Results 41 to 50 of about 238 (123)
Darwin, Haeckel, and the “Mikluskan gas organ theory”
Developmental Dynamics, Volume 253, Issue 4, Page 370-389, April 2024.Abstract A previously unknown reference to the Russian ethnologist, biologist, and traveler Nikolai N. Miklucho‐Maclay (1846–1888) was discovered in correspondence between Charles Darwin (1809–1882) and Ernst Haeckel (1834–1919). This reference has remained unknown to science, even to Miklucho‐Maclay's biographers, probably because Darwin used the ...
Ingmar Werneburg +2 more
wiley +1 more source
Global introductions and environmental impacts of freshwater megafish
Global Change Biology, Volume 30, Issue 4, April 2024.Of the 134 extant freshwater megafish species, 46% have been introduced outside of their native ranges. Over 50% of the alien megafish species with sufficient data to evaluate the severity of their environmental impacts have caused population declines or even extirpations of native species.
Xing Chen +4 more
wiley +1 more source
Erratum to: “First Finding of Gar Atractosteus sp. (Actinopterygii, Lepisosteiformes, Lepisosteidae) in the Caspian Sea near the Coast of Turkmenistan” [PDF]
Russian Journal of Biological Invasions, 2011 Information on the first finding of gar Atractosteus sp. (Actinopterygii, Lepisosteiformes, Lepisosteidae) in the Caspian Sea near the coast of Turkmenistan is given. Species of the caught individual was not identified precisely; however, it is an alligator gar Atractosteus spatula Lacepede, 1803.
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Revista de Biología Tropical, 2009 El cariotipo del pejelagarto Atractosteus tropicus se describe por medio de tinción Giemsa de 295 preparaciones cromosómicas en mitosis a partir de 120 larvas y 15 adultos (5 hembras y diez machos) de la población que habita en Tabasco, sureste de México.
Lenin Arias-Rodríguez +3 more
doaj
Revista de biologia tropical, 2010 The karyotype of the tropical gar Atractosteus tropicus is described from conventional Giemsa-staining of 295 mitotic chromosome slides from 120 larvae and 15 adults (five females and ten males) from Tabasco, southern of Mexico. The diploid number 2n = 56 chromosomes was calculated (73 spreads from 206 larval and 208 adult metaphases).
Lenin, Arias-Rodríguez +3 more
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Revista de biologia tropical, 2016 A. tropicus tiene un papel ecológico importante, como regulador de otras poblaciones de peces, en los cuerpos de agua de México, pero sus poblaciones silvestres se reducen. Una alternativa de conservación es el cultivo, el cual requiere caracterizar el ciclo reproductivo por medio del estudio de estructuras germinales y somáticas de los testículos ...
Otilio Méndez-Marin +4 more
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Jurnal Penelitian Pendidikan IPAThe Alligator gar, Atractosteus spatula (Lacepède, 1803), is a high-predatory fish native to North America. In 2020, two specimens were captured as a new species in the public waters of Klawing River, Central Java, Indonesia at 7°'19’.27"S 109°20'10"E. Therefore, this study aims to describe the meristic and morphometric features of Atractosteus spatula
Pramono, Taufik Budhi +4 more
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Prostaglandin F2α drives female pheromone signaling in cichlids, revealing a basis for evolutionary divergence in olfactory signaling. [PDF]
Proc Natl Acad Sci U S A, 2023 Li CY +3 more
europepmc +1 more source
A young parasite in an old fish host: A new genus for proteocephalid tapeworms (Cestoda) of bowfin (Amia calva) (Holostei: Amiiformes), and a revised list of its cestodes. [PDF]
Int J Parasitol Parasites Wildl, 2022 Scholz T, Choudhury A, McAllister CT.
europepmc +1 more source
PalZAbstractThe Lower Jurassic (lower Toarcian) Grimmen Formation (formerly known as "Green Series") of Mecklenburg and Western Pomerania (Northeast Germany) yielded two articulated anterior skeletons of fossil fish, which represent a new lepisosteiform genus and species: Mengius acutidens gen. et sp. nov. The new taxon is described.
Detlev Thies +2 more
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