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Monitoring the effects of tourism on whale shark Rhincodon typus behaviour in Mozambique

机译：监测旅游业对莫桑比克鲸鲨Rhincodon typus行为的影响

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摘要

The whale shark Rhincodon typus is a popular focal species in the marine tourism industry. We analysed 689 encounters with at least 142 individual sharks during 2008-2010 to assess their behaviour in the presence of swimmers at Tofo Beach, Mozambique. Sharks varied in size (estimated 3.0-9.5 m total length) and the majority (74%) were males. The sharks displayed avoidance behaviours during 64.7% of encounters. Encounter duration decreased significantly, from 12 minutes 37 s with undisturbed sharks to 8 minutes 25 s when sharks expressed avoidance behaviours, indicating that interactions with tourists affected the sharks' short-term behaviour. However, during the 2.5-year study period we found no trend in the mean encounter duration, the overall expression of avoidance behaviour or the likelihood of an individual shark exhibiting avoidance behaviours. Potential effects of tourism may be mitigated by the non-breeding status and transient behaviour of sharks at this aggregation site.
机译：鲸鲨Rhincodon typus是海洋旅游业中流行的重点物种。我们分析了2008-2010年间至少142条鲨鱼的689次接触，以评估在莫桑比克Tofo海滩游泳者在场的情况下的行为。鲨鱼的大小各异（估计总长度为3.0-9.5 m），并且大多数（74％）是雄性。鲨鱼在64.7％的遭遇中表现出回避行为。鲨鱼遇到躲避行为的持续时间显着减少，从12分钟37 s减少到8分钟25 s，这表明鲨鱼表现出回避行为，这表明与游客的互动影响了鲨鱼的短期行为。但是，在2.5年的研究期内，我们发现平均遭遇时间，回避行为的整体表达或单个鲨鱼表现出回避行为的可能性均无趋势。鲨鱼在此聚集地的非繁殖状态和短暂行为可能会减轻旅游业的潜在影响。

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