Life Sciences Commons^™

Gold In The Gulf: A History Of The Rio Grande Valley Shrimp Industry, Thomas M. Blackwell

Theses and Dissertations - UTB/UTPA

Competition over dwindling fishery stocks has become acute. Shrimp in the Gulf of Mexico is part of that competition. Trawling operations shifted to Brownsville. A dispute between the newly arrived louisiana shrimpers and Texas operators drove many of the newcomers south to the Mexican coastline. This led almost inevitably to a conflict with Mexico. That it was almost inevitable was also due to the fact that the two nations had differing interpretations of territorial limits.

The confrontations themselves were often full of adventure with charges, counter-charges, and sometimes bullets hurled through the air. Because of this nation's own past actions, …

Bait Shyness And Neophobia In Several Species Of Osteichthyes: An Extension Of Taste Aversion Studies To The Superclass Pices, Brent W. Roberts

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Three experiments were conducted with five species of tropical fish to investigate the phenomena of taste aversion and food neophobia. In addition, an experiment determined specifically if position in the tank could acquire conditioned aversive properties.

In Experiment 1 , four habituated fish were fed novel meat-flavored pellets on the treatment day. Six were made ill within 30, 60, or 90 minutes (2 subjects each) by intragastric administration of syrup or Epicac. The following day all were fed familiar commercial pellets. On the second day after treatment, all were offered the meat-flavored pellets. Results showed longer latencies, more tasting, and …

Vegetational Communities On An Abandoned Farm In Van Buren County, Michigan, Larry G. Visser

Masters Theses

Introduction

Several studies have been made of xeric forests in southern Michigan which have developed through secondary succession following the cutting of the presettlement vegetation. Brewer et al. (1973) described such an area in Allegan County, Michigan which was dominated by presettlement pine and is now dominated by oak. The oak forests of the Harvey Ott Preserve in Calhoun County, Michigan have been described by Catana (1967). Studies of the oak forests in the Haven Hill area in southeastern Michigan have been made by Thompson (1953). In addition to these studies of xeric forests in southern Michigan, extensive studies of …

The Effect Of Novelty And Familiarity On The Conditioning Of Learned Aversions To Gustatory And Nongustatory Stimuli In Coyotes (Canis Latrans), William Eric Swanson

Theses Digitization Project

No abstract provided.

Stress Reactions By Black Females In Viewing Conflict And No-Conflict Videotapes Of A Black Male Or Female As A Function Of The Subject's Blood Pressure Level And Of History Of Stress, Andrea Jean James-Andrews

Dissertations, Theses, and Masters Projects

No abstract provided.

Material-Specific Processes In Tactile Short-Term Memory, Christina Anne Meyers

Dissertations and Theses

Studies concerning tactile short-term memory (short-term memory or the sense of touch) have often been contradictory. Some of these studies support the existence of modality-specific tactile memory, a separate, independent storage system for tactile information. Other studies do not support such a system. Further, confusion has arisen regarding the tactile test materials, since many of them use common shapes which are easily labeled verbally. It is hypothesized that information which can be labeled is stored in material-specific verbal memory in the left hemisphere, while patterned or spatial information is stored in material-specific nonverbal memory in the right hemisphere.

This paper …

Social Behavior In A Group Of Captive Bobcats : A Study In The Sociability Of Felids, Lon W. House

Dissertations and Theses

A group of four captive bobcats (Felis rufus), two males and two females, was observed for 102.67 hours over the period of one year. A pilot study was conducted consisting of a minimum of three separate observations for each daylight hour. The remaining observations were concentrated during the early morning hours immediately after feeding, the time of maximum activity and social interaction.