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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 males Remove constraint Subject: males Text Availability Citation in PubAg Remove constraint Text Availability: Citation in PubAg
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1. Colony take-over and brood survival in temporary social parasites of the ant genus Formica

Author:
Chernenko, Anton; Vidal-Garcia, Marta; Helanterä, Heikki; Sundström, Liselotte
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 727-735
ISSN:
0340-5443
Subject:
Formica fusca; eggs; hosts; males; parasites; progeny; pupation; risk; social parasitism
Abstract:
... Parasites reduce host fitness, and so instigate counter adaptations by their hosts. In temporary social parasitism, usurpers must not only enter the colony unharmed, but also have their eggs reared by the host workers. We introduced parasitic Formica lugubris and Formica aquilonia queens into queen right and orphaned fragments of three host species, Formica cinerea, Formica picea and Formica fusca ...
DOI:
10.1007/s00265-013-1496-7

2. Dissecting the mechanisms underlying old male mating advantage in a butterfly

Author:
Karl, Isabell; Heuskin, Stéphanie; Fischer, Klaus
Source:
Behavioral ecology and sociobiology 2013 v.67 no.5 pp. 837-849
ISSN:
0340-5443
Subject:
Bicyclus anynana; butterflies; flight; males; pheromone blends; sex pheromones
Abstract:
... Selection is expected to maximize an individual’s own genetic reward regardless of the potential fitness consequences for its sexual partners, which may cause sexual conflict. Although performance in holometabolous insects typically diminishes with age, old male mating advantage has been documented in a few species. Whether this pattern arises from female preference for older males based on, e.g., ...
DOI:
10.1007/s00265-013-1507-8

3. 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

4. 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