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Haplodiploidy is a sex-determination system in which males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid. [1] Haplodiploidy is sometimes called arrhenotoky. Haplodiploidy determines the sex in all members of the insect orders Hymenoptera (bees, ants, and wasps) [2] and Thysanoptera ...
Diploid males are known to be produced by inbreeding in many ant, bee, and wasp species. Diploid biparental males are usually sterile but a few species that have fertile diploid males are known. [13] One consequence of haplodiploidy is that females on average have more genes in common with their sisters than they do with their daughters.
Bombus muscorum, commonly known as the large carder bee or moss carder bee, is a species of bumblebee in the family Apidae. The species is found throughout Eurasia in fragmented populations, but is most commonly found in the British Isles. [2] [3] B. muscorum is a eusocial insect. The queen is monandrous, mating with only one male after leaving ...
The majority of parasitoids for bumble bees are flies and about 30 percent or more bees within the area can be infected. The process of parasitism consists of the fly attaching to the bee in flight and inserting her oviposits between the terga of the bee. The larval fly hatches within the bee host and develops by feeding on the host’s tissues.
Bombus ignitus is part of the order Hymenoptera, which is the third largest order of insects. It is a member of the family Apidae, consisting of bees, and the subfamily Apinae, which contains the majority of species within Apidae. The subfamily Apinae consists of 14 tribes, including the tribe Bombini, which B. ignitus is a part of.
Suckley’s cuckoo bumble bee may be classified as endangered under the Endangered Species Act after a recommendation from the U.S. Fish and Wildlife Service. This social parasite is native to 15 ...
Tetraploidy (four sets of chromosomes, 2n = 4x) is common in many plant species, and also occurs in amphibians, reptiles, and insects. For example, species of Xenopus (African toads) form a ploidy series, featuring diploid (X. tropicalis, 2n=20), tetraploid (X. laevis, 4n=36), octaploid (X. wittei, 8n=72), and dodecaploid (X. ruwenzoriensis ...
However, despite the shortcomings of the haplodiploidy hypothesis, it is still considered to have some importance. For example, many bees have female-biased sex ratios and/or invest less in or kill males. Analysis has shown that in Hymenoptera, the ancestral female was monogamous in each of the eight independent cases where eusociality evolved. [2]