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When mating, the female seahorse deposits up to 1,500 (average of 100 to 1,000) eggs in the male's pouch, located on the ventral abdomen at the base of the tail. Male juveniles develop pouches when they are 5–7 months old. The male carries the eggs for 9 to 45 days until the seahorses emerge fully developed, but very small.
Superfetation (also spelled superfoetation – see fetus) is the simultaneous occurrence of more than one stage of developing offspring in the same animal. [1] [2] [3]In mammals, it manifests as the formation of an embryo from a subsequent menstrual cycle, while another embryo or fetus is already present in the uterus.
Sperm cells can live inside a female's body for up to five days, and once ovulation occurs, the egg remains viable for 12–48 hours before it begins to disintegrate. [4] Superfecundation most commonly happens within hours or days of the first instance of fertilization with ova released during the same cycle.
A seahorse (also written sea-horse and sea horse) is any of 46 species of small marine bony fish in the genus Hippocampus. The genus name comes from the Ancient Greek hippókampos ( ἱππόκαμπος ), itself from híppos ( ἵππος ) meaning "horse" and kámpos ( κάμπος ) meaning "sea monster" [ 4 ] [ 5 ] or "sea animal". [ 6 ]
Occasionally a human birth is anything but ordinary. A recent report highlighted a rare case from 2010, in which a baby girl born in Hong Kong was found to be carrying twin fetuses. The study ...
Females can produce eggs faster than males can brood them, and are limited by the size of the male's brood pouch, which cannot carry all the eggs of a female similar to himself in size. [9] [10] Male brood time is approximately four to six weeks, during which time the male provides oxygen and nutrients to the developing embryos until they hatch.
It's crazy how high risk mono-mono twins can be, and how good they're doing now, it's really a blessing," says Magnani. Ava and Anna were delivered by C-section on Thursday, weighing just four and ...
The short-snouted seahorse (Hippocampus hippocampus) is a species of seahorse in the family Syngnathidae. It is endemic to the Mediterranean Sea and parts of the North Atlantic, particularly around Italy and the Canary Islands. In 2007, colonies of the species were discovered in the River Thames around London and Southend-on-Sea. [4]