Browsing by Journal Issue "scas/vol74/iss2"
Now showing items 1-8 of 8
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A Study of the Morphological and Physiological Change in the Lamellibranch, Mytilus edulis, After 6-OH-DOPA Admisistration
Lateral ciliary activity was studied on gill preparations of the mussel Mytilus edulis. Electrical stimulation of the branchial nerve accelerated ciliary beating. The cilioexcitatory effect of electrical stimulation of the ... -
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Natural Hybridization Between Hulsea heterochroma and Hulsea vestita ssp. Calicarpha
Three hybridizing populations involving Hulsea heterochroma A. Gray and H. vestita Gray ssp. callicarpha (Hall) Wilken were discovered in the San Jacinto Mountains, Riverside Co, California. Population structure was ... -
Parasitism as an Indicator of Food Sources in a Cave-Adapted Salamander Habitat
Samples of the grotto salamander, Typhlotriton spelaeus Stejneger, 1893, comprising 119 specimens, colleced in Wet Cave, Shannon Co. Missouri, were examined for gastrointestinal parasites. The parasites recovered included ... -
Study on the Development of the Prior Residence Effect in Rainbow Trout (Salmo gairdneri)
Hatchery-raised rainbow trout (Salmo gairdneri, Richardson) were placed singly in small aquarium tanks for varying periods of time before the addition of a second fish. The effect of prior residence upon dominance between ... -
Taxonomic Characters of the Genus Ochodaeus Serville with Descriptions of Two New Species in the O. pectoralis LeConte Species Complex (Coleoptera: Scarabaeidae)
The mandibles, stridulatory peg, and male genitalia of the adults of eight species of Ochodaeus found in the United States have useful characters for the delineation of species and are described and figured. The most useful ... -
Two New Species of Errant Polychaetes From the Gulf of California, Mexico
Two new species of errant polychaetes from the Gulf of California, Mexico, are described. A key to the species of Malmgrenia is presented.