Spatio-Temporal Distribution of Larval and Adult Tiger Beetles (Coleoptera: Cicindelidae) from Open Areas in Central Amazonian Floodplains (Brazil)

Zerm, Matthias; Adis, Joachim

doi:10.1076/snfe.36.3.185.2123

Cited by 20 publications

(22 citation statements)

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“…Similarly to the results by Zerm and Adis (2001), who studied beetles in floodplains in the Amazon, our results showed a positive relationship between species richness and heterogeneity. Structural heterogeneity, in this study estimated as the dissimilarity in distance of trees, could have determined ant species richness due to an increase of different micro-habitats, created by these dissimilarities in tree distances.…”

Section: Processes Determining Biodiversitysupporting

confidence: 85%

Ant communities, environmental characteristics and their implications for conservation in the Brazilian Pantanal

Ribas

Schoereder

2006

Biodivers Conserv

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Studies about processes determining biodiversity in Pantanal are urgently needed and the use of invertebrates for this purpose may be an efficient tool. The purpose of this paper is to verify whether ants could be used to predict human impacts on Pantanal, assessing how environmental characteristics of gallery forest influence arboreal ant species richness. Specifically, we tested the hypotheses that: (i) resource availability (estimated by tree density) and (ii) diversity of environmental conditions (estimated by structural heterogeneity) positively influence arboreal ant species richness and composition. Ants were sampled in a gallery forest in the Miranda River. Ant species richness did not respond to tree density, but increased with structural heterogeneity. Species composition was affected both by tree density and structural heterogeneity. The species list produced in the present study showed a high similarity between arboreal ant faunas of Cerrado and Pantanal, which are contiguous biomes. The relationship of ant species richness with heterogeneity, as well as the observed changes of species composition with tree density and heterogeneity may be explained by the presence of a variation of environmental conditions, which create several micro-habitats in the forest. The response of the ant community can reflect human impacts on the forests of the studied region, which are usually modified to create patches for sport fishing and by pathways used in ecotourism.

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Section: Processes Determining Biodiversitysupporting

confidence: 85%

Ant communities, environmental characteristics and their implications for conservation in the Brazilian Pantanal

Ribas

Schoereder

2006

Biodivers Conserv

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“…In a second approach, anoxia resistance was tested in third‐instar larvae submerged within sediment for 40 days before anoxia exposure. These larvae had gradually been submerged from the bottom within approximately 1 week in the laboratory, allowing the larvae either to escape to the top (discarded) or to adapt to the flooding conditions and to enter dormancy (Zerm & Adis, 2001). Larvae were recovered from the flooded sediment by rinsing with water, dried with tissue paper, and placed into the test vials.…”

Section: Methodsmentioning

confidence: 99%

“…temperature of the river water). Survival experiments in the laboratory reveal that active larvae only survive a few days of submersion, larvae that spontaneously enter a state of dormancy survive up to 2 weeks, whereas maximum survival in larvae gradually flooded within sediment was >3 months (Zerm & Adis, 2000, 2001). Because flooded soils quickly become anoxic (Baumgärtl et al ., 1994), even more so in Central Amazonia due to the low oxygen content in river water above inundated floodplain soils (Adis & Messner, 1991), larvae surviving the inundation period in the soil should be highly resistant to anoxia.…”

Section: Introductionmentioning

confidence: 99%

Exceptional anoxia resistance in larval tiger beetle, Phaeoxantha klugii (Coleoptera: Cicindelidae)

Zerm

Adis

2003

Physiological Entomology

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The tiger beetle Phaeoxantha klugii inhabits Central Amazonian floodplains, where it survives the annual inundation period in the third-instar larval stage submerged in the soil at approximately 29 C for up to 3.5 months. Because flooded soils quickly become anoxic, these larvae should be highly resistant to anoxia. The survival of adult and larval P. klugii was therefore tested during exposure to a pure nitrogen atmosphere in the laboratory at 29 C. Adult beetles were not resistant (< 6 h). Survival of larvae decreased over time, maximum survival was 15 days, whereas time to 50% mortality was 5.7 days (95% confidence interval 3.8-7.9). Anoxia resistance was additionally tested in third-instar larvae submerged within sediment for 40 days before anoxia exposure in the laboratory. Anoxia resistance was greatly enhanced in these larvae, showing a survival rate of 50% after 26 days of anoxia exposure. It appears that the gradual flooding process and/or the submersion phase induced a physiological alteration, most probably a strong depression in metabolic rate, which requires some days for induction. The degree of anoxia resistance in larval P. klugii is remarkable among terrestrial arthropods worldwide, even more so considering the high ambient temperatures. The species is well-suited to serve as a model organism for studying the physiological mechanisms of anoxia and submersion resistance in terrestrial arthropods inhabiting tropical floodplains.

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“…Caudal spines on the elytral apex were disregarded. Based on the references of Acciavatti & Pearson (1989), McCairns et al (1997) and Zerm & Adis (2001), body length of beetles were categorized as follows: less than 8mm -very small, 8-10 mm -small, 10-15 mm -medium, 15-20 mmlarge, more than 20mm -very large.…”

Section: Measurement Of Body Weight and Body Lengthmentioning

confidence: 99%

Distribution and habitat preferences of tiger beetles (Coleoptera: Cicindelidae) of the riverine ecosystems of Sri Lanka

Dangalle¹,

Pallewatta²,

Vogler³

2014

J. Threat. Taxa

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Spatio-Temporal Distribution of Larval and Adult Tiger Beetles (Coleoptera: Cicindelidae) from Open Areas in Central Amazonian Floodplains (Brazil)

Cited by 20 publications

References 0 publications

Ant communities, environmental characteristics and their implications for conservation in the Brazilian Pantanal

Ant communities, environmental characteristics and their implications for conservation in the Brazilian Pantanal

Exceptional anoxia resistance in larval tiger beetle, Phaeoxantha klugii (Coleoptera: Cicindelidae)

Distribution and habitat preferences of tiger beetles (Coleoptera: Cicindelidae) of the riverine ecosystems of Sri Lanka

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