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effects of a garbage-supplemented diet on the reproductive success of the White Ibis, Eudocimus albus (L.)
Title
The effects of a garbage-supplemented diet on the reproductive success of the White Ibis, Eudocimus albus (L.).
Creator
Rumbold, Darren George., Florida Atlantic University, Adams, Ralph M.
Abstract/Description
The reproductive success of White Ibises, Eudocimus albus (L.) was studied during the 1988 and 1989 nesting seasons at a wading bird colony in Florida. Evidence suggests that the diets of both adult and nestling Ibises included garbage from a nearby dump. The mean clutch size was 2.5 +- 0.72 in 1988 and 2.6 +- 0.72 in 1989. The probability of a nest surviving to produce at least one 10-day-old nestling was 45.8% and 54.1% for 1988 and 1989, respectively. Success was higher for nests on...
Show moreThe reproductive success of White Ibises, Eudocimus albus (L.) was studied during the 1988 and 1989 nesting seasons at a wading bird colony in Florida. Evidence suggests that the diets of both adult and nestling Ibises included garbage from a nearby dump. The mean clutch size was 2.5 +- 0.72 in 1988 and 2.6 +- 0.72 in 1989. The probability of a nest surviving to produce at least one 10-day-old nestling was 45.8% and 54.1% for 1988 and 1989, respectively. Success was higher for nests on islands at the periphery of the colony than on islands more centrally located. This resulted from reduced interactions between nesting Ibises and Cattle Egrets (Bubulcus ibis) and, reduced egg predation by grackles (Quiscalus spp.) at the periphery of the colony. Both clutch size and reproductive success were within the ranges previously reported for Ibises at other colonies that did not supplement their diets with garbage.
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Date Issued
1990
PURL
http://purl.flvc.org/fcla/dt/14598
Subject Headings
Ibises--Food, Garbage as feed, Birds--Florida
Format
Document (PDF)
Time-activity budgets and displacement rates in Florida manatees (Trichechus manatus) in the absence and presence of humans
Title
Time-activity budgets and displacement rates in Florida manatees (Trichechus manatus) in the absence and presence of humans.
Creator
Abernathy, Jim., Florida Atlantic University, Adams, Ralph M.
Abstract/Description
The effects of human presence on displacement behavior and time-activity budgets of free-ranging manatees (Trichechus manatus) are poorly known. The congregation of manatees and human tourists in the warm waters of Crystal River, Florida, during the winter months offered a unique opportunity to study these effects. Focal animal sampling was used to gather behavioral data on manatees during randomly selected daylight sampling periods. Frequencies of displacement were correlated with numbers of...
Show moreThe effects of human presence on displacement behavior and time-activity budgets of free-ranging manatees (Trichechus manatus) are poorly known. The congregation of manatees and human tourists in the warm waters of Crystal River, Florida, during the winter months offered a unique opportunity to study these effects. Focal animal sampling was used to gather behavioral data on manatees during randomly selected daylight sampling periods. Frequencies of displacement were correlated with numbers of humans to determine if incidences of displacement were increased. Displacement increased with human presence. Maintenance and sexual behaviors decreased as human presence increased.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15176
Subject Headings
Manatees--Florida, West Indian manatee--Florida, Human-animal relationships
Format
Document (PDF)
Growth of Tilapia mariae (Boulenger) fry in different salinities
Title
Growth of Tilapia mariae (Boulenger) fry in different salinities.
Creator
Garcia, Eileen Leonor, Florida Atlantic University, Adams, Ralph M., Courtenay, Walter R. Jr.
Abstract/Description
Gradual salinity acclimatization and growth studies were performed on fry of the spotted tilapia, Tilapia mariae. First, fry were successfully brought to a salinity of 40%. in 8 weeks by gradual weekly increments of 5 %.. Second, fry were exposed separately for nine weeks to salinities of 0, 5, 10, 20, 25, and 30 %.. Fish grew best at 5 and 10 %. (p
Show moreGradual salinity acclimatization and growth studies were performed on fry of the spotted tilapia, Tilapia mariae. First, fry were successfully brought to a salinity of 40%. in 8 weeks by gradual weekly increments of 5 %.. Second, fry were exposed separately for nine weeks to salinities of 0, 5, 10, 20, 25, and 30 %.. Fish grew best at 5 and 10 %. (p < 0.05) and least at 30 %.. At nine weeks, fish at 0, 5, 10, 20, 25, and 30%. appeared to be osmoregulating, as indicated by osmolarities of their inner body fluids. These results suggest that Tilapia mariae may become a competitive threat to fishes in native estuarine environments in southern Florida.
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Date Issued
1990
PURL
http://purl.flvc.org/fcla/dt/14640
Subject Headings
Tilapia--Effect of salt on
Format
Document (PDF)
Health evaluation of African penguins (Spheniscus demersus) in southern Africa
Title
Health evaluation of African penguins (Spheniscus demersus) in southern Africa.
Creator
Parsons, Nola J., Gous, Tertius A., Schaefer, Adam M., Vanstreels, Ralph E.T., Harbor Branch Oceanographic Institute
Abstract/Description
The African penguin (Spheniscus demersus) is an endangered seabird that breeds along the coast of Namibia and South Africa, and disease surveillance was identified as a priority for its conservation. Aiming for the establishment of baseline data on the presence of potential pathogens in this species, a comprehensive health assessment (blood smear examination, haematology, biochemistry and serology) was conducted on samples obtained from 578 African penguins at 11 breeding colonies and a...
Show moreThe African penguin (Spheniscus demersus) is an endangered seabird that breeds along the coast of Namibia and South Africa, and disease surveillance was identified as a priority for its conservation. Aiming for the establishment of baseline data on the presence of potential pathogens in this species, a comprehensive health assessment (blood smear examination, haematology, biochemistry and serology) was conducted on samples obtained from 578 African penguins at 11 breeding colonies and a rehabilitation centre. There were 68 penguins that were seropositive for at least one of seven pathogens tested: avian encephalomyelitis virus, avian infectious bronchitis virus, avian reovirus, infectious bursal disease virus, Newcastle disease virus, Mycoplasma gallisepticum and Mycoplasma synoviae. All samples were seronegative for avian influenza virus subtypes H5 and H7 and infectious laryngotracheitis virus. The apparent prevalence of Babesia sp. and Borrelia sp. in blood smears was consistent with previous studies. Babesia-infected individuals had a regenerative response of the erythrocytic lineage, an active inflammatory response and hepatic function impairment. These findings indicate that African penguins may be exposed to conservation-significant pathogens in the wild and encourage further studies aiming for the direct detection and/or isolation of these microorganisms.
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Date Issued
2016-03-09
PURL
http://purl.flvc.org/fau/fd/FAUIR000049
Format
Citation
EXPERIMENT IN TEACHING TECHNIQUE: TRADITIONAL INSTRUCTION COMPARED TO STUDENT INVOLVEMENT IN THE LEARNING PROCESS (SECONDARY SCIENCE)
Title
AN EXPERIMENT IN TEACHING TECHNIQUE: TRADITIONAL INSTRUCTION COMPARED TO STUDENT INVOLVEMENT IN THE LEARNING PROCESS (SECONDARY SCIENCE).
Creator
JANES, SHELLEY KING, Florida Atlantic University, Adams, Ralph M., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
The history of the public high school is discussed including characterization of the slow learner, the culturally disadvantaged and the problem student. Two identical groups of students participated in the experiment; one group actively and physically involved in the educational process; the other less actively and physically involved. The raw score data were statistically analyzed. The mean, median and ninety-five percent confidence interval were similar for both groups. Thus, attempts to...
Show moreThe history of the public high school is discussed including characterization of the slow learner, the culturally disadvantaged and the problem student. Two identical groups of students participated in the experiment; one group actively and physically involved in the educational process; the other less actively and physically involved. The raw score data were statistically analyzed. The mean, median and ninety-five percent confidence interval were similar for both groups. Thus, attempts to physically involve these students will not increase their achievement. The current methods of teaching, curricula and building designs are discussed.
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Date Issued
1976
PURL
http://purl.flvc.org/fcla/dt/13784
Subject Headings
Botany--Study and teaching (Secondary), Slow learning children, Children with social disabilities--Education (Secondary)
Format
Document (PDF)
Human presence and sexual activity of West Indian manatees (Trichechus manatus) at Crystal River, Florida
Title
Human presence and sexual activity of West Indian manatees (Trichechus manatus) at Crystal River, Florida.
Creator
Abernathy, Barbara E., Florida Atlantic University, Adams, Ralph M., Charles E. Schmidt College of Science, Department of Biological Sciences
Abstract/Description
Free-ranging manatees wintering in the warm water of Kings Spring, Crystal River, Florida, were studied to determine the relationships between human presence and their sexual behaviors. The manatees of Crystal River are unique because of frequent exposure to large numbers of snorkelers and divers. Quantitative knowledge of such relationships are becoming increasingly important as preservation measures are reviewed to ensure that the human activity at the Spring does not pose a threat to...
Show moreFree-ranging manatees wintering in the warm water of Kings Spring, Crystal River, Florida, were studied to determine the relationships between human presence and their sexual behaviors. The manatees of Crystal River are unique because of frequent exposure to large numbers of snorkelers and divers. Quantitative knowledge of such relationships are becoming increasingly important as preservation measures are reviewed to ensure that the human activity at the Spring does not pose a threat to manatee reproduction. Focal animal sampling provided sexual behavioral data of manatees during randomly selected 30 min sampling periods. Frequencies of four of the eight observed sexual behaviors increased significantly in the presence of humans. Differences were also found between the types of sexual behaviors manatees exhibited while interacting with conspecifics, and the behaviors displayed with humans. Manatees appeared to be hyperstimulated in the presence of humans. No conclusions could be made about the effects of human interaction on manatee reproductive success because of the relatively short duration of the study.
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Date Issued
1995
PURL
http://purl.flvc.org/fcla/dt/15159
Subject Headings
West Indian manatee--Sexual behavior--Florida, Manatees--Sexual behavior--Florida
Format
Document (PDF)