Audiogram and auditory critical ratios of two Florida manatees (Trichechus manatus latirostris)

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منابع مشابه

Audiogram and auditory critical ratios of two Florida manatees (Trichechus manatus latirostris).

Manatees inhabit turbid, shallow-water environments and have been shown to have poor visual acuity. Previous studies on hearing have demonstrated that manatees possess good hearing and sound localization abilities. The goals of this research were to determine the hearing abilities of two captive subjects and measure critical ratios to understand the capacity of manatees to detect tonal signals,...

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Pathologic Findings in Florida Manatees (Trichechus manatus latirostris)

This report describes pathologic findings associated with mortality in Florida manatees (Trichechus manatus latirostris) (n = 68) between January 1996 and January 2004. The most frequent causes of death among these Florida manatees were trauma (47%), cold stress syndrome (CSS) (18%), inflammatory/infectious disease (12%), and suspected brevetoxicosis (9%). There were few perinatal deaths (7%). ...

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Evaluation of adrenocortical function in Florida manatees (Trichechus manatus latirostris).

The study objectives were to determine the predominant manatee glucocorticoid; validate assays to measure this glucocorticoid and adrenocorticotropic hormone (ACTH); determine diagnostic thresholds to distinguish physiological vs. pathological concentrations; identify differences associated with sex, age class, female reproductive status, capture time, and lactate; and determine the best method...

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Opportunistic carnivory by Florida manatees (Trichechus manatus latirostris)

The Florida manatee (Trichechus manatus latirostris) is one of the most endangered marine mammals in the US To protect this species, it is important to understand the feeding ecology to define critical habitats. Manatees generally are considered to be strictly herbivious mammals that only incidentally consume animal species. This concept is based on the preponderence of freshwater vegetation, s...

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Four-choice sound localization abilities of two Florida manatees, Trichechus manatus latirostris.

The absolute sound localization abilities of two Florida manatees (Trichechus manatus latirostris) were measured using a four-choice discrimination paradigm, with test locations positioned at 45 deg., 90 deg., 270 deg. and 315 deg. angles relative to subjects facing 0 deg. Three broadband signals were tested at four durations (200, 500, 1000, 3000 ms), including a stimulus that spanned a wide r...

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ژورنال

عنوان ژورنال: Journal of Experimental Biology

سال: 2012

ISSN: 1477-9145,0022-0949

DOI: 10.1242/jeb.065649