Mating in the harvestman Leiobunum vittatum (Arachnida: Opiliones): from premating struggles to solicitous tactile engagement

  title={Mating in the harvestman Leiobunum vittatum (Arachnida: Opiliones): from premating struggles to solicitous tactile engagement},
  author={Kasey D. Fowler‐Finn and Emilia Triana and Owen G. Miller},
When mating interactions are influenced by multiple sources of selection, they may involve multiple stages of mate assessment. At each stage, a different set of morphological and behavioural traits may be important in determining the outcome of the interaction. Here, we test the potential for multiple sources of selection to shape mating interactions in Leiobunum vittatum harvestmen, commonly known as ‘daddy longlegs’. We provide a qualitative and quantitative study of mating interactions, and… 

Variation in Mating Dynamics across Five Species of Leiobunine Harvestmen (Arachnida: Opliones)

The patterns uncovered suggest a rapid evolution of the traits and processes predicting the outcome of mating interactions, and variation in how female and male size predicted outcomes across species and stages of mating suggests that multiple mechanisms may operate to shape mating dynamics within and across species.

Mating behavior of the solitary neotropical harvestman Pachyloides thorellii (Arachnida: Opiliones)

The suitability of this species as a model to explore the importance of male copulatory courtship for female choice and sperm use is supported and establishes the basis for further studies on this species' reproductive biology.

Male and female mate choice in harvestmen: General patterns and inferences on the underlying processes

This chapter provides an overview of harvestman mating systems, examine different temporal phases of male–female sexual interactions, and explore cases of sex role reversal.

Qualitative and quantitative comparisons of mating behaviour across multiple populations and six species of leiobunine harvestmen (Arachnida: Opiliones)

Leiobunine harvestmen offer an excellent system for understanding multiple mechanisms of sexual selection and geographic diversification of mating behaviour, and there is no correlation between behavioural and morphological variation.

Mechanical properties of male genitalia in Leiobunum harvestmen (Opiliones: Sclerosomatidae)

This work demonstrates that experimental genital biomechanics in arthropod intromittent organs is possible, and the functional implications of the results are discussed.

Nuptial gift chemistry reveals convergent evolution correlated with antagonism in mating systems of harvestmen (Arachnida, Opiliones)

This work represents the first comparative study of nuptial gift chemistry within a phylogenetic framework in any animal group and contributes to the understanding of the evolution of reproductive diversity and the participant role ofnuptial Gift chemistry in mating system transitions.

Cryptic Female Choice in Arthropods

Assessing what is known and as yet unknown about the interface between CFC and Sfps and suggesting avenues for further research in this fascinating area of Diptera is concluded.

On the function of the spoon-shaped pedipalps of harvestmen in the family Cosmetidae (Opiliones, Laniatores)

ABSTRACT Pedipalps in laniatorid harvestmen are usually cylindrical and raptorial, but species in Cosmetidae are exceptional in that adults, but not immature, have pedipalps flattened as a spoon.

Biomechanical Diversity of Mating Structures among Harvestmen Species Is Consistent with a Spectrum of Precopulatory Strategies

It is suggested that precopulatory features within species reflect different co-occurring levels of solicitation and antagonism, and that gradualistic evolutionary pathways exist between extreme strategies.

Do structures with sexual contact functions evolve negative static allometries? A case study with the harvestman Leiobunum vittatum (Opiliones Sclerosomatidae)

This hypothesis predicts that non-genitalic structures that touch mates during copulation (to stimulate or grasp the mating partner; “contact structures”) will also scale shallowly with body size, and it is found that contact structures had shallower allometric slopes than non-contact structures, in support of the contact-function hypothesis.



Functional significance of elaborate secondary sexual traits and their evolution in the water strider genus Rheumatobates1

It is concluded that these bizarre traits of males are sexually antagonistic and have evolved repeatedly in the water strider genus Rheumatobates Bergroth.

Behavioral roles of the sexually dimorphic structures in the male harvestman, Phalangium opilio (Opiliones, Phalangiidae)

The data show that the cheliceral horns and the longer pedipalps of the male seem to play an important role, during both intersexual and intrasexual encountering.

Comparative Analyses of Reproductive Structures in Harvestmen (Opiliones) Reveal Multiple Transitions from Courtship to Precopulatory Antagonism

This work examines evolution of reproductive structures in the leiobunine harvestmen or “daddy long-legs” of eastern North America, a monophyletic group that includes species in which males court females using nuptial gifts and other species that are equipped for apparent precopulatory antagonism, and reconstructs character evolution in categorical reproductive traits.

Mating behavior of a Neotropical arachnid with exclusive paternal care

The mating behavior of Iporangaia pustulosa, a Neotropical harvestman with exclusive paternal care, provides evidence of male aggressive rejection of mates and female abandonment of clutches without ovipositing, suggesting that individuals of both sexes may evaluate and select mating partners.

Notes on the biology of the unidentified invasive harvestman Leiobunum sp. (Arachnida: Opiliones)

Its life cycle, hunting strategy, diet and accompanying harvestman species were recorded, and mating, male-male fights and ovipositing behaviour studied, as well as the spider species preying on this Leiobunum species.

Mating Behaviour and Copulatory Mechanism in the Scorpionfly Neopanorpa longiprocessa (Mecoptera: Panorpidae)

The results indicate that nuptial feeding is not a universal behaviour in Panorpidae, and males that succeed in seizing the female with the notal organ are able to establish genital contact and copulate.

Nuptial feeding in tettigoniids male costs and the rates of fecundity increase

  • L. Simmons
  • Biology
    Behavioral Ecology and Sociobiology
  • 2004
Results of some experiments are reported that show that the positive effects of nutrient donation on female reproduction for one species of spermatophylax producing tettigoniid can be realized within 24 to 48 h.

Nuptial gift in the spider Pisaura mirabilis maintained by sexual selection

The nuptial prey gift in Pisaura mirabilis is maintained by sexual selection; it entices the female to copulate, facilitates coupling during copulation, and by prolonging copulation it may increase the amount of sperm transferred.