yolk sac

After about two months, their own yolk sacs go dry.

After the yolk sac is absorbed by the body, they begin to hunt.

For the first few days they live on the yolk sac while their digestive systems continue to develop.

The developing embryos are at first sustained by a yolk sac.

The fry swim after seven days and absorb the yolk sac in two weeks.

One can find pigment on the yolk sac and posterodorsal to the eye.

At around nine days they venture out of the tunnel their yolk sacs exhausted already 14mm long.

Following this, external feeding begins once the yolk sac has depleted.

The embryos are supported in placental yolk sac inside the mother.

Here, the gut tube maintains an attachment to the yolk sac.

Instead of laying eggs, they release tiny fish, usually enclosed in yolk sacs.

Young Arrowana should not have a yolk sac - and be seen feeding before purchase.

Whereas, in that study, yolk sac tumors were very responsive to chemotherapy.

Each looks more like an uncooked grain of rice, with big black eyes and a yolk sac.

Young are born freeswimming with relatively little or no yolk sac, and begin feeding immediately.

This membrane along with hypoblast forms the primary yolk sac.

Also, Primordial germ cells are first found in the wall of the yolk sac.

Even if the yolk sac is not visible, still be sure that is feeding before parting with your money.

The yolk sac of the larvae was small.

These live off the yolk sac for about twenty-four days before settling and starting filter feeding.

The males continue to protect the eggs until they have absorbed their yolk sac and are ready to distribute themselves.

Up to the first 60 days of life, the yolk sac is the main source of hematopoesis.

Lateral plate mesoderm extends about halfway out over the yolk sac.

The heart begins to coil and blood flows on to the dorsal face of the yolk sac.

After five to seven days of being wigglers, the fish have almost completely consumed their yolk sacs and become free swimming.