Ontogeny of diet changes in a tropical benthic carnivorous fish, Parupeneus barberinus (Mullidae): relationship between foraging behaviour, habitat use, jaw size, and prey selection

2001 ◽  
Vol 138 (6) ◽  
pp. 1099-1113 ◽  
Author(s):  
Vimoksalehi Lukoschek ◽  
Mark McCormick
Keyword(s):  
Habitat Use ◽  
Foraging Behaviour ◽  
Prey Selection ◽  
Carnivorous Fish

Activity Patterns, Habitat Use, and Prey Selection by Some African Insectivorous Bats

Biotropica ◽  
1977 ◽  
Vol 9 (2) ◽  
pp. 73 ◽  
Author(s):  
M. B. Fenton ◽  
N. G. H. Boyle ◽  
T. M. Harrison ◽  
D. J. Oxley
Keyword(s):  
Habitat Use ◽  
Prey Selection ◽  
Activity Patterns ◽  
Insectivorous Bats

Habitat use, temporal activity patterns and foraging behaviour of raptors in the south-west of the Northern Territory, Australia

2001 ◽  
Vol 28 (4) ◽  
pp. 365 ◽  
Author(s):  
Tom Aumann
Keyword(s):  
Habitat Use ◽  
Foraging Behaviour ◽  
Activity Patterns ◽  
Northern Territory ◽  
Diel Activity ◽  
The South ◽  
Interspecific Differences ◽  
South West ◽  
Diel Activity Patterns ◽  
Vegetation Structures

On the basis of opportunistic observations, the preferred habitats of diurnal raptors in the south-west of the Northern Territory are quantified in terms of their vegetation structures and composition, and linked with foraging methods and information on local diets. Broad interspecific differences in diel activity patterns are also described. The evidence suggests that raptor species in this part of arid Australia differ with respect to their foraging times, habitats and methods, and that these differences relate to their partitioning of food resources.

Occurrence and habitat use of Bryde's whales (Balaenoptera edeni) in the Cabo Frio region, South-eastern Brazil

2016 ◽  
Vol 98 (5) ◽  
pp. 1081-1086 ◽  
Author(s):  
Israel S. Maciel ◽  
Rodrigo H. Tardin ◽  
Sheila M. Simão
Keyword(s):  
Habitat Use ◽  
Foraging Behaviour ◽  
Field Trips ◽  
South Eastern ◽  
Video Recordings ◽  
Eastern Brazil ◽  
Water Depths ◽  
Cabo Frio

Ninety-six field trips were conducted between summer 2010 and 2012 in order to understand the occurrence and habitat use of Bryde's whale (Balaenoptera edeni) in the Cabo Frio region, South-eastern Brazil. Bryde's whales were present in the study area between November and July, being observed during all seasons, but occur more frequently during the autumn (Nindividuals = 16) and spring (Nindividuals = 13), followed by summer (Nindividuals = 5) and winter (Nindividuals = 2), respectively. Bryde's whales were observed in water depths ranging from 20.1–100 m. Furthermore, during 2240 min of video recordings, the most frequent behaviour observed was foraging (40.2%; 900 min). Travelling comprised 28.1% (630 min) of observations, while in 33.1% (710 min) behaviour could not be determined. Taking into account the pattern of occurrence, the use of deeper bathymetric bins and the frequency observed, the foraging behaviour of Bryde's whales observed in our study seems to be associated to prey dynamics. Our data show that the study area is frequently used for foraging by this species in Brazilian waters.

Frequency-dependent prey selection by larvae of Toxorhynchites splendens (Diptera: Culicidae)

1996 ◽  
Vol 86 (6) ◽  
pp. 633-639 ◽  
Author(s):  
D. Dominic Amalraj ◽  
P. K. Das
Keyword(s):  
Aedes Aegypti ◽  
Foraging Behaviour ◽  
Anopheles Stephensi ◽  
Prey Size ◽  
Prey Selection ◽  
Fourth Instar ◽  
Frequency Dependent ◽  
Size Selection ◽  
The Stability

AbstractThe foraging behaviour of frequency-dependent prey selection by larval instars of Toxorhynchites splendens (Wiedemann) was studied in the laboratory. Prey size selection (second vs fourth instars of Aedes aegypti Linnaeus or Anopheles stephensi Liston) by third and fourth instar predators was frequency-dependent. However, in the case of second instar predators, prey size selection was not frequency-dependent and the predator preferred second instar to fourth instar prey. When offered second instars of Aedes aegypti and Anopheles stephensi the preference for one species over the other was frequency-dependent in all the three predator instars. The role of frequency-dependent prey selection in the stability of prey—predator interaction at low equilibrium levels is discussed.

scholarly journals Foraging behaviour and habitat use by brown skuas Stercorarius lonnbergi breeding at South Georgia

2014 ◽  
Vol 161 (8) ◽  
pp. 1755-1764 ◽  
Author(s):  
Ana Paula B. Carneiro ◽  
Andrea Manica ◽  
Richard A. Phillips
Keyword(s):  
Habitat Use ◽  
Foraging Behaviour ◽  
South Georgia

scholarly journals Breeding Stage and Environmental Factors Affect Prey Selection by Greater Crested Terns Off Southeast Australia

2021 ◽  
Author(s):  
Katrin Quiring ◽  
Gemma Carroll ◽  
Eckhard Heymann ◽  
Curtis Champion ◽  
Robert Harcourt
Keyword(s):  
Environmental Factors ◽  
Diet Composition ◽  
Foraging Behaviour ◽  
Prey Selection ◽  
Sea Surface ◽  
Chick Growth ◽  
Breeding Stage ◽  
Marine Predators ◽  
Selective Foraging ◽  
Family Level

Abstract Variation in the diet of marine predators such as seabirds can be used to track environmentally-driven changes in ocean ecosystems. However, studies of predator diet must account for intrinsic influences on prey selection, such as changing nutritional requirements during breeding. Using digital photography, we investigated how the type and size of prey brought back to the colony by greater crested terns (Thalasseus bergii) changed in relation to breeding stage, and to variation in oceanographic conditions around Montague Island, Australia (36°15’S, 150°13’E). 2469 prey items were identified to species or family level over 35 consecutive days of photo-sampling in 2018. Australian anchovy (Engraulis australis), a surface-schooling clupeid fish, was the most abundant prey returned to the colony during all breeding stages (84.5%). The proportion of anchovy increased from 77.0% when birds were provisioning their adult partners during incubation, to 92.4% when they were provisioning chicks, suggesting selective foraging behaviour on this energy-dense species as a means to facilitate rapid chick growth. Anchovy size was largest during incubation (91.1 ± 14.9 mm), smallest during early chick provisioning (71.8 ± 11.0 mm), and increased slightly during mid-provisioning (79.6 ± 11.9 mm), indicating adaptive prey selection that is matched to the physical requirements of different breeding stages. The proportion of anchovy prey was also influenced by extrinsic environmental factors, with anchovy becoming more dominant with increasing local sea surface temperatures, up to ~17.5°C. Our findings highlight the importance of examining both intrinsic and extrinsic determinants of diet composition across breeding stages in seabird populations.

Spatio-temporal patterns of foraging behaviour in a wide-ranging seabird reveal the role of primary productivity in locating prey

2020 ◽  
Vol 646 ◽  
pp. 175-188
Author(s):  
A Kane ◽  
E Pirotta ◽  
S Wischnewski ◽  
EJ Critchley ◽  
A Bennison ◽  
...  
Keyword(s):  
Habitat Use ◽  
Foraging Behaviour ◽  
Food Resource ◽  
Biotic Interactions ◽  
Central Place ◽  
Ocean Dynamics ◽  
Environmental Predictors ◽  
Nocturnal Foraging ◽  
Spatio Temporal ◽  
Marine Productivity

Predicting the distribution and behaviour of animals is a fundamental objective in ecology and a cornerstone of conservation biology. Modelling the distribution of ocean-faring species like seabirds remains a significant challenge due to ocean dynamics, colony-specific effects and the vast ranges seabirds can cover. We used a spatial and behavioural approach to model the distribution of the Manx shearwater Puffinus puffinus, a pelagic, central-place forager that can cover great distances while foraging. GPS data from birds tagged in 2 colonies over 3 yr were modelled with a range of environmental predictors of marine productivity. For both colonies, transitions to foraging behaviour correlated with chlorophyll a, and the distribution of foraging behaviour was also associated with areas of high chlorophyll a concentration in coastal but not offshore areas for one colony. Furthermore, there was evidence for colony differences in habitat use, prevalence of nocturnal foraging, and for some competitive exclusion on foraging grounds, even though the colonies were 170 km apart. Despite the extensive dataset, our models had modest predictive power, which we suggest can probably only be improved by including biotic interactions, including more direct measures of food resource distribution. Our results highlight the importance of including spatial complexity and data from multiple sites when predicting the distribution of wide-ranging predators, because patterns of distribution and habitat use likely differ across the range of a population.

Habitat and nest-site partitioning in splendid and variegated fairy-wrens (Aves : Maluridae)

1999 ◽  
Vol 47 (4) ◽  
pp. 317 ◽  
Author(s):  
Elizabeth Tibbetts ◽  
Stephen Pruett-Jones
Keyword(s):  
Life History ◽  
Habitat Use ◽  
Interspecific Competition ◽  
Similar Pattern ◽  
Foraging Behaviour ◽  
Nest Site ◽  
Interspecific Interactions ◽  
Territory Size ◽  
Sympatric Populations ◽  
Nest Placement

Territory size, interspecific interactions, foraging behaviour, habitat use, and nest placement were examined in sympatric populations of splendid (Malurus splendens melanotus) and variegated (M. lamberti assimilis) fairy-wrens. Although these species have similar patterns of life history and biology, they utilise different microhabitats within overlapping territories. Splendid fairy-wrens spent more time on the ground and in open areas, whereas variegated fairy-wrens generally preferred higher and more protected locations. The two species exhibited a similar pattern of separation with respect to foraging behaviour, as splendid fairy- wrens mainly foraged on the ground whereas variegated fairy-wrens preferred bushes. They also partitioned nesting habitat, with splendid fairy-wrens building nests in areas with a greater density of trees than variegated fairy-wrens. Further, splendid fairy-wrens built nests in larger shrubs and farther from the edge of these bushes than variegated fairy-wrens. We suggest that these differences in habitat use decrease interspecific competition between the two species.

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