Synchronization of daily rhythms of locomotor activity and plasma glucose, cortisol and thyroid hormones to feeding in Gilthead seabream (Sparus aurata) under a light–dark cycle

2010 ◽  
Vol 101 (1) ◽  
pp. 101-107 ◽  
Author(s):  
A. Montoya ◽  
J.F. López-Olmeda ◽  
A.B.S. Garayzar ◽  
F.J. Sánchez-Vázquez
Keyword(s):  
Locomotor Activity ◽  
Thyroid Hormones ◽  
Plasma Glucose ◽  
Sparus Aurata ◽  
Gilthead Seabream ◽  
Daily Rhythms ◽  
Dark Cycle

scholarly journals Effects of photoperiod on daily locomotor activity, energy expenditure, and feeding behavior in a seasonal mammal

2010 ◽  
Vol 298 (5) ◽  
pp. R1409-R1416 ◽  
Author(s):  
Amy Warner ◽  
Preeti H. Jethwa ◽  
Catherine A. Wyse ◽  
Helen I'Anson ◽  
John M. Brameld ◽  
...  
Keyword(s):  
Body Weight ◽  
Locomotor Activity ◽  
Energy Expenditure ◽  
Feeding Behavior ◽  
Heat Production ◽  
Prolonged Exposure ◽  
Dark Phase ◽  
Daily Rhythms ◽  
Dark Cycle ◽  
Activity Energy

The objective of this study was to determine whether the previously observed effects of photoperiod on body weight in Siberian hamsters were due to changes in the daily patterns of locomotor activity, energy expenditure, and/or feeding behavior. Adult males were monitored through a seasonal cycle using an automated comprehensive laboratory animal monitoring system (CLAMS). Exposure to a short-day photoperiod (SD; 8:16-h light-dark cycle) induced a significant decline in body weight, and oxygen consumption (V̇o2), carbon dioxide production (V̇co2), and heat production all decreased reaching a nadir by 16 wk of SD. Clear daily rhythms in locomotor activity, V̇o2, and V̇co2 were observed at the start of the study, but these all progressively diminished after prolonged exposure to SD. Rhythms in feeding behavior were also detected initially, reflecting an increase in meal frequency but not duration during the dark phase. This rhythm was lost by 8 wk of SD exposure such that food intake was relatively constant across dark and light phases. After 18 wk in SD, hamsters were transferred to a long-day photoperiod (LD; 16:8-h light-dark cycle), which induced significant weight gain. This was associated with an increase in energy intake within 2 wk, while V̇o2, V̇co2, and heat production all increased back to basal levels. Rhythmicity was reestablished within 4 wk of reexposure to long days. These results demonstrate that photoperiod impacts on body weight via complex changes in locomotor activity, energy expenditure, and feeding behavior, with a striking loss of daily rhythms during SD exposure.

scholarly journals Effect of Light–Dark Cycle on Skin Mucosal Immune Activities of Gilthead Seabream (Sparus aurata) and European Sea Bass (Dicentrarchus labrax)

Fishes ◽  
2020 ◽  
Vol 5 (1) ◽  
pp. 10
Author(s):  
Diana Ceballos-Francisco ◽  
Alberto Cuesta ◽  
María Ángeles Esteban
Keyword(s):  
Bactericidal Activity ◽  
Sparus Aurata ◽  
Dicentrarchus Labrax ◽  
Maximum Level ◽  
Sea Bass ◽  
Immunoglobulin M ◽  
Gilthead Seabream ◽  
Dark Cycle ◽  
European Sea Bass ◽  
Skin Mucus

Changes in different immune activities in the skin mucus of gilthead seabream (Sparus aurata L.) and European sea bass (Dicentrarchus labrax L.) specimens exposed to a constant light–dark photoperiod (12 h L:12 h D) were studied. Samples were collected at 08:00 (light on), 14:00, 20:00 (light off), 02:00, and again at 08:00 to determine immunoglobulin M (IgM) levels, several enzymes related to the immune system, and bactericidal activity. IgM levels were higher during the day in seabream and reached a minimum value at 20:00, but it was hardly affected in sea bass. No significant variations were recorded in the levels of protease and antiprotease. Peroxidase reached its maximum level in seabream at 02:00, the same time that it reached its minimum level in sea bass. Lysozyme showed little variation in seabream, but it was significantly lower at 14:00 than during the rest of the cycle in sea bass. Finally, different interspecific variations on bactericidal activity against Vibrio harveyi were recorded. The findings demonstrate that the immune parameters present in skin mucus of these important fish species are affected by the light–dark cycle and that there are substantial interspecies differences.

scholarly journals Feeding time synchronises daily rhythms of behaviour and digestive physiology in gilthead seabream (Sparus aurata)

Aquaculture ◽  
2010 ◽  
Vol 306 (1-4) ◽  
pp. 315-321 ◽  
Author(s):  
A. Montoya ◽  
J.F. López-Olmeda ◽  
M. Yúfera ◽  
M.J. Sánchez-Muros ◽  
F.J. Sánchez-Vázquez
Keyword(s):  
Sparus Aurata ◽  
Gilthead Seabream ◽  
Feeding Time ◽  
Digestive Physiology ◽  
Daily Rhythms

Different behavior of body temperature and total locomotor activity daily rhythms during light/dark cycle in stabledOryctolagus cuniculus

2015 ◽  
Vol 47 (1) ◽  
pp. 39-44 ◽  
Author(s):  
C. Giannetto ◽  
E. Giudice ◽  
F. Fazio ◽  
D. Alberghina ◽  
A. Assenza ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Body Temperature ◽  
Daily Rhythms ◽  
Dark Cycle

Daily rhythms of locomotor activity and the influence of a light and dark cycle on gut microbiota species in tambaqui (Colossoma macropomum)

2015 ◽  
Vol 47 (2) ◽  
pp. 183-190 ◽  
Author(s):  
R. Fortes-Silva ◽  
I.E. Oliveira ◽  
V.P. Vieira ◽  
E.U. Winkaler ◽  
B. Guerra-Santos ◽  
...  
Keyword(s):  
Locomotor Activity ◽  
Gut Microbiota ◽  
Daily Rhythms ◽  
Dark Cycle ◽  
Colossoma Macropomum

Daily rhythms of clock gene expression and feeding behavior during the larval development in gilthead seabream,Sparus aurata

2015 ◽  
Vol 32 (8) ◽  
pp. 1061-1074 ◽  
Author(s):  
José Antonio Mata-Sotres ◽  
Gonzalo Martínez-Rodríguez ◽  
Jaume Pérez-Sánchez ◽  
F. Javier Sánchez-Vázquez ◽  
Manuel Yúfera
Keyword(s):  
Gene Expression ◽  
Feeding Behavior ◽  
Larval Development ◽  
Clock Gene ◽  
Sparus Aurata ◽  
Gilthead Seabream ◽  
Daily Rhythms ◽  
Clock Gene Expression

Genetic parameters for quality traits by non-invasive methods and their G x E interactions in ocean cages and estuaries on gilthead seabream (Sparus aurata)

Aquaculture ◽  
2021 ◽  
Vol 537 ◽  
pp. 736462
Author(s):  
I. Elalfy ◽  
H.S. Shin ◽  
D. Negrín-Báez ◽  
A. Navarro ◽  
M.J. Zamorano ◽  
...  
Keyword(s):  
Genetic Parameters ◽  
Sparus Aurata ◽  
Gilthead Seabream ◽  
Quality Traits ◽  
Non Invasive
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