Social facilitation in short-tailed fruit bats, Carollia perspicillata (Linnaeus)

Behaviour ◽  
2020 ◽  
Vol 157 (14-15) ◽  
pp. 1193-1210
Author(s):  
Genevieve Spanjer Wright ◽  
Gerald S. Wilkinson ◽  
Cynthia F. Moss
Keyword(s):  
Social Facilitation ◽  
Foraging Behaviour ◽  
Group Living ◽  
Fruit Bats ◽  
Same Sex ◽  
Local Enhancement ◽  
Pit Tag ◽  
Carollia Perspicillata ◽  
Foraging Performance

Abstract Group-living animals can potentially enhance their foraging performance and efficiency by obtaining information from others. Using PIT-tag data to study foraging behaviour in individual bats, we tested short-tailed fruit bats, Carollia perspicillata (Linnaeus), for evidence of local enhancement or social facilitation. To discriminate between these phenomena, we manipulated the presence of conspecifics while individuals searched for food. We quantified the time to find food and the order and sex of bats accessing the food, and any consistent associations between bats. Presence of conspecifics decreased the time needed to find food. We found no evidence that pairs of individuals consistently fed together; however, bats of the same sex tended to feed closer in time with one another. The same individuals consistently accessed the food first, and males found food more quickly than females. Our results provide evidence of social facilitation, with bats finding food more quickly in a group than alone.

Unravelling the function of dolphin leaps using the dusky dolphin (Lagenorhynchus obscurus) as a model species

Behaviour ◽  
2017 ◽  
Vol 154 (5) ◽  
pp. 563-581 ◽  
Author(s):  
Heidi C. Pearson
Keyword(s):  
Social Facilitation ◽  
Foraging Behaviour ◽  
Prey Capture ◽  
Foraging Efficiency ◽  
Lagenorhynchus Obscurus ◽  
The Social ◽  
Negative Effect ◽  
Dusky Dolphins ◽  
Dusky Dolphin ◽  
Positive Effect

The prevalence of leaping across delphinids indicates it has an adaptive benefit. I examined leaping behaviour in dusky dolphins (Lagenorhynchus obscurus) according to signalling, social facilitation, and prey capture hypotheses. I quantified the effect of leaping on group behaviour and fission-fusion and the behavioural context of leaping. I observed dolphins in Admiralty Bay, New Zealand during 171 focal follows totalling 157 h. Data were analysed using generalized estimating equations. Clean leaping had a positive effect on party fission () and foraging behaviour (). Coordinated leaping caused a short-term wane in foraging behaviour () and had a positive effect on party fusion (). Noisy leaping had a negative effect on perpetuating resting and traveling cessation (both ). The signalling hypothesis was the most strongly supported. The social facilitation and prey capture hypotheses were moderately supported. Leaping may provide adaptive benefits such as reduced scramble competition, increased foraging efficiency, and social bonding.

scholarly journals Tolerance and Social Facilitation in the Foraging Behaviour of Free-Ranging Crows (Corvus corone corone; C. c. cornix)

Ethology ◽  
2014 ◽  
Vol 120 (12) ◽  
pp. 1248-1255 ◽  
Author(s):  
Rachael Miller ◽  
Martina Schiestl ◽  
Andrew Whiten ◽  
Christine Schwab ◽  
Thomas Bugnyar
Keyword(s):  
Social Facilitation ◽  
Foraging Behaviour ◽  
Corvus Corone ◽  
Free Ranging

Generating Timed Pregnancies in Fruit Bats (Carollia perspicillata)

2009 ◽  
Vol 2009 (3) ◽  
pp. pdb.prot5160-pdb.prot5160
Author(s):  
J. J. Rasweiler ◽  
C. J. Cretekos ◽  
R. R. Behringer
Keyword(s):  
Fruit Bats ◽  
Carollia Perspicillata

scholarly journals Vocalization can mediate male–male sexual interactions in Java sparrows

2019 ◽  
Vol 69 (1) ◽  
pp. 5-15
Author(s):  
Hiroko Adachi ◽  
Masayo Soma
Keyword(s):  
Sexual Behaviors ◽  
Individual Variation ◽  
Group Living ◽  
Social Bonding ◽  
Same Sex ◽  
Acoustic Parameters ◽  
Defensive Behaviors ◽  
Courtship Songs ◽  
Acoustic Analyses ◽  
Vocal Communications

Abstract Same-sex sexual behaviors do not have direct fitness outcomes, but might be adaptive. This issue is often discussed in group-living animals, where social bonding is crucial. In our captive environment, around 33% of the Java-sparrow (Lonchura oryzivora) males kept in unisex cages have stable bonded partners. Those bonded males often perch side by side and show allopreening and joint-defensive behaviors towards others. In this study, we aimed to determine how males including such same-sex bonded individuals communicate with each other via vocalizations. We introduced same-sex pairs of Java sparrows, which were bonded or non-bonded, in sound-attenuated boxes and compared their recorded vocalizations with those from male–female pairs. For the male–male pairs, we identified two vocalizations that are usually exchanged between paired partners in intimate contexts: mating trills – which are usually emitted by females during successful copulation – and meowing calls – which are given when both members of the pair are in the nest at the same time. We found that males gave mating trills when their partner males were singing courtship songs, or performed trill duets, which sometimes also included meowing calls. Acoustic analyses revealed that there was no difference between male–male and male–female vocalizations. Meowing calls showed greater within-individual variation in duration and other acoustic parameters, but were similar in same-sex and mixed-sex contexts. Our results indicate that male–male pairs exchanged intimate vocal communications just like male–female couples.

Differences in the foraging behaviour of male and female Egyptian fruit bats (Rousettus aegyptiacus)

2011 ◽  
Vol 89 (6) ◽  
pp. 466-473 ◽  
Author(s):  
R.M.R. Barclay ◽  
D.S. Jacobs
Keyword(s):  
Home Range ◽  
Foraging Behaviour ◽  
Home Range Size ◽  
Small Population ◽  
Range Size ◽  
Native Forest ◽  
Fruit Bats ◽  
Male And Female ◽  
Pregnancy And Lactation ◽  
Males And Females

Male and female animals frequently have different foraging behaviours owing to differences in body size or nutritional demand, or to intraspecific competition. We studied foraging by Egyptian fruit bats ( Rousettus aegyptiacus (E. Geoffroy, 1810)) in Cape Town, South Africa, to test predictions based on differences in nutritional demand during reproduction. Using radiotelemetry, we compared emergence, return, and foraging times of males and females during pregnancy and lactation. We also determined home-range size, habitat use, and use of figs (genus Ficus L.), which are a potential source of calcium for lactating females. During the pregnancy period, males left their roost later than females and were away from the roost for shorter periods. There were no differences in timing of foraging during lactation. Females foraged in native forest more than males did, but home-range size did not differ. There was no evidence that females fed on figs more than males did. Differences in foraging behaviour were not as predicted based on nutritional and energetic differences. The small population may have meant that there was little competition for food, and figs may have provided a profitable source of energy for both males and females. Differences in the timing of foraging are best explained by the need for males to defend roosting sites.

Stimulus Enhancement: Controls for Social Facilitation and Local Enhancement

2000 ◽  
Vol 31 (2) ◽  
pp. 83-98 ◽  
Author(s):  
C.M. Heyes ◽  
E.D. Ray ◽  
C.J. Mitchell ◽  
T. Nokes
Keyword(s):  
Social Facilitation ◽  
Local Enhancement ◽  
Stimulus Enhancement
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