The Role of Adaptive-Deformation of Water Strider Leg in Its Walking on Water

2009 ◽  
pp. 499-509
Keyword(s):  
Water Strider

scholarly journals THE ROLE OF MULTILEVEL SELECTION IN THE EVOLUTION OF SEXUAL CONFLICT IN THE WATER STRIDER AQUARIUS REMIGIS

Evolution ◽  
2010 ◽  
Vol 64 (11) ◽  
pp. 3183-3189 ◽  
Author(s):  
Omar Tonsi Eldakar ◽  
David Sloan Wilson ◽  
Michael J. Dlugos ◽  
John W. Pepper
Keyword(s):  
Sexual Conflict ◽  
Multilevel Selection ◽  
Water Strider ◽  
Aquarius Remigis

The Role of Adaptive-Deformation of Water Strider Leg in Its Walking on Water

2009 ◽  
Vol 23 (3) ◽  
pp. 493-501 ◽  
Author(s):  
Quan-Shui Zheng ◽  
Yang Yu ◽  
Xi-Qiao Feng
Keyword(s):  
Water Strider

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

2006 ◽  
Vol 138 (4) ◽  
pp. 568-577 ◽  
Author(s):  
Locke Rowe ◽  
Kathleen P. Westlake ◽  
Douglas C. Currie
Keyword(s):  
Functional Significance ◽  
Mating Behaviour ◽  
Experimental Studies ◽  
Water Strider ◽  
Secondary Sexual Traits ◽  
General Sequence ◽  
Short Period ◽  
Sexual Traits ◽  
Male Morphology

AbstractSexual conflict may drive the evolutionary elaboration of sexually antagonistic traits that function in mating interactions. One of the most striking cases of elaboration of male morphology occurs in the water strider genus Rheumatobates Bergroth (Hemiptera: Gerridae). The functional significance of the bizarre modifications of appendages in this group is not known. Here we focus on one of the more elaborate of the species, R. rileyi Bergroth. We conduct observational and experimental studies aimed at determining the general sequence of mating behaviour, the role of females in the outcome of sexual interactions, and the functional significance of the highly modified appendages of males. We also map these traits on a known phylogeny of the genus to determine their pattern of evolution. Males repeatedly harass females and females respond with evasive skating or, if the male successfully grasps her, with a premating struggle. The dynamics of the struggle determine the success of mating attempts. Short struggles typically lead to mating, and long struggles typically result in disengagement of the pair. Following a short period of copulation, males withdraw their genitalia and dismount. Females that have been isolated from males for a period of time become less reluctant to mate. During the premating struggle, the antennae of males are used to grasp the females around the head, and the rear legs are used to lift the females' rear legs off the water surface. Neither antennae nor rear legs are used during copulation, thus they are not used for copulatory courtship. Mapping of these traits on the phylogeny indicates multiple independent origins and a pattern of escalation (16 origins, 7 losses). We conclude that these bizarre traits of males are sexually antagonistic and have evolved repeatedly in the genus.

Role of dactinomycin in the improved survival of children with Wilms' tumor

JAMA ◽  
1966 ◽  
Vol 195 (12) ◽  
pp. 1005-1009 ◽  
Author(s):  
D. J. Fernbach
Keyword(s):  
Wilms Tumor

Role of the allergist in diagnosis and management of patients with uveitis

JAMA ◽  
1966 ◽  
Vol 195 (3) ◽  
pp. 167-172 ◽  
Author(s):  
T. E. Van Metre
Keyword(s):  
Diagnosis And Management

The power of norms to sway fused group members

2018 ◽  
Vol 41 ◽  
Author(s):  
Winnifred R. Louis ◽  
Craig McGarty ◽  
Emma F. Thomas ◽  
Catherine E. Amiot ◽  
Fathali M. Moghaddam
Keyword(s):  
Evolutionary Anthropology ◽  
Normative Systems ◽  
Violent Extremism ◽  
Identity Fusion ◽  
Group Members

AbstractWhitehouse adapts insights from evolutionary anthropology to interpret extreme self-sacrifice through the concept of identity fusion. The model neglects the role of normative systems in shaping behaviors, especially in relation to violent extremism. In peaceful groups, increasing fusion will actually decrease extremism. Groups collectively appraise threats and opportunities, actively debate action options, and rarely choose violence toward self or others.

Elaborating the role of reflection and individual differences in the study of folk-economic beliefs

2018 ◽  
Vol 41 ◽  
Author(s):  
Kevin Arceneaux
Keyword(s):  
Decision Making ◽  
Individual Differences ◽  
Cognitive Processes ◽  
Evolutionary History ◽  
Behavioral Responses ◽  
History Of ◽  
Economic Beliefs

AbstractIntuitions guide decision-making, and looking to the evolutionary history of humans illuminates why some behavioral responses are more intuitive than others. Yet a place remains for cognitive processes to second-guess intuitive responses – that is, to be reflective – and individual differences abound in automatic, intuitive processing as well.

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