Trichlorfon is effective against Dawestrema cycloancistrium and does not alter the physiological parameters of arapaima ( Arapaima gigas ): A large Neotropical fish from the Amazon

2021 ◽  
Author(s):  
Matheus Gomes da Cruz ◽  
Gabriela Tomas Jerônimo ◽  
Sunique Poá Cordeiro Bentes ◽  
Ligia Uribe Gonçalves
Keyword(s):  
Physiological Parameters ◽  
Neotropical Fish ◽  
Arapaima Gigas

scholarly journals Effect of density of fingerling and juvenile pirarucu during transportation on water quality and physiological parameters

2020 ◽  
Vol 50 (3) ◽  
pp. 223-231
Author(s):  
Adriana Ferreira LIMA ◽  
Hyago Jovane Borges de OLIVEIRA ◽  
André Silvério PEREIRA ◽  
Silmara Sanae SAKAMOTO
Keyword(s):  
Carbon Dioxide ◽  
Water Quality ◽  
Dissolved Oxygen ◽  
Recovery Period ◽  
Stocking Density ◽  
Quality Parameters ◽  
Physiological Parameters ◽  
Plastic Bags ◽  
Arapaima Gigas ◽  
Unionized Ammonia

ABSTRACT We assessed the effect of stocking density on physiological parameters (blood lactate, glucose, cortisol, hematocrit), water quality (temperature, dissolved oxygen, pH, unionized ammonia, carbon dioxide), and survival during the transportation of fingerling (24.5 ± 4.7 g) and juvenile (615.8 ± 122.2 g) pirarucu (Arapaima gigas) for six hours in plastic bags. The tested densities were 65, 80, 95, 110 and 125 g L-1 for fingerlings, and 50, 80, 110, 140 and 170 g L-1 for juveniles (three replicates each). Parameters were measured prior to and immediately after transportation, and at 24 and 96 hours recovery after transportation. No mortality was observed, except for fingerlings (< 3%) at densities of 110 and 125 g L-1 during recovery. All the water quality parameters were significantly altered after the transportation of fingerlings and juveniles. Water temperature, dissolved oxygen, carbon dioxide and unionized ammonia increased, but pH decreased. Only carbon dioxide and unionized ammonia differed among densities. Cortisol levels did not increase over time, except for the juveniles at 170 g L-1, which still had high cortisol after 96 hours. Glucose significantly increased after transportation for all the treatments and returned to the initial values during the recovery period. Conversely, the lactate values were still high after 96 hours. Hematocrit was assessed only for juveniles and was significantly lower after transportation. We conclude that fingerling and juvenile pirarucu can be safely transported at densities up to 95 g L-1 and 140 g L-1, respectively.

scholarly journals Effect of dietary taurine supplementation on the growth and blood physiological parameters of juvenile pirarucu

2020 ◽  
Vol 50 (4) ◽  
pp. 289-294
Author(s):  
Ana Paula Oeda RODRIGUES ◽  
Marcello Cappio Nunes SILVA ◽  
Emiliano Salvatore BERETTA ◽  
Flávio Augusto Leão da FONSECA ◽  
Giuliana PARISI ◽  
...  
Keyword(s):  
Fish Species ◽  
Feed Efficiency ◽  
Basal Diet ◽  
Physiological Parameters ◽  
Fish Growth ◽  
Feed Consumption ◽  
Taurine Supplementation ◽  
Vegetable Proteins ◽  
Commercial Feed ◽  
Arapaima Gigas

ABSTRACT For some fish species, dietary taurine supplementation has been proven necessary in feeds with considerable utilization of vegetable proteins to substitute fishmeal. Pirarucu, Arapaima gigas feeds mainly on taurine-rich animal items in nature, therefore this study aimed to evaluate the effect of dietary taurine supplementation (0, 0.5, 1, 1.5 and 3%) on the growth and blood physiological parameters of juvenile pirarucu. A commercial feed was utilized as the basal diet for the experimental diets. Three hundred fish (20.8 ± 2.3 g) were randomly distributed in 15 tanks and fed for 28 days. At the end of the trial, dietary taurine supplementation did not affect fish growth, feed consumption and feed efficiency. The original amounts of taurine (0.18%) and methionine (1.13%) in the commercial feed (0% taurine diet) apparently sufficed to promote adequate pirarucu growth, with no variation noted in the main blood physiological parameters. Further studies to assess whether taurine is conditionally essential for the pirarucu fed methionine-deficient diets are needed to elucidate the functionality of this nutrient for the studied species.

First-Person Experiments in Thinking

2018 ◽  
Vol 23 (3) ◽  
pp. 189-205 ◽  
Author(s):  
Renatus Ziegler ◽  
Ulrich Weger
Keyword(s):  
Physiological Parameters ◽  
The Self ◽  
First Person ◽  
Psychological Phenomena ◽  
Third Person ◽  
Current Article ◽  
Thinking Process ◽  
Mental Contents

Abstract. In psychology, thinking is typically studied in terms of a range of behavioral or physiological parameters, focusing, for instance, on the mental contents or the neuronal correlates of the thinking process proper. In the current article, by contrast, we seek to complement this approach with an exploration into the experiential or inner dimensions of thinking. These are subtle and elusive and hence easily escape a mode of inquiry that focuses on externally measurable outcomes. We illustrate how a sufficiently trained introspective approach can become a radar for facets of thinking that have found hardly any recognition in the literature so far. We consider this an important complement to third-person research because these introspective observations not only allow for new insights into the nature of thinking proper but also cast other psychological phenomena in a new light, for instance, attention and the self. We outline and discuss our findings and also present a roadmap for the reader interested in studying these phenomena in detail.

Effect of water shortage on six potato genotypes in the highlands of Bolivia (II): water relations, physiological parameters

Agronomie ◽  
2003 ◽  
Vol 23 (2) ◽  
pp. 181-190 ◽  
Author(s):  
Christophe Tourneux ◽  
Andr� Devaux ◽  
Maria Ren� Camacho ◽  
Pablo Mamani ◽  
Jean-Fran�ois Ledent
Keyword(s):  
Water Relations ◽  
Water Shortage ◽  
Physiological Parameters ◽  
Effect Of Water

Device for Monitoring Physiological Parameters of the Employee during the Work Process

2018 ◽  
pp. 66-70
Author(s):  
V.M. Panarin ◽  
◽  
A.A. Maslova ◽  
K.V. Grishakov ◽  
◽  
...  
Keyword(s):  
Physiological Parameters ◽  
Work Process
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