Foraging Behavior and Nocturnal Activity Patterns of Missouri Bats, with Emphasis on the Endangered Species Myotis grisescens and Myotis sodalis

1977 ◽  
Vol 58 (4) ◽  
pp. 592-599 ◽  
Author(s):  
R. K. LaVal ◽  
R. L. Clawson ◽  
M. L. LaVal ◽  
W. Caire
Keyword(s):  
Endangered Species ◽  
Foraging Behavior ◽  
Activity Patterns ◽  
Myotis Sodalis ◽  
Nocturnal Activity ◽  
Myotis Grisescens

Activity patterns of wild Bactrian camels (Camelus bactrianus) in the northern piedmont of the Altun Mountains, China

2015 ◽  
Vol 65 (3-4) ◽  
pp. 209-217 ◽  
Author(s):  
Yadong Xue ◽  
Diqiang Li ◽  
Wenfa Xiao ◽  
Fang Liu ◽  
Yuguang Zhang ◽  
...  
Keyword(s):  
Seasonal Variation ◽  
Endangered Species ◽  
Activity Patterns ◽  
Relative Activity ◽  
Diel Activity ◽  
Arid Areas ◽  
Critically Endangered Species ◽  
Camelus Bactrianus ◽  
Diel Activity Patterns ◽  
Bactrian Camels

There are significant gaps in our knowledge of wild camel ecology; especially the activity patterns that allow them to adapt to desert environments. The wild Bactrian camel (Camelus bactrianus) is a critically endangered species that survives in the extreme desert conditions of Central Asia. We conducted camera trapping surveys at seven watering sites in the northern piedmont of the Altun Mountains from 2010 to 2012. We analyzed the frequency of photo-captures to elucidate the wild camels’ diel activity patterns, and the seasonal variation in their activity at watering sites. We found that these wild camels were predominantly diurnal at watering sites, with an increase in relative activity from sunrise, reaching a peak toward midday, and then gradually decreasing in activity until sunset. The camels visited watering sites more often in winter than in summer. These results provide a guide for water development in the conservation of ungulates in arid areas.

scholarly journals Foraging behavior and at-sea distribution of White-Tailed Tropicbirds in tropical ocean

2017 ◽  
Vol 78 (3) ◽  
pp. 556-563 ◽  
Author(s):  
L. F. A. S. Campos ◽  
A. B. Andrade ◽  
S. Bertrand ◽  
M. A. Efe
Keyword(s):  
Endangered Species ◽  
Foraging Behavior ◽  
Mortality Rates ◽  
Nest Attendance ◽  
Breeding Colony ◽  
Tropical Ocean ◽  
Foraging Patterns ◽  
Land Crab ◽  
Egg Consumption ◽  
Foraging Pattern

Abstract We used miniaturized GPS loggers and site observations to access foraging patterns and nest behaviour of the White-tailed Tropicbird Phaethon lepturus (WTTB), an endangered species at its South Atlantic breeding colony. Dual foraging pattern was observed with alternation between long and short foraging trips. Birds responsible for nest attendance engaged in short foraging trips with mean distance from colony of 25 ± 17 km, total distance covered of 79 ± 65 km and mean duration of 4.02 ± 5.28 hours. Birds flew by dawn and returned before dusk while partners were at sea for long foraging trips that ranged from four to 11 days, with mean maximum distance from colony of 105 ± 47.48 km. Chicks were usually left alone for hours and chick predation by Land Crab Johngartia lagostroma, egg consumption by Goniopsis cruentata and intra-specific competition are suspected to be responsible for high chick mortality rates.

The active nightlife of diurnal birds: extraterritorial forays and nocturnal activity patterns

2014 ◽  
Vol 88 ◽  
pp. 175-184 ◽  
Author(s):  
Michael P. Ward ◽  
Mark Alessi ◽  
Thomas J. Benson ◽  
Scott J. Chiavacci
Keyword(s):  
Activity Patterns ◽  
Nocturnal Activity

Occupancy, detectability, and density of crab-eating fox (Cerdocyon thous) in two protected areas of restinga habitats in Brazil

2019 ◽  
Vol 97 (10) ◽  
pp. 952-959
Author(s):  
Priscila Stéfani Monteiro-Alves ◽  
Débora Molino Helmer ◽  
Atilla Colombo Ferreguetti ◽  
Juliane Pereira-Ribeiro ◽  
Carlos Frederico Duarte Rocha ◽  
...  
Keyword(s):  
Protected Areas ◽  
Activity Patterns ◽  
Camera Traps ◽  
Total Abundance ◽  
Nocturnal Activity ◽  
Starting Point ◽  
Cerdocyon Thous ◽  
Future Work ◽  
Mammal Communities ◽  
Management And Conservation

Crab-eating foxes (Cerdocyon thous (Linnaeus, 1766)) are frequently recorded in lists of mammal communities. However, studies quantifying aspects of the ecology of the species are uncommon in the literature. Thus, we aimed to quantify the density, activity, habitat use, and potential threats of C. thous in two protected areas (PAs) in the State of Espírito Santo, Brazil. We used data derived from camera traps and sand plots to model occupancy, detectability, activity; we also used random encounter models (REMs) to model density and abundance. We also estimated the activity of the species. Density of C. thous was 0.82 individuals/km2 with a total abundance of 119 individuals. We concluded that in the PAs studied, C. thous had bimodal, twilight–nocturnal activity patterns and was associated with water sources. Although the species in the area has a relatively high density compared with that from other areas in Brazil, it could be locally threatened by the highway that crosses the two PAs, promoting roadkill events, and by domestic dogs (Canis familiaris Linnaeus, 1758) recorded in these areas. Results presented herein can be a starting point to support future work in the region and to make predictions regarding the management and conservation of C. thous, a widely distributed species.

Moonlight Avoidance Behavior in Leach's Storm-Petrels as a Defense against Slaty-Backed Gulls

The Auk ◽  
1986 ◽  
Vol 103 (1) ◽  
pp. 14-22 ◽  
Author(s):  
Yutaka Watanuki
Keyword(s):  
Predator Avoidance ◽  
Full Moon ◽  
Activity Patterns ◽  
Predation Rate ◽  
Activity Levels ◽  
Nocturnal Activity ◽  
Oceanodroma Leucorhoa ◽  
Risk Of Predation ◽  
Reduced Activity ◽  
Moonlight Avoidance

Abstract Diurnal activity patterns of Leach's Storm-Petrels (Oceanodroma leucorhoa) and Slaty-backed Gulls (Larus schistisagus) were investigated. The petrels reduced activity in moonlight in May and June when the predation rate by gulls was relatively high. Petrel activity levels were inversely correlated with light intensities and the corresponding risk of predation by the gull. This suggests that nocturnal activity and moonlight avoidance by the petrel in its colony are an effective defense against diurnal predators. Activity synchronization of the petrel was most marked during the full moon, further supporting the predator-avoidance hypothesis.

Nocturnal Activity Patterns of Feral Ponies

1980 ◽  
Vol 61 (1) ◽  
pp. 116-118 ◽  
Author(s):  
R. R. Keiper ◽  
M. A. Keenan
Keyword(s):  
Activity Patterns ◽  
Nocturnal Activity

scholarly journals Widespread nocturnality of living birds stemming from their common ancestor

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Yonghua Wu
Keyword(s):  
Positive Selection ◽  
Common Ancestor ◽  
Activity Patterns ◽  
Bright Light ◽  
Night Vision ◽  
Diel Activity ◽  
Divergent Evolution ◽  
Nocturnal Activity ◽  
Evolutionary Origins ◽  
Diel Activity Patterns

Abstract Background Many living birds exhibit some nocturnal activity, but the genetic basis and evolutionary origins of their nocturnality remain unknown. Results Here, we used a molecular phyloecological approach to analyze the adaptive evolution of 33 phototransduction genes in diverse bird lineages. Our results suggest that functional enhancement of two night-vision genes, namely, GRK1 and SLC24A1, underlies the nocturnal adaption of living birds. Further analyses showed that the diel activity patterns of birds have remained relatively unchanged since their common ancestor, suggesting that the widespread nocturnal activity of many living birds may largely stem from their common ancestor rather than independent evolution. Despite this evolutionary conservation of diel activity patterns in birds, photoresponse recovery genes were found to be frequently subjected to positive selection in diverse bird lineages, suggesting that birds generally have evolved an increased capacity for motion detection. Moreover, we detected positive selection on both dim-light vision genes and bright-light vision genes in the class Aves, suggesting divergent evolution of the vision of birds from that of reptiles and that different bird lineages have evolved certain visual adaptions to their specific light conditions. Conclusions This study suggests that the widespread nocturnality of extant birds has a deep evolutionary origin tracing back to their common ancestor.

Nocturnal Activity Patterns of Lutzomyia longipalpis (Diptera: Psychodidae) at an Endemic Focus of Visceral Leishmaniasis in Colombia

1995 ◽  
Vol 32 (5) ◽  
pp. 605-617 ◽  
Author(s):  
Amy C. Morrison ◽  
Cristina Ferro ◽  
Raul Pardo ◽  
Mariela Torres ◽  
Mark L. Wilson ◽  
...  
Keyword(s):  
Visceral Leishmaniasis ◽  
Activity Patterns ◽  
Lutzomyia Longipalpis ◽  
Nocturnal Activity ◽  
Endemic Focus

Daytime and nighttime activity at a breeding colony of Great Blue Herons in a nontidal environment

1993 ◽  
Vol 71 (6) ◽  
pp. 1075-1078 ◽  
Author(s):  
Raymond McNeil ◽  
Rejean Benoît ◽  
Jean-Luc Desgranges
Keyword(s):  
Tidal Cycle ◽  
Activity Patterns ◽  
Coastal Areas ◽  
Daily Rhythm ◽  
Diurnal Activity ◽  
Nocturnal Activity ◽  
Breeding Colony ◽  
Ardea Herodias ◽  
Foraging Time

It is generally admitted that in coastal areas, herons of the genus Ardea adjust their foraging time according to the tidal cycle. However, to what extent do tides control the herons' daily rhythm of activity? To answer this question, we present the day and night activity patterns of Great Blue Herons (Ardea herodias) arriving to feed their young at a heronry located in a nontidal environment in southern Quebec. Herons were about half as active at night as during the day. Therefore, although significantly less than diurnal activity, nocturnal activity was not negligible, and consequently the tide cycle is not the only factor controlling the daily rhythm of the herons' activity. Those breeding pairs that were most active during the day were no more or less active at night. Diurnal activity was more closely correlated with the number of young that fledged than was nocturnal activity. Thus, night activity was not necessarily important for the survival of young herons, but it could be explained by other factors such as the greater availability of certain prey at night.

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