Swim bladder consists of two gas pockets located on the dorsal, although in some primitive fish only swim bladder. Have flexible walls that contract and expand based on the ambient pressure. Swim bladder wall has a little blood vessels and lined with guanine crystals that make it airtight. Adjustment of gas pressure using gas gland so get neutral buoyancy and can go up and down at various depths. At the embryonic stage has lost some fish swim bladder like cartilaginous fish such as sharks and rays. The control fish into the swim (using dynamic lift).)
The combination of gas in the swim bladder varies. In the shallow water fish, the estimated ratio associated with atmospheric pressure, while the deep-sea fish tend to have a higher percentage of oxygen. For example, eel Synaphobranchus had 75.1% oxygen, 20.5% nitrogen, 3.1% carbon dioxide, and 0.4% argon.
In some fish, mainly freshwater species (eg, carp and catfish), swim bladder connected to the labyrinth of the inner ear by the Weberian, derived from the bony structure of the spine, which gives precise information about water pressure and depth, and improve hearing.
In some fish, mainly freshwater species (eg, carp and catfish), swim bladder connected to the labyrinth of the inner ear by the Weberian, derived from the bony structure of the spine, which gives precise information about water pressure and depth, and improve hearing.
Swim bladder is an internal organ that is filled by gas that serves to give the fish's ability to control buoyancy so as to save energy to swim. Another function of swim bladder is used as a resonating chamber to produce or receive sound. In addition to the swim bladder also serves as a respiratory organ specific to the type physostome.
Physostome form has an open swim bladder and is associated with the digestive tract. While physoclists form is closed due to swim bladder is not related to the gastrointestinal tract. Swim bladder located between the peritoneum and vertebrates. There is a bubble around the peritoneal epithelium and containing a thin layer of white crystal or silver. This bubble is strongly attached padavertebrata and contains blood vessels so it can function as a respiratory organ.
Swim bladder filling with air is done by way of the air flow until there are big pneumaticus tract. While emptying is done by pressing the bubbles into the intestine. In the bubble-shaped swimming pool physostome filling bubbles was first performed in conjunction with the opening of the mouth and eye pigmentation larvae. Phsycolist form filled swim bladder with air which diffuses through the tapped insang.Pada snapper larvae, swim bladder is filled the first time when the larvae begin to eat food from outside.
Cases of mass death of fish larvae snapper because swimbladder stress syndrome caused by (SBSS) for not functioning swim bladder. Symptoms can be seen from the changes in fish such lakuk, swim sideways on the surface, swim at the surface with the back sticking out, swim with the roll-roll body and swim in the upper abdomen. SBSS can be caused by a variety of factors influence either single or combination of handling. Temperature is too high, high salinity, lighting, algal blooms, oxygen depletion and bacteria.
Preventive maintenance can be done by the larvae in a small tank in the room with enough water replacement system, constant temperature, dim lighting and water fitrasi.
Preventive maintenance can be done by the larvae in a small tank in the room with enough water replacement system, constant temperature, dim lighting and water fitrasi.
Posts
0 comments :
Post a Comment