Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Animal Sciences (39)
- Plant Sciences (33)
- Physical Sciences and Mathematics (15)
- Medicine and Health Sciences (13)
- Environmental Sciences (12)
-
- Agriculture (10)
- Marine Biology (9)
- Microbiology (8)
- Earth Sciences (7)
- Ornithology (7)
- Ecology and Evolutionary Biology (6)
- Entomology (6)
- Public Health (6)
- Forest Sciences (4)
- Pharmacology, Toxicology and Environmental Health (3)
- Zoology (3)
- Botany (2)
- Diseases (2)
- Food Science (2)
- Genetics and Genomics (2)
- Soil Science (2)
- Weed Science (2)
- Agricultural Science (1)
- Alternative and Complementary Medicine (1)
- Biochemistry, Biophysics, and Structural Biology (1)
- Biotechnology (1)
- Education (1)
- Engineering (1)
- Keyword
-
- Biological sciences (90)
- Health and environmental sciences (19)
- Gulf of Mexico (6)
- Pure sciences (6)
- Cancer (5)
-
- Texas (5)
- Cover crops (4)
- Education (4)
- Genetics (4)
- Phytoremediation (4)
- Rio Grande Valley (4)
- South Texas (4)
- Aedes aegypti (3)
- Animal behavior (3)
- Applied sciences (3)
- Arabidopsis thaliana (3)
- Behavior (3)
- Biology (3)
- Earth sciences (3)
- Ecology (3)
- Insects (3)
- Integrated pest management (3)
- Lower Rio Grande Valley (3)
- Microalgae (3)
- Oxidative stress (3)
- PI3K (3)
- Red snapper (3)
- Agriculture (2)
- Amyloid beta (2)
- Apoptosis (2)
- Publication Year
Articles 181 - 184 of 184
Full-Text Articles in Biology
Development Of Mass-Rearing Techniques For Aphelinus Asychis Walker For Use In A Biological Control Program Against Russian Wheat Aphid, Robin Lynn Whitaker-Deerberg
Development Of Mass-Rearing Techniques For Aphelinus Asychis Walker For Use In A Biological Control Program Against Russian Wheat Aphid, Robin Lynn Whitaker-Deerberg
Theses and Dissertations - UTB/UTPA
Mass-rearing techniques were developed for the parasitoid Aphelinus asychis Walker (Hymenoptera:Aphelinidae) for use in a biological control program against the Russian wheat aphid, Diuraphis noxia (Mordvilko) (Homoptera:Aphididae). Daily ovipositional activity, host-feeding behavior, effects of population density in the rearing cages and effects of cold storage on mummies were determined.
Daily ovipositional activity peaked at day 5 after emergence of the parasitoid. Ninety-two percent of mummies resulting from ovipositional activity were oviposited the first 13 days of the parasitoid’s life. Since mummification occurred 11 days after oviposition and emergence occurred 11 days after mummification, day 24 was determined to be the …
Seasonal Distribution Of The Ichthyofauna Of Santa Ana National Wildlife Refuge, Alamo, Texas, Matthew Albert Ciomperlik
Seasonal Distribution Of The Ichthyofauna Of Santa Ana National Wildlife Refuge, Alamo, Texas, Matthew Albert Ciomperlik
Theses and Dissertations - UTB/UTPA
This study investigated the small aquatic ecosystems of Santa Ana National Wildlife Refuge, located in a predominantly agricultural area of the Lower Rio Grande Valley, Texas. Fishes and water quality data were collected for 13 months to determine the status of fish populations and the factors which influence their distributions on the refuge.
Sixteen fish species were collected during the study, however, more than 20 species are known to inhabit the Rio Grande in the vicinity of the refuge. Water source played a major role in influencing fish species richness in these aquatic ecosystems. Diverted river water offered the best …
Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros
Coastal Vegetational Communities Of The Two Texas Barrier Islands, Boca Chica And Brazos, Baltazar Cisneros
Theses and Dissertations - UTB/UTPA
Two Texas barrier islands, Boca Chica and Brazos, have unique coastal vegetational communities that may be Influenced by several environmental factors. These environmental factors include temperature, precipitation, wind speed, sunshine exposure, day length, and dune height. The purpose of this investigation was to determine the total number of coastal plant species per station, season, and year and to consider environmental factors that may significantly affect the number and pattern of coastal species. Coverage comparison between aerial and land sampling and aerial vegetational zonation was also considered.
Results indicated the presence of 21 angiosperm families and a total of 54 species. …
Seasonal Periodicity Of Dominant, Benthic, Marine Macroalgae Of The North Jetty Of Brazos Santiago Pass, Texas, As Related To Environmental Factors, Gary J. Penn
Theses and Dissertations - UTB/UTPA
The seasonality of marine algae may be influenced by a large number of factors. These factors Include water clarity, water temperature, dissolved oxygen, conductivity, salinity, light Intensity, precipitation, air temperature, water turbulence, and daylength. The purpose of this study was to determine seasonal patterns and the effect of these variables on the algae.
The results Indicate that 24 dominant, benthic, genera of algae have two seasonal populations. A winter-spring population Includes algae in abundance between January and May. A fall population includes algae in abundance during September, October and November, Results of environmental studies indicate day-length dominant factors in algal …