Related topics: females · offspring

Lionfish ear-bones reveal a more mobile invasion

Just as lions are apex predators on land, lionfish in Florida are an underwater force to be reckoned with. The biggest threat they pose, however, is not their venomous spines. It is the alarming speed and ferocity with which ...

Bonobo moms play an active role in helping their sons find a mate

Many social animals share child-rearing duties, but research publishing May 20 in the journal Current Biology finds that bonobo moms go the extra step and actually take action to ensure their sons will become fathers. From ...

Being a dad is hard when you're a plainfin midshipman fish

Each spring, male plainfin midshipman fish (Porichthys notatus) —a kind of toadfish —emerge from the depths of the Pacific Ocean to breed on the beach. They overwhelm the beach at low tide, wedge themselves beneath ...

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Reproductive success

Reproductive success is defined as the passing of genes onto the next generation in a way that they too can pass those genes on. In practice, this is often a tally of the number of offspring produced by an individual. A more correct definition, which incorporates inclusive fitness, is the relative production of fertile offspring by a genotype. For example, the offspring produced as a result of normal mating are an example of reproductive success, because they too can pass their genetic material on to the next generation. Alternatively, the birth of a mule as a result of the mating of a horse and a donkey is not an example of reproductive success because the mule is sterile and thus not able to continue the germ line.

Reproductive success is part of the calculation for fitness and a key element in the theories of natural selection and evolution.

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