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You searched for: Journal name Behavioral ecology and sociobiology Remove constraint Journal name: Behavioral ecology and sociobiology Publication year rev 7987-2013 Remove constraint Publication year rev: 7987-2013 Subject term males Remove constraint Subject term: males Subject term dimorphism Remove constraint Subject term: dimorphism
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1. Evolution of mating systems and sexual size dimorphism in North American cyprinids

Author:
M. Pyron; T. E. Pitcher; S. J. Jacquemin
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. Factors influencing sexual cannibalism and its benefit to fecundity and offspring survival in the wolf spider Pardosa pseudoannulata (Araneae: Lycosidae)

Author:
Lingbing Wu; Huaping Zhang; Ting He; Zeliang Liu; Yu Peng
Source:
Behavioral ecology and sociobiology 2013 v.67 no.2 pp. 205-212
ISSN:
0340-5443
Subject:
Pardosa; cannibalism; copulation; dimorphism; eggs; fecundity; hunger; males; progeny; virgin females; China
Abstract:
... Sexual cannibalism is hypothesized to have evolved as a way to obtain a high-quality meal, as an extreme mate choice or as a consequence of female aggressive spillover. Here, we examined underlying factors likely to influence sexual cannibalism in the wolf spider Pardosa pseudoannulata (Bösenberg & Strand, 1906) from China, including mating status, female egg-laid status, female hunger level, fema ...
DOI:
10.1007/s00265-012-1440-2