Egg Guarding
Mostrando 1-3 de 3 artigos, teses e dissertações.
-
1. Reproductive biology of the harvestman Iporangaia pustulosa (Arachnida: Opiliones): sexual selection and evolution of paternal care / Biologia reprodutiva do opilião Iporangaia pustulosa (Arachnida: Opiliones) : seleção sexual e evolução do cuidado paternal
Exclusive paternal care is rare reproductive strategy that and has evolved only in the order Opiliones among arachnids. Although nearly half of the independent events of evolution of this behavior in arthropods has occurred in the order Opiliones, only a few studies have investigated in detail the reproductive biology of harvestmen species. Iporangaia pustul
Publicado em: 2008
-
2. Mate guarding in the Seychelles warbler is energetically costly and adjusted to paternity risk.
Males may increase their fitness through extra-pair copulations (copulations outside the pair bond) that result in extra-pair fertilizations, but also risk lost paternity when they leave their own mate unguarded. The fitness costs of cuckoldry for Seychelles warblers (Acrocephalus sechellensis) are considerable because warblers have a single-egg clutch and,
-
3. Juvenile hormone, reproduction, and worker behavior in the neotropical social wasp Polistes canadensis
Previous studies of the division of labor in colonies of eusocial Hymenoptera (wasps and bees) have led to two hypotheses regarding the evolution of juvenile hormone (JH) involvement. The novel- or single-function hypothesis proposes that the role of JH has changed from an exclusively reproductive function in primitively eusocial species (those lacking morph
National Academy of Sciences.