Detecting a decline in whale shark Rhincodon typus sightings in the Andaman Sea, Thailand, using ecotourist operator-collected data
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چکیده
منابع مشابه
Population structure of a whale shark Rhincodon typus aggregation in the Red Sea.
The presence of whale sharks Rhincodon typus were recorded around Shib Habil, a small, coastal reef off the Red Sea coast of Saudi Arabia, from 2010 to 2015. A total of 267 suitable photographs resulting in the identification of 136 individuals, were documented from 305 encounters. Sharks were divided evenly between the sexes with no evidence of temporal or spatial segregation. All individuals ...
متن کاملFirst record of a whale shark Rhincodon typus in continental Europe.
A whale shark Rhincodon typus was found in a set-net in southern Portugal in October 2011. This was the first record for continental Europe and represents an increase of the species' known range. Upwelling events and increase in sea-surface temperatures are possible reasons for this occurrence.
متن کاملWhale Shark (Rhincodon typus) Seasonal Occurrence, Abundance and Demographic Structure in the Mid-Equatorial Atlantic Ocean
Whale sharks are generally associated with environmental factors that drive their movements to specific locations where food availability is high. Consequently, foraging is believed to be the main reason for the formation of whale shark aggregations. Feeding aggregations occur mainly in nearshore areas and are composed primarily of immature individuals. Conversely, aggregations of mature adults...
متن کاملBlood cells and serum chemistry in the world’s largest fish: the whale shark Rhincodon typus
Descriptive information regarding the peripheral blood of normal whale sharks Rhincodon typus Smith 1828 is presented based on samples collected from 2 healthy female specimens held in an aquarium collection. Erythrocyte morphology was similar to other orectolobiforms and major leukocyte types were similar to other non-carcharhinid sharks. The numerically dominant population was the lymphocyte ...
متن کاملiDNA at Sea: Recovery of Whale Shark (Rhincodon typus) Mitochondrial DNA Sequences from the Whale Shark Copepod (Pandarus rhincodonicus) Confirms Global Population Structure
Citation: Meekan M, Austin CM, Tan MH, Wei N-WV, Miller A, Pierce SJ, Rowat D, Stevens G, Davies TK, Ponzo A and Gan HM (2017) iDNA at Sea: Recovery of Whale Shark (Rhincodon typus) Mitochondrial DNA Sequences from the Whale Shark Copepod (Pandarus rhincodonicus) Confirms Global Population Structure. Front. Mar. Sci. 4:420. doi: 10.3389/fmars.2017.00420 iDNA at Sea: Recovery of Whale Shark (Rhi...
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ژورنال
عنوان ژورنال: Oryx
سال: 2006
ISSN: 0030-6053,1365-3008
DOI: 10.1017/s0030605306000998