Results 141 to 150 of about 1,505 (162)

Digestive enzymatic activity on Tropical gar (Atractosteus tropicus) larvae fed different diets

Fish Physiology and Biochemistry, 2011
Digestive enzymatic activity and growth performance on tropical gar (Atractosteus tropicus) larvae fed Artemia nauplii (LF), frozen adult Artemia (AB), an artificial diet (AF) with 46% protein and 16% lipids and a starvation group (SG) from first feeding (5 days after hatching-5 DAH) to 34 DAH were studied.
CARLOS Aguilera, Roberto Mendoza
exaly   +3 more sources

Partial characterization of digestive proteases in tropical gar Atractosteus tropicus juveniles

Fish Physiology and Biochemistry, 2013
Tropical gar (Atractosteus tropicus) is an economically and socially important freshwater species from Southeastern Mexico, with a high aquaculture potential. With this in mind, the purpose of this study was to characterize the digestive proteases of tropical gar juveniles through biochemical and electrophoretic analyses.
Rocio Guerrero-Zárate, CARLOS Alfonso Álvarez-González, MIGUEL A Olvera-Novoa   +2 more
exaly   +3 more sources

The complete mitochondrial DNA of the tropical gar ( Atractosteus tropicus )

Mitochondrial DNA Part A, 2014
The mitogenome of the tropical gar, Atractosteus tropicus, (GeneBank accession number KJ531198) has a total length of 16,280 bp, and the arrangement consist of 13 protein-coding genes, 2 ribosomal RNA (rRNA) genes and 22 transfer RNA similar to other Lepisosteidae family mitogenomes.
Miguel A, Del Río-Portilla, Carmen E, Vargas-Peralta, Fabiola, Lafarga-De La Cruz, Lenin, Arias-Rodriguez, Rigoberto, Delgado-Vega, Carolina, Galván-Tirado, Francisco J, García-de-León   +6 more
openaire   +2 more sources

Expression of ion transport proteins and routine metabolism in juveniles of tropical gar (Atractosteus tropicus) exposed to ammonia

Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology, 2021
Tropical gar (Atractosteus tropicus) thrives in aquatic habitats with high levels of total nitrogen (TAN) and unionized ammonia (NH3). However, the tolerance of TAN and NH3, the excretion mechanisms involved, and the effects of these chemicals on routine metabolism are still unknown.
Sonia A, Aranda-Morales, Emyr S, Peña-Marín, Luis D, Jiménez-Martínez, Talhia, Martínez-Burguete, Gil, Martínez-Bautista, Carina S, Álvarez-Villagómez, Susana, De la Rosa-García, Susana, Camarillo-Coop, Rafael, Martínez-García, Laura T, Guzmán-Villanueva, Carlos A, Álvarez-González   +10 more
openaire   +2 more sources

HELMINTH PARASITES OF THE TROPICAL GAR, ATRACTOSTEUS TROPICUS GILL, FROM TABASCO, MEXICO

Journal of Parasitology, 2004
A total of 8 helminth species were recorded in an examination of 43 tropical gar, Atractosteus tropicus Gill, collected at the Pantanos de Centla Biosphere Reserve, Tabasco, Mexico. The parasite species included 1 adult trematode, 3 metacercariae, 1 cestode, 1 adult nematode, and 2 nematode larvae. Six of these 8 species were rare, with low prevalence (
Guillermo Salgado-Maldonado, František Moravec, Rogelio Aguilar-Aguilar   +2 more
exaly   +3 more sources

Trypsin gene expression in adults and larvae of tropical gar Atractosteus tropicus

Fish Physiology and Biochemistry, 2019
Trypsin gene (try) expression levels were quantified in different organs of wild and captive tropical gar (Atractosteus tropicus) adults, and changes in expression during initial ontogeny of the species were determined. RNA was extracted from the pancreas, and cDNA was synthesized and later amplified by endpoint PCR using oligonucleotides designed from
Kristal de M. Jesús-De la Cruz, Ángela Ávila-Fernández, Emyr Saúl Peña-Marín, Luis Daniel Jiménez-Martínez, Dariel Tovar-Ramírez, Rafael Martínez-García, Rocio Guerrero-Zárate, Gloria Gertrudys Asencio-Alcudia, Carlos Alfonso Alvarez-González   +8 more
openaire   +2 more sources

The larval attachment organ of the tropical gar Atractosteus tropicus Gill, 1863 (Lepisosteiformes: Lepisosteidae)

Journal of Fish Biology, 2021
AbstractLarval attachment organs (LAOs) are unicellular or multicellular organs that allow larvae to adhere to a substrate before yolk‐sac absorption and the free‐swimming stage. This study documents the LAO of tropical gar, Atractosteus tropicus, using a combination of scanning electron microscopy and light microscopy.
Amanda K. Pinion, Dustin S. Siegel, Ralf Britz, Rafael Martínez‐García, Carlos A. Álvarez‐González, Kevin W. Conway   +5 more
openaire   +2 more sources

Morphological and cardiac alterations after crude oil exposure in the early-life stages of the tropical gar (Atractosteus tropicus)

Environmental Science and Pollution Research, 2021
Fish development can be affected by environmental pollutants such as crude oil (anthropogenic or natural sources), causing alterations especially in cardiac function and morphology. Most such studies have focused on saltwater species, whereas studies in freshwater fishes are scant. The objective of the current study was to evaluate the effects of crude
Simrith E. Córdova-de la Cruz, Gil Martínez-Bautista, Emyr S. Peña-Marín, Rafael Martínez-García, Gabriel Núñez-Nogueira, Randy H. Adams, Warren W. Burggren, Carlos Alfonso Alvarez-González   +7 more
openaire   +2 more sources

Development of digestive tract and enzyme activities during the early ontogeny of the tropical gar Atractosteus tropicus

Fish Physiology and Biochemistry, 2015
Changes in digestive enzyme activity and histology were studied in Atractosteus tropicus embryos, larvae and juvenile periods. Alkaline protease, chymotrypsin, carboxypeptidase A, lipase and α-amylase were detected in all periods and gradually increased until reaching the maximum peak in juveniles; meanwhile, acid protease was first detected at 5 days ...
C A, Frías-Quintana, G, Márquez-Couturier, C A, Alvarez-González, D, Tovar-Ramírez, H, Nolasco-Soria, M A, Galaviz-Espinosa, R, Martínez-García, S, Camarillo-Coop, R, Martínez-Yañez, E, Gisbert   +9 more
openaire   +2 more sources

Attack behavior leading cannibalism in tropical gar (Atractosteus tropicus) larvae under different tank colors and shelter type

Aquaculture, 2023
Aggressivity expressed as cannibalism in fish larvae is a problem that limits the development of many species in aquaculture, therefore, understanding it and generating strategies to reduce its impact is important. This study described cannibalistic attacks behavior in Tropical gar (Atractosteus tropicus) larvae.
Sepúlveda-Quiroz, C. A., Alvarez-Villagomez, C. S., Mendoza-Porras, O., Peña-Marín, E. S., Maytorena-Verdugo, C. I., Pérez-Jiménez, G. M., Jesus-Contreras, R., Álvarez-González, C. A., Martínez-García, R.   +8 more
openaire   +3 more sources