Maternal care, defensive behavior, and sociality in neotropical Goniosoma harvestmen (Arachnida, Opiliones)

@article{Machado2002MaternalCD,
  title={Maternal care, defensive behavior, and sociality in neotropical Goniosoma harvestmen (Arachnida, Opiliones)},
  author={Glauco B. O. Machado},
  journal={Insectes Sociaux},
  year={2002},
  volume={49},
  pages={388-393}
}
  • G. Machado
  • Published 1 November 2002
  • Biology
  • Insectes Sociaux
Summary:Goniosoma includes large and conspicuous species of harvestmen that occur exclusively in the Brazilian Atlantic forest. This paper reports on the parental activities, defensive behavior, and gregariousness of five species of Goniosoma, and also summarizes the published biological data for the genus. The behavioral patterns within the genus are discussed and a hypothesis for the emergence of gregariousness in the group is presented. Several Goniosoma live inside caves, mainly as… 
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Spatial distribution, mobility, gregariousness, and defensive behaviour in a Brazilian cave harvestman Goniosoma albiscriptum (Arachnida, Opiliones, Gonyleptidae)

It is suggested that intolerance towards conspecifics during the reproductive period may inhibit the formation of aggregations.

Activity pattern of the Neotropical harvestman Neosadocus maximus (Opiliones, Gonyleptidae): sexual and temporal variations

The activity of N. maximus has sexual, daily, and seasonal variations, which are both quantitative and qualitative, and a new method for quantifying arthropod behavior in captivity based on totally random samplings is proposed.

Convergent fighting behavior in two species of Neotropical harvestmen (Opiliones): insights on the evolution of maternal care and resource defense polygyny

It is suggested that body/egg size and predation pressure may have influenced the evolution of parental care and resource defense polygyny in these two harvestman clades.

systematic revision of Goniosomatinae (Arachnida : Opiliones : Gonyleptidae), with a cladistic analysis and biogeographical notes

A cladistic analysis and taxonomic revision of the species of Goniosomatinae and a new arrangement of genera (and species) are provided and the main taxonomic changes are given.

The ecological tale of Gonyleptidae (Arachnida, Opiliones) evolution: phylogeny of a Neotropical lineage of armoured harvestmen using ecological, behavioural and chemical characters

This work used the information available in the literature and an intensive search for ecological, behavioural and chemical data to infer the phylogeny of the Gonyleptidae, and obtained five most parsimonious trees and the strict consensus resulted in six collapsed nodes.

Foraging, oviposition sites and notes on the natural history of the harvestman Heteromitobates discolor (Opiliones, Gonyleptidae)

The lack of data on the natural history often hampers phylogenetic studies on the evolution of behavior. Herein we provide quantitative field data on foraging and oviposition sites of a Neotropical…

Defensive Responses of Neotropical Harvestmen (Arachnida, Opiliones) to Generalist Invertebrate Predators

The most frequent defensive behavior exhibited by harvestmen was fleeing, and other behaviors included aggression, bobbing, leg autotomy, lying flat, and thanatosis, while Prionostemma exhibited the most variable responses, especially in the presence of ctenid spiders.

Maternal care in the Neotropical harvestman Liogonyleptoides tetracanthus (Opiliones: Gonyleptidae)

There are cases of egg hiding, paternal and maternal care within the subfamily Gonyleptinae, and this diversity of forms of parental care is unusual when compared to other gonylePTid subfamilies, and future systematic revisions of the polyphyletic GONYleptinee should include parental care as a potential source of phylogenetic information.

Five new cases of paternal care in harvestmen (Arachnida: Opiliones): implications for the evolution of male guarding in the Neotropical family Gonyleptidae

Field observations on paternal care in five species of harvestmen belonging to the family Gonyleptidae suggest that males have many mating opportunities and that they guard eggs laid by more than one female, and predicts that paternal care seems to be a sexually selected trait.

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