Haplochromis burtoni – Burton`s Mouthbrooder
... and control areas of territory and resources (food). In contrast, nonterritorial males are smaller, less aggressive, camouflage coloured and similar in appearance to females. They only gain access to food when mistaken for females. The outcome of male-male agonistic interactions influence which indi ...
... and control areas of territory and resources (food). In contrast, nonterritorial males are smaller, less aggressive, camouflage coloured and similar in appearance to females. They only gain access to food when mistaken for females. The outcome of male-male agonistic interactions influence which indi ...
PowerPoint Presentation - What is an adaptation?
... • Genes replicate and change in frequency after selection on individuals. Individuals replicate faster than groups. ...
... • Genes replicate and change in frequency after selection on individuals. Individuals replicate faster than groups. ...
Patterns of sexual dimorphism in Mexican alligator lizards, Barisia
... geographic variation in female reproductive traits. In conclusion, natural selection for increased body size in females (due to increased fecundity of large females) may be paralleled by sexual selection in males for larger body size (due to the advantage gained during intraspecific agonistic behavi ...
... geographic variation in female reproductive traits. In conclusion, natural selection for increased body size in females (due to increased fecundity of large females) may be paralleled by sexual selection in males for larger body size (due to the advantage gained during intraspecific agonistic behavi ...
Chapter 51 Presentation
... ritualistic type of competition that determines which competitors gain access to a resource such as food or mates. The outcome can be determined by strength, size, or in the form of horns, teeth, etc. They can be psychological in appearance. travismulthaupt.com ...
... ritualistic type of competition that determines which competitors gain access to a resource such as food or mates. The outcome can be determined by strength, size, or in the form of horns, teeth, etc. They can be psychological in appearance. travismulthaupt.com ...
Male reproductive investment and queen mating
... reproductive success. For example, AG compounds form mating plugs in ants and bumblebees (Brown et al., 2002; Duvoisin et al., 1999; Monnin and Peeters, 1998). In the latter, mating plugs contain an antiaphrodisiac, reducing the willingness of the female to mate again within her short time window of ...
... reproductive success. For example, AG compounds form mating plugs in ants and bumblebees (Brown et al., 2002; Duvoisin et al., 1999; Monnin and Peeters, 1998). In the latter, mating plugs contain an antiaphrodisiac, reducing the willingness of the female to mate again within her short time window of ...
The Chinese Crocodile Lizard
... maturity is reached in two to three years. I estimate longevity to be well over 10 years. The oldest individual in my breeding colony, the imported adult male I purchased in 1987, could be more then 15 years old, based on the estimated growth rate in the wild. Discussion I can say that in working w ...
... maturity is reached in two to three years. I estimate longevity to be well over 10 years. The oldest individual in my breeding colony, the imported adult male I purchased in 1987, could be more then 15 years old, based on the estimated growth rate in the wild. Discussion I can say that in working w ...
Female modulation of reproductive rate and its role in postmating
... female interactions have been shown to evolve rapidly under positive selection and to be polymorphic (Vacquier 1998; Palumbi 1999; Swanson & Vacquier 2002a, 2002b) and often species-specific (Chen 1984; Vacquier 1998), demonstrating the importance of cryptic isolation. However, the general role of c ...
... female interactions have been shown to evolve rapidly under positive selection and to be polymorphic (Vacquier 1998; Palumbi 1999; Swanson & Vacquier 2002a, 2002b) and often species-specific (Chen 1984; Vacquier 1998), demonstrating the importance of cryptic isolation. However, the general role of c ...
Black-and-white Ruffed Lemur: Size: Head and body 51
... bright blue bony ridges on either side. This mimics a snarl and the brightness and size of these ridges indicates the male's age and condition. The whole is framed with bright orange chin and side-whiskers. His colours brighten when he is excited: becoming bluer on his rump and chest, and red dots m ...
... bright blue bony ridges on either side. This mimics a snarl and the brightness and size of these ridges indicates the male's age and condition. The whole is framed with bright orange chin and side-whiskers. His colours brighten when he is excited: becoming bluer on his rump and chest, and red dots m ...
Nephila clavipes (Golden Orb Weaver)
... than the females and once they reach maturity cannot produce webs capable of capturing prey. The males must then depend on females for survival by living in their webs and feeding off their prey. This allows the males to be present when the female achieves maturity to mate. They create webs that aid ...
... than the females and once they reach maturity cannot produce webs capable of capturing prey. The males must then depend on females for survival by living in their webs and feeding off their prey. This allows the males to be present when the female achieves maturity to mate. They create webs that aid ...
Intrapopulation variation in life history traits of Boa constrictor
... Margarita Chiaraviglio, Miguel Bertona, Mariano Sironi, Sergio Lucino ...
... Margarita Chiaraviglio, Miguel Bertona, Mariano Sironi, Sergio Lucino ...
Brush-tailed Phascogale (Phascogale tapoatafa tapatafa
... They lead solitary lifestyles with large ranges of 20 - 70 hectares for females or double that for males. The breeding season is restricted to a three week time period between mid-May to early July. Thirty days after mating, three to eight young are born. The female raises her young alone, first wit ...
... They lead solitary lifestyles with large ranges of 20 - 70 hectares for females or double that for males. The breeding season is restricted to a three week time period between mid-May to early July. Thirty days after mating, three to eight young are born. The female raises her young alone, first wit ...
Behavior can be learned
... • Nongenetic factors can modify how instructions are carried out • Some behavior is more genetic than learned and visa versa B. The purpose of behavior is to enhance survival • Genes for behavior have evolved by natural selection in order to enhance survival ...
... • Nongenetic factors can modify how instructions are carried out • Some behavior is more genetic than learned and visa versa B. The purpose of behavior is to enhance survival • Genes for behavior have evolved by natural selection in order to enhance survival ...
Turkey - Rolling Hills Zoo
... Males are often so consumed by performing their mating rituals that they forego eating. “The breast sponge, a ball of fatty reserve located at the juncture of the neck and breast” provides them with energy (Hlavachick 8). ...
... Males are often so consumed by performing their mating rituals that they forego eating. “The breast sponge, a ball of fatty reserve located at the juncture of the neck and breast” provides them with energy (Hlavachick 8). ...
Behavior
... Intraspecific – exclude only members of the same species. Interspecific – exclude any individual that might be after the resource being guarded, regardless of species. ...
... Intraspecific – exclude only members of the same species. Interspecific – exclude any individual that might be after the resource being guarded, regardless of species. ...
Practice Midterm Solutions
... with a pure-breeding yellow worm. The F1 offspring from this cross are all red. You self-fertilize one of these F1 offspring, and you see the following phenotypic ratios in the offspring: 207 red: 68 brown: 93 yellow. Which of the following mechanisms do you think controls skin color in this species ...
... with a pure-breeding yellow worm. The F1 offspring from this cross are all red. You self-fertilize one of these F1 offspring, and you see the following phenotypic ratios in the offspring: 207 red: 68 brown: 93 yellow. Which of the following mechanisms do you think controls skin color in this species ...
The Loveless Winter of a Lightless Firefly
... MEDFORD, MA -- Jennifer Rooney and Sara Lewis at Tufts University report on the curious mating behavior of Ellychnia corrusca, behavior that may explain this firefly's inability to produce light in adulthood. It has been believed since the early 1900's that E. corrusca spend the winter as adults, an ...
... MEDFORD, MA -- Jennifer Rooney and Sara Lewis at Tufts University report on the curious mating behavior of Ellychnia corrusca, behavior that may explain this firefly's inability to produce light in adulthood. It has been believed since the early 1900's that E. corrusca spend the winter as adults, an ...
Behavior - Canyon ISD
... • Sometimes involves a test of strength, more often the engage in threat displays that make them look large and fierce – Severity depends on the amount, type, and availability of the resource • Male ground squirrels kill others for females because they are only in heat for a few hours each year • Us ...
... • Sometimes involves a test of strength, more often the engage in threat displays that make them look large and fierce – Severity depends on the amount, type, and availability of the resource • Male ground squirrels kill others for females because they are only in heat for a few hours each year • Us ...
breeding systems and reproductive strategies of mammals
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
... • Description of mating behavior and parental care by both sexes • Parental care & potential rate of reproduction of each sex • If males contribute no parental care (many mammals), they have high potential rate of reproduction; fitness limited by access to females; males most competitive sex ...
Structure of mating systems
... both meiosis and random gametes fusing. This is one form of self-fertilization. This is asexuality in which only sex (the mating of different individuals) is lacking. Now let’s go back and think about sex. Fitness, in the evolutionary sense, is measured by the number of copies of an individual’s gen ...
... both meiosis and random gametes fusing. This is one form of self-fertilization. This is asexuality in which only sex (the mating of different individuals) is lacking. Now let’s go back and think about sex. Fitness, in the evolutionary sense, is measured by the number of copies of an individual’s gen ...
Unit 3 - Section 9.1 Types of Selection Overheads
... Populations have many phenotypes and genotypes. If a single allele improves survivability, even slightly, it gives a selective advantage. As a result, the frequency of that allele will increase in the population AND in subsequent generations. Natural selection causes changes in the allele frequencie ...
... Populations have many phenotypes and genotypes. If a single allele improves survivability, even slightly, it gives a selective advantage. As a result, the frequency of that allele will increase in the population AND in subsequent generations. Natural selection causes changes in the allele frequencie ...
Outline of: Bryja, J., Patzenhauerova, H., Albrecht, T., Mosansky, L
... 1. One of our major concerns with the results of this study were the small sample sizes used to collect the data. The largest sample size was 46 litters for one of the sub-species. Yet one of the sub-species only had 22 litters total for testing. We do not believe that either of these are large enou ...
... 1. One of our major concerns with the results of this study were the small sample sizes used to collect the data. The largest sample size was 46 litters for one of the sub-species. Yet one of the sub-species only had 22 litters total for testing. We do not believe that either of these are large enou ...
Animal Behavior
... – Choose the most nutritious available that will be the least energetically expensive to consume ...
... – Choose the most nutritious available that will be the least energetically expensive to consume ...
File
... Kin Selection: selection for behaviors that would increase the reproductive success of relatives even at the cost to the performer Hamilton’s Rule: for an altruistic behavior to be adaptive, the cost to the performer must be less than the benefit to the recipient times the degree of relatedness betw ...
... Kin Selection: selection for behaviors that would increase the reproductive success of relatives even at the cost to the performer Hamilton’s Rule: for an altruistic behavior to be adaptive, the cost to the performer must be less than the benefit to the recipient times the degree of relatedness betw ...