lepisosteidae) enTabasco, México Histology of reproductive cycle of tropical gar Atractosteus tropicus females (Lepisosteiformes: Lepisosteidae) in Tabasco, Mexico.

Revista de Biología Tropical, 2012
En el sureste de México A. tropicus es una especie de gran importancia ecológica, económica, cultural y para acuicultura, sin embargo, sus poblaciones silvestres han disminuido a causa de diversas actividades antropogénicas, por lo que se caracterizó el ...
Otilio Méndez-Marin, Arlette Amalia Hernández Franyutti, Carlos Alfonso Álvarez-González, Wilfrido Miguel Contreras-Sánchez, Mari Carmen Uribe Aranzábal   +4 more
doaj   +1 more source

Skeletal development in the heterocercal caudal fin of spotted gar (lepisosteus oculatus) and other lepisosteiformes. [PDF]

Dev Dyn, 2018
Background: The caudal fin of actinopterygians experienced substantial morphological changes during evolution. In basal actinopterygians, the caudal fin skeleton supports an asymmetrical heterocercal caudal fin, while most teleosts have a symmetrical homocercal caudal fin.
Desvignes T, Carey A, Braasch I, Enright T, Postlethwait JH.   +4 more
europepmc   +4 more sources

Diet of the North American river otter (Lontra canadensis) in North Carolina using 2 methods

Wildlife Society Bulletin, Volume 47, Issue 4, December 2023., 2023
River otters (Lontra canadensis) are key predators in North Carolina's aquatic systems; however, they are often seen as competitors by trout fishermen and fish hatcheries. We conducted necropsies and analyzed the stomach contents using the standard observational methods and metabarcoding DNA analysis.
Charles W. Sanders II, Stephen F. Spear, Kristina Black, Colleen Olfenbuttel, Christopher S. DePerno   +4 more
wiley   +1 more source

The larval attachment organ of the bowfin Amia ocellicauda Richardson, 1836 (Amiiformes: Amiidae) and its phylogenetic significance

Journal of Fish Biology, Volume 103, Issue 6, Page 1300-1311, December 2023., 2023
Abstract Larval attachment organs (LAOs) are unicellular or multicellular organs that enable the larvae of many actinopterygian fishes to adhere to a substrate before yolk‐sac absorption and the free‐swimming stage. Bowfins (Amiiformes) exhibit a sizable LAO on the snout, which was first described in the late 19th and early 20th centuries.
Amanda K. Pinion, Ralf Britz, Kole M. Kubicek, Dustin S. Siegel, Kevin W. Conway   +4 more
wiley   +1 more source

The first Caipirasuchus (Mesoeucrocodylia, Notosuchia) from the Late Cretaceous of Minas Gerais, Brazil: new insights on sphagesaurid anatomy and taxonomy [PDF]

PeerJ, 2018
Field work conducted by the staff of the Centro de Pesquisas Paleontológicas Llewellyn Ivor Price of the Universidade Federal do Triângulo Mineiro since 2009 at Campina Verde municipality (MG) have resulted in the discovery of a diverse vertebrate fauna ...
Agustín G. Martinelli, Thiago S. Marinho, Fabiano V. Iori, Luiz Carlos B. Ribeiro   +3 more
doaj   +2 more sources

Distribution of the transcription factor islet‐1 in the central nervous system of nonteleost actinopterygian fish: Relationship with cholinergic and catecholaminergic systems

Journal of Comparative Neurology, Volume 531, Issue 11, Page 1126-1146, August 2023., 2023
Abstract Islet‐1 (Isl1) is one of the most conserved transcription factors in the evolution of vertebrates, due to its continuing involvement in such important functions as the differentiation of motoneurons, among other essential roles in cell fate in the forebrain.
Daniel Lozano, Nerea Moreno, Sara Jiménez, Adrián Chinarro, Ruth Morona, Jesús M. López   +5 more
wiley   +1 more source