Diapause

The last generation of the summer enters into a non-reproductive phase known as diapause and may live seven months or more. ❋ Unknown (2008)

The answer, says Hazel, is a clever feat of adaptation called diapause that allows butterflies to live through months of freezing weather. ❋ Unknown (2010)

"diapause" - in which their metabolism lowers and simultaneously, their freezing points, as they drop into dormancy or bug hibernation. ❋ Unknown (2010)

Some insects do this in the real world, it's called "diapause". starkraving on May 17, 2008 ❋ Unknown (2008)

While environmental factors cause and stop diapause, changes in the environment and unpredictable weather patterns global warming!!! can have an adverse effect on insects by releasing them from hibernation too early. ❋ Cara Hoffman (2011)

However, it is known that some species enter a reproductive diapause when reared at constant temperature in the laboratory (e. g., the collembolan Hypogastrura tullbergi), and that this diapause can only be terminated by exposure to cold. ❋ Unknown (2009)

Examples include life-history strategies incorporating resting stages and diapause, unique physiological mechanisms to store energy and nutrients, an ability to grow and reproduce quickly during brief growing seasons, and extended life spans relative to more temperate species. ❋ Unknown (2009)

The evolution of diapause in the killifish family rivulidae (Atherinomorpha, Cyprinodontiformes): A molecular, phylogenetic, and biogeographic perspective. ❋ Unknown (2008)

If unfavourable environmental conditions, such as declines in temperature, oxygen or food availability, occur, the copepodite larvae of some freshwater species can enter a diapause stage until conditions improve. ❋ Unknown (2008)

Aside from this variation in mating systems, many freshwater crustaceans produce two types of eggs: one which develops immediately, while the other which may diapause for up to several hundred years. ❋ Unknown (2008)

Larvae sustain growth in cold water, but diapause when the temperatures rise. ❋ Unknown (2008)

They spend the winter in diapause, waiting for the world to become more hospitable before they come to life again. ❋ Unknown (2008)

In places like Winnipeg, it seems that only a relative few species have perfected the diapause to such a degree that they can proliferate when the days start to grow long. ❋ Unknown (2008)

Aside from this variation in mating system, many crustaceans produce two types of eggs: one which develops immediately, while the other which may diapause for up to several hundred years. ❋ Unknown (2007)

- 37°C range of rel. humidity: 2 to 50% optimal rel humidity: 25% eggs laid: 50 - 80 life cycle: 25 days at 37°C and 25% r.h. larval diapause up to 4 years ❋ Unknown (1996)

"When they enter diapause, their metabolism slows, and they produce chemicals that prevent their tissues from freezing," Hazel says. ❋ Unknown (2010)

Hazel and his students are trying to figure out if butterflies enter diapause based on the temperature in previous years -- in other words, whether butterflies have some sort of internal calendar, passed on through previous generations. ❋ Unknown (2010)

Michaud MR, Denlinger DL (2006) Oleic acid is elevated in cell membranes during rapid cold-hardening and pupal diapause in the flesh fly, ❋ Jos? R. Verd? Et Al. (2010)