Results 81 to 90 of about 41,711 (253)

Effects of human chorionic gonadotropin (HCG), toad and Clarias pituitary hormogenates on spawning in the catfish: Clarias Lazera (C. and V.) and Clarias anguillaris (Linne) [PDF]

open access: yes, 1985
Experiment on induced spawning of Clarias lazera and C. anguillaris using human chorionic gonadotropin (HCG) freshly prepared toad and Clarias pituitary hormogenates were carried out. Clarias pituitary hormogenates induced spawning in C.
Nwoko, C.U.
core  

A new endemic pearl cichlid of the ‘Geophagus’ brasiliensis (Cichliformes: Cichlidae) species group from the Piranga River, upper Doce River basin, southeastern Brazil

open access: yesJournal of Fish Biology, EarlyView.
Abstract A new species of pearl cichlid of the ‘Geophagus’ brasiliensis species group, endemic to the Piranga River, a major tributary of the upper Doce River basin in the state of Minas Gerais, southeastern Brazil, is herein described. The new species is delimited using an integrative approach, with molecular‐based species delimitation methods coupled
Cidimar E. de Assis   +7 more
wiley   +1 more source

Morpho-histological evaluation of young-of-the-year channel catfish (Ictalurus punctatus Raf., 1818) in extremely wintering conditions

open access: yesRibogospodarsʹka Nauka Ukraïni, 2017
Purpose. To investigate the effect of extreme low water temperatures on morphological and histological parameters of young-of-the-year (YOY) channel catfish (Clarias gariepinus (Burchell, 1822) during wintering at a warm water fish farm.
N. Yesipova, G. Schwartz, Y. Tuchapsky
doaj   +1 more source

Fatty Acid Profiles Distinguish Channel Catfish From Three Reaches of the Lower Kaskaskia River and its Floodplain Lakes [PDF]

open access: yes, 2016
Despite the increasing use of fatty acids (FAs) as biomarkers in aquatic food web analysis, little information is available regarding differences in FA profiles of fish among habitat types in river-floodplain ecosystems. The objectives of this study were
Trushenski, Jesse   +2 more
core   +1 more source

A new catfish species of Microcambeva Costa & Bockmann, 1994 (Siluriformes: Trichomycteridae) from southern Brazil, with a redescription of M. ribeirae Costa, Lima & Bizerril, 2004

open access: yesJournal of Fish Biology, EarlyView.
Abstract Among the few species of Microcambeva reported as occurring in more than one hydrographic basin, M. ribeirae has been previously listed from both the Ribeira de Iguape and the Guaraqueçaba basins. However, morphological and molecular analyses revealed that the specimens from Guaraqueçaba represent a new species, which is described in this ...
Lucas S. de Medeiros   +6 more
wiley   +1 more source

Dietary carbohydrate requirement of Heterobranchus longifilis [PDF]

open access: yes, 2005
The dietary carbohydrate requirement of Heterobranchus longifilis was evaluated in two separate experiments.In the first experiment, varying levels of carbohydrate ranging from 28, 24 to58 72% were fed to the fish of mean weight 1.83~c0.02g.
Ovie, S.I., Ovie, S.O., Sadiku, S.O.E.
core  

The emergence of pathogens on fish in an impacted estuary and the role of non‐native piranhas in a potential bacterial infectious outbreak

open access: yesJournal of Fish Biology, EarlyView.
Abstract As many tropical aquatic ecosystems worldwide, the Doce River estuary (DRE, southeastern Brazil) has increasingly faced multiple anthropogenic threats, including deforestation, mining, species introduction and water management. The 2015 collapse of the Fundão iron ore tailings dam severely changed water properties and increased heavy metal ...
Ryan Andrades   +10 more
wiley   +1 more source

Errors in Length-weight Parameters at FishBase.org [PDF]

open access: yes, 2011
Background: FishBase.org is an on-line database of fish related data that has been cited over 1500 times in the fisheries literature. Length-weight relationships in fish traditionally employ the model, W(L) = aL^b^, where L is length and W is weight ...
Ajaya Rana   +3 more
core   +1 more source

Reproductive plasticity and environmental tolerance of invasive African catfish (Clarias gariepinus) in a tropical Brazilian river

open access: yesJournal of Fish Biology, EarlyView.
Abstract Invasive alien species (IAS) pose a significant threat to biodiversity, particularly when endowed with high ecological and reproductive plasticity. The African catfish, Clarias gariepinus, is one such species, widely recognized for its ability to colonize and establish in diverse tropical ecosystems.
Michelle Torres Dumith   +1 more
wiley   +1 more source

Can Catfish Aquaculture be Profitable in Farm Ponds? [PDF]

open access: yes
Extensive channel catfish farming is a means of utilizing farm ponds for aquaculture production for either supplementary income of home use. This involves stocking catfish at sufficiently low densities such that a pond is able to assimilate excess feed ...
Dasgupta, Siddhartha   +2 more
core   +1 more source

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