Site affinity of whitespotted eagle rays Aetobatus narinari assessed using photographic identification

K. I. Flowers, A. C. Henderson, J. L. Lupton, D. D. Chapman

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Photographic identification was used to track the movements of the whitespotted eagle ray Aetobatus narinari around South Caicos, Turks and Caicos Islands. A total of 165 individuals were identified, aided by the computer program I3S Spot. The sex ratio across all study sites in 2015 was not significantly different from 1:1 (χ2 = 2·8, P > 0·05). 33·9% of all individual rays were resighted at least once and the maximum number of days between the first and last sighting was 1640 (median 165, interquartile range, IQR = 698). Sightings of individuals occurred at locations differing from the original sighting location 24·6% of the time (0·7–20 km away). The entire population around South Caicos has yet to be sampled and these rays exhibited site affinity during the study period; they are either resident to South Caicos or are using the area for parts of the year before making movements elsewhere and then returning. Given these results, A. narinari is suited to local-scale management and conservation efforts.

Original languageEnglish
Pages (from-to)1337-1349
Number of pages13
JournalJournal of Fish Biology
Volume91
Issue number5
DOIs
Publication statusPublished - Nov 2017
Externally publishedYes

Keywords

  • IS Spot
  • South Caicos
  • Turks and Caicos Islands
  • batoid
  • management
  • philopatry

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science

Fingerprint

Dive into the research topics of 'Site affinity of whitespotted eagle rays Aetobatus narinari assessed using photographic identification'. Together they form a unique fingerprint.

Cite this