Influência da temperatura na mortalidade de imaturos de Centris (Heterocentris) analis (Hymenoptera, Apidae, Centridini)

Couto, Ricardo M.; Camillo, Evandro

doi:10.1590/s0073-47212007000100008

Cited by 11 publications

(7 citation statements)

References 17 publications

(19 reference statements)

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“…The mortality rate in C. analis offspring (35%) was moderate similar to that observed in agricultural areas in Brazil (24-25%) (Aguiar & Pina, 2012). Higher mortality rates were found in an urban area in southeastern Brazil, 63% (Jesus & Garófalo, 2000) and 42% (Couto & Camillo, 2007). Offspring mortality may be related to failures in development, environmental factors, such as temperature (Jesus & Garófalo, 2000;Gazola & Garófalo, 2009), changes in air humidity conditions (Buschini & Wolff, 2006), or even to the handling of the nests (Aguiar & Pina, 2012).…”

Section: Discussionmentioning

confidence: 99%

The Cavity-Nesting Bee Guild (Apoidea) in a Neotropical Sandy Coastal Plain

Oliveira-Rebouças

Aguiar²,

Ferreira

et al. 2018

Sociobiology

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Some solitary bees establish their nests in preexisting cavities. Such nesting behavior facilitates the investigation of their life history, as well as the monitoring of their populations in natural, semi-natural and cropped habitats. This study aimed to evaluate the acceptance of artificial substrates by cavity-nesting bees in a heterogeneous landscape. We investigated the percentage of occupation of the different trap-nests, the monthly fluctuations in the nesting activity, offspring sex ratio, mortality and parasitism, in two phytophysiognomies: herbaceous-shrub restinga (site 1) and arboreal restinga (site 2). We used as trap-nests, bamboo canes, large and small straws of cardboard inserted into solid wooden blocks. Five bee species established 193 nests, from which 386 adults emerged. Centris tarsata Smith was the most abundant species. Large straws were signifi cantly more occupied than small straws (χ² = 19.951; df = 1; p < 0.0001). Offspring mortality rate for unknown reasons was signifi cant diff erent between sites, 11% (site 1) and 20% (site 2) (χ² = 4.203; df = 1; p = 0.04). The cavity-nesting bee guild had similar composition in both phytophysiognomies, there was a similar rate of occupation of trap-nests in both sites, as well as dominance of C. tarsata nests. Offspring mortality and parasites attack rates seem to be the more distinctive aspects between the herbaceous shrub and arboreal restinga sampled. Our study indicated that remnant fragments of coastal native habitats may be important nesting sites for the maintenance of bee populations, some of which have been indicated as candidates for management as pollinators of cultivated plants in Brazil.

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Section: Discussionmentioning

confidence: 99%

The Cavity-Nesting Bee Guild (Apoidea) in a Neotropical Sandy Coastal Plain

Oliveira-Rebouças

Aguiar²,

Ferreira

et al. 2018

Sociobiology

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“…The mortality percentage recorded for C. analis offspring due to unknown causes suggests that there are not considerable losses of such offspring in these sites, similar to previous observation in DMQ and in nesting areas close to it (Aguiar & Pina, 2012;Aguiar et al, 2013). On the other hand, Jesus and Garófalo (2000), Gazola and Garófalo (2003), as well as Couto and Camillo (2007) reported great brood cell losses for this species in an urban area. Factors causing the death of immature tropical solitary bees, who nest in trap-nests, remain poorly investigated.…”

Section: Discussionmentioning

confidence: 87%

Cavity Length Affects the Occupation of Trap-Nests by Centris analis and Tetrapedia diversipes (Hymenoptera: Apidae)

2020

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The ideal cavity dimensions for neotropical cavity-nesting bees with the potential to be managed as pollinators have not been getting proper attention. We investigated whether the occupancy of trap-nests by Centris analis Fabricius and Tetrapedia diversipes Klug, and other nesting aspects, are affected by different trap-nest length. The used trap-nests were cardboard tubes 5, 10, 15 and 20 cm in length, and Ø 8 mm. Occupation rates of 10-cm trap-nests by C. analis was higher than that of the 5-cm ones (χ2=11.17, gl=1, p<0.001). On the other hand, there was not difference between the occupation rates of 10 and 15-cm long trap-nests (χ2=0.51, gl=1, p=0.48), and between the ones measuring 15 and 20 cm long (χ2=1.36, gl=1, p=0.24). T. diversipes occupied a smaller number of 5-cm trap-nests than the 10-cm ones (χ2=1.52, gl=1, p=0.22), as well as that the 15-cm ones were more occupied than the 10-cm trap-nests (χ2=4.23, gl=1, p=0.04); moreover, there was not difference between the occupation of 15 and 20-cm trap-nests (χ2=0.28, gl=1, p=0.59). Both species showed higher rates of dead immatures in nests set in the shortest trap-nests, whereas these mortality rates were lower in the longest ones. By taking into consideration that there was not significant difference in many of the assessed parameters in comparison to values recorded for 15 and 20-cm long trap-nests, it seems likely to recommend the adoption of 10-cm long trap-nests for C. analis reproduction in agricultural sites that depend on the pollination service provided by this bees species.

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“…The mortality rates attributed to unknown causes (Couto & Camillo, 2007) and fungal proliferation (Camarottide-Lima & Martins, 2005) have been diagnosed as the main causes of mortality of immature individuals of various bee species nesting in trap-nests.…”

Section: Discussionmentioning

confidence: 99%

Occupation and Emergence of Solitary Bees in Different Types of Trap Nests

Brasil

Filho

et al. 2019

Sociobiology

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The study investigated the occupation and emergence of bees that nest in trap-nests and assessed aspects of the structure of such nests, sex ratio, parasitism and mortality of bees in four areas of Baturité Massif, State of Ceará. Samples were taken using three types of trap-nests: dried bamboo internodes, cardboard tubes and rational boxes. In the four studied sites, a total of 185 artificial nests were offered monthly and 34 of them were occupied by bees. Six species of bees, distributed in five genera (Centris, Mesocheira, Euglossa, Megachile and Coelioxys) occupied the 34 trap-nests, but of this total nests, 24 presented emergence of individuals. In the rest of the nests there was mortality of the occupants. Considering the total of nests with emergence, it was obtained 139 individuals: 131 bees (28 kleptoparasite bees) and 8 coleopterans. In 34 bee nests obtained, there were constructed 162 brood cells, the number of cells per trap-nest varied from 1 to 13 brood cells and the length of these nests varied from 2.4 to 14cm. Thirteen nests were parasitized by hymenopterans (Apidae and Megachilidae) and coleopterans (Meloidae), resulting in a parasitism rate of 38.2% of the total of nests founded. In addition, mortality occurred from unknown causes in 29.4% (n=10) of individuals before reaching adult stage. This work identified the bee species that use pre-existing cavities in the Baturite Massif, determined their nesting requirements and constrains for their reproduction. This information may contribute to conservation efforts of these bee species as well as their potential use for pollination services.

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Influência da temperatura na mortalidade de imaturos de Centris (Heterocentris) analis (Hymenoptera, Apidae, Centridini)

Cited by 11 publications

References 17 publications

The Cavity-Nesting Bee Guild (Apoidea) in a Neotropical Sandy Coastal Plain

The Cavity-Nesting Bee Guild (Apoidea) in a Neotropical Sandy Coastal Plain

Cavity Length Affects the Occupation of Trap-Nests by Centris analis and Tetrapedia diversipes (Hymenoptera: Apidae)

Occupation and Emergence of Solitary Bees in Different Types of Trap Nests

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