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You searched for: Journal Behavioral ecology and sociobiology Remove constraint Journal: Behavioral ecology and sociobiology Publication Year 2013 Remove constraint Publication Year: 2013 Source 2013 v.67 no.5 Remove constraint Source: 2013 v.67 no.5 Subject females Remove constraint Subject: females
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1. Communal nesting in an ‘asocial’ mammal: social thermoregulation among spatially dispersed kin

Author:
Williams, Cory T.; Gorrell, Jamieson C.; Lane, Jeffrey E.; McAdam, Andrew G.; Humphries, Murray M.; Boutin, Stan
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 757-763
ISSN:
0340-5443
Subject:
Tamiasciurus hudsonicus; females; heat production; kin selection; lactation; nesting; nests; population structure; social behavior; spring; squirrels; thermoregulation; winter
Abstract:
... Communal nesting can help defray the high cost of endothermic heat production in cold environments, but such social behavior is generally thought to be incompatible with the persistent defense of exclusive territories in typically ‘asocial’ animals. We examined the propensity for communal nesting in female red squirrels (Tamiasciurus hudsonicus), which maintain individual year-round territories, t ...
DOI:
10.1007/s00265-013-1499-4

2. Evolution of mating systems and sexual size dimorphism in North American cyprinids

Author:
Pyron, M.; Pitcher, T. E.; Jacquemin, S. J.
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 747-756
ISSN:
0340-5443
Subject:
Cyprinidae; body size; dimorphism; females; fish; males; mating systems; models; phylogeny; spawning; sperm competition; testes
Abstract:
... Mating systems evolve with sexual size dimorphism (SSD) in many animals. Mating systems with males larger than females occur when males compete for female access or guard territories, while mating systems with group mating tend to occur in species where females are the same size or larger than males. In addition to variation in SSD with mating system, sperm competition varies among mating systems ...
DOI:
10.1007/s00265-013-1498-5

3. Gray tree frogs, Hyla versicolor, give lower-frequency aggressive calls in more escalated contests

Author:
Reichert, Michael S.; Gerhardt, H. Carl
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 795-804
ISSN:
0340-5443
Subject:
Hyla versicolor; amphibians; animal communication; females; males; motivation
Abstract:
... As animal contests escalate, variation in the performance of aggressive signaling behaviors can give important insights into contest dynamics. In anuran amphibians, males of numerous species utilize distinctive aggressive vocalizations during disputes over calling spaces. Little is known, however, about the causes and consequences of variation in aggressive-call characteristics. We analyzed record ...
DOI:
10.1007/s00265-013-1503-z

4. Multi-year lactation and its consequences in Bornean orangutans (Pongo pygmaeus wurmbii)

Author:
van Noordwijk, Maria A.; Willems, Erik P.; Utami Atmoko, Sri Suci; Kuzawa, Christopher W.; van Schaik, Carel P.
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 805-814
ISSN:
0340-5443
Subject:
Pongo pygmaeus; conception; energy intake; females; food availability; foods; infant development; late lactation; mammals; milk; milk consumption; mothers; nutrient content; progeny; suckling; weaning
Abstract:
... In most mammals, females pay for reproduction by dramatically increasing net energy intake from conception to mid- or late lactation. To do this, they time their reproductive events in relation to environmental cycles so that periods of peak food availability coincide with peak demand or are used to build energy stores. This timing is not possible in species with slow development in which lactatio ...
DOI:
10.1007/s00265-013-1504-y