biosystems: Sharks and Remora Fish
In a commensal relationship, one organism benefits while the other is unaffected. By attaching itself to a leopard shark, a remora is carried along on the shark's. At S.E.A. Aquarium we can observe a clear mutualistic relationship between our ' Sharksucker' Remoras (Echeneis naucrates) and our Reef. As you can imagine, just like other sharks, the blacktip reef shark is known as a The relationship is seen as commensalism because the remora Interactions.
Characteristics[ edit ] Remora front dorsal fins have evolved to enable them to adhere by suction to smooth surfaces and they spend their lives clinging to a host animal such as a whaleturtleshark or ray.
It is probably a mutualistic arrangement as the remora can move around on the host, removing ectoparasites and loose flakes of skin, while benefiting from the protection provided by the host, and the constant flow of water across its gills.
Remoras are tropical open-ocean dwellers, but are occasionally found in temperate or coastal waters if they have attached to large fish that have wandered into these areas.Shark Symbiotic part 2
In the mid- Atlanticspawning usually takes place in June and July; in the Mediterraneanit occurs in August and September. The remora's lower jaw projects beyond the upper, and the animal lacks a swim bladder. They are commonly found attached to sharks, manta rayswhales, turtles, and dugongs hence the common names "sharksucker" and "whalesucker".
The Shark and The Remora Fish – A Unique Relationship!
Smaller remoras also fasten onto fish such as tuna and swordfishand some small remoras travel in the mouths or gills of large manta rays, ocean sunfishswordfish and sailfish. The relationship between a remora and its host is most often taken to be one of commensalismspecifically phoresy. Physiology[ edit ] Research into the physiology of the remora has been of significant benefit to the understanding of ventilation costs in fish. Remoras, like many other fishes, have two different modes of ventilation.
Ram ventilation  is the process in which at higher speeds, the remora uses the force of the water moving past it to create movement of fluid in the gills.
The Remoras attach themselves to the mantas using oval, sucker-like organs that open and close to create suction. When the mantas feed, the Remoras will travel up to the mouths of their hosts and help themselves to leftover scraps of food.
The Shark and the Remora (A Bedtime Story) – Elaine's Idle Mind
The Remora can be seen swimming below the Manta Ray waiting for left over krill. The Remoras are not free loaders.
Since both the Manta Rays and the Remoras benefit from their exchange of services, their relationship is mutual. Copepods, which the Remoras remove, have a parasitic relationship with the Manta Rays. They are typically small and inconspicuous aquatic crustaceans.
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Most of them are probably parasitic but the precise nature of the relationship with the host has yet to be confirmed. The Cobias Rachicentron canadum also have a relationship with the Manta Rays. Instead, the Cobias follow the Mantas around, scavenging for leftovers, and gaining some measure of protection.
Cobias and Remoras have been seen to form relationships with a range of large marine animals from sharks and whales to turtles and dugongs.