Squash bee

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Squash bee
Peponapis pruinosaCane-12.JPG
Peponapis pruinosa
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Apidae
Subfamily: Apinae
Tribe: Eucerini
Genera

Peponapis
Xenoglossa


The name squash bee, also squash and gourd bee, is applied to two related genera of bees in the tribe Eucerini; Peponapis and Xenoglossa . Both genera are oligoleges (pollen specialists) on the plant genus Cucurbita and closely related plants, although they usually do not visit watermelon, cucumber, and melon plants. [1] They are small genera, containing only 13 and 7 described species, respectively, and their combined range is nearly identical to the range of Cucurbita in the New World, from South America to North America. Their range has become somewhat expanded along with the movement of cucurbits into other areas (as crop plants).

Contents

Species such as Peponapis pruinosa have been in decline due to several reasons, probably at least in part to pesticide sensitivity. [2]

Description

Xenoglossa strenua Xenoglossa strenua, F, Back, MD, Upper Marlboro 2014-08-22-18.09 (31871782730).jpg
Xenoglossa strenua

These bees are of moderate size, equal to various bumblebees. Compared to honeybees, squash bees are larger and bulkier, with longer antennae and rounder faces. [3] The pollen-carrying hairs on their legs (the scopa) are unbranched or nearly so, to accommodate the exceptionally large, coarse pollen of the host plants. These hairs may be sparse, however among Peponapis, the hind legs are fuzzy and brushlike. [4] Males lack these hairs, as they do not carry pollen. [3]

Squash bees have also evolved a matinal daily activity cycle, flying before sunrise. Some Xenoglossa species have become morphologically specialized to fly while it is still dark, with greatly enlarged ocelli to allow them to fly in near-darkness.[ citation needed ]

The two genera are sometimes thought to be sister taxa, but enough differences occur between them to suggest the similarities may be due to convergent evolution, based on their adaptation to use the same host plants. [5]

Life cycle

Squash bees build ground-based nests; they are solitary and do not live in colonies, but are sometimes gregarious. [4] Each pollen-gathering female digs her own nest, which consists of a vertical tunnel terminated by a loose grouping of individual nest cells. [3]

As pollinators

Studies have been carried out to compare Peponapis and honey bees regarding their effectiveness in pollinating cucurbits. The findings point to the squash bees being more effective and suggest the current practice of renting colonies of honey bees to perform this task may be unnecessary. [6] [7]

Squash yield is fully dependent on insect pollinators. Plants pollinated by squash bees include summer squash, winter squash, zucchini, pumpkins, and many gourds excepting cucumbers. [3]

Related Research Articles

<span class="mw-page-title-main">Bee</span> Clade of insects

Bees are winged insects closely related to wasps and ants, known for their roles in pollination and, in the case of the best-known bee species, the western honey bee, for producing honey. Bees are a monophyletic lineage within the superfamily Apoidea. They are currently considered a clade, called Anthophila. There are over 20,000 known species of bees in seven recognized biological families. Some species – including honey bees, bumblebees, and stingless bees – live socially in colonies while most species (>90%) – including mason bees, carpenter bees, leafcutter bees, and sweat bees – are solitary.

<span class="mw-page-title-main">Pollinator</span> Animal that moves pollen from the male anther of a flower to the female stigma

A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.

<i>Cucurbita</i> Genus of herbaceous vines in the gourd family, Cucurbitaceae

Cucurbita is a genus of herbaceous fruits in the gourd family, Cucurbitaceae, native to the Andes and Mesoamerica. Five edible species are grown and consumed for their flesh and seeds. They are variously known as squash, pumpkin, or gourd, depending on species, variety, and local parlance. Other kinds of gourd, also called bottle-gourds, are native to Africa and belong to the genus Lagenaria, which is in the same family and subfamily as Cucurbita, but in a different tribe. These other gourds are used as utensils or vessels, and their young fruits are eaten much like those of the Cucurbita species.

<span class="mw-page-title-main">Bumblebee</span> Genus of insect

A bumblebee is any of over 250 species in the genus Bombus, part of Apidae, one of the bee families. This genus is the only extant group in the tribe Bombini, though a few extinct related genera are known from fossils. They are found primarily in higher altitudes or latitudes in the Northern Hemisphere, although they are also found in South America, where a few lowland tropical species have been identified. European bumblebees have also been introduced to New Zealand and Tasmania. Female bumblebees can sting repeatedly, but generally ignore humans and other animals.

<span class="mw-page-title-main">Pollination</span> Biological process occurring in plants

Pollination is the transfer of pollen from an anther of a plant to the stigma of a plant, later enabling fertilisation and the production of seeds, most often by an animal or by wind. Pollinating agents can be animals such as insects, for example beetles; birds, butterflies, and bats; water; wind; and even plants themselves. Pollinating animals travel from plant to plant carrying pollen on their bodies in a vital interaction that allows the transfer of genetic material critical to the reproductive system of most flowering plants. When self-pollination occurs within a closed flower. Pollination often occurs within a species. When pollination occurs between species, it can produce hybrid offspring in nature and in plant breeding work.

<i>Cucurbita pepo</i> Species of flowering plant that yields varieties of squash and pumpkin

Cucurbita pepo is a cultivated plant of the genus Cucurbita. It yields varieties of winter squash and pumpkin, but the most widespread varieties belong to the subspecies Cucurbita pepo subsp. pepo, called summer squash.

<span class="mw-page-title-main">Pollination management</span> Horticultural practices to enhance pollination

Pollination management is the horticultural practices that accomplish or enhance pollination of a crop, to improve yield or quality, by understanding of the particular crop's pollination needs, and by knowledgeable management of pollenizers, pollinators, and pollination conditions.

<span class="mw-page-title-main">Mason bee</span> Genus of insects

Mason bee is a name now commonly used for species of bees in the genus Osmia, of the family Megachilidae. Mason bees are named for their habit of using mud or other "masonry" products in constructing their nests, which are made in naturally occurring gaps such as between cracks in stones or other small dark cavities. When available, some species preferentially use hollow stems or holes in wood made by wood-boring insects.

<i>Cucurbita ficifolia</i> Plant species cultivated for edible shoots, leaves, flowers, fruit, and seeds

Cucurbita ficifolia is a species of squash, grown for its edible seeds, fruit, and greens. It has common names including Asian pumpkin, black seed squash, chilacayote, cidra, fig-leaf gourd, and Malabar gourd. Compared to other domesticated species in its genus, investigators have noted that samples of C. ficifolia from throughout its range are relatively similar to one other in morphology and genetic composition. Variations do occur in fruit and seed color, some isozymes, and photoperiod sensitivity.

<span class="mw-page-title-main">Palynivore</span> Group of herbivorous animals

In zoology, a palynivore /pəˈlɪnəvɔːɹ/, meaning "pollen eater" is an herbivorous animal which selectively eats the nutrient-rich pollen produced by angiosperms and gymnosperms. Most true palynivores are insects or mites. The category in its strictest application includes most bees, and a few kinds of wasps, as pollen is often the only solid food consumed by all life stages in these insects. However, the category can be extended to include more diverse species. For example, palynivorous mites and thrips typically feed on the liquid content of the pollen grains without actually consuming the exine, or the solid portion of the grain. Additionally, the list is expanded greatly if one takes into consideration species where either the larval or adult stage feeds on pollen, but not both. There are other wasps which are in this category, as well as many beetles, flies, butterflies, and moths. One such example of a bee species that only consumes pollen in its larval stage is the Apis mellifera carnica. There is a vast array of insects that will feed opportunistically on pollen, as will various birds, orb-weaving spiders and other nectarivores.

<i>Cucurbita foetidissima</i> Species of flowering plant

Cucurbita foetidissima is a tuberous xerophytic plant found in the central and southwestern United States and northern Mexico. It has numerous common names, including: buffalo gourd, calabazilla, chilicote, coyote gourd, fetid gourd, fetid wild pumpkin, Missouri gourd, prairie gourd, stinking gourd, wild gourd, and wild pumpkin. The type specimen was collected from Mexico by Alexander von Humboldt and Aimé Bonpland sometime before 1817. In Latin, foetidissima means ill smelling.

<i>Bombylius major</i> Species of fly

Bombylius major is a parasitic bee mimic fly. B. major is the most common type of fly within the Bombylius genus. The fly derives its name from its close resemblance to bumblebees and are often mistaken for them.

<span class="mw-page-title-main">Western honey bee</span> European honey bee

The western honey bee or European honey bee is the most common of the 7–12 species of honey bees worldwide. The genus name Apis is Latin for "bee", and mellifera is the Latin for "honey-bearing" or "honey carrying", referring to the species' production of honey.

<span class="mw-page-title-main">Pumpkin</span> Category of culinary winter Cucurbita squashes

A pumpkin, in English-language vernacular, is a cultivated winter squash in the genus Cucurbita. The term is most commonly applied to round, orange-colored squash varieties, though it does not possess a scientific definition and may be used in reference to many different squashes of varied appearance.

<i>Cucurbita argyrosperma</i> Species of plant

Cucurbita argyrosperma, also called the cushaw squash and silver-seed gourd, is a species of winter squash originally from the south of Mexico. This annual herbaceous plant is cultivated in the Americas for its nutritional value: its flowers, shoots, and fruits are all harvested, but it is cultivated most of all for its seeds, which are used for sauces. It was formerly known as Cucurbita mixta.

<span class="mw-page-title-main">California carpenter bee</span> Species of bee

The California carpenter bee, Xylocopa californica, is a species of carpenter bee in the order Hymenoptera, and it is native to western North America.

<i>Eucera</i> Genus of bees

Eucera is a genus of bees in the family Apidae, which comprises more than 100 species. These bees are commonly known as long-horned bees due to their characteristically long antennae, especially in males. Eucera species can be found in diverse habitats, including meadows, fields, and urban gardens, primarily in the Palearctic and Nearctic regions, covering parts of Europe, Asia, North Africa, and North America.

<i>Peponapis pruinosa</i> Species of bee

Peponapis pruinosa is a species of solitary bee in the tribe Eucerini, the long-horned bees. Its common name is the eastern cucurbit bee. It may be called the squash bee, but this name can also apply to other species in its genus, as well as the other squash bee genus, Xenoglossa. This bee occurs in North America from the East Coast of the United States to the West Coast and into Mexico. It is an oligolege, specializing on a few host plants, the squashes and gourds of genus Cucurbita. Its range expanded as human agriculture spread throughout North America and squash plants became more abundant and widespread. It may also have spread naturally as the range of its favored wild host plant Cucurbita foetidissima expanded.

<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.

References

  1. Colley, Micaela; Zystro, Jared. The Seed Garden. John Torgrimson, Seed Savers Exchange. p. 34.
  2. Williams, Roger (2009). "Effects of imidacloprid-based Insecticides on the Native Cucurbit Pollinator, Peponapis pruinosa". US Interagency IPM Projects. Archived from the original on October 4, 2013. Retrieved September 15, 2013.
  3. 1 2 3 4 "Squash Bees | NC State Extension Publications". content.ces.ncsu.edu. Retrieved 2020-01-03.
  4. 1 2 "Squash Bees". www.fs.fed.us. Retrieved 2020-01-03.
  5. Hurd, Paul D.; Linsley, E. Gorton (1971). "Squash and Gourd Bees (Peponapis, Xenoglossa) and the Origin of the Cultivated Cucurbita". Evolution . 25 (1): 218–234. doi:10.2307/2406514. JSTOR   2406514.
  6. Canto-Aguilar, M.L.; Parra-Tabla, V. (2000). "Importance of Conserving Alternative Pollinators: Assessing the Pollination Efficiency of the Squash Bee, Peponapis limitaris in Cucurbita moschata (Cucurbitaceae)". Journal of Insect Conservation. 4 (3): 201–208. doi:10.1023/A:1009685422587.
  7. Tepedino, V. J. (April 1981). "The pollination efficiency of the squash bee (Peponapis pruinosa) and the honey bee (Apis mellifera) on summer squash (Cucurbita pepo)". Journal of the Kansas Entomological Society. 54 (2): 359–377. JSTOR   25084168.