(Reuters) - TripAdvisor Inc's
The company, whose profit also fell more than expected, said on Wednesday that referral revenue fell to $189 million in the first quarter ended March 31 from $218 million a year earlier.
TripAdvisor's shares were down 5.8 percent at $59.46 in after-hours trading.
The company, whose websites include Tripadvisor.com and Oyster.com, said total costs and expenses rose 13.6 percent to $310 million in the quarter. (http://bit.ly/1SZdIhM)
TripAdvisor-branded display-based advertising and subscription revenue, which includes display ad and subscription-based revenue, rose 11 percent in the period.
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The company's net income fell 57 percent to $27 million, or 18 cents per share, in the first quarter from $63 million, or 43 cents per share, a year earlier.
Excluding items, TripAdvisor earned 32 cents per share, far short of the average analysts' estimate of 46 cents, according to Thomson Reuters I/B/E/S.
Revenue fell to $352 million from $363 million, missing the average estimate of $370.5 million.
The company's results follow those of larger travel website operator Expedia Inc
(Reporting by Shashwat Awasthi in Bengaluru; Editing by Kirti Pandey)