Open Access. Powered by Scholars. Published by Universities.®

Behavior and Ethology Commons™

Open Access. Powered by Scholars. Published by Universities.®

Sexual selection

Discipline
Institution
Publication Year
Publication
Publication Type
File Type

Articles 31 - 36 of 36

Full-Text Articles in Behavior and Ethology

How Cross-Modality Effects During Intraspecific Interactions Of Jumping Spiders Differ Depending On Whether A Female-Choice Or Mutual-Choice Mating System Is Adopted, Fiona R. Cross, Robert R. Jackson Feb 2009

How Cross-Modality Effects During Intraspecific Interactions Of Jumping Spiders Differ Depending On Whether A Female-Choice Or Mutual-Choice Mating System Is Adopted, Fiona R. Cross, Robert R. Jackson

All Peer-Reviewed Publications

An important prediction from game theory is that the value of a resource influences the level to which conflict escalates. Here we use jumping spiders (Salticidae) to consider this prediction in the context of species adopting different mating systems ('female mate-choice' and 'mutual mate-choice'). Our experiments are designed for determining whether the odour of conspecific females, more than the odour of heterospecific females, primes males to escalate conflict with a potential same-sex rival and also whether the odour of conspecific males, more than the odour of heterospecific males, primes females to escalate conflict with a potential same-sex rival. Four species …

Go to article

Courtship Effort Is A Better Predictor Of Mating Success Than Ornamentation For Male Wolf Spiders, Paul S. Shamble, Dustin J. Wilgers, Katharine A. Swoboda, Eileen Hebets Jan 2009

Courtship Effort Is A Better Predictor Of Mating Success Than Ornamentation For Male Wolf Spiders, Paul S. Shamble, Dustin J. Wilgers, Katharine A. Swoboda, Eileen Hebets

Eileen Hebets Publications

Female mate choice decisions are often based on a variety of male characteristics, some of which may reflect male quality via condition-dependent trait expression. Here, we explore the condition dependence of a male secondary sexual trait in a wolf spider and examine its influence on female mate choice. In the wolf spider Schizocosa uetzi, mature males possess a multimodal courtship display (visual + seismic) in which they slowly raise and lower their dark colored forelegs. Foreleg color is highly variable among S. uetzi males with respect to both total amount and darkness. Using diet manipulations in conjunction with color …

Go to article

Diet Influences Mate Choice Selectivity In Adult Female Wolf Spiders, Eileen Hebets, Jennifer Wesson, Paul S. Shamble Aug 2008

Diet Influences Mate Choice Selectivity In Adult Female Wolf Spiders, Eileen Hebets, Jennifer Wesson, Paul S. Shamble

Eileen Hebets Publications

Most studies of female choice have assumed that mating preferences are shared within a population or species. However, variation both within and among females exists in natural populations, and foraging history is among the many ways in which females may vary. Here, we used diet manipulations in an effort to understand how foraging history influences female mate choice. Immature Schizocosa wolf spiders collected from a mixed population of brush-legged and non-ornamented males were reared in the laboratory on two diets that varied in both quality and quantity (low/high diet). For low- and high-diet individuals, we recorded data on rates of …

Go to article

A Review Of Leg Ornamentation In Male Wolf Spiders, With The Description Of A New Species From Australia, Artoria Schizocoides (Araneae, Lycosidae), Volker W. Framenau, Eileen Hebets Jan 2007

A Review Of Leg Ornamentation In Male Wolf Spiders, With The Description Of A New Species From Australia, Artoria Schizocoides (Araneae, Lycosidae), Volker W. Framenau, Eileen Hebets

Eileen Hebets Publications

Morphological modifications of the first pair of legs in addition to widespread color variations of these legs among males of closely related species have been reported in a variety of spiders. Here, the evidence for sexual dimorphism in male foreleg morphology within wolf spiders (family Lycosidae) is reviewed and shown to occur in a number of species belonging to at least seven genera in five subfamilies: Alopecosa, Hogna, Schizocosa (all Lycosinae) Pirata (Piratinae), Evippa, (Evippinae), Pardosa (Pardosinae) and Artoria (Artoriinae). These modifications, often in combination with distinct dark pigmentation, can be divided into three major groups: leg elongation, segment …

Go to article

Influence Of Optical Cues From Conspecific Females On Escalation Decisions During Male-Male Interactions Of Jumping Spiders, Fiona R. Cross, Robert R. Jackson, Simon D. Pollard, Mark W. Walker Sep 2006

Influence Of Optical Cues From Conspecific Females On Escalation Decisions During Male-Male Interactions Of Jumping Spiders, Fiona R. Cross, Robert R. Jackson, Simon D. Pollard, Mark W. Walker

All Peer-Reviewed Publications

An important prediction from game theory is that the value of a resource influences the level to which male-male conflict escalates. An earlier experimental study showed that males of Hypoblemum albovittatum, a common salticid in New Zealand, can discern by sight alone whether a female is in the vicinity and that, having detected a female's presence, males escalate (i.e., adopt behaviour that is likely to put them at greater risk of injury). Seeing a bare moving cork, a conspecific male or a prey item also elicits escalation, but not to the level elicited by seeing a conspecific female. Here the …

Go to article

Infant Mortality After Takeovers In Wild Ethiopian Hamadryas Baboons, Larissa Swedell, Teklu Tesfaye Jan 2003

Infant Mortality After Takeovers In Wild Ethiopian Hamadryas Baboons, Larissa Swedell, Teklu Tesfaye

Publications and Research

In this paper, we report the first observational evidence of infanticide in wild hamadryas baboons. The study group inhabits the lowlands of the northern Rift Valley in Ethiopia and has been under observation for over 1200 hours, on and off, since October 1996. Here we report observations from August and September 2002 of the consequences of two takeovers of known females with black infants. After the first takeover, the respective infant disappeared and was presumed dead within eleven days of the takeover. After the second takeover, the infant incurred repeated severe aggression from its mother’s new leader male and eventually …

Go to article

First Prev