Unlike the other parasitic groups, the monogeneans are external parasites infesting aquatic animals, and their larvae metamorphose into the adult form after attaching to a suitable host.

The adult worms are free living, but the larvae are parasitic on beetles, cockroaches, orthopterans, and crustaceans.

The majority of crustaceans are also motile, moving about independently, although a few taxonomic units are parasitic and live attached to their hosts ( including sea lice, fish lice, whale lice, tongue worms, and Cymothoa exigua, all of which may be referred to as " crustacean lice "), and adult barnacles live a sessile life – they are attached headfirst to the substrate and cannot move independently.

Species more or less completely parasitic include the leafless quintral, Tristerix aphyllus, which lives deep inside the sugar-transporting tissue of a spiny cactus, appearing only to show its tubular red flowers, and the genus Arceuthobium ( dwarf mistletoe ; Santalaceae ) which has reduced photosynthesis ; as an adult, it manufactures only a small proportion of the sugars it needs from its own photosythesis but as a seedling it actively photosynthesizes until a connection to the host is established.

Nectar-rich plants that bloom for long periods are especially good, as many beneficials are nectivorous during the adult stage, but parasitic or predatory as larvae.

Some adult parasitic cuckoos completely destroy the host's clutch if they reject the cuckoo egg.

For example, gall mites like Phyllocoptes variabilis ( family Eriophyidae ) have a worm-like body with only two pairs of legs ; some parasitic mites have only one or three pairs of legs in the adult stage.

Varroa destructor and Varroa jacobsoni are parasitic mites that feed on the bodily fluids of adult, pupal and larval bees.

For example, a complex life cycle of Fasciola hepatica, a parasitic flatworm, includes three different multicellular generations: 1 ) " adult " hermaphroditic ; 2 ) sporocyst ; 3 ) redia.

The adult flies are not parasitic, but when they lay their eggs in open wounds and these hatch into their larval stage ( also known as maggots or grubs ), the larvae feed on live and / or necrotic tissue, causing myiasis to develop.

A parasitic fly, Lucilia bufonivora, attacks adult common toads.

In contrast to most intestinal helminthiases, where the heaviest parasitic loads tend to occur in children, hookworm prevalence and intensity can be higher among adult males.

Their bauplan is uniquely reduced in an extreme adaptation to their parasitic lifestyle, and makes their relationship to other barnacles unrecognisable in the adult form.

Tapeworm Infestation is the infection of the digestive tract by adult parasitic flatworms called cestodes or tapeworms.

Amphibians have a juvenile stage and an adult stage and the circulatory systems of the two are distinct.

In the adult stage, amphibians ( especially frogs ) lose their gills and develop lungs.

Almost all of these frogs live in wet tropical rainforests and their eggs hatch directly into miniature versions of the adult, passing through the tadpole stage within the egg.

Life consists of constant growth and our adult children may yet reach a stage when Judaism has new meaning for them.

The first film is in three sections: Kal-El's infancy on Krypton ( shot in London on the 007 stage ), Clark Kent's teen years in Smallville, and Kent / Superman's adult life in Metropolis ( shot in New York City ).

Most animals have a larval stage, with a body plan different from that of the adult organism.

During the second stage, from 12 to about 16, reason starts to develop ; and finally the third stage, from the age of 16 onwards, when the child develops into an adult.

* In biology, meconium describes the metabolic waste product from the pupal stage of an insect that is expelled through the anal opening of the adult upon eclosion from the pupa.

These insects either have hemimetabolous development, and undergo an incomplete or partial metamorphosis, or holometabolous development, which undergo a complete metamorphosis, including a pupal or resting stage between the larval and adult forms.

Otherwise put, each successive stage in the development of an individual represents one of the adult forms that appeared in its evolutionary history.

For example, Haeckel proposed that the pharyngeal grooves between the pharyngeal arches in the neck of the human embryo resembled gill slits of fish, thus representing an adult " fishlike " developmental stage as well as signifying a fishlike ancestor.

But these embryonic pharyngeal arches, grooves, pouches, and slits in human embryos could not at any stage carry out the same function as the gills of an adult fish.

Darwin's view, that early embryonic stages are similar to the same embryonic stage of related species but not to the adult stages of these species, has been confirmed by modern evolutionary developmental biology.

Pablo Ruiz y Picasso, known as Pablo Picasso (, 25 October 1881 – 8 April 1973 ), was a Spanish painter, sculptor, printmaker, ceramicist, and stage designer who spent most of his adult life in France.

Fixations that develop during the Infantile stage contribute to adult personality and behavior.

Some species ( such as Dunn's Salamander ) exhibit no larval stage at all, with the young hatching as miniature versions of the adult.

Again, the distinction seen between the layers at this stage is not comparable to that seen in the adult tissue.

In a few species, the trochophore does not develop directly into the adult, but into an intermediate pelagosphaera stage, that possesses a greatly enlarged metatroch ( ciliated band ).

The indirect way of development is known to end in an extended pelagic plankotrophic tornaria larval stage, which means that this hemichordate exists in a larval stage that feeds on plankton before turning into an adult worm.

Those species that are direct developing bypass this prolonged larval stage and develop directly into an adult worm.

The eggs are planktonic, or attached to algae, and hatch into miniature versions of the adult, without a well-defined larval stage.

The egg hatches into a miniature version of the adult, without a larval stage.

The three cartoonists were close personal friends and professional associates throughout their adult lives, and occasionally referenced each other in their strips.

Compared to other primates, human breasts are proportionately large throughout adult females ' lives.

The common chimpanzee lives in a fission-fusion society and may be found in groups of the following types: all-male, adult females and offspring, consisting of both sexes, or one female and her offspring.

* Tying Your Own Shoes An animated documentary that provides insight into the lives of four adult artists with Down Syndrome, by National Film Board of Canada

' Amnesty International ' notes that in a country where the average life expectancy is 61 or 62, this means many spend their entire adult lives in the army, frequently facing hard labor and meager wages.

The reports also state that nearly 46 % of the male subjects had " reacted " sexually to persons of both sexes in the course of their adult lives, and 37 % had at least one homosexual experience.

11. 6 % of white males ( ages 20 – 35 ) were given a rating of 3 ( about equal heterosexual and homosexual experience / response ) throughout their adult lives.

If an organism lives half as long as others of its species, but has twice as many offspring surviving to adulthood, its genes will become more common in the adult population of the next generation.

* The Bengal tiger ( Panthera tigris tigris ), also called the Indian tiger, lives in India, Nepal, Bhutan and Bangladesh, and is the most common subspecies with populations estimated at less than 2, 500 adult individuals.

Despite their large adult sizes, crocodiles start their lives at around long.

The early-stage larvae and the short-lived adult males are free-living, but most of their lives are spent as endoparasites in other insects, such as bees, wasps, leafhoppers, silverfish, and cockroaches.

Striped bass spawn in freshwater and although they have been successfully adapted to freshwater habitat, they naturally spend their adult lives in saltwater ( i. e., it is anadromous ).

Many silks are mainly produced by the larvae of insects undergoing complete metamorphosis, but some adult insects such as webspinners produce silk, and some insects such as raspy crickets produce silk throughout their lives.

After emerging from the pupa, the adult fly rarely lives more than a few days, and serves mainly to reproduce and to disperse in search of new food sources.

The signatures of Washington and Lincoln changed only slightly during their adult lives, while John F. Kennedy's signature was different virtually every time he signed.

It has been seen in many cases that the failure to retain stardom and success has caused many child actors to lead adult lives plagued by legal troubles, bankruptcy, and drug abuse.

In this book, Mentzer shows why people need to use their reasoning ability to live happy, mature, adult lives, and he shows readers how to go about doing so.

* Children won't learn what they need to know in their adult lives.

The freshwater environments of the islands host a freshwater fish, the Koaro or climbing galaxias, which lives in saltwater as a juvenile but which returns to the rivers as an adult.

The geographies of childhood involves how ( adult ) society perceives the very idea of childhood and the many ways the attitudes and behaviors of adults affects children's lives.

Bulimics are much more likely than non-bulimics to have an affective disorder, such as depression or general anxiety disorder: A 1985 Columbia University study on female bulimics at New York State Psychiatric Institute found 70 % had suffered depression some time in their lives ( as opposed to 25. 8 % for adult females in a control sample from the general population ), rising to 88 % for all affective disorders combined.

The elder daughters, Eveanna and Beverly, had moved out of their parents ' home and started their adult lives.

The term parasitoid was coined in 1913 by the German writer O. M. Reuter ( and adopted in English by his reviewer, William Morton Wheeler ) to describe the strategy in which, during its development, the parasite lives in or on the body of a single host individual, eventually killing that host, the adult parasitoid being free-living.