Results 11 to 20 of about 1,330 (132)

Corticosteroid and progesterone transactivation of mineralocorticoid receptors from Amur sturgeon and tropical gar [PDF]

open access: yesBiochemical Journal, 2016
The response to a panel of steroids by the mineralocorticoid receptor (MR) from Amur sturgeon and tropical gar, two basal ray-finned fish, expressed in HEK293 cells was investigated. Half-maximal responses (EC50s) for transcriptional activation of sturgeon MR by 11-deoxycorticosterone, corticosterone, 11-deoxycortisol, cortisol and aldosterone, and ...
Sugimoto, Akira   +5 more
openaire   +4 more sources

Use of Potato Starch in Diets of Tropical Gar (Atractosteus tropicus, Gill 1863) Larvae [PDF]

open access: yesFishes, 2017
Tropical gar, Atractosteus tropicus, is a carnivorous fish species from Southern México with high value and acceptance in local markets. Therefore, the present study aims to spare proteins in diets for larviculture of this species. An experiment was performed using three different experimental diets with increasing carbohydrate levels based on potato ...
Carlos Frías-Quintana   +6 more
openaire   +3 more sources

Larval Development in Tropical Gar (Atractosteus tropicus) Is Dependent on the Embryonic Thermal Regime: Ecological Implications under a Climate Change Context

open access: yesFishes, 2022
In ectotherm species, environmental temperature plays a key role in development, growth, and survival. Thus, determining how temperature affects fish populations is of utmost importance to accurately predict the risk of climate change over fisheries and ...
Simrith E. Cordova-de la Cruz   +7 more
doaj   +1 more source

Inclusion of Mannan-Oligosaccharides in Diets for Tropical Gar Atractosteus tropicus Larvae: Effects on Growth, Digestive Enzymes, and Expression of Intestinal Barrier Genes

open access: yesFishes, 2022
Mannan-oligosaccharides (MOS) are non-digestible carbohydrates, and their use in aquaculture as prebiotics is well documented. The objective of this work was to test whether MOS supplemented in the diet of A.
Claudia I. Maytorena-Verdugo   +5 more
doaj   +1 more source

Gut Microbiome Analysis In Adult Tropical Gars (Atractosteus tropicus) [PDF]

open access: yes, 2019
AbstractTropical gar (Atractosteus tropicus), is freshwater and estuarine fish that has inhabited the Earth since the Mesozoic era, undergoing limited physiological variation ever since. This omnivorous fish is endemic to southern Mexico and part of Central America.
Méndez-Pérez, Roberto   +12 more
openaire   +1 more source

Survival, Growth, and Development in the Early Stages of the Tropical Gar Atractosteus tropicus: Developmental Critical Windows and the Influence of Temperature, Salinity, and Oxygen Availability

open access: yesFishes, 2021
Alterations in fish developmental trajectories occur in response to genetic and environmental changes, especially during sensitive periods of development (critical windows).
Gil Martínez   +5 more
doaj   +1 more source

Developmental cardiorespiratory physiology of the air-breathing tropical gar,Atractosteus tropicus [PDF]

open access: yesAmerican Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2016
The physiological transition to aerial breathing in larval air-breathing fishes is poorly understood. We investigated gill ventilation frequency ( fG), heart rate ( fH), and air breathing frequency ( fAB) as a function of development, activity, hypoxia, and temperature in embryos/larvae from day (D) 2.5 to D30 posthatch of the tropical gar ...
Warren W, Burggren   +6 more
openaire   +2 more sources

Bioeconomic profitability analysis of tropical gar (Atractosteus tropicus) grow out using two commercial feeds

open access: yesLatin American Journal of Aquatic Research, 2019
Tropical gar ( Atractosteus tropicus ) aquaculture is a potential economic activity in southeast Mexico. This study analyzed the economic profitability of tropical gar grow-out using two commercial feeds (Silver Cup ® and Super ® ). The last one was designed based on the digestive physiology of the species. The experiment was conducted in six concrete
Palma-Cancino, David J.   +6 more
openaire   +5 more sources

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

open access: yesCheck 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   +4 more
doaj   +3 more sources

Quality Evaluation of Reference Gene Expression on Different Tissues in Adults of Tropical Gar Atractosteus tropicus

open access: yesPakistan Journal of Zoology, 2021
Tropical gar (Atractosteus tropicus) is an ancestral subtropical fish species in southeastern Mexico, which has great potential as a model species for physiological, biomedical and genomic studies. The quantification of gene expression through RT-qPCR is one of the most commonly used techniques, due to its precision, sensitivity and high performance ...
Luis Daniel Jiménez Martínez   +8 more
openaire   +1 more source

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