Dataset Identification:
Resource Abstract:
- description: The recovery plan for Sika Deer discusses the current status of the species, habitat requirements and limiting
factors, recovery objectives and criteria, actions required for species recovery, the cost of recovery, and the expected date
for recovery objectives to be met. A six year population study on sika deer, Cervus nippon, introduced in 1916 on James Island
in Chesapeake Bay, Maryland, provided unique results because of the unusual completeness of the data due to an islandic situation.
A density of one deer per acre was reached in 1955. In 1958, 60 percent of the population, mainly young and females, died
during January and February. Gross and microscopic studies were made on 18 deer, shot and autopsied in 1955, 1957-60, plus
one recently dead at the time of the die-off. Adrenal weight increased, especially in the young, from 1955 to 1958 and then
dropped 50 percent following the die-off. Inhibition of growth observed before and during the die off vanished afterwards.
Changes in the adrenal zona glomerulosa and medulla suggested overstimulation and a severe imbalance of fluid-electrolyte
metabolism as the cause of the die-off. These changes may have been secondary to prolonged hyper-stimulation of the cortex
as a result of excessive population density and its resultant social pressures. An inclusion hepatitis and glomerulonephritis
are described which involved all deer, especially alter 1958, but not in 1955. These diseases were ruled out as causal factors
in the die-off, as were malnutrition and poisoning. The deer were apparently in good nutritive status throughout. It was concluded
that physiological derangements resulting from high population density produced the observed effects.; abstract: The recovery
plan for Sika Deer discusses the current status of the species, habitat requirements and limiting factors, recovery objectives
and criteria, actions required for species recovery, the cost of recovery, and the expected date for recovery objectives to
be met. A six year population study on sika deer, Cervus nippon, introduced in 1916 on James Island in Chesapeake Bay, Maryland,
provided unique results because of the unusual completeness of the data due to an islandic situation. A density of one deer
per acre was reached in 1955. In 1958, 60 percent of the population, mainly young and females, died during January and February.
Gross and microscopic studies were made on 18 deer, shot and autopsied in 1955, 1957-60, plus one recently dead at the time
of the die-off. Adrenal weight increased, especially in the young, from 1955 to 1958 and then dropped 50 percent following
the die-off. Inhibition of growth observed before and during the die off vanished afterwards. Changes in the adrenal zona
glomerulosa and medulla suggested overstimulation and a severe imbalance of fluid-electrolyte metabolism as the cause of the
die-off. These changes may have been secondary to prolonged hyper-stimulation of the cortex as a result of excessive population
density and its resultant social pressures. An inclusion hepatitis and glomerulonephritis are described which involved all
deer, especially alter 1958, but not in 1955. These diseases were ruled out as causal factors in the die-off, as were malnutrition
and poisoning. The deer were apparently in good nutritive status throughout. It was concluded that physiological derangements
resulting from high population density produced the observed effects.
Citation
- Title Factors in the Mass Mortality of a Herd of Sika Deer Cervus Nippon.
-
- creation Date
2018-05-20T19:28:45.693868
Resource language:
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Metadata data stamp:
2018-08-06T20:53:18Z
Resource Maintenance Information
- maintenance or update frequency:
- notes: This metadata record was generated by an xslt transformation from a dc metadata record; Transform by Stephen M. Richard, based
on a transform by Damian Ulbricht. Run on 2018-08-06T20:53:18Z
Metadata contact
-
pointOfContact
- organisation Name
CINERGI Metadata catalog
-
- Contact information
-
-
- Address
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- electronic Mail Address cinergi@sdsc.edu
Metadata language
eng
Metadata character set encoding:
utf8
Metadata standard for this record:
ISO 19139 Geographic Information - Metadata - Implementation Specification
standard version:
2007
Metadata record identifier:
urn:dciso:metadataabout:f0a98b27-0f27-45ad-8ff4-7a15ce0122c7
Metadata record format is ISO19139 XML (MD_Metadata)