The first record of infection and sterilization by the nematode Sphaerularia in hornets (Hymenoptera, Vespidae, Vespa)

Sayama, Katsuhiko; Kosaka, Hajime; Makino, Shio

doi:10.1007/s00040-007-0912-2

Cited by 18 publications

(13 citation statements)

References 11 publications

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“…However, further studies on the characterization and identification of the kairomones are needed to understand the evolution of this species-specific phoresy and the mechanisms of host recognition. Although phoresy is commonly found in nematodes, there are very few reports on sex-specific or sex-biased associations; female-biased association has been reported in the Fergusobia nematode/Fergusonia fly mutualism (Currie, 1937;Davies et al, 2001) and Sphaerularia nematode/Bombus bee or Vespa hornet parasitism (for reviews, see Bedding, 1984;Sayama et al, 2007). However, no information is available on the mechanisms of female-biased association.…”

Section: Discussionmentioning

confidence: 99%

Species-specific recognition of the carrier insect by dauer larvae of the nematode Caenorhabditis japonica

Okumura

Tanaka

Yoshiga

2012

Journal of Experimental Biology

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SUMMARYHost recognition is crucial during the phoretic stage of nematodes because it facilitates their association with hosts. However, limited information is available on the direct cues used for host recognition and host specificity in nematodes. Caenorhabditis japonica forms an intimate association with the burrower bug Parastrachia japonensis. Caenorhabditis japonica dauer larvae (DL), the phoretic stage of the nematode, are mainly found on adult P. japonensis females but no other species. To understand the mechanisms of species-specific and female carrier-biased ectophoresy in C. japonica, we investigated whether C. japonica DL could recognize their hosts using nematode loading and chemoattraction experiments. During the loading experiments, up to 300 C. japonica DL embarked on male and female P. japonensis, whereas none or very few utilized the other shield bugs Erthesina fullo and Macroscytus japonensis or the terrestrial isopod Armadillidium vulgare. In the chemoattraction experiments, hexane extracts containing the body surface components of nymphs and both adult P. japonensis sexes attracted C. japonica DL, whereas those of other shield bugs did not. Parastrachia japonensis extracts also arrested the dispersal of C. japonica DL released at a site where hexane extracts were spotted on an agar plate; i.e. >50% of DL remained at the site even 60min after nematode inoculation whereas M. japonensis extracts or hexane alone did not have the same effect. These results suggest that C. japonica DL recognize their host species using direct chemical attractants from their specific host to maintain their association.

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Section: Discussionmentioning

confidence: 99%

Species-specific recognition of the carrier insect by dauer larvae of the nematode Caenorhabditis japonica

Okumura

Tanaka

Yoshiga

2012

Journal of Experimental Biology

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“…Nematodun boyu 1-2 mm uzunluğunda iken uterusunun kapladığı alan 15-20 mm'dir [37]. Yalnızca kraliçe ya da kraliçe olacak arıları enfekte etmektedirler [38]. Çiftleştikten sonra toprak altında diyapoza giren kraliçe arılar bu parazitle enfekte olurlar.…”

Section: Sphaerularia Bombiunclassified

Bombus Arısı Hastalık ve Parazitleri

Karsli¹,

Gürel²

2016

Nevşehir bilim teknol. derg.

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ÖzBombus arıları doğal ve tarımsal ekosistemlerdeki dünyanın en önemli tozlaştırıcıları olarak bilinmektedir. Bu nedenle, bazı bombus arısı türleri ticari olarak yetiştirilmekte ve bitkisel üretimde tozlaşma amacıyla yoğun olarak kullanılmaktadır. Ancak, son yıllarda doğal bombus arısı populasyonları ve tür çeşitliliği bütün dünyada azalmaktadır. Habitat parçalanması, pestisit kullanımı ve yanlış tarımsal uygulamalar bu azalış ve yok oluşların önemli sebepleri arasında sayılırken, özellikle parazit ve patojenlerin önemli miktarda koloni kayıplarına yol açtığı belirlenmiştir. Ticari ve doğal bombus kolonileri çok sayıda iç ve dış parazitler, protozoa, Bumblebee Diseases and Parasites AbstractBumblebees are recognized as one of the world's most important pollinators in agricultural and natural ecosystems. Therefore, some bumblebee species are commercially produced and extensively used for greenhouse pollination. On the other hand in recent years, the natural abundance and diversity of bumblebee species is in decline all over the world. There are many factors regarding the causes of bumblebees decline, climate change, habitat fragmentation with diminished floral resources and pathogens. Natural and commercially bumblebee colonies are exposed to many pathogenic internal and external parasites. The most commonly reported bumblebee protozoan pathogens are the microsporodium Nosema bombi, Crithidia bombi, Apicystis bombi, the tracheal mite, Locustacarus buchneri and the nematode Sphaerularia bombi. Generally, these parasites have detrimental effects on colonization, survival and reproduction. Therefore, the accurately identification and control of bumble bee diseases and parasites are very important. Thus, both the spread of the disease can be prevented and the healthy development of the colonies will increase pollination efficiency. In this review, the most common bumblebees diseases, ways of spread and information about disease-causing parasites are summarized.

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“…(Poinar and van der Laan 1972;Pouvreau 1974) and the reduction of colony productivity in Bombus hypnorum (Linnaeus) (Röseler 2002). Following emergence, parasitized overwintered gynes (i.e., potential queens) of hornets and bees usually live a solitary life without founding a colony (Schmid-Hempel 1998;Sayama et al 2007).…”

Section: Introductionmentioning

confidence: 99%

“…By the following spring, the uterine sacs of parasitic nematode females are developed. Instead of founding a colony, parasitized overwintered gynes look for potential hibernation sites and parasitic juveniles are released from the host's metasoma into hibernacula by late summer (Poinar and van der Laan 1972;Schmid-Hempel 1998;Sayama et al 2007Sayama et al , 2013.…”

Section: Introductionmentioning

confidence: 99%

The prevalence of the parasitic nematode Sphaerularia sp. in the overwintering gynes of Parapolybia spp. (Hymenoptera, Polistinae)

Morooka¹

2014

JHR

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I report for the first time the parasitization of overwintering gynes of Parapolybia species by the entomogenous nematode Sphaerularia sp. (Tylenchidae). The nematode was found in 42% of the overwintering wasp clusters examined but occurred in only 6% of individual wasps. The prevalence of parasitic nematodes among group hibernating hymenoptera is briefly discussed and compared with that in solitary hibernating hymenopterans.

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The first record of infection and sterilization by the nematode Sphaerularia in hornets (Hymenoptera, Vespidae, Vespa)

Cited by 18 publications

References 11 publications

Species-specific recognition of the carrier insect by dauer larvae of the nematode Caenorhabditis japonica

Species-specific recognition of the carrier insect by dauer larvae of the nematode Caenorhabditis japonica

Bombus Arısı Hastalık ve Parazitleri

The prevalence of the parasitic nematode Sphaerularia sp. in the overwintering gynes of Parapolybia spp. (Hymenoptera, Polistinae)

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