9 research outputs found
Golden Shiner, Bluegill, and Green Sunfish Production in a small Lake
A small lake located 43 miles southeast of Dallas in KaufÂman County, owned by Dr. Ozro T. Woods, was treated with rotenone in February, 1952. With a surface area of about two acres, the lake contained 5.4 acre-feet of water, with a maximum depth of six feet. It was constructed in 1947 and filled the same year
Golden Shiner, Bluegill, and Green Sunfish Production in a small Lake
A small lake located 43 miles southeast of Dallas in KaufÂman County, owned by Dr. Ozro T. Woods, was treated with rotenone in February, 1952. With a surface area of about two acres, the lake contained 5.4 acre-feet of water, with a maximum depth of six feet. It was constructed in 1947 and filled the same year
A Gastropod New To The United States
A species of branchiate snail new to the molluscan fauna of the United States, Hydrobia palomasensis (Pils.) (fide Pilsbry), was collected near Fort Davis, Texas, in April, 1936, by Mr. Ottys Sanders of Dallas. The specimens were found in a small canyon opening into Limpia Canyon, about five miles north of Fort Davis. The present writer, on a trip to this same locality last September, found this species in abundance
Shell Repair In Polygyra Texasiana
It has long been known, on the basis of field observations and laboratory experiments, that snails and clams are able to repair breaks in their shells. However, with the exception of Andrews\u27 (\u2734, \u2735) excellent work on shell-repair of West Indian gastropoda, and Daniel\u27s (\u2712) studies, practically all observations have been made upon European mollusks
An Annotated List Of The Snails Of Dallas County Texas
Although great advances have been made in the study of many groups of Texas animals, the knowledge of the MolÂlusca is still very meager....[I]t is apparent that the study of Texas snails is only just begun and that there exists a need for careful and continued collecting in numerous counties. A molluscan survey of indiÂvidual counties has been started by the senior author with the hope of ultimately bringing together a large mass of data to support a comprehensive and authentic treatment of the snails of Texas
Biometrical Study Of Goniobasis Comalensis Pilsbry From Two Diverse Habitats
Much has been written on the part played by the environment in changing secondary characters of the more plastic invertebrates….During February, 1934, a collecting trip was made to San Marcos, Texas, where two contrasting aquatic habitats were found, both of which were inhabited by the branchiate snail Goniobasis comalensis. Several hundred individuals were collected from each habitat, the shells measured, and a statistical study made of size differences