Tetragonula iridipennis

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Tetragonula iridipennis
Smallbee.JPG
A hive of Tetragonula iridipennis
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Apidae
Genus: Tetragonula
Species:
T. iridipennis
Binomial name
Tetragonula iridipennis
Smith, 1854
Tetragonula iridipennis range.jpg
It is found in India, Sri Lanka, and Indonesia
Synonyms
  • Trigona iridipennisSmith, 1854
  • Trigona (Tetragonula) iridipennisSmith, 1854
  • Trigona (Heterotrigona) iridipennisSmith, 1854 [1]
  • Melipona iridipennisAuctt.

The Indian stingless bee or dammar bee, Tetragonula iridipennis, is a species of bee belonging to the family Apidae, subfamily Apinae. It was first described by Frederick Smith in 1854 who found the species in what is now the island of Sri Lanka. [2] Many older references erroneously placed this species in Melipona , an unrelated genus from the New World, [3] and until recently it was placed in Trigona , therefore still often mistakenly referred to as Trigona iridipennis. For centuries, colonies of T. iridipennis have been kept in objects such as clay pots so that their highly prized medicinal honey can be utilized. [2]

Contents

Taxonomy and phylogenetics

Tetragonula iridipennis belongs to the complex genus of stingless bees Tetragonula which contains more than 30 described species from the Indian subcontinent. Until recently, all species in the group were treated as belonging to the single genus "Trigona". Tetragonula iridipennis belongs to the smaller Iridipennis species group which includes four primary species: Tetragonula iridipennis, Tetragonula praeterita, Tetragonula ruficornis, and Tetragonula bengalensis. These four species were proposed in the 19th century and were poorly characterized. They have since not been directly compared via molecular studies; therefore there is uncertainty about whether they are in fact separate species. [2]

Description and identification

Like other bees in its sub-species group, T. iridipennis can be identified by its dark mesoscutum or middle thorax region with four distinct hair bands separated by broad glabrous interspaces. It can be further distinguished from other species in its sub group by its chestnut-brown colored mandible which does not have a black apical area and a few dark brown erect setae or hair-like structures on the margin of its scutellum. Other species in the subgroup have yellow mandibles which have black apical areas and have light colored setae on their scutella. [2] Based on studies of workers, T. indipennis has a total body length ranging from 3.5-4.0 mm and an entire body which is black to blackish brown. Size differences as well as male genitalia are key for identifying the species. They are relatively small sized bees and the male penis valve is very robust and tapers only at the apex. Male genitalia are also key to differentiating between male and female bees because the two sexes are very similar in size and color. [4]

Distribution and habitat

T. iridipennis is a tropical bee species and is found throughout the Indo-Malay region. Its range was once thought to go as far as the Solomon and Caroline islands, but unlike other Tetragonula species, its range is fairly limited. [4] [5] Although it was originally discovered on the island of Sri Lanka, it is predominantly found in India. Specifically, studies have been conducted on T. iridipennis colonies located in Karnataka, Kerala, and Tamil Nadu. [6] T. iridipennis also occurs on the islands of Indonesia where it is a natural pollinator.[ citation needed ]

Colony cycle

As with other highly eusocial bee species, T. iridipennis colonies are founded by swarming. However, this process is different for stingless bees like T. iridipennis and honey bees. In honeybees, the process is abrupt and a large group of workers leaves the original colony with the old queen, thus few connections are maintained between the old and the new colonies. The process is more gradual for stingless bees such as T. iridepennis. First scout workers from the original nest find a new nest site and gradually transport resources there from the mother colony. A virgin queen from the mother colony then arrives usually accompanied by a mass of workers. It is only after several days to half a year that relations between the mother and daughter colonies are severed. [7]

Behavior

Mating behavior

Like males in other stingless bee species, there is tremendous competition between T. iridipennis males to copulate with virgin queens. Males have been observed to form large aggregations and to engage in mass flights near nests waiting for the emergence of virgin females. [5] Once a virgin queen emerges, it pairs with one of the males and a mating flight ensues, resulting in the fertilization of the queen.

Life history

Males

While no detailed studies have been done on colony composition of T. iridipennis nests, in keeping with other stingless bee species, it is expected that the total number of males produced per colony is lower than that of workers. In some tropical species, male stingless bees stay for an extended time in nests. They then leave the nests and form aggregations. [5]

Camouflage

Nest

Common nesting sites include tree trunks, logs and wall cavities. The nests are relatively low to the ground and are constructed at heights between 1.93 meters and 2.2 meters from the ground. [8] Nests tend to be dark brown in color in order to blend in with their surroundings. The Indian tree species Cycas sphaerica appears to be an important nest provider for T. iridipennis. [9]

Interactions with other species

Diet

T. iridipennis collects nectar from many herbal plants such as the coco palm and the Jackfruit tree.[ citation needed ] They also collect sap from tree species such as Cycas sphaerica. [9]

Tetragonula iridipennis feeds on the nectar of the Jack fruit tree Jack fruit on tree.jpg
Tetragonula iridipennis feeds on the nectar of the Jack fruit tree

Predators

The centipede species Scolopendra hardwickei is a specialized predator for stingless bee species like T. iridipennis.[ citation needed ] Predators like spiders, flies, wasps, and lizards are also a constant threat to T. iridipennis colonies because they invade nests to eat their rich honey stores. T. iridipennis defends against these predators by preventing access to its nest. It seals pores of the hive with a substance created by mixing its own salivary gland secretions with plant-derived resins. This substance called propolis also has favorable mechanical properties and is used by T. iridipennis to protect its nest from wind and rain.[ citation needed ]

Human importance

Agriculture

While they are currently not widely utilized as agricultural pollinators in South Asia, a study by Ramadhani et al. indicates that T. iridipennis can potentially be applied as pollinator agents for tomato farming as opposed to non-native honey bees such as the European honey bee (Apis mellifera L.) While they were shown to exhibit lower pollination efficiency, fruit sizes were not significantly affected. In addition, their low price and their harmlessness make them ideal candidates for low income farmers or those concerned about the safety risk associated with stinging honey bees.[ citation needed ]

Medicinal honey

T. iridipennis stores its honey in pots which are within a food storage zone of the nest. The food storage zone contains a honey storage pot and a pollen storage pot, but these are often intermixed. [8] The honey of T. iridipennis is a rich source of antioxidant flavanoids. This is because workers collect honey from medicinally important herbal plants and flowers. The quantity of honey produced is a relatively small 600-700 grams per year.[ citation needed ]

Propolis

Tetragonula iridipennis propolis has notable pharmacological properties Propolis.jpg
Tetragonula iridipennis propolis has notable pharmacological properties

While T. iridipennis gathers propolis to reinforce its nest, people have harvested it and discovered it to have a wide spectrum of pharmacological activities. Propolis exhibits notable antibacterial and antiviral properties. [9] The pharmacological properties of propolis are dependent on a variety of factors including plants visited by the T. iridipennis hive and the amount of pollution present in their environment.[ citation needed ]

Related Research Articles

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<i>Apis florea</i> Species of bee

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<i>Tetragonula carbonaria</i> Species of bee

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<i>Trigona spinipes</i> Species of bee

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<i>Bombus fervidus</i> Species of bee

Bombus fervidus, the golden northern bumble bee or yellow bumblebee, is a species of bumblebee native to North America. It has a yellow-colored abdomen and thorax. Its range includes the North American continent, excluding much of the southern United States, Alaska, and the northern parts of Canada. It is common in cities and farmland, with populations concentrated in the Northeastern part of the United States. It is similar in color and range to the American bumblebee. It has complex behavioral traits, which includes a coordinated nest defense to ward off predators. B. fervidus is an important pollinator, so recent population decline is a particular concern.

<i>Tetragonisca angustula</i> Species of bee

Tetragonisca angustula is a small eusocial stingless bee found in México, Central and South America. It is known by a variety of names in different regions. A subspecies, Tetragonisca angustula fiebrigi, occupies different areas in South America and has a slightly different coloration.

<i>Melipona bicolor</i> Species of bee

Melipona bicolorLepeletier, 1836, commonly known as Guaraipo or Guarupu, is a eusocial bee found primarily in South America. It is an inhabitant of the Araucaria Forest and the Atlantic Rainforest, and is most commonly found from South to East Brazil, Bolivia, Argentina, and Paraguay. It prefers to nest close to the soil, in hollowed trunks or roots of trees. M. bicolor is a member of the tribe Meliponini, and is therefore a stingless bee. This species is unique among the stingless bees species because it is polygynous, which is rare for eusocial bees.

<i>Plebeia remota</i> Species of bee

Plebeia remota is a species of stingless bee that is in the family Apidae and tribe Meliponini. Bees of the species are normally found in a few states in southern Brazil and their nests can be found in tree cavities. Depending on the region, P. remota may have a different morphology and exhibit different behaviors. The bee's diet consists of nectar and pollen that are collected intensely from a few sources. Researchers have conducted a multitude of studies analyzing the changes that occur in the colony during reproductive diapause and what happens during the provisioning and oviposition process or POP.

<i>Trigona corvina</i> Species of bee

Trigona corvina is a species of stingless bee that lives primarily in Central and South America. In Panama, they are sometimes known as zagañas. They live in protective nests high in the trees, but they can be extremely aggressive and territorial over their resources. They use their pheromones to protect their food sources and to signal their location to nest mates. This black stingless bees of the tribe Meliponini can be parasitic toward citrus trees but also helpful for crop pollination.

<i>Melipona subnitida</i>

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<i>Nannotrigona testaceicornis</i> Species of bee

Nannotrigona testaceicornis is a eusocial stingless bee species of the order Hymenoptera and the genus Nannotrigona. Its local common name is abelhas iraí. This species has a large geographic distribution and occupies different biomes, including urban areas, around Neotropical America. The bees of this species nest in trees or artificial cavities because of this broad distribution. N. testaceicornis is important for agriculture because it will pollinate a vast number of plant species year round.

<i>Scaptotrigona postica</i> Species of bee

Scaptotrigona postica is a species of stingless bee that lives mainly in Brazil. It is a eusocial bee in the tribe Meliponini. S. postica is one of 25 species in the genus Scaptotrigona and is a critical pollinator of the tropical rain forests of Brazil. They construct their nests in hollowed sections of tree trunks, allowing for effective guarding at the nest entrance. This species shows colony structure similar to most members of the Meliponini tribe with three roles within the colony: queen, worker, and male. S. postica individuals have different forms of communication from cuticular hydrocarbons to pheromones and scent trails. Communication is especially useful during worker foraging for nectar and pollen through the Brazilian tropical rain forests. S. postica is a very important pollinator of the Brazilian tropical rain forests and is widely appreciated for its honey. Stingless bees account for approximately 30% of all pollination of the Brazilian Caatinga and Pantanal ecosystems and up to 90% of the pollination for many species of the Brazilian Atlantic Forest and the Amazon.

<i>Melipona quadrifasciata</i> Species of bee

Melipona quadrifasciata is a species of eusocial, stingless bee of the order Hymenoptera. It is native to the southeastern coastal states of Brazil, where it is more commonly known as mandaçaia, which means "beautiful guard," as there is always a bee at the narrow entrance of the nest. M. quadrifasciata constructs mud hives in the hollows of trees to create thin passages that only allow one bee to pass at a time. Because they are stingless bees, M. quadrifasciata is often used as pollinators in greenhouses, outperforming honey bees in efficiency and leading to overall larger yields of fruits that were heavier, larger, and contained more seeds.

<i>Tetragonula hockingsi</i> Species of bee

Tetragonula hockingsi is a small stingless bee native to Australia. It is found primarily in the Northern Territory and in northern Queensland. The colonies can get quite large, with up to 10,000 workers and a single queen. Workers of Tetragonula hockingsi have been observed in fatal fights with other Tetragonula species, where the worker bees risk their lives for the potential benefit of scarce resources.

<i>Tetragonula</i> Genus of bees

Tetragonula is a genus of stingless bees. In 1961, Brazilian bee expert, Professor J.S. Moure, first proposed the genus name Tetragonula to improve the classification system by dividing the large genus Trigona stingless bees into 9 smaller groups. About 30 stingless bee species formerly placed in the genus Trigona are now placed in the genus Tetragonula. These bees are found in Oceania, in countries such as Australia, Indonesia, New Guinea, Malaysia, Thailand, The Philippines, India, Sri Lanka, and The Solomon Islands. The most recent tabulation of species listed 31 species.

<i>Melipona scutellaris</i> Species of bee

Melipona scutellaris is a eusocial stingless bee species of the order Hymenoptera and the genus Melipona. It is considered to be the reared Melipona species with the largest distribution in the North and Northeast regions of Brazil, with records from Rio Grande do Norte down to Bahia. Its common name, Uruçu, comes from the Tupi "eiru su", which in this indigenous language means "big bee". Their honey is highly desirable and the materials they create for nests have been proven to be a promising source of antibiofilm agents and to present selectivity against human cancer cell lines at low concentrations compared to normal cells.

<i>Trigona fuscipennis</i> Species of bee

Trigona fuscipennis is a stingless bee species that originates in Mexico but is also found in Central and South America. They are an advanced eusocial group of bees and play a key role as pollinators in wet rainforests. The species has many common names, including "mapaitero", "sanharó", "abelha-brava", "xnuk", "k'uris-kab", "enreda", "corta-cabelo", "currunchos", "zagaño", and "enredapelos".

<i>Trigona fulviventris</i> Species of bee

Trigona fulviventris, known by the common names "culo-de-vaca," "culo-de-señora," "mu'ul-kab," "culo-de-buey," and "culo-de-vieja," is a species of stingless bee found in neotropical regions of Central and South America. It is one of the largest and most widespread bees of its genus. They exhibit complex foraging behaviors by integrating spatio-temporal learning and flower scents. T. fulviventris has traditionally been observed to abstain from aggressive behavior with other species; however, more recent analyses have shown that T. fulviventris emit pheromones that act as attack signals particularly when related individuals are captured by predators.

<i>Lestrimelitta limao</i> Species of bee

Lestrimelitta limao is a neotropical eusocial bee species found in Brazil and Panama and is part of the Apidae family. It is a species of stingless bees that practices obligate nest robbing. They have never been spotted foraging from flowers, an observation that supports their raiding behavior. Because of their lack of hind corbiculae, they must raid to obtain enough protein in their diet in the form of pollen and nectar. Lestrimelitta limao secrete a lemon-scented alarm allomone, from which they receive their name, in order to conduct successful raids. L. limao are hypothesized to produce poisonous honey that is toxic if consumed by humans. Because robber bees are so rare and difficult to observe, there is a limited scope of information available.

References

  1. "Tetragonula iridipennis - -- Discover Life".
  2. 1 2 3 4 Rasmussen, Claus (2013-05-10). "Stingless bees (Hymenoptera: Apidae: Meliponini) of the Indian subcontinent: Diversity, taxonomy and current status of knowledge". Zootaxa. 3647 (3): 401–428. doi:10.11646/zootaxa.3647.3.1. ISSN   1175-5334. PMID   26295116.
  3. Rahman, Khan A. S. Singh. 1940. Beekeeping in India. Indian Farming 1: 10-17
  4. 1 2 Vijayakumar, K.; Jeyaraaj, R. (2014). "Taxonomic notes on stingless bee Trigona (Tetragonula) iridipennis Smith (Hymenoptera: Apidae) from India". Journal of Threatened Taxa. 6 (11): 6480–6484. doi: 10.11609/jott.o3773.6480-4 .
  5. 1 2 3 F., SAKAGAMI, Shôichi. "Tetragonula Stingless Bees of the Continental Asia and Sri Lanka (Hymenoptera, Apidae) (With 124 Text-figures, 1 Plate and 36 Tables)". hdl:2115/27635.Cite journal requires |journal= (help)
  6. Danaraddi, C.S. (2009). "Morphological studies on the stingless bee, Trigona iridipennis Smith". Journal of Agricultural Science.
  7. Inoue, Tamiji; Sakagami, Shoichi F.; Salmah, Siti; Yamane, Soichi (1984-06-01). "The Process of Colony Multiplication in the Sumatran Stingless Bee Trigona (Tetragonula) laeviceps". Biotropica. 16 (2): 100–111. doi:10.2307/2387841. JSTOR   2387841.
  8. 1 2 Danaraddi, C. S.; Viraktamath, Shashidhar; Basavanagoud, K.; Bhat, A. R. S. (2010-05-24). "Nesting habits and nest structure of stingless bee, Trigona iridipennis Smith at Dharwad, Karnataka". Karnataka Journal of Agricultural Sciences. 22 (2).
  9. 1 2 3 S., Raju, A. J.; S., Rao, K.; G., Rao, N. "Association of Indian Stingless Bee, Trigona iridipennis Smith (Apidae: Meliponinae) with Red-listed Cycas sphaerica Roxb. (Cycadaceae)". www.cabdirect.org. Retrieved 2015-10-16.