TANG-MARTINEZ, Z.; RYDER, T.B.; University of Missouri-St. Louis; University of Missouri-St. Louis: The Problem with Paradigms: Bateman’s Predictions as a Case Study Bateman’s Principle, its corollaries, and its predictions constitute an important paradigm in behavioral ecology. This paradigm has influenced numerous areas of research in behavior, including sexual selection theory, hypotheses on the evolution of […]
year: 2004
Terminal Investment Strategies and Male Mate Choice Extreme Tests of Bateman
ANDRADE, MCB; University of Toronto at Scarborough: Terminal Investment Strategies and Male Mate Choice: Extreme Tests of Bateman Bateman’s principle predicts the intensity of sexual selection is controlled by rates of increase of fecundity with mating success for each sex (Bateman’s slopes). The sex with a steeper increase (usually males) is under more intense sexual […]
Selective Cooperation vs Antagonistic Coevolution Competing Offspring of Bateman’s Principle
EBERHARD, WG; STRI and Univ. de Costa Rica: Selective Cooperation vs. Antagonistic Coevolution: Competing Offspring of Bateman’s Principle Several major empirical patterns in nature conform to the Bateman principle that male reproduction is generally more limited by access to mates than is that of females: males not females generally initiate sexual interactions; males generally court […]
Patterns of Parental Investment and Sexual Selection in Fishes Do They Support Batemans Principle
RIOS-CARDENAS, Oscar; Ohio University: Patterns of Parental Investment and Sexual Selection in Fishes: Do They Support Bateman�s Principle? Bateman was the first to show a sex difference in variance in mating success. He proposed that this differential in mating success variance was caused by the differential investment in gamete production (males produce cheap sperm, while […]
Batemans principle and simultaneous hermaphrodites a paradox
LEONARD, J.L.; Univ. of California, Santa Cruz: Bateman�s principle and simultaneous hermaphrodites: a paradox Bateman�s principle states that reproductive success is limited a) in females by the resources available for egg production; and b) in males, only by access to females and/or eggs. Therefore, variance in reproductive success should be higher in males than in […]
&65279;The Darwin-Bateman Paradigm in Historical Context
DEWSBURY, D. A.; Univ. of Florida: The Darwin-Bateman Paradigm in Historical Context I introduce the term �Darwin-Bateman Paradigm� to include several ideas stemming from the writings of Charles Darwin and A. J. Bateman including the notions that (a) male reproductive success is more variable than that of females, (b) males gain more in reproductive […]
Troubles in flashlight world The effects of water turbidity and visual acuity on the success of counterillumination in deep-sea species
JOHNSEN, Sonke; Duke University: Troubles in flashlight world: The effects of water turbidity and visual acuity on the success of counterillumination in deep-sea species Many deep-sea species, particularly crustaceans, cephalopods, and fish, use photophores to illuminate their ventral surface and thus disguise their silhouette from predators viewing them from below. Despite its apparent success and […]
The Control and Execution of Rapid Flight Maneuver in Fruit Flies
DICKINSON, M. H.; Caltech: The Control and Execution of Rapid Flight Maneuver in Fruit Flies Drosophila, like many flies, search and explore their environment using a series of straight flight segments interspersed with stereotyped changes in heading termed saccades. Each saccades is a rapid maneuver in which the fly turns 90o in less than 50 […]
Some Like It Hot, Some Like It Cold Hsp Gene Expression in Ectothermic Marine Organisms
HOFMANN, G.E.; University of California, Santa Barbara: Some Like It Hot, Some Like It Cold: Hsp Gene Expression in Ectothermic Marine Organisms The goal of my research program is to employ biochemical and molecular techniques to gain ecological insight into the role of temperature in setting species� distribution patterns in the marine environment. The central […]
Physiological causes and consequences of social status in rainbow trout
GILMOUR, K.M.; Carleton University: Physiological causes and consequences of social status in rainbow trout When rainbow trout (Oncorhynchus mykiss) are held in small groups, they form linear dominance hierarchies. The most dominant fish holds the best position in the environment, gains the largest share of food and exhibits aggression towards fish lower in the hierarchy. […]
