Abundance and survival rates of the Hawai’i Island associated spinner dolphin (Stenella longirostris) stock.
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Reliable population estimates are critical to implement effective management strategies. The Hawai’i Island spinner dolphin (Stenella longirostris) is a genetically distinct stock that displays a rigid daily behavioural pattern, foraging offshore at night and resting in sheltered bays during the day. Consequently, they are exposed to frequent human interactions and disturbance. We estimated population parameters of this spinner dolphin stock using a systematic sampling design and capture–recapture models. From September 2010 to August 2011, boat-based photo-identification surveys were undertaken monthly over 132 days (.1,150 hours of effort; .100,000 dorsal fin images) in the four main resting bays along the Kona Coast, Hawai’i Island. All images were graded according to photographic quality and distinctiveness. Over 32,000 images were included in the analyses, from which 607 distinctive individuals were catalogued and 214 were highly distinctive. Two independent estimates of t.....
Essential Ocean Variables (EOV)Marine turtles, birds, mammals abundance and distribution
CitationTyne, J.A., Pollock, K.H., Johnston, D.W. and Bejder, L. (2014) Abundance and survival rates of the Hawai’i Island associated spinner dolphin (Stenella longirostris) stock. PLoS ONE 9(1): e86132, 10pp. DOI: https://doi.org/10.1371/journal.pone.0086132
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