The evolution, structure and function of the ray finned fish (Actinopterygii) glucocorticoid receptors [PDF]
General and Comparative Endocrinology, 2017 Basal ray-finned fish (Actinopterygii) possess a single glucocorticoid receptor (GR) and when compared to the lobe-finned vertebrate (Sarcopterygii) GR possess nine additional amino acids between the zinc-finger of the DNA binding domain. A whole genome duplication event which occurred between 320 and 350MYA in the teleost lineage following the split ...
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Fish remains (Elasmobranchii, Actinopterygii) from the Late Cretaceous of the Benue Trough, Nigeria [PDF]
Journal of African Earth Sciences, 2014 Selachian and ray-finned fish remains from various Late Cretaceous localities of Nigeria are described. Each locality has yielded only a very few specimens and the diversity is therefore very low. However, some taxa are recorded for the first time in Africa.
Vullo, Romain, Courville, Philippe
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Zoologia (Curitiba), 2010 Myxobolus franciscoi sp. nov. (Myxozoa: Myxosporea: Myxobolidae) is described from the "curimatá-pacú" fish, Prochilodus argenteus Spix & Agassiz, 1829 (Actinopterygii: Prochilodontidae) from the Upper São Francisco River, Brazil.
Jorge C. Eiras +2 more
doaj +1 more source
Update to the catalogue of South Australian freshwater fishes (Petromyzontida & Actinopterygii) [PDF]
Zootaxa, 2012 South Australia is a large Australian state (~1,000,000 km2) with diverse aquatic habitats spread across temperate to arid environments. The knowledge of freshwater fishes in this jurisdiction has advanced considerably since the last detailed catalogue of native and alien species was published in 2004 owing to significant survey and research effort ...
Hammer, M., Adams, M., Foster, R.
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Parasites & Vectors, 2020 Background Lake Tanganyika is considered a biodiversity hotspot with exceptional species richness and level of endemism. Given the global importance of the lake in the field of evolutionary biology, the understudied status of its parasite fauna is ...
Nikol Kmentová +7 more
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Toltrazuril (Baycox® vet.) in feed can reduce Ichthyophthirius multifiliis invasion of rainbow trout (Salmonidae) [PDF]
Acta Ichthyologica et Piscatoria, 2011 Various compounds have been applied for control of Ichthyophthirius multifiliis (commonly known as Ich) which is the parasitic pathogen, responsible for the white spot disease, in freshwater aquaculture worldwide. Available methods are based on
R.M. Jaafar, K. Buchmann
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Divergent Evolution of Progesterone and Mineralocorticoid Receptors in Terrestrial Vertebrates and Fish Influences Endocrine Disruption [PDF]
arXiv, 2021 There is much concern about disruption of endocrine physiology regulated by steroid hormones in humans, other terrestrial vertebrates and fish by industrial chemicals, such as bisphenol A, and pesticides, such as DDT. These endocrine-disrupting chemicals influence steroid-mediated physiology in humans and other vertebrates by competing with steroids ...
arxiv
Feeding behavior of the Amazonian Water Snake Helicops hagmanni Roux, 1910 (Reptilia: Squamata: Colubridae: Hydropsini) [PDF]
Boletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2008 The genus Helicops currently comprises 15 species, of which eleven occur in the Amazon Forest. H. hagmanni feeds on fishes and has nocturnal habits, but detailed data about its diet and behavioral ecology are scarce. Here, we report a H.
Marcelo José Sturaro +1 more
doaj
Benchmarking the discrimination power of commonly used markers and amplicons in marine fish (e)DNA (meta)barcoding [PDF]
Metabarcoding and MetagenomicsEnvironmental DNA (eDNA) metabarcoding is revolutionising the study of aquatic ecosystems, enabling high-throughput analysis of biodiversity with minimal disturbance.
João T. Fontes +4 more
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Optimal undulating swimming for a single fish-like body and for a pair of interacting swimmers [PDF]
, 2016 We establish through numerical simulation conditions for optimal undulatory propulsion for a single fish, and for a pair of hydrodynamically interacting fish, accounting for linear and angular recoil. We first employ systematic 2D simulations to identify conditions for minimal propulsive power of a self-propelled fish, and continue with targeted 3D ...
arxiv +1 more source