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Animal Sciences

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Masters Theses

1976

Ichthyology

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The Effect Of Social Rank Of Male Swordtails (Xiphophorus Helleri) On Sexual Behavior, Janet N. Marum Jan 1976

The Effect Of Social Rank Of Male Swordtails (Xiphophorus Helleri) On Sexual Behavior, Janet N. Marum

Masters Theses

The relationship between social rank and sexual behavior of the male swordtail (Xiphophorus helleri) was studied. Initially three tanks were established with three males and two females in each. Social rank, aggressive and sexual levels were recorded by observation of the interactions which occurred in the tanks. A second series of observations were made with the fish regrouped according to their initial rank, that is, dominant males grouped together, middle ranking males together and the lowest ranking males together. Aggressive and sexual levels were the highest for the highest ranking males in all tanks and in both trials, …


A Comparison Of Age And Growth Of Largemouth Bass (Micropterus Salmoides) In Two Ponds In East-Central Illinois, Mark Fevold Nelson Jan 1976

A Comparison Of Age And Growth Of Largemouth Bass (Micropterus Salmoides) In Two Ponds In East-Central Illinois, Mark Fevold Nelson

Masters Theses

No abstract provided.