A-8. The Ohio Journal of Science Vol. 95(2) FIELD TRIPS Sunday, April 30, 1995 Index to Session Abstracts PLANT SCIENCES FIELD TRIP: Saturday, April 29,1995 AN OLD-GROWTH FOREST COMMUNITY IN NORTHEASTERN OHIO Page - Session Title 8:30 AM, Sunday, April 30, 1995 Arranged by: ALLISON W. CUSICK, Chief Botanist, Division of 9 - Animal Science - Ecology Natural Areas and Preserves, The Ohio Department of 10 - Animal Science - Systematics Natural Resources 12 - Applied Social Science: Improving the Human Condition Transportation will be in private vehicles leaving from Roush 13 - Aquatic Biology - Microbiology Hall at Otterbein College at 8:30 AM; return by 4:00 PM. Travel time is approximately three hours round trip from Westerville. 14 - Biology: Genetics - Physiology Lunch is on your own. Carpooling is encouraged since park- 15 - Cardiovascular Disease: Testing, ing is limited at the destination. Maps will be provided. Analysis, Application Mature forest communities are rarities in any part of the State 16 - Cell Development, Proteins, of Ohio. We will visit a remarkable old-growth oak forest on and Diseases the Wisconsinan till plain of northeastern Ohio in Wayne County. The understory and herbaceous layers are classic in 18 - Ecology and Environmental Science composition and not altered by browsing or the invasion of 20 - Education Division nonindigeous species. The large block of woodland also pro- 21 - Education Division vides refuge for neotropical migrant birds in the midst of 23 - Engineering agricultural land. This forest is a recent addition to the state 24 - Environmental Issues system of nature preserves. No collecting will be permitted. 25 - Exploration of Culture: From Textiles Attendance is limited to the first 30 registered participants. to Television GEOLOGY FIELD TRIP: 26 - Geography AN UPPER DEVONIAN-LOWER 27 - Geography MISSISSIPPIAN SEQUENCE IN 27 - Geology CENTRAL OHIO, WITH EMPHASIS 28 - Immunology: Viruses, Therapy ON THE BEDFORD AND BEREA and Research; Hormones: Physical, FORMATIONS Emotional, Developmental Effects 8:00 AM, Sunday, April 30, 1995 30 - Junior Academy Arranged by: LAWRENCE A. KRISSEK and KENNETH P. COATS, The 32 - Junior Academy Ohio State University 33- Physical and Mathematical Sciences Transportation will be in private vehicles leaving from 34 - Plant Sciences - Ecology Roush Hall at Otterbein College at 8:00 AM to visit sites in 35 - Plant Sciences - Ecology Franklin and Delaware Counties. Lunch is on your own 36 - Plant Sciences - Physiological Ecology following the field trip. 38 - Plant Sciences - Plant Systematics The Devonian ana Lower Mississippian stratigraphic se- 39 - Plant Sciences - Reproductive Botany quence exposed in central and east-central Ohio consists of the Columbus Limestone, the Delaware Limestone, the Olentangy 40 - Quaternary and Environmental Geology Shale, the Ohio Shale, the Bedford Shale, the Berea Sandstone, 42 - Social Influences on Cognitive Behavior: and the Sunbury Shale. On this field trip we will examine From Perception of Self to portions of the above units at three localities: Camp Lazarus, Selection of Habitat Galena, and Rocky Fork. The Camp Lazarus locality contains 43 - Waste Remediation exposures of the uppermost Columbus Limestone (low river level permitting), Delaware Limestone, Olentangy Shale, and 44 - Wastewater Management lower Ohio Shale. The Galena locality contains exposures of 45 - Poster Session 9:00 AM - Social - Ecology - the Ohio Shale-Bedford Shale contact and the lower Bedford Biomedical Shale. The Rocky Fork locality contains exposures of the "Red 47 - Poster Session 10:00 AM - Biomedical Bedford", upper Bedford Shale, Berea Sandstone, and Sunbury Shale. During the Late Devonian and Early Mississippian, 49 - Poster Session 1:30 PM - Jr. Academy Ohio was located at approximately 10-15 degrees south lati- 51 - Poster Session 3:30 PM - Education - Geology - tude, and was covered by the shallow epeiric seas of the Environmental Appalachian Basin. The composite section we will observe on 54 - Interdisciplinary Session this trip represents a major transgressive-regressive sequence deposited in the western part of the basin, and is capped by the subsequent transgressive deposit of the Sunbury Shale. To Please see Author Index on page 56 to locate register for the trip check the space on the registration form first authors of abstracts. and pay the field trip fee which includes a guidebook. Atten- dance is limited to the first 30 registered participants. For further information please contact SCOTT BROCKMAN, Ohio Division of Geological Survey, phone 614/265-7054. April Program Abstracts A-9. position. Successful spawning first occurred on May 12 at temperatures of ANIMAL SCIENCE - ECOLOGY 16°C. Spawning occurred at depths of approximately 95 cm and in currents of approximately 2.5 ft/sec. Similar to many red horse species, fighting between 1:30 PM SATURDAY, APRIL 29,1995 males was common. Spawning groups consisted of one female flanked by two males. Thirteen spawning acts lasted an average of 6.1 seconds. Males ROUSH HALL 114 remained in the riffle while females congregated in a staging area in the pool just upstream of the spawning riffle. The entrance of a female into the spawning JOHN R WING - PRESIDING area frequently generated frantic fighting amongst the nearby males. Further details will be presented and illustrated with visual aids. 1:30. FOOD HABITS OF TURKEY VULTURES IN WEST CENTRAL OHIO. NEIL B. SABINE, DEPARTMENT OF NATURAL SCIENCES AND MATHEMATICS, INDIANA UNIVERSITY 2:30. PALEOLIMNOLOGICAL ANALYSIS OF FISH PREDATION IN TOOLIK EAST, RICHMOND IN 47374. LAKE, ALASKA. REBECCA L. EVANS AND MICHAEL C. MILLER, UNIVERSITY OF CINCINNATI, DEPARTMENT OF BIOLOGICAL SCIENCES ML 006, CINCINNATI OH 45221-0006. Between 13 July and 20 November 1994 I made weekly collections of regurgitated pellets beneath a Turkey Vulture {Cathartes aura) roost near Fish predation on Chironomidae (Crustacea: Diptera) larvae in Alas- Braffettsville, Ohio. A sample of 490 pellets was randomly selected from 1421 kan Lakes results in distinct changes in chironomid tribe, subfamily and genus collected. Mammalian remains were most common (94%) and indicated the composition depending on the dominant predator within the lake. A 1.65 meter use of mostly small wild carrion. Ten species of mammals were identified with sediment core of Toolik Lake, Alaska was collected in July I993 and sampled Raccoon (Procyon lotor) and Opossum [Didelphis marsupialis) being the two every 5.0 cm. Chironomid head capsules were counted, mounted on slides and most common species (36% and 17%, respectively). Domestic sources, identified to genus. The number of individuals and taxonomic identifications including unknown bird remains (6%), were found in only 8% of the castings. were used to reconstruct the composition of recent chironomid communities in No difference in prey selection was noted between summer and fall. Toolik Lake. Geochemical and paleobotanical data from previous studies of Toolik Lake were compared to changes in chironomid community structure to 1:45. NEST SITE SELECTION OF A SMALL POPULATION OF THE determine what changes in chironomid communities correlate with variations PROTHONOTARY WARBLER IN THE CUYAHOGA RIVER, GEAUGA in productivity and chemistry. This information was then used to determine the COUNTY, OHIO. KELLY A. STANEK AND E. BRUCE MCLEAN, DEPT. OF BIOLOGY, JOHN onset and changes in intensity of fish predation over time based on changes in CARROLL UNIVERSITY, UNIVERSITY HEIGHTS OH 44118. chironomid communities that could not be explained by other factors. Data show that fish predation began around 7,000 years b.p. as is evidenced by The Prothonotary warbler (Protonotaria citrea) is usually associated changes in the proportion of large Chironomidae head capsules to small head with the wooded swamps of the Southeastern United States. With wooded capsules. swamp lands scarce in Ohio, small populations of nesting pairs exist in scattered locations throughout Ohio. The Cuyahoga River in Geauga County is 2:45. POPULATION STRUCTURE AND HYBRIDIZATION IN FISH: LAKE one such location. This section of the Cuyahoga River is characterized by two VICTORIA TILAPLA STUDIED WITH RANDOMLY AMPLIFIED distinct habitats. One has been channelized and provides shade from silver POLYMORPHIC DNA (RAPD) MARKERS. WILSON MWANJA2, MARK CHANDLER3, maples {Acer saccharinum), and one has remained undisturbed and lined with LES KAUFMAN4, AND PAUL A. FUERST1, DEPTS. OF MOLECULAR GENETICS1 AND ZOOLOGY2, button bush {Cephalanthus occicdentalis), which provides no shade. Nest THE OHIO STATE UNIVERSITY, COLUMBUS OH 43210, NEW ENGLAND AQUARIUM3, BOSTON boxes were constructed from polyethylene jars and placed in the river to MA 02110 AND DEPT. OF BIOLOGY4, BOSTON UNIVERSITY, BOSTON MA 02215. determine nest site selection in shaded and sunny sections of the river. A significantly larger number of nesting attempts was observed in shaded areas The cichlid fauna of the Lake Victoria basin in Africa has suffered compared to unshaded areas. significant species loss after the introduction of an exotic predator, the Nile Perch, Lates niloticus, and an ecologically labile exotic cichlid competitor, the 2:00. EFFECTS OF INTRASPECIFIC NEST PARASITISM ON Nile tilapia, Oreochromis niloticus. Among the species severely affected was ABANDONMENT BY WOOD DUCKS NESTING IN BOXES. COURTENAY N. the Ngege, O. esculentus, one of two endemic L. Victoria tilapias. Ngege were WILLIS, DAVID W. WALLER, & LOWELL P. ORR, DEPT.