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Swordtail - Research@JCU
... Swordtails, notably the males, are aggressive to conspecifics and other similar-sized or smaller species. An Australian study showed swordtails, in combination with other poeciliids, displaced native rainbowfishes and blue-eyes by fin-nipping (Warburton and Madden 2003). Similar deleterious competit ...
... Swordtails, notably the males, are aggressive to conspecifics and other similar-sized or smaller species. An Australian study showed swordtails, in combination with other poeciliids, displaced native rainbowfishes and blue-eyes by fin-nipping (Warburton and Madden 2003). Similar deleterious competit ...
Learning and Mate Choice
... three-spined stickleback (Gasterosteus aculeatus, Gasterosteidae), a species in which males care intensively for the young. In several lakes in British Columbia, Canada, three-spined sticklebacks occur in sympatric species-pairs. These pairs consist of a large-bodied invertebrate-feeding benthic spe ...
... three-spined stickleback (Gasterosteus aculeatus, Gasterosteidae), a species in which males care intensively for the young. In several lakes in British Columbia, Canada, three-spined sticklebacks occur in sympatric species-pairs. These pairs consist of a large-bodied invertebrate-feeding benthic spe ...
Predation environment predicts divergent life-history
... An organism's life-history strategy is defined by ontogenetic and reproductive traits that determine individual lifetime reproductive success (Roff 1992; Stearns 1992). Such traits are typically under strong selection and are expected to produce reproductive schedules that optimize fitness in the fa ...
... An organism's life-history strategy is defined by ontogenetic and reproductive traits that determine individual lifetime reproductive success (Roff 1992; Stearns 1992). Such traits are typically under strong selection and are expected to produce reproductive schedules that optimize fitness in the fa ...
Bosk`s fringe-toed lizard Acanthodactylus boskianus
... side. The lizard then retrieved the wasp, positioned it head first for swallowing and, after a pause, downed the entire wasp in a few gulps. (Experienced naturalists will recognise that it would have been extremely difficult to observe this level of detail in the absence of video footage that could ...
... side. The lizard then retrieved the wasp, positioned it head first for swallowing and, after a pause, downed the entire wasp in a few gulps. (Experienced naturalists will recognise that it would have been extremely difficult to observe this level of detail in the absence of video footage that could ...
Natural selection
... pressures on other species Which may change the selection pressures on the first For example, insectivorous bats locate flying moths by sonar In response, some moth species have evolved the ability to detect the ultrasonic signals emitted by the bat And undertake evasive action with a fast e ...
... pressures on other species Which may change the selection pressures on the first For example, insectivorous bats locate flying moths by sonar In response, some moth species have evolved the ability to detect the ultrasonic signals emitted by the bat And undertake evasive action with a fast e ...
Ground Rules, exams, etc. (no “make up” exams) Text: read
... Delayed sexual maturity, Small clutch size, Parental care ...
... Delayed sexual maturity, Small clutch size, Parental care ...
Scientific Notes 615 PARASITISM OF ORCHELIMUM KATYDIDS
... lineifrons with the other parasitized Orchelimum species (O. pulchellum, O. silvaticum, and O. agile) must remain tentative, although all the puparia and reared adults appeared to be the same. The only hosts previously known for this fly are Neoconocephalus katydids, especially N. triops (T. J. Walk ...
... lineifrons with the other parasitized Orchelimum species (O. pulchellum, O. silvaticum, and O. agile) must remain tentative, although all the puparia and reared adults appeared to be the same. The only hosts previously known for this fly are Neoconocephalus katydids, especially N. triops (T. J. Walk ...
Lesser Kudu Tragelaphus imberbis australis
... another male near a female, they will lock horns and attempt to force each other into submission. The larger male usually wins, and establishes breeding rights with the female. The male and female will also engage in a dominance display, in which both antelope will stand fully erect and attempt to s ...
... another male near a female, they will lock horns and attempt to force each other into submission. The larger male usually wins, and establishes breeding rights with the female. The male and female will also engage in a dominance display, in which both antelope will stand fully erect and attempt to s ...
Sex in a material world: why the study of sexual reproduction and
... contemporary emphasis on the material costs associated with sexually selected traits (e.g. condition-dependence of exaggerated ornaments). Nutritional ecology suggests that material costs related to sex-specific reproductive traits should be linked to quantifiable underlying differences in the relat ...
... contemporary emphasis on the material costs associated with sexually selected traits (e.g. condition-dependence of exaggerated ornaments). Nutritional ecology suggests that material costs related to sex-specific reproductive traits should be linked to quantifiable underlying differences in the relat ...
Eusociality: Origin and consequences Edward O. Wilson* and Bert Ho¨lldobler
... elevated, say by lower individual dispersal rates, relatedness can bring alleles for presociality and eusociality together more quickly. If it brings such genes together more frequently due to shared microhabitat preference, mate choice, or other biological traits, it can have the same effect. Relat ...
... elevated, say by lower individual dispersal rates, relatedness can bring alleles for presociality and eusociality together more quickly. If it brings such genes together more frequently due to shared microhabitat preference, mate choice, or other biological traits, it can have the same effect. Relat ...
Herpetological Bulletin
... latastei from Sedano valley (latitude 42º43’13’’N and longitude 3º45’03’’W), north-western Burgos, north of Spain, are detailed. The first observation occurred in September 2004 when several pregnant females were kept in glass terrariums (54 x 30 x 30 cm) during the last 20 days of gestation for rep ...
... latastei from Sedano valley (latitude 42º43’13’’N and longitude 3º45’03’’W), north-western Burgos, north of Spain, are detailed. The first observation occurred in September 2004 when several pregnant females were kept in glass terrariums (54 x 30 x 30 cm) during the last 20 days of gestation for rep ...
steller sea lion - Point Blue Conservation Science
... U.S. The differentiation is based primarily on genetic and physical differences, but also on differing population trends in t he two regions. There are approximately 39,000-45,000 Steller sea lions in the Western U.S. and 44,500-48,000 in the Eastern U.S. The Western DPS declined by 75% between 1976 ...
... U.S. The differentiation is based primarily on genetic and physical differences, but also on differing population trends in t he two regions. There are approximately 39,000-45,000 Steller sea lions in the Western U.S. and 44,500-48,000 in the Eastern U.S. The Western DPS declined by 75% between 1976 ...
Grether, G.F. 2010. Sexual selection and speciation. In
... ecological (niche) divergence. Models based only on disruptive sexual selection yield sympatric speciation under more restrictive conditions than models that also allow ecological character displacement to occur. Models by Sergey Gavrilets and colleagues suggest that the sexual conflict mode of sexu ...
... ecological (niche) divergence. Models based only on disruptive sexual selection yield sympatric speciation under more restrictive conditions than models that also allow ecological character displacement to occur. Models by Sergey Gavrilets and colleagues suggest that the sexual conflict mode of sexu ...
Levels of Selection - Evolutionary Biology
... • shifts from individual life to life in social groups • part-time social groups of (generally) unrelated individuals are formed during sexual reproduction • r is usually low between parents (that is kind of the point of sex) • r relatively high between offspring, and parents and offspring (but t ...
... • shifts from individual life to life in social groups • part-time social groups of (generally) unrelated individuals are formed during sexual reproduction • r is usually low between parents (that is kind of the point of sex) • r relatively high between offspring, and parents and offspring (but t ...
Biological Markets: Supply and Demand Determine the Effect of
... the effectof supply and demand,is fundamentallydifferent from the centraltheme of currentmodels of cooperation, partnerverification.The models thereforedo not compete with each other, but rather apply to different biologicalproblems.How one judges the biologicalrelevance is a matter of taste. We thi ...
... the effectof supply and demand,is fundamentallydifferent from the centraltheme of currentmodels of cooperation, partnerverification.The models thereforedo not compete with each other, but rather apply to different biologicalproblems.How one judges the biologicalrelevance is a matter of taste. We thi ...
A stimulus is a(an)
... themselves to sing. sounds produced by other birds cause young song sparrows to sing. song development in this species involves both innate behavior and learning. ...
... themselves to sing. sounds produced by other birds cause young song sparrows to sing. song development in this species involves both innate behavior and learning. ...
Life history adaptations to seasonality - BORA
... These ideas were pursued in papers 3 and 4 which are based on a life history model of the abundant Southern Ocean copepod Calanoides acutus. Life history tradeoffs arise in the model because bioenergetics, developmental constraints, and interactions with the environment (temperature, food availabili ...
... These ideas were pursued in papers 3 and 4 which are based on a life history model of the abundant Southern Ocean copepod Calanoides acutus. Life history tradeoffs arise in the model because bioenergetics, developmental constraints, and interactions with the environment (temperature, food availabili ...
Clever Monkeys Part 5
... Behavior constitutes a phenotype, just like observable, physical traits do. Individuals whose behavioral phenotypes increase reproductive fitness pass on their genes at a faster rate. Genes do not code for specific behaviors (i.e. aggression, cooperation, etc.) Natural selection acts on genetic ...
... Behavior constitutes a phenotype, just like observable, physical traits do. Individuals whose behavioral phenotypes increase reproductive fitness pass on their genes at a faster rate. Genes do not code for specific behaviors (i.e. aggression, cooperation, etc.) Natural selection acts on genetic ...
Chapter_6_7online3
... Behavior constitutes a phenotype, just like observable, physical traits do. Individuals whose behavioral phenotypes increase reproductive fitness pass on their genes at a faster rate. Genes do not code for specific behaviors (i.e. aggression, cooperation, etc.) Natural selection acts on genetic ...
... Behavior constitutes a phenotype, just like observable, physical traits do. Individuals whose behavioral phenotypes increase reproductive fitness pass on their genes at a faster rate. Genes do not code for specific behaviors (i.e. aggression, cooperation, etc.) Natural selection acts on genetic ...
Fact sheet Mouflon
... Ovenden 1985]. Horns are perennial and grow lifelong, faster when animals are young and slowing up with age to only millimetres after the 8th year. During wintertime horns’ growth slows down, too. ...
... Ovenden 1985]. Horns are perennial and grow lifelong, faster when animals are young and slowing up with age to only millimetres after the 8th year. During wintertime horns’ growth slows down, too. ...
Putting Eggs in One Basket: Ecological and Evolutionary
... predation on their nests or on themselves, known as the fecundity-survival hypothesis. For example, females in a population of tropical pythons (Liasis fuscus) chose between two types of nest locations: cool sites, which carry a lower risk of egg predation but require costly brooding by the female; ...
... predation on their nests or on themselves, known as the fecundity-survival hypothesis. For example, females in a population of tropical pythons (Liasis fuscus) chose between two types of nest locations: cool sites, which carry a lower risk of egg predation but require costly brooding by the female; ...
PowerPoint Presentation - Natural Selection
... Neck of Giraffe Antibiotic resistance of bacteria Moth color (melanin) Camouflage/Mimics Many sexually selected traits ...
... Neck of Giraffe Antibiotic resistance of bacteria Moth color (melanin) Camouflage/Mimics Many sexually selected traits ...
(Part 2) Kin selection
... • nest sites difficult to obtain, create and maintain • finding a mate is difficult • scarcity of food • defense of nests ...
... • nest sites difficult to obtain, create and maintain • finding a mate is difficult • scarcity of food • defense of nests ...
Differential infanticide by adult curly
... niles and adults were within 1-3 cm of each other, even smaller, averaging 38 mm SVL. The same was and on several occasions juveniles were seen true of the L. schreibersi stimuli, where both perched on top of adult females. During focal attached and ignored juveniles averaged 34 mm observations, 47% ...
... niles and adults were within 1-3 cm of each other, even smaller, averaging 38 mm SVL. The same was and on several occasions juveniles were seen true of the L. schreibersi stimuli, where both perched on top of adult females. During focal attached and ignored juveniles averaged 34 mm observations, 47% ...
Behavioral ecology
![](https://commons.wikimedia.org/wiki/Special:FilePath/Aptenodytes_forsteri_-Snow_Hill_Island,_Antarctica_-juvenile-8.jpg?width=300)
Behavioral ecology is the study of the evolutionary basis for animal behavior due to ecological pressures. Behavioral ecology emerged from ethology after Niko Tinbergen outlined four questions to address when studying animal behavior which are the proximate causes, ontogeny, survival value, and phylogeny of behavior.If an organism has a trait which provides them with a selective advantage (i.e. has an adaptive significance) in a new environment natural selection will likely favor it. This was originally proposed as the theory of natural selection by Charles Darwin. Adaptive significance therefore refers to the beneficial qualities, in terms of increased survival and reproduction, a trait conveys. Genetic differences in individuals lead to behavioral differences that in turn drive differences in adaptation, reproductive success, and ultimately evolution.Individuals are always in competition with others for limited resources, including food, territories, and mates. Conflict will occur between predators and prey, between rivals for mates, between siblings, mates, and even between parents and their offspring.