Proboscis Length and Resource Utilization in Two Uruguayan Bumblebees: Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae)

Arbulo, Natalia; Santos, Estela; Salvarrey, Sheena; Invernizzi, Ciro

doi:10.1590/s1519-566x2011000100010

Cited by 18 publications

(15 citation statements)

References 17 publications

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“…In some cases, plant species phenological advances may not cause significant problems to the insect that are dependent on them (Bartomeus et al 2011). However, the role of plant species phenological changes on the future distribution of B. bellicosus may be of a smaller importance, as it is a generalist species (Arbulo et al 2011) which visits more than 60 different plant species (Martins and Melo 2009). Consequently, eventual phenological changes of South American plant species undergoing climate change, as already reported elsewhere (Root et al 2003;Parmesan 2006), will probably not affect the persistence of B. bellicosus in the considered area.…”

Section: Discussionmentioning

confidence: 86%

Species conservation under future climate change: the case of Bombus bellicosus, a potentially threatened South American bumblebee species

et al. 2014

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Bees ensure 35 % of global food production, but this service is endangered due to several threats. Declines in bumblebee populations (genus Bombus) have been reported worldwide. Bombus bellicosus is one of the rare cases of reported threatened bumblebees in South America. It was once widespread in southern Brazil's grasslands until the 1960s. During that time, that area underwent increasing land use which led to a decrease in bee abundance and richness, and to local disappearance of B. bellicosus. Climate change is also believed to cause declines in the abundance of B. bellicosus. Here we used species distribution models to assess potential effects of climate changes on the distribution of B. bellicosus in southern Brazil, considering both current and future climate scenarios. Our results show that the suitable climatic conditions for B. bellicosus will retreat southwards. A wax cover inside its nests is usually related to Bombus species inhabiting cooler climates. This cover enables the maintenance of higher temperatures inside the nest and may be deleterious for the species under future warmer climates. Continuously growing land use is the second major threat to this pollinator. The results presented here may eventually provide theoretical grounds and enable practical conservation actions for B. bellicosus protection in South America, especially given the potential adverse effects of climate changes for this species.

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Section: Discussionmentioning

confidence: 86%

Species conservation under future climate change: the case of Bombus bellicosus, a potentially threatened South American bumblebee species

et al. 2014

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“…This is consistent with the report of Marghitas et al (2008), which showed that proboscis length is a very important characteristic for indicating geographical variability. Proboscis length variations have also been shown to be related to the environmental resources in Huangshan (Souza et al, 2002), and proboscis length is known to influence the choice of nectar resources in bumblebees (Arbulo et al, 2011). Moreover, the morphometric characteristics associated with forewing size were significantly negatively correlated to altitude.…”

Section: Discussionmentioning

confidence: 98%

Morphmetric analysis of apis cerana populations in Huangshan, China

Yu¹,

Liu²,

Huang³

et al. 2013

Journal of Apicultural Science

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A b s t r a c t Honey bees (Apis cerana Fabricius) were collected from 195 colonies at seven different localities spanning the main beekeeping areas in Huangshan. Morphometric methods were used to measure seven standard morphometric characters, and these bees were compared to samples from the Henan, Shandong, and Yunnan provinces. Principal component analysis of the total Huangshan database yielded two clusters: bees from Jinxian and Jixixian, and those from other localities. Within the latter cluster, discriminant and hierarchical cluster analyses revealed overlapping regional sub-clusters: bees from Huangshanqu, Qimenxian, Huizhouqu, and Shexian, and those from Yixian. Significant differences between the means of the three clusters were demonstrated using Wilks' lambda statistic. Morphocluster separation was related to altitude differences. Moreover, we noted some regions with high intercolonial variance, suggesting introgression among these defined honeybee populations.

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“…Both are relatively common in southern South America and abundant in the Pampas region. Since much of this region has become a heavily used agro-ecosystem, these insects provide essential pollination services not only for relict natural vegetation but also for a variety of crops (Arbulo et al 2011). Despite their central relevance in such an important process and although pathogens and parasites have been signaled as a relevant mortality factor (Kissinger et al 2011 and references therein), the current health status of bumble bees in Uruguay is still poorly known being the microsporidium Nosema ceranae Fries et al the only pathogen reported in the country associated with these insects (Arbulo et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Pathogens, parasites, and parasitoids associated with bumble bees (Bombus spp.) from Uruguay

et al. 2016

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As elsewhere in the world, bumble bees play a vital role as pollinators in Uruguay, but knowledge on their health status is still limited. Between September 2012 and May 2013, 403 adult individuals of the two species of Bombus known for the country (Bombus atratus , Bombus bellicosus) were collected in six localities. We found that 177 (119 B. atratus , 58 B. bellicosus) were harboring one or two types of pathogens, parasites, or parasitoids. Identification of these natural enemies carried out by morphological or molecular procedures revealed the presence of two species of Microsporidia [Nosema ceranae (prevalence: 18.2 % in B. atratus ; 44.9 % in B. bellicosus), Tubulinosema pampeana (prevalence: 13 % in B. atratus)], two species of Nematoda [Sphaerularia bombi (prevalence: 40.4 % in B. atratus ; 40 % in B. bellicosus) and an unidentified Mermithidae (prevalence: 0.8 % in B. bellicosus)], and one species of Diptera parasitoid (prevalence: 3.2 % in B. atratus ; 4.2 % in B. bellicosus). Except N. ceranae , none of the other species have been previously reported in Uruguay.

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Proboscis Length and Resource Utilization in Two Uruguayan Bumblebees: Bombus atratus Franklin and Bombus bellicosus Smith (Hymenoptera: Apidae)

Cited by 18 publications

References 17 publications

Species conservation under future climate change: the case of Bombus bellicosus, a potentially threatened South American bumblebee species

Species conservation under future climate change: the case of Bombus bellicosus, a potentially threatened South American bumblebee species

Morphmetric analysis of apis cerana populations in Huangshan, China

Pathogens, parasites, and parasitoids associated with bumble bees (Bombus spp.) from Uruguay

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