ANGLERFISH Fuses Body with Partner for Sexual Intimacy

ANGLERFISH Fuses Body with Partner for Sexual Intimacy

ANGLERFISH Fuses Body with Partner for Sexual Intimacy
Photo: The Daily Mail UK

A recent study shows deep-sea anglerfish fuses bodies with their partners when they mate.

READ: Scientists Discover How Some Fishes Become “INVISIBLE”

According to the Daily Mail report, the smaller male anglerfish becomes permanently attached to the relatively gigantic female. Their tissues fuse, creating a common blood circulation system.

The sea creatures present “sexual parasitism.” The male becomes entirely dependent on the female for nutrient supply. Further, the male supplies sperm while receiving nutrients from the female.

The female anglerfish develops a new type of immune system recognizing the male as part of its own, allowing them to host up to eight mates simultaneously.

Scientists call this process “as anatomical joining,” which is like the condition of rare genetically identical twins for humans.

In other species, sexual parasitism automatically attacks foreign tissues and destroy the cells of the other. However, the anglerfish has a protective immunity in order to have reproductive success.

Researchers investigated the deep-sea creature how it overcomes tissue-rejection and performed such an intense union.

ANGLERFISH Fuses Body with Partner for Sexual Intimacy
Photo: The Daily Mail UK

Sexual parasitism existed for 100 years after the discovery of the first attached couple in 1920 an Icelandic fisheries biologist.

Anglerfish that permanently attach are largely lacking the genes that encode these major histocompatibility (MHC) molecules. These also are at the surface of the body’s cells and signal an alarm to the immune system when infected.

Further, the report explained that the study shows that vertebrates can survive without the adaptive immune facilities previously considered to be irreplaceable.

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