Sentences with phrase «male after mating»

Which of the following females often eat the male after mating?.

The common name widow spiders is sometimes applied to members of the genus due to the behavior of the female of eating the male after mating, although sometimes the males of some species are not eaten after mating, and can go on to fertilize other females

There are other examples of intra-species violence — one example that comes to mind is species like spiders, where the females will eat the males after mating.

Not exact matches

Genesis tells what God intended and it was God created them male and female — man needed a mate and that was a female — The bible used to be very hard to understand but I sought the Lord with all my heart and I read it now and it does not contradict itself — Many prayers have been answered and I believe in Jesus Christ as Lord and Savior — I can not imagine living in this world as it is and not having that anchor that holds me together day after day.

They say that other species in which males show a similar testosterone decline are generally those in which there is innate paternal care for offspring, compared to species where there is no paternal care after mating.

Black leaders started voicing their concern about this state of affairs almost immediately after Cuomo picked Rochester Mayor Bob Duffy — a white male upstater — to be his preferred LG running mate.

Males die after mating

The study, led by Dr Allan Debelle and Dr Rhonda Snook in the University's Department of Animal and Plant Sciences, looked at the mating patterns of fruit flies after they evolved for 100 generations in either polyandrous populations (where several males have to compete for a single female) and monogamous populations (where each male has access to only one female).

If the female decides that the male is a suitable candidate for mating after listening to his singing, she will spawn in his nest.

As I point out in one section about male preferences, there's a tendency to focus on older males who reenter the mating market after divorce, and evolutionary psychologists take this to be pretty firmly clinching evidence in favor of their hypothesis.

Sometimes — but not all the time — she devours the male after he jumps on her back to mate, seen here.

(Nevertheless, after 24 hours even females that mated with males lacking HP - I rejected additional partners, suggesting that other chemicals transmitted by the male are responsible for influencing female behavior over the long term.)

Five to eight weeks after the transplant, Wu and colleagues mated those mice with healthy males.

After mating, the female stashes sperm from several males in a specialized organ called a spermatheca before using some of the stored sperm to fertilize her eggs.

That work revealed that after mating, seminal fluid proteins passed from males to females led to changes in gene expression in females and led females to increase egg production, reduce feeding and decrease their likelihood to mate again.

Soon after mating, the females quit trying to adjust their flight tones to harmonize with the males.

The females» loss of interest after a single mating suggests that if they could be fooled into pairing with mutant males — laboratory - reared to generate sterile offspring — they might duck out of the mating game for several egg cycles, or perhaps permanently.

The animals shed their outer male organs 15 to 30 minutes after mating, but they were equipped for love again after roughly 24 hours.

In other cases, males and females look so similar to one another that males can not tell if potential mates are female until after they have mounted them.

After a series of unsuccessful matings between the zoo's first pandas, a female named Ling - Ling and a male named Hsing - Hsing, the zoo brought in another male from London to mate with Ling - Ling, Kleiman recalls.

Among lingcod, Bishop explained, the male not only chooses the nesting area — which he uses to help attract a mate — but also guards the nest after the female deposits her eggs there.

Lygaeus equestris is shown after mating with processus uncoiled and a close - up of the external male genitalia after mating (from a 3 - D X-ray scan).

But these males mate for life, reuniting with the same female year after year during mating season.

A female white - spotted frog responds to the mating call by entering into the bamboo section to lay her eggs on the inner walls of the section, leaving after the male frog has fertilised the eggs.

The biology of aphids is bizarre: they can be born pregnant and males sometimes lack mouths, causing them to die not long after mating.

After a female chooses a large male, he places his sperm packet inside her oviduct and stays with her until she spawns so that no other male has a chance to mate with her.

After mating and living with a pregnant female, a male mouse will switch behavior and begin taking care of the offspring — even if they are not his.

Self - castration after once - in - a-lifetime sex helps coin spiders protect their mate from the unwanted attentions of other males

After each pair had mated and the male's palp was left in the female, the researchers dissected the female and counted the sperm in her abdomen and the amount remaining in the embedded palp.

Male Darwin's bark spider use genital lubrication and binding to stop their mates from eating them after copulation

So far, only males have ventured into Arizona, likely searching for territory and mates after dispersing from a breeding population about 130 miles south of the border in Mexico.

For the first time, scientists studied these cephalopods in captivity, allowing 24 octopuses (13 male and 11 female) to mate in large tanks after acclimatizing to their new homes.

MOST male spiders bail out after mating — but not one South American species.

Led by first author Junsu Kang, the scientists identified anatomical structures that male fish use during mating that produce a signal that impedes regeneration of the pectoral fins after injury.

After comparing the brains of males with offspring with brains of childless males in mating pairs, Kozorovitskiy and Gould found that fathers not only had more connections between neurons in their prefrontal cortex, a region involved in anticipating consequences and attaining goals, but they also had more receptors for vasopressin, a neurohormone linked to social interaction and bonding.

«We found that female hyenas prefer to mate with males who have immigrated into their pack, or who were born into the clan after the female was born,» says Höner.

Floating can be a successful breeding strategy as bachelor males avoid investing their energy into defending territory and looking after chicks, instead spending time searching for mates.

Males rarely force females to mate, but after years spent observing the animals in the wild, Huchard noticed that a subtler form of sexual coercion appeared to be going on.

The male dies after mating and is absorbed by the host's body, so that's not so bad.

The mating season brings about violent tendencies in adult males, who regularly kill cubs to trigger sexual receptivity in mothers who would otherwise come into heat only after raising their cubs to independence.

The males grab her by the neck and forcibly mate with her, one after the other, while her partner watches helplessly from afar.

Interactions between the two sexes and between competing males commonly occur after the pageantry of courtship and mating subsides, and the battles reach all the way down to the level of genitalia and gametes.

Female fruit flies become aggressive after mating because of a peptide in the male's sperm.

Six homozygote males were each mated with two wild type females and individually produced no pups after four months.

The organ of male orb spiders break apart inside the female after mating, providing the male with an oppportunity to escape before being devoroued by his partner.

The «abhorrent» dating tactics of the male redback spider: Scientists find they target immature females who haven't yet learnt to eat them after mating Car companies use crash test dummies when they want to figure out how to make their vehicles safer.

After learning just how much a male stripper act like the Chippendales make for performing at local bars, Gaz recruits his own ragtag group — including best mate, Dave (Mark Addy) and former boss, Gerald (Tom Wilkinson)-- to put on a show of their own.

• A female chicken will mate with many different males, but if she decides, after the deed is done, that she doesn't want a particular rooster's offspring, she can eject his sperm.

Male ticks often die after mating.

Testosterone blood levels drop slowly after neutering and male rabbits will still try to mate with female rabbits for several weeks after the testicles are removed.