Male fairy shrimp have an enlarged pair of antennae with which they grasp the female during mating, while the bottom-feeding Notostraca, the antennae are reduced to vestiges.

If breeding hamsters, separation of the pair after mating is recommended, or they will attack each other.

The last 2 descendants of Prune, a brother-sister pair, were sent to Holland in the 1970s, but the male was uninterested in mating and the female conceived only once, but lost the litter.

* One of a pair of animals involved in mating

The Magdeburg hemispheres are a pair of large copper hemispheres with mating rims, used to demonstrate the power of atmospheric pressure.

When they pair off with mating partners, often one or several drakes end up " left out ".

After mating, the pair will return to their solitary habits.

A tap is used to cut the female portion of the mating pair ( e. g., a nut ).

A die is used to cut the male portion of the mating pair ( e. g., a screw ).

One of the tree-villages is defending the territory of an active Spotted Owl mating pair.

A mating pair will court several times during breeding periods to strengthen their bond.

Group spawning and pair spawning occur within mating systems.

Even in aviary studies in which a female Goldcrest was given an artificial eyestripe to facilitate mating with a male Firecrest, the chicks were never raised by the mixed pair, and appeared to be poorly adapted compared to the parent species.

Even in aviary studies in which a female Goldcrest was given an artificial eyestripe to facilitate mating with a male Firecrest, the chicks were never raised by the mixed pair, and appeared to be poorly adapted compared to the parent species.

While a mating pair composed of two castes may produce offspring together, the offspring are usually sterile, as with the Mediators.

File: Nembrotha millleri mating. jpg | A pair of Nembrotha milleri mating at Verde Island, the Philippines.

If the nest is destroyed or a mating pair produces a failed brood, an attempt to re-nest may occur but this ultimately depends on when the brood fails.

When these behaviors are noticed, a mating pair should be provided with a sturdy wicker nest about the size of a large apple or orange.

The art is also exceptional for its time for including " scenes ," e. g., animals interacting with each other ; a pair of wooly rhinoceroses, for instance, are seen butting horns in an apparent contest for territory or mating rights.

A male and female macaque will form a pair bond and mate, feed, rest and travel together, and this typically lasts 1. 6 days on average during the mating season.

The term " primary helper " being used for the commoner case of the helper being offspring of the pair and not involved in mating.

A mating pair required a very large area of untouched mature forest to survive, approximately ; outside the breeding season, the birds apparently formed small groups of a handful to a dozen individuals and moved about a wider area, apparently in response to availability of food ( Lammertink et al., 1996 ).

While reports on many such mating scenarios are still only anecdotal, a growing body of scientific work confirms that permanent homosexuality occurs not only in species with permanent pair bonds, but also in non-monogamous species like sheep.

An affected person mating with a heterozygous individual ( Aa or aA, also carrier ) there is a 50-50 chance the offspring will be albino's phenotype.

That individual may not have had anything to do with the mating of the mare.

Attraction is the more individualized and romantic desire for a specific candidate for mating, which develops out of lust as commitment to an individual mate forms.

For example, slime molds secrete cyclic adenosine monophosphate upon starvation, stimulating individual cells in the immediate environment to aggregate, and yeast cells use mating factors to determine the mating types of other cells and to participate in sexual reproduction.

During mating, each individual places a spermatophore onto the neck of its partner after rupture of the seminal vesicle.

Ecological selection ( or environmental selection or survival selection or individual selection or asexual selection ) refers to natural selection minus sexual selection, i. e. strictly ecological processes that operate on a species ' inherited traits without reference to mating or secondary sex characteristics.

For human reproduction, the theory states that dreams of pairing, bonding and mating stimulate the reflex to reproduce the species, with an emphasis on dreams that promote the principle of selection ; the desire of the individual to find the best mate and to achieve the optimum genetic mixing.

Haldane's remark alluded to the fact that if an individual loses its life to save two siblings, four nephews, or eight cousins, it is a " fair deal " in evolutionary terms, as siblings are on average 50 % identical by descent, nephews 25 %, and cousins 12. 5 % ( in a diploid population that is randomly mating and previously outbred ).

In April or May, more bulls may join the herd for mating, and individual bulls may move from herd to herd, each mating with many cows.

Sexual contact during mating flights is not considered to be any indication of a dragonrider's preference in either individual or gender preference.

A female of that species can only conceive by mating with two different males within a few hours of each other ; thus, every individual has a mother and two fathers, and every family is composed of a female and two males.

The Rough-legged Hawk is thought to be monogamous, mating with a single individual for multiple years.

However, in vascular plants this is mostly achieved without physical contact between mating individuals ( see pollination ), and in some cases, e. g., in fungi no distinguishable male or female organs exist ( see isogamy ); however, mating types in some fungal species are somewhat analogous to sexual dimorphism in animals, and determine whether or not two individual isolates can mate.

It is monogamous, mating with the same individual for many years.

While the density of sidewinders can be up to 1 individual per hectare, individuals rarely encounter each other except during mating season.

During the mating season, males and females make acoustic calls to each other over distances, with at least the males having individual variability in their vocalising sequence patterns.

The individual sperm are often large, and are coiled up within the testis prior to mating ; in some cases, the uncoiled sperm can be up to six times the length of the male ostracod itself.

Mating in many sea slugs appears to be based on controlled sperm trading between the individual sea slugs, but there are some species in which mating appears to occur freely due to the unconditional willingness of both sea slugs to give and receive sperm for reproduction.

The temptation to draw conclusions about what is " natural " for human sexual behavior from observations of animal mating systems should be resisted: a socio-biologist observing the kinds of behavior shown by humans in any other species would conclude that all known mating systems were natural for that species, depending on the circumstances or on individual differences.

Animal communication systems ( or ACSs ) only convey information that relates to individual survival, mating and reproduction, and social signals.