Supplementary material 2 (Video). Changes in sailfish breathing from gill pump ventilation to ram ventilation.(122.0MB, 00:00:32)Shot Date: 2022/10/17 Shot Location: Fukushima Marine Science Museum | ||
 | species Istiophorus platypterus Key Words | |
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Supplementary material 2 (Video). Changes in sailfish breathing from gill pump ventilation to ram ventilation.(122.0MB, 00:00:32)Shot Date: 2022/10/17 Shot Location: Fukushima Marine Science Museum | ||
| species Istiophorus platypterus Key Words | |
|
Animalia >Chordata >Actinopterygii >Istiophoriformes >Istiophoridae >Istiophorus >
Two marlin suckers emerge from the sailfish’s gill cavity and swim along its body surface. When the sailfish widely opens its gill covers, one marlin sucker returns to the gill cavity (at 6 seconds). Upon the marlin sucker’s return, the sailfish begins using gill pump ventilation, broadly opening and closing its gill covers (6–16 seconds). The sailfish then moves its caudal fin while continuing gill pump ventilation to increase its swimming speed (16–21 seconds). After gaining speed, it switches to ram ventilation, breathing without moving its gill covers (21–31 seconds).
Below is the abstract from the article containing this video:
The symbiotic relationship between remoras and their hosts is difficult to comprehensively evaluate, as hosts may experience both benefits and disadvantages from their interaction with remoras. This study observed behaviors of sailfish (Istiophorus platypterus) and marlin suckers (Remora osteochir) in an aquarium by filming them. The marlin suckers displayed cleaning behavior, inserting their heads into small depressions along the base of the sailfish's fins and pecking at the host's injured snout. In response, the sailfish reduced its swimming speed and opened its operculum, allowing the marlin sucker to exit the gill cavity. These behaviors were consistent with the typical "cleaning–request" behavior observed in host species interacting with cleaner fish. Our observations strongly suggest a symbiotic relationship between the two species. Digital video images related to the article are available at http://www.momo-p.com/showdetail-e.php?movieid=momo250502ip07a, http://www. momo-p.com/showdetail-e.php?movieid=momo250502ip09a, and http://www.momo-p.com/showdetail-e.php?movieid= momo250502ip05a.
Toshiaki Mori, Kenichi Fujii, Kaori Fujii, Akira Komoda, and Takuzo Abe (2025) Symbiotic cleaning relationship between a sailfish (Istiophorus platypterus) and remoras (Remora osteochir). J. Ethol. 10.1007/s10164-025-00852-w
(Data No.momo250502ip05a)
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