How dolphins reproduce offspring, how dolphins reproduce

After reaching the age of sexual maturity and having the ability to reproduce, dolphins will choose to breed during the appropriate breeding season.

Breeding age: Dolphins need to reach the right age before they can breed. Generally speaking, although female dolphins ovulate at a few years old, they are not yet able to reproduce, but only after a few years are they truly capable of reproducing.

Male dolphins have the ability to mate after they are mature.

Mating: Female and male dolphins mate during the appropriate breeding season. Male dolphins generally leave immediately after mating.

Childbirth: This is followed by the process of the female dolphin giving birth to her calves. It will take a long time in between, maybe about 11 months, similar to that of humans.

However, dolphins are born differently from humans, because dolphins come out with their tails first, and humans come out with their heads first. The whole process of delivery will take about 3 hours.

Breastfeeding: Newborn baby dolphins generally weigh about 1 kg, accounting for about 5% of the weight of female dolphins. As mammals, dolphins also need to be sucked.

Newborn dolphins are usually always with their mothers. It is not until they are about three years old that the baby dolphins learn to hunt and other survival skills, and they do not leave their mothers. During this growing up, its mother and other whales in the group will always protect the calf from killer whales, sharks and other creatures.

In vivo fertilization, viviparous lactation.

Dolphins are fish and are oviparous.

Dolphins are viviparous. Although dolphins are similar in appearance to fish and live in water, they are not fish, but mammals. One of the most important features is the way they reproduce, with dolphins reproducing in viviparity and lactation after giving birth.

In fact, animals such as dolphins, whales, and seals breathe with their lungs, viviparously, and lactate, so they are all mammals.

Common viviparous species:Mammals: bats, seals, fur seals, dolphins, baboons, pangolins, meerkats, anteaters, sea otters, domestic animals, felines, rodents, primates, etc.

The higher groups of mammals in vertebrates, such as monkeys, tigers, cattle, sheep, wolves, etc., are all viviparous.

Special case: African viviparous toads are a genus of toads endemic to Tanzania. Some of the species below it have very unusual reproductive characteristics. They are all viviparous and are the only toads in the world that do not lay eggs.

In vivo fertilization mode of reproduction.

It takes about 5 years for females to become sexually mature and ovulate, but it takes a few more years for them to become truly fertile. Once the male dolphin matures, he soaks in the female group all day long, looking for his "favorite person". Once they fall in love, they use lightning tactics and leave the country immediately after mating.

As mammals, dolphins have many characteristics that are similar to humans. However, because dolphins live in the sea, they are born in a slightly different way from humans on land. Dolphin cubs are born with their tails first, while human babies are born with their heads first.

Females usually have to be pregnant for 11 months before giving birth to calves.

When the female dolphin gives birth, she first bends her body into an arch, while struggling to swim forward, and bends her tail sharply, so that it lasts for nearly an hour before the tip of the baby's tail lobe begins to be revealed, and after another two hours, the baby dolphin is born.

Dolphins are large carnivores at the top of the food chain and are largely unendangered by marine life except for the more ferocious sharks. It can be said that dolphins are facing such a survival dilemma, and the biggest driving force behind it is still humans.

The development of the global fishing industry has brought about unprecedented fishing intensity and breadth, and it can be said that wherever there are fish, there will be more and more modern fishing tools and means. Despite the availability of more environmentally friendly fishing techniques, traditional methods are still widely available, causing extinction to dolphins all over the world. The intention is to catch fish, but the problem of catching dolphins by mistake still happens from time to time; In one net, the big fish and small fish are all caught in the net, and the dolphins can only watch their food become a human meal.

In East Asia (Japan), South Asia, Southeast Asia, and parts of Africa and South America, dolphin hunting has been a constant custom for thousands of years. According to statistics, in the 90 days after **, 53% of dolphins died of depression; The average natural lifespan of dolphins is 45 years, but half of the dolphins die within two years, and their average life span is only 5 years; In the artificial environment, dolphins are highly susceptible to pneumonia, enteritis and other diseases, and will not survive for seven years due to chlorine poisoning and long-term depression and panic.

Due to the wide distribution and variety of dolphins, scientists have not been able to give exact data on their existing numbers, but we should not be blindly optimistic.

As early as 2008, the International Union for Conservation of Nature (IUCN) reported that about a quarter of the existing cetaceans and dolphins are threatened to varying degrees of survival, or even extinction.

Dolphins reproduce in viviparity. The dolphin is a species of mammal and is therefore viviparous. It takes a few years for a female dolphin to become truly fertile after ovulation.

Male dolphin chains can mate after they are sexually mature. Male and female dolphins usually mate during the summer, and after mating, the female dolphin goes through about 11 months of gestation and then gives birth to a baby dolphin after about 3 hours of delivery. <

Dolphins reproduce in viviparity. Dolphins are a type of mammal and hence reproduce viviviparously. It takes a few years for a female dolphin to become truly fertile after ovulation.

Male dolphins are ready to mate after they are sexually mature. Male and female dolphins usually mate during the summer, and after mating, the female dolphin goes through about 11 months of gestation and then gives birth to a baby dolphin after about 3 hours of delivery, where she reproduces.