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Full-Text Articles in Life Sciences
Sex Ratio: Adaptive Response To Population Fluctuation In Pandalid Shrimp, Eric Charnov, Daniel Gotshall, Jack Robinson
Sex Ratio: Adaptive Response To Population Fluctuation In Pandalid Shrimp, Eric Charnov, Daniel Gotshall, Jack Robinson
Biology Faculty & Staff Publications
Pandalus jordani is a protandrus (sequential) hermaphrodite. Populations show large year-to-year variation in age composition. In response to this variation, individuals alter the age at which they change sex. This response is predicted by a genetic model that assumes an individual shrimp maximizes its genetic contribution to the next generation.
Facultative Sex Ratio And Population Dynamics, John Werren, Eric Charnov
Facultative Sex Ratio And Population Dynamics, John Werren, Eric Charnov
Biology Faculty & Staff Publications
No abstract provided.
Evolution Of Eusocial Behavior: Offspring Choice Or Parental Parasitism?, Eric Charnov
Evolution Of Eusocial Behavior: Offspring Choice Or Parental Parasitism?, Eric Charnov
Biology Faculty & Staff Publications
Assuming the subsocial route towards eusociality, I show that selection favors worker habits (under haplodiploidy) provided the mutant workers are able to bias the sex ratio towards sisters and/or selectively substitute their sons for brothers. If the original workers are not able to do this, selection does not favor the habit. However, under these conditions, selection is indifferent as to whether an individual rears offspring or sibs. This makes it easy for a mother to enlist her daughters services in rearing other offspring, since the daughter cannot evolve to stop the parental parasitism. These results deal with the origin of …
Sex-Ratio Selection In Eusocial Hymenoptera, Eric Charnov
Sex-Ratio Selection In Eusocial Hymenoptera, Eric Charnov
Biology Faculty & Staff Publications
No abstract provided.