Polistes dominula
Encyclopedia
Polistes dominula sometimes referred to as the European paper wasp, is one of the more common and well-known species of social wasps in Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

. It is considered an invasive species in Canada
Canada
Canada is a North American country consisting of ten provinces and three territories. Located in the northern part of the continent, it extends from the Atlantic Ocean in the east to the Pacific Ocean in the west, and northward into the Arctic Ocean...

 and the United States
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

.

Life cycle

Nests are begun by overwintered founding queens or foundresses, who spend about a month in the spring constructing a nest and provisioning offspring, the first of which will become daughter workers in the growing colony. Males are produced later, and when they start to appear, a few daughters may mate and leave their nest, to become foundresses the next season. The switch from production of workers to production of future foundresses ("gyne
Gyne
Gyne is the primary reproductive female caste of social insects . Gynes are those destined to become queens, whereas female workers are typically sterile and cannot become queens...

s") is not utterly abrupt, therefore, as has been considered the case for other species of Polistes.

The colony disperses in the late summer, with only males and future foundresses produced instead of workers, and individuals frequently cluster in groups (called a hibernaculum
Hibernaculum (zoology)
Hibernaculum plural form: hibernacula is a word used in zoology to refer to a place of abode in which a creature seeks refuge, such as a bear using a cave to overwinter. Insects may hibernate to survive the winter. The word can be used to describe a variety of shelters used by various kinds of...

) to overwinter. Hibernation does not usually take place on former nest sites.

Dominance hierarchy system

Morphologically, there is little difference between the foundress and subordinate reproductive members of the colony. However, several studies have shown that behavioural differentiation occurs, with the role an individual female takes being determined by social interaction within the colony. Typically, the alpha female dominates all other individuals of a colony, and this female lays the majority of eggs, and partakes in differential oophagy
Oophagy
Oophagy , literally "egg eating", is the practice of embryos feeding on eggs produced by the ovary while still inside the mother's uterus. The word oophagy is formed from the classical Greek ᾠόν and classical Greek φᾱγεῖν ....

. The alpha female devotes much of her time to social interaction, in comparison to subordinates that are much more involved in foraging and brood care.

These behavioural divisions are not permanent; if an alpha female is removed from a nest then another female (usually the second-most dominant, beta female) assumes the role and behavioural profile of the removed dominant. Indeed, individuals alternate between different profiles of behaviour within their own dominance rank position.

Some studies seem to indicate that the dominant female, through its behaviour, suppresses the ovarian development of subordinates. Abdominal wagging is thought to serve as a dominance signal between dominant foundresses and subordinates, but studies by Roseler and Roseler (1989) showed that ovariectomised dominants failed to restrict subordinate reproduction whilst still retaining dominance.

There are also evidently some factors present in the interactions of females on the nest that can influence which daughters become workers and which become gynes; despite some minor physiological differences (primarily in the fat body), "gyne-destined" females produced late in the colony cycle can be induced to become workers if placed on nests that are at an earlier stage of colony development, and the converse is also true. This indicates a significant degree of flexibility in the caste system of this species.

Nestmate recognition

Dominant individuals of P. dominula have differing cuticular profile to workers, and the frequent observations of the dominant female stroking its gaster
Gaster
The gaster is the bulbous posterior portion of the metasoma found in Apocrita Hymenoptera . This begins with abdominal segment III on most ants, but some make a postpetiole out of segment III, in which case the gaster begins with abdominal segment IV....

s across the nest surface, combined with its staying on the nest for longer times than subordinates, suggests that the dominant individual may contribute more to the nest odour.

Distribution

The native range
Range (biology)
In biology, the range or distribution of a species is the geographical area within which that species can be found. Within that range, dispersion is variation in local density.The term is often qualified:...

 of P. dominula covers much of southern Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...

 and North Africa
North Africa
North Africa or Northern Africa is the northernmost region of the African continent, linked by the Sahara to Sub-Saharan Africa. Geopolitically, the United Nations definition of Northern Africa includes eight countries or territories; Algeria, Egypt, Libya, Morocco, South Sudan, Sudan, Tunisia, and...

, and temperate
Temperate
In geography, temperate or tepid latitudes of the globe lie between the tropics and the polar circles. The changes in these regions between summer and winter are generally relatively moderate, rather than extreme hot or cold...

 parts of Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...

 as far east as China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

. It has also been introduced to Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 and North
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...

 and South America
South America
South America is a continent situated in the Western Hemisphere, mostly in the Southern Hemisphere, with a relatively small portion in the Northern Hemisphere. The continent is also considered a subcontinent of the Americas. It is bordered on the west by the Pacific Ocean and on the north and east...

.

This species was introduced into the United States in 1968 in the New Jersey Pine Barrens
Pine Barrens (New Jersey)
The Pine Barrens, also known as the Pinelands, is a heavily forested area of coastal plain stretching across southern New Jersey. The name "pine barrens" refers to the area's sandy, acidic, nutrient-poor soil, to which the crops originally imported by European settlers didn't take well...

 and spread throughout most of the country during the 1980s and 90s, in some cases partially replacing native species. Another introduction was discovered in the late 1970s in Cambridge
Cambridge
The city of Cambridge is a university town and the administrative centre of the county of Cambridgeshire, England. It lies in East Anglia about north of London. Cambridge is at the heart of the high-technology centre known as Silicon Fen – a play on Silicon Valley and the fens surrounding the...

, Newton and Somerville, Massachusetts
Massachusetts
The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

. The first wave consisted of solitary-founding but socially-nesting individuals, then a wave of social founders (several females found a new nest together). In warmer regions there have been reports of "supercolonizers" most of whom enlarge their natal nests in successive years, rather than dispersing.

In the United States, Polistes dominula nests earlier in the spring, in a wider variety of nest sites, and feeds on a larger variety of insects than native species, which feed almost exclusively on caterpillars. Most entomologists consider it to be an invasive species
Invasive species
"Invasive species", or invasive exotics, is a nomenclature term and categorization phrase used for flora and fauna, and for specific restoration-preservation processes in native habitats, with several definitions....

. This wasp can be mistaken for a yellowjacket
Yellowjacket
Yellowjacket is the common name in North America for predatory wasps of the genera Vespula and Dolichovespula. Members of these genera are known simply as "wasps" in other English-speaking countries...

, as it is black strongly marked with yellow, in a pattern very reminiscent of a yellowjacket, and quite different from the native North American species of Polistes
Polistes
Wasps of the cosmopolitan genus Polistes are the most familiar of the polistine wasps, and are the most common type of paper wasp. It is also the single largest genus within the family Vespidae, with over 300 recognized species and subspecies...

.

Nomenclature

P. dominula is frequently referred to as Polistes gallicus
Polistes gallicus
Polistes gallicus is a fairly common species of European paper wasp, almost indistinguishable from the European paper wasp, Polistes dominula, with which it had long been confused. Nearly every reference to "P. gallicus" prior to 1985 was actually referring to P...

, which is a separate species. It was originally described in 1791 by Johann Ludwig Christ
Johann Ludwig Christ
Johann Ludwig Christ was a German naturalist, gardener and pastor.He was a specialist in Hymenoptera who published in 1791 Naturgeschichte, Klassifikation und Nomenklatur der Insekten vom Bienen, Wespen und Ameisengeschlecht...

 as Vespa dominula. The specific epithet , is a noun meaning "little mistress", and following the International Code of Zoological Nomenclature
International Code of Zoological Nomenclature
The International Code of Zoological Nomenclature is a widely accepted convention in zoology that rules the formal scientific naming of organisms treated as animals...

, species epithets which are nouns do not change when a species is placed in a different genus. Authors unaware that dominula was a noun have misspelled the species name as dominulus for decades.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
x
OK