Related Experiment Video
Updated: Apr 28, 2026

Basic Methods for the Study of Reproductive Ecology of Fish in Aquaria
Published on: July 20, 2017
Interrelationships of dominance and territorial behaviour in the pupfish, Cyprinodon variegatus
1Department of Zoology, University of the West Indies, Kingston 7, Jamaica.
Abstract:
Under laboratory conditions, Cyprinodon variegatus establishes either a dominance or territorial mating system. In the dominance system, one male usually has complete access to receptive females, while in the territorial system, several males have equal access. Four factors were observed to enhance a subdominant's ability to establish a territory and improve his reproductive success; increasing the number of conspecific intruders, increasing the available area, the presence of partial barrier, and the presence of a receptive female.
Related Concept Videos
Fixed Action Patterns
Hybrid Zones
Osmoregulation in Fishes
Relationship Formation
Testing a Claim about Population Proportion
There are two methods of testing a claim about a population proportion: (1) Using the sample proportion from the data where a binomial distribution is approximated to the normal distribution and (2) Using the binomial probabilities calculated from the data.
The first method uses normal distribution as an approximation to the binomial distribution. The requirements are as follows: sample size is large...
Background and Environment Affect Phenotype
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...

