Results 151 to 160 of about 593 (181)
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HELMINTH PARASITES OF THE TROPICAL GAR, ATRACTOSTEUS TROPICUS GILL, FROM TABASCO, MEXICO
Journal of Parasitology, 2004A 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 +6 more
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Digestive enzymatic activity on Tropical gar (Atractosteus tropicus) larvae fed different diets
Fish Physiology and Biochemistry, 2011Digestive 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 +3 more
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Trypsin gene expression in adults and larvae of tropical gar Atractosteus tropicus
Fish Physiology and Biochemistry, 2019Trypsin 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 +8 more
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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 +5 more
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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 +5 more
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2022
Aquatic hypoxia is both a naturally-occurring and anthropogenically-generated event. Fish species have evolved different adaptations to cope with hypoxic environments, including gill modifications and air breathing. However, little is known about the molecular mechanisms involved in the respiration of embryonic and larval fishes during critical windows
Gil, Martínez-Bautista +7 more
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Aquatic hypoxia is both a naturally-occurring and anthropogenically-generated event. Fish species have evolved different adaptations to cope with hypoxic environments, including gill modifications and air breathing. However, little is known about the molecular mechanisms involved in the respiration of embryonic and larval fishes during critical windows
Gil, Martínez-Bautista +7 more
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General and Comparative Endocrinology, 2020
The Holostei group occupies a critical phylogenetic position as the sister group of the Teleostei. However, little is known about holostean pituitary anatomy or brain distribution of important reproductive neuropeptides, such as the gonadotropin-inhibitory hormone (GnIH).
Beriotto, Agustina Carla +7 more
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The Holostei group occupies a critical phylogenetic position as the sister group of the Teleostei. However, little is known about holostean pituitary anatomy or brain distribution of important reproductive neuropeptides, such as the gonadotropin-inhibitory hormone (GnIH).
Beriotto, Agustina Carla +7 more
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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 +9 more
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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 +9 more
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Capacitación para Aprovechamiento del Pejelagarto (Atractosteus tropicus) en Centro, Tabasco
— Se realizó un diagnóstico para identificar las variables que se consideraron para diseñar un programa de capacitaciónpara las comunidades de Tabasco (Ismate y Chilapilla 2da sección, Acachapan y Colmena 4ta sección y Aztlán 5ta secciónPalomillal) para aprovechamiento del pejelagarto (Atractosteus tropicus). La metodología utilizada fue tres visitas aOropeza Tosca, Diana Rubí +4 more
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Conservation genetics of the tropical gar (Atractosteus tropicus, Lepisosteidae)
Conservation Genetics, 2023Maura Palacios Mejia +10 more
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