PubAg

Main content area

Search

2  Search Results

1 - 2 of 2
Number of results to display per page

Search Results

1. 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

2. 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