By Thomas A. Jefferson, Barbara E. Curry
Humpback Dolphins (Sousa spp.): present prestige and Conservation, half 1 is a part of Advances in Marine Biology, a sequence that has been delivering in-depth and up to date experiences on all facets of marine biology on account that 1963 - greater than 50 years of exceptional insurance from a reference that's popular for its contents and enhancing.
This most recent addition to the sequence contains updates on many subject matters that would attract postgraduates and researchers in marine biology, fisheries technology, ecology, zoology, and organic oceanography.
Specialty components for the sequence comprise marine technological know-how, either utilized and uncomplicated, quite a lot of topical components from all corners of marine ecology, oceanography, fisheries administration, and molecular biology, and the entire variety of geographic parts from polar seas to tropical coral reefs.
- Reviews articles at the most up-to-date advances in marine biology
- Includes updates on many subject matters that may entice postgraduates and researchers in marine biology, fisheries technology, ecology, zoology, and organic oceanography
- Authored through best figures of their respective fields of analysis
- Presents fabrics which are usual by way of managers, scholars, and educational pros within the marine sciences
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Extra resources for Humpback Dolphins (Sousa spp.): Current Status and Conservation, Part 1
Example text
2010), and may result in time and energy spent engaging in one biologically significant activity at the expense of another (Dugatkin, 2009; Frid and Dill, 2002). , 2006). , 1997). g. all-terrain vehicles and boats) (Rodgers and Smith, 1997). In behavioural studies, it is important to recognize that animals may respond to stimuli even when no short-term behavioural responses are observed. The stress response to an external stimulus begins with the perception of risk (Moberg, 2000). The acute response to an external stressor occurs via the autonomic nervous system, associated with the flight or fight 20 Sarah Piwetz et al.
Increased heart rate). Additionally, dolphins spend the majority of time underwater, making detection of small behaviour changes challenging when observing from above-water only. 28 Sarah Piwetz et al. , 2004). , 2002). Off the west coast of Lantau Island, Hong Kong, an important foraging area for S. chinensis where female-calf pairs are abundant, independent dolphin-watching tourism vessels operate on a daily basis (Hung, 2014). , 2015), including boat approaches by juvenile dolphins (Ng and Leung, 2003).
These physiological and neurochemical responses are not easily detectable, particularly in behavioural studies of animals in natural settings (Stankowich, 2008). Furthermore, animals that respond most noticeably to external stimuli may actually be less affected than individuals that display little to no behavioural changes (Beale and Monaghan, 2004). Weaker individuals may lack the capacity to respond in the same way or at the same intensity as healthy animals. Also, if displaced by a particular disturbance, there may be a greater proximate cost to leaving a prey-rich habitat for animals in poor condition.
