Platythyrea

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Platythyrea
Temporal range: Eocene – Recent 52.2–0  Ma
Platythyrea punctata casent0003323 profile 1.jpg
Platythyrea punctata worker
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Formicidae
Subfamily: Ponerinae
Tribe: Platythyreini
Emery, 1901
Genus: Platythyrea
Roger, 1863
Type species
Pachycondyla punctata
Roger, 1863
Diversity [1]
45 species
Synonyms

EubothroponeraClark, 1930

Platythyrea is a genus of predaceous ants in the subfamily Ponerinae and the sole member of the tribe Platythyreini. [2]

Contents

Distribution

The genus has a worldwide distribution, and is found in the tropics and subtropics of the world. [3]

Description

Workers are small to very large in size (4–20 mm). Gamergates (reproductive female workers) are known from all studied species except one, P. conradti, which have ergatoid queens (wingless reproductive ants, intermediate in form between workers and winged queens). Some species with gamergates also have alate queens, which are similar to the workers but winged. [3]

The effects of central fusion and terminal fusion on heterozygosity Central fusion and terminal fusion automixis.svg
The effects of central fusion and terminal fusion on heterozygosity

Parthenogenesis

Parthenogenesis is a natural form of reproduction in which growth and development of embryos occur without fertilisation. Thelytoky is a particular form of parthenogenesis in which the development of a female individual occurs from an unfertilized egg. Automixis is a form of thelytoky, but there are different kinds of automixis. The kind of automixis relevant here is one in which two haploid products from the same meiosis combine to form a diploid zygote (see diagram).

Colonies of Platythyrea punctata from Florida and the Caribbean Islands produce offspring almost exclusively by automictic thelytoky. [4] Automixis appears to involve central fusion of two of the haploid products of meiosis (see diagram). This form of automixis tends to maintain heterozygosity in transmission of the genome from mother to offspring, and to minimize inbreeding depression. Furthermore, crossover recombination occurs at a greatly reduced rate during meiosis, [4] which likely restrains the transition from heterozygosity to homozygosity.

Species

Related Research Articles

<span class="mw-page-title-main">Hymenoptera</span> Order of insects comprising sawflies, wasps, bees, and ants

Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. Over 150,000 living species of Hymenoptera have been described, in addition to over 2,000 extinct ones. Many of the species are parasitic. Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible. This ovipositor is often modified into a stinger. The young develop through holometabolism —that is, they have a wormlike larval stage and an inactive pupal stage before they mature.

<span class="mw-page-title-main">Ponerinae</span> Subfamily of ants

Ponerinae, the ponerine ants, is a subfamily of ants in the Poneromorph subfamilies group, with about 1,600 species in 47 extant genera, including Dinoponera gigantea - one of the world's largest species of ant. Mated workers have replaced the queen as the functional egg-layers in several species of ponerine ants. In such queenless species, the reproductive status of workers can only be determined through ovarian dissections.

<span class="mw-page-title-main">Myrmicinae</span> Subfamily of ants with cosmopolitan distribution whose pupae do not create cocoons

Myrmicinae is a subfamily of ants, with about 140 extant genera; their distribution is cosmopolitan. The pupae lack cocoons. Some species retain a functional sting. The petioles of Myrmicinae consist of two nodes. The nests are permanent and in soil, rotting wood, under stones, or in trees.

<span class="mw-page-title-main">Thelytoky</span>

Thelytoky is a type of parthenogenesis and is the absence of mating and subsequent production of all female diploid offspring as for example in aphids. Thelytokous parthenogenesis is rare among animals and reported in about 1,500 species, about 1 in 1000 of described animal species, according to a 1984 study. It is more common in invertebrates, like arthropods, but it can occur in vertebrates, including salamanders, fish, and reptiles such as some whiptail lizards.

<i>Aphaenogaster</i> Genus of ants

Aphaenogaster is a genus of myrmicine ants. About 200 species have been described, including 18 fossil species. They occur worldwide except in South America south of Colombia, sub-Saharan Africa, and Antarctica.

<i>Cataglyphis</i> Genus of ants

Cataglyphis is a genus of ant, desert ants, in the subfamily Formicinae. Its most famous species is C. bicolor, the Sahara Desert ant, which runs on hot sand to find insects that died of heat exhaustion, and can, like other several other Cataglyphis species, sustain body temperatures up to 50°C. Cataglyphis is also the name of an autonomous rover that won the NASA Sample Return Robot Centennial Challenge inspired by the navigation approaches used by desert ants.

<i>Crematogaster</i> Genus of ants

Crematogaster is an ecologically diverse genus of ants found worldwide, which are characterised by a distinctive heart-shaped gaster (abdomen), which gives them one of their common names, the Saint Valentine ant. Members of this genus are also known as cocktail ants because of their habit of raising their abdomens when alarmed. Most species are arboreal (tree-dwelling). These ants are sometimes known as acrobat ants.

<i>Diacamma</i> Genus of ants

Diacamma is a genus of queenless ants belonging to the subfamily Ponerinae. It is distributed from India to Australia and contains about 24 species.

<i>Anochetus</i> Genus of ants

Anochetus is a genus of small, carnivorous ants found in the tropics and subtropics throughout the world.

<i>Hypoponera</i> Genus of ants

Hypoponera is a genus of ants in the subfamily Ponerinae. The genus has a worldwide distribution and is found in all continents except Antarctica.

<i>Dolichoderus</i> Genus of ants

Dolichoderus is a genus of ants found worldwide.

<i>Ooceraea biroi</i> Species of ant

Ooceraea biroi, the clonal raider ant, is a queenless clonal ant in the genus Ooceraea. Native to the Asian mainland, this species has become invasive on tropical and subtropical islands throughout the world. Unlike most ants, which have reproductive queens and mostly nonreproductive workers, all individuals in a O. biroi colony reproduce clonally via thelytokous parthenogenesis. Like most dorylines, O. biroi are obligate myrmecophages and raid nests of other ant species to feed on the brood.

<i>Simopone</i> Genus of ants

Simopone is a genus of predominantly arboreal ants in the subfamily Dorylinae. The genus is widely distributed in the Old World tropics, with the majority of species in Madagascar and sub-Saharan Africa.

<i>Bothroponera</i> Genus of ants

Bothroponera is a genus of ants in the subfamily Ponerinae. It is distributed in Africa and Asia.

<i>Ectomomyrmex</i> Genus of ants

Ectomomyrmex is a ponerine genus of ants found in Asia and Australia. Little is known about their biology, but they seem to be generalist predators of arthropod prey.

<i>Hagensia</i> Genus of ants

Hagensia is a small genus of ants in the subfamily Ponerinae. Its two species are known only from coastal areas in South Africa. Workers are large (10.5–13.0 mm); queens are unknown, but gamergates occurs in both species.

<i>Mesoponera</i> Genus of ants

Mesoponera is an Old World genus of ants in the subfamily Ponerinae. It is found in the tropics, from Sub-Saharan Africa to Australia.

Ophthalmopone is a ponerine genus of ants found in Sub-Saharan Africa. Workers are slender and large in size (8–13.5 mm). Queens seem to be absent, but gamergates present.

<i>Pseudoneoponera</i> Genus of ants

Pseudoneoponera is a ponerine genus of ants found from India to Australia, they are mostly non queen species, most of the species within the genus thrives on only gamergates.

<i>Cataglyphis cursor</i> Species of ant

Cataglyphis cursor is a species of ant in the genus Cataglyphis. Described in 1846, it is known only from the Mediterranean parts of France.

References

  1. Bolton, B. (2015). "Platythyrea". AntCat. Retrieved 10 January 2015.
  2. "Genus: Platythyrea". AntWeb.
  3. 1 2 Schmidt, C. A.; Shattuck, S. O. (2014). "The higher classification of the ant subfamily Ponerinae (Hymenoptera: Formicidae), with a review of ponerine ecology and behavior". Zootaxa . 3817 (1): 1–242. doi:10.11646/zootaxa.3817.1.1. PMID   24943802.
  4. 1 2 Kellner, Katrin; Heinze, Jürgen (2010). "Mechanism of facultative parthenogenesis in the ant Platythyrea punctata". Evolutionary Ecology. 25 (1): 77–89. doi:10.1007/s10682-010-9382-5. S2CID   24645055.