Seasonal changes in feeding rhythm ofMeriones hurrianaein the Indian desert

1984 ◽  
Vol 15 (2) ◽  
pp. 133-138
Author(s):  
Ranjan Advani ◽  
Mohamad Idris ◽  
Ishwar Prakash
Keyword(s):  
Seasonal Changes ◽  
Indian Desert ◽  
Feeding Rhythm

Food intake, feeding rhythm, and body mass regulation in Svalbard rock ptarmigan

1986 ◽  
Vol 251 (2) ◽  
pp. R264-R267 ◽  
Author(s):  
K. A. Stokkan ◽  
A. Mortensen ◽  
A. S. Blix
Keyword(s):  
Locomotor Activity ◽  
Food Intake ◽  
Body Mass ◽  
Seasonal Changes ◽  
Feeding Activity ◽  
Light Period ◽  
Rock Ptarmigan ◽  
Natural Conditions ◽  
Body Mass Regulation ◽  
Feeding Rhythm

Food intake (FI), feeding activity (FA), and body mass (BM) were recorded continuously throughout a 13-mo period in Svalbard rock ptarmigan kept under natural conditions of light and ambient temperature at Svalbard (79 degrees N). FI was persistently high from March until August, including the period when daylight is continuous, whereas it was low from November until January, when it is permanently dark. From August until November, BM doubled, while FI dropped to one-third. BM fell rapidly from mid-November until April despite a doubling of FI from February until March. From August until mid-November and from February until mid-April FA occurred mainly during the light period of the day. From late November until February and from mid-April until August intermittent FA occurred continuously. It is suggested that the seasonal changes in BM are not determined by FI alone but depend heavily on seasonal changes in locomotor activity as reflected in FA.

Circadian Rhythm in Feeding Behavior of Daphnia dentifera

2021 ◽  
pp. 074873042110544
Author(s):  
Alaina C. Pfenning-Butterworth ◽  
Kristina Amato ◽  
Clayton E. Cressler
Keyword(s):  
Life History ◽  
Circadian Rhythm ◽  
Feeding Behavior ◽  
Seasonal Changes ◽  
Diel Vertical Migration ◽  
Life History Strategy ◽  
Physiological Processes ◽  
Feeding Rhythm ◽  
Starvation Risk ◽  
Daphnia Dentifera

Circadian rhythms enable organisms to mediate their molecular and physiological processes with changes in their environment. Although feeding behavior directly affects within-organism processes, there are few examples of a circadian rhythm in this key behavior. Here, we show that Daphnia have a nocturnal circadian rhythm in feeding behavior that corresponds with their diel vertical migration (DVM), an important life history strategy for predator and UV avoidance. In addition, this feeding rhythm appears to be temperature compensated, which suggests that feeding behavior is robust to seasonal changes in water temperature. A circadian rhythm in feeding behavior can impact energetically demanding processes like metabolism and immunity, which may have drastic effects on susceptibility to disease, starvation risk, and ultimately, fitness.

Spreading the Word: Seasonal Changes Mean New Opportunities for Media Coverage

ASHA Leader ◽  
2013 ◽  
Vol 18 (7) ◽  
Keyword(s):  
Media Coverage ◽  
Seasonal Changes ◽  
Swimming Pools

Summer kicking into high gear conjures images of swimming pools and barbeques. But before you book your beach house for the weekend, think about what the changing seasons can mean for you professionally.

Seasonal changes in a ultraviolet structural colour signal in blue tits, Parus caeruleus

2002 ◽  
Vol 76 (2) ◽  
pp. 237-245 ◽  
Author(s):  
JONAS ORNBORG ◽  
STAFFAN ANDERSSON ◽  
SIMON C. GRIFFITH ◽  
BEN C. SHELDON
Keyword(s):  
Seasonal Changes ◽  
Parus Caeruleus ◽  
Structural Colour ◽  
Blue Tits ◽  
Colour Signal

Seasonal changes in nitrogen fractions of Pachysandra terminalis, a forest evergreen chamaephyte

1990 ◽  
Vol 79 (1) ◽  
pp. 7-14 ◽  
Author(s):  
Fumio Yoshie ◽  
Hirohito Arai ◽  
Hideaki Nakashima ◽  
Shoichi Kawano
Keyword(s):  
Seasonal Changes ◽  
Nitrogen Fractions

Seasonal changes in phytoplankton community structure in a bioluminescent lagoon, St. Croix, US Virgin Islands

2018 ◽  
Vol 81 (2) ◽  
pp. 109-124 ◽  
Author(s):  
JL Pinckney ◽  
C Tomas ◽  
DI Greenfield ◽  
K Reale-Munroe ◽  
B Castillo ◽  
...  
Keyword(s):  
Community Structure ◽  
Seasonal Changes ◽  
Phytoplankton Community ◽  
Virgin Islands ◽  
Phytoplankton Community Structure ◽  
Us Virgin Islands
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