Mazzariol definitions Flashcards
Dead stranded cetacean
an animal lacking vital signs, which means without brain, respiratory and circulatory
function.
Beached cetacean
this is another term sometimes used to define an animal found dead completely ashore.
Live stranded cetacean
this term refers to a cetacean found alive, ashore or free-swimming in shallow waters
Live-stranded animals are usually in need of medical attention and are unable to return to their natural habitat without assistance
Strandled cetacean
referring to an animal still in the water that is trapped, cannot cope or is outside of its
natural environment; these conditions suggest a perilous situation with a possible risk of stranding that may
demand preventive measures and highlight the quandary of whether and when to act..
Entangled cetacean
when found entangled in fishing gear and this
condition impairs their swimming and diving abilities thereby compromising their feeding activities. Animals could be completely or partially entangled by nets.
Unusual Mortality Event (UME)
unexpected mortality of cetaceans at an abnormally large scale compared to average stranding reports for the species involved in the event and the area and period considered
Disease outbreak
- specific UME involving infectious agents
- may occur in a restricted geographical area, or may extend over an entire basin involving several countries.
- It may last for a few days or weeks, or for several years.
Mass stranding
- these events involve two or more cetaceans (excluding cow/calf pairs) stranded at the same time and place
- Might be caused by: extreme weather conditions, tidal changes, disease of one or several group members, or human-related events.
- Some individuals involved in a mass stranding may be completely healthy.
Atypical mass stranding
mass stranding related to sonar exposure in which animals do not strand all together as a single cluster but over a very short and defined time lap and within a confined space, both in association to the SONAR event.
What are the 3 release categories?
- Releasable
- Conditionally releasable
- Non-releasable
Releasable (release category)
- no significant concerns related to likelihood of survival in the wild and/or risk of introducing disease into the wild population.
- Animal meets basic historical, developmental, behavioral, ecological, and medical release criteria.
Conditionally releasable (release category)
- concerns about the historical, developmental,
behavioral, ecological, and/or medical status of the animal raising a question of survival or
health risk to wild marine mammals. - requirements for release cannot be currently met but may be met within 15 days without
compromising the health and welfare of the individual animal. In such cases, more time may be needed to determine the feasibility of release (maximum 1 month)
Non-releasable (release category)
- Significant historical, developmental, behavioral, ecological, and/or medical concerns regarding its release to the wild.
- Condition demonstrates little chance for survival in the wild and/or a diagnosed health risk to wild marine mammals.
- Also includes animals that have been in rehabilitation greater than 1 month.
Cause of death
- disease, injury or abnormality that alone or in combination with other factors
(environmental, other concurrent diseases, age, etc.) is responsible for initiating the sequence of functional
disturbances that resulted in live stranding and death.
During this procedure the following may be further defined:
a) Immediate cause of death: final disease or condition resulting in death;
b)Underlying cause of death: the disease or injury that initiated the chain of morbid events that led directly and inevitably to death;
c) Contributing factors: other significant diseases, conditions, or injuries/impacts/influences that may have
contributed to death but which did not constitute an underlying cause of death.
Mechanism of death
The immediate physiologic derangement resulting in death. A particular mechanism
of death can be produced by a variety of different causes of death
Manner of death
How death came about; in the case of wildlife and, specifically, in cetaceans, we can
distinguish:
a) Natural, due mainly to natural disease or toxic processes;
b)Anthropic/anthropogenic, accidental like ship strikes, bycatch, or non-accidental due to a volitional act or direct killing;
c) Undetermined, inadequate information regarding the circumstances of death in order to determine the manner.
Emaciation (NCC)
A serious, usually chronic and progressive condition characterized by
significant (>20%) body weight loss.
Cachexia (NCC)
The termed used to describe the end stage of emaciation.