A new metric for measuring condition in large predatory sharks.
Saved in:
| Title: | A new metric for measuring condition in large predatory sharks. |
|---|---|
| Authors: | Irschick, D. J.1,2, Hammerschlag, N.3,4 |
| Source: | Journal of Fish Biology. Sep2014, Vol. 85 Issue 3, p917-926. 10p. |
| Subjects: | Nurse shark, Animal species, Predatory aquatic animals, Animal behavior, Habitats, Marine animals |
| Abstract: | A simple metric (span condition analysis; SCA) is presented for quantifying the condition of sharks based on four measurements of body girth relative to body length. Data on 104 live sharks from four species that vary in body form, behaviour and habitat use ( Carcharhinus leucas, Carcharhinus limbatus, Ginglymostoma cirratum and Galeocerdo cuvier) are given. Condition shows similar levels of variability among individuals within each species. Carcharhinus leucas showed a positive relationship between condition and body size, whereas the other three species showed no relationship. There was little evidence for strong differences in condition between males and females, although more male sharks are needed for some species ( e.g. G. cuvier) to verify this finding. SCA is potentially viable for other large marine or terrestrial animals that are captured live and then released. [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Fish Biology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
Be the first to leave a comment!
