Nocturnal foraging and activity by diurnal lizards: Six species of day geckos ( Phelsuma spp.) using the night‐light niche

2021 ◽  
Vol 46 (3) ◽  
pp. 501-506
Author(s):  
James Baxter‐Gilbert ◽  
Cláudia Baider ◽  
F.B. Vincent Florens ◽  
Oliver Hawlitschek ◽  
Ashwini V. Mohan ◽  
...  
Keyword(s):  
Nocturnal Foraging

Nocturnally constrained foraging of a lotic minnow (Rhinichthys cataractae)

1989 ◽  
Vol 67 (8) ◽  
pp. 2008-2012 ◽  
Author(s):  
Joseph M. Culp
Keyword(s):  
Seasonal Changes ◽  
Prey Availability ◽  
Diel Periodicity ◽  
Foraging Activity ◽  
Light Levels ◽  
Prey Composition ◽  
Rhinichthys Cataractae ◽  
Nocturnal Foraging ◽  
Gut Fullness ◽  
Foraging Pattern

Diel periodicity in foraging activity of the longnose dace (Rhinichthys cataractae) was determined by measuring dace activity over the stream bed, gut fullness, and the digestive state of prey items. Although most species of minnows are either diurnally or crepuscularly active, dace began foraging within 1 h after sunset with light levels near 10 lx and ceased before sunrise throughout the ice-free period. During the day few prey were taken as the dace remained under the shelter of stones. This nocturnal foraging pattern did not appear to be affected by spawning or seasonal changes in prey composition. Nocturnal foraging in dace is not likely a response to prey availability, but may be a response to avoid diel periods when salmonid competitors or visual predators are active.

Habitat and spatial requirements of the eastern barred bandicoot (Perameles gunnii) at Hamilton, Victoria

1994 ◽  
Vol 21 (4) ◽  
pp. 459 ◽  
Author(s):  
AC Dufty
Keyword(s):  
Structural Complexity ◽  
Home Ranges ◽  
Minimum Convex Polygon ◽  
Nest Sites ◽  
Artificial Materials ◽  
Nocturnal Foraging ◽  
The Mean ◽  
Optimal Habitat ◽  
Homogeneous Composition ◽  
Agricultural Areas

Perameles gunnii was greatly affected by the introduction of European agriculture to the volcanic plains in Victoria. At Hamilton, agricultural areas possessed little structural complexity and supported a fairly homogeneous composition of pasture species that were generally shorter than 100 mm because of heavy stock grazing. No P. gurznii were caught in agricultural areas at Hamilton. At the Hamilton Municipal Tip, most captures and nest sites occurred where food resources and structural complexity were greatest. Descriptions of 16 diurnal nest sites indicated that a range of natural and artificial materials was used for shelter, including fallen branches, sawn timber, cement culverts, galvanised iron, and scrap metal. Earthworms were most frequently observed in faecal and stomach material, while beetles and crickets were also common. Optimal habitat for P. gunnii was defined by high structural complexity and habitat heterogeneity. Older P. gunnii may usurp optimal habitat and force subordinate adult females into sub-optimal habitat. Associated with their occupation of optimal habitat, older P. gunnii may utilise smaller nocturnal foraging areas. Analysis of the movement of P. gunnii within the Hamilton Municipal Tip indicated that males occupied significantly larger nocturnal foraging areas than females. Mean female and male home ranges (defined by Minimum Convex Polygon analysis) were 1.6 ha (n = 13, range 0.02-5.9 ha) and 4 ha (n = 18, range 0.8-9.0 ha), respectively. Also, nocturnal foraging areas were analysed on the basis of pattern of use of an area, and these were referred to as utilisation distributions. The mean utilisation distributions (defined by Minimum Area v. Probability [0.95] analysis) for females and males were 0.64 ha (n = 13, range 0.01-4.7 ha) and 4.0 ha (n = 18, range 0.01-19.6 ha), respectively. Mean female and male observed range lengths were 173 m (tz = 26, range 0-364 m) and 249 m (n = 34, range 50430 m), respectively. Mean ( +/-s.e ) observed range length (214+/-20, n = 60, range 50-430 m) was less than half the grid width (500 m), which suggests that grid size did not negatively bias the calculated home-range sizes.

scholarly journals A flyway perspective of foraging activity in Eurasian Green-winged Teal, Anas crecca crecca

2007 ◽  
Vol 85 (1) ◽  
pp. 81-91 ◽  
Author(s):  
C. Arzel ◽  
J. Elmberg ◽  
M. Guillemain
Keyword(s):  
Early Spring ◽  
Breeding Strategy ◽  
Foraging Activity ◽  
Long Distance ◽  
Time Activity ◽  
Anas Crecca ◽  
Income Breeding ◽  
Nocturnal Foraging ◽  
Anas Clypeata ◽  
Foraging Time

Time–activity budgets in the family Anatidae are available for the wintering and breeding periods. We present the first flyway-level study of foraging time in a long-distance migrant, the Eurasian Green-winged Teal, Anas crecca crecca L., 1758 (“Teal”). Behavioral data from early and late spring staging, breeding, and molting sites were collected with standardized protocols to explore differences between the sexes, seasons, and diel patterns. Teal foraging activity was compared with that of the Mallard, Anas platyrhynchos L., 1758 and Northern Shoveler, Anas clypeata L., 1758, and the potential effects of duck density and predator-caused disturbance were explored. In early spring, foraging time was moderate (50.5%) and mostly nocturnal (45%). It increased dramatically in all three species at migration stopovers and during molt, mostly because of increased diurnal foraging, while nocturnal foraging remained fairly constant along the flyway. These patterns adhere to the “income breeding” strategy expected for this species. No differences between the sexes were recorded in either species studied. Teal foraging time was positively correlated with density of Teal and all ducks present, but negatively correlated with predator disturbance. Our study suggests that Teal, in addition to being income breeders, may also be considered as income migrants; they find the energy necessary to migrate at staging sites along the flyway.

Do night-active birds lack daily melatonin rhythms? A case study comparing a diurnal and a nocturnal-foraging gull species

2005 ◽  
Vol 147 (1) ◽  
pp. 107-111 ◽  
Author(s):  
Martin Wikelski ◽  
Elisa M. Tarlow ◽  
Corine M. Eising ◽  
Ton G.G. Groothuis ◽  
Ebo Gwinner
Keyword(s):  
Nocturnal Foraging

scholarly journals Nocturnal Foraging by Red-Legged Kittiwakes, a Surface Feeding Seabird That Relies on Deep Water Prey During Reproduction

PLoS ONE ◽  
2015 ◽  
Vol 10 (10) ◽  
pp. e0138850 ◽  
Author(s):  
Nobuo Kokubun ◽  
Takashi Yamamoto ◽  
Dale M. Kikuchi ◽  
Alexander Kitaysky ◽  
Akinori Takahashi
Keyword(s):  
Deep Water ◽  
Nocturnal Foraging

Effects of artificial illumination on the nocturnal foraging of waders

2010 ◽  
Vol 36 (2) ◽  
pp. 166-172 ◽  
Author(s):  
Carlos D. Santos ◽  
Ana C. Miranda ◽  
José P. Granadeiro ◽  
Pedro M. Lourenço ◽  
Sara Saraiva ◽  
...  
Keyword(s):  
Artificial Illumination ◽  
Nocturnal Foraging
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