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Female, male and juvenile big-bellied seahorses make "click" sounds while feeding, often paired with a head movement called a "snick". Females click more frequently than males, suggesting a possible link to sexual selection. Click frequency is correlated with body condition, indicating that these sounds may provide clues about the seahorse’s ...
The male seahorse is equipped with a brood pouch on the ventral, or front-facing, side of the tail. When mating, the female seahorse deposits up to 1,500 eggs in the male's pouch. The male carries the eggs for 9 to 45 days until the seahorses emerge fully developed, but very small. The young are then released into the water, and the male often ...
The males do not have to compete with other males, and female anemone fish are typically larger. When a female dies a juvenile (male) anemone fish moves in, and "the resident male then turns into a female and reproductive advantages of the large female–small male combination continue". [22] In other fishes sex changes are reversible.
The male parent of a horse, a stallion, is commonly known as the sire and the female parent, the mare, is called the dam. [1] Both are genetically important, as each parent genes can be existent with a 50% probability in the foal. Contrary to popular misuse, "colt" refers to a young male horse only; "filly" is a young female.
In zoology, copulation is animal sexual behavior in which a male introduces sperm into the female's body, especially directly into her reproductive tract. [ 1 ] [ 2 ] This is an aspect of mating . Many aquatic animals use external fertilization , whereas internal fertilization may have developed from a need to maintain gametes in a liquid ...
The evolutionary benefit to this phenomenon is that a male can fertilize multiple females. [6] The male may be reinvigorated repeatedly for successful insemination of multiple females. [7] This type of mating system can be referred to as polygyny, where one male has multiple female mates, but each female mates with only one or a few males. [5]
Horses are generally huge animals, but a Belgian Gelding named Big Jake is officially the tallest of them all. The 15-year-old Guinness World Records titleholder measures just under 6 feet 11 ...
Male and female guppies from high-predation regions mature faster and start reproducing earlier, and they devote more resources to reproduction than those from low-predation regions. [18] Females from high-predation regions reproduce more frequently and produce more offspring per litter, indicating that they are more fecund than low-predation ...