Evolution of Microgeographic Races Without Isolation in a Coastal Dune Beetle

Doyen, John T.; Slobodchikoff, C. N.

doi:10.2307/2844772

Cited by 15 publications

(3 citation statements)

References 21 publications

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“…They tend to have a flattened body and short legs, meaning they are well adapted to burrowing in sand. Body size is an important feature for adaptation to microclimate and substrate factors ( Thomas 1983 ; Doyen and Slobodchikoff 1984 ). Certain structural and physiological regulations developed by the desert beetles also play an important role in desert adaptation.…”

Section: Introductionmentioning

confidence: 99%

The Rearing and Biology of the Desert Beetle,Microdera punctipennis, Under Laboratory Conditions

Wang

Liu

Zhao

et al. 2011

Journal of Insect Science

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Microdera punctipennis Kasz (Coleoptera: Tenebrionidae) is a unique species that lives in the desert region of Central Asia and has adopted a nocturnal habit to survive the desert environment. Female adults are larger in size than male adults. The female/male ratio was 1.04:1. A rearing method using reused plastic bottles was used. The rearing conditions were 30 ± 0.5°C, 30 ± 6% relative humidity (RH), and 16:8 L:D photoperiod. Cabbage was provided as food. Cannibalism was avoided by rearing one larva in a bottle. A complete life cycle was obtained under these conditions. The viability of eggs, larvae, prepupae, pupae, and teneral adults was 93.54%, 83.71%, 84.76%, 87.64%, and 93.59%, respectively. Embryogenesis took 7.35 days on average. The larval duration in each instar was 2.25 days. The mean duration of the larvae, prepupae, pupae, and teneral adult was 49.27, 7.05, 9.95, and 10.12 days, respectively. The coloration of each developmental stage gradually changed from creamy white to light brownish or black. Females commenced oviposition when their body color became black. On average, each female produced 568 eggs.

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Section: Introductionmentioning

confidence: 99%

The Rearing and Biology of the Desert Beetle,Microdera punctipennis, Under Laboratory Conditions

Wang

Liu

Zhao

et al. 2011

Journal of Insect Science

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“…It is expected that darkling beetle populations would show particular altitudinal distributions in terms of their physiological optima (thermal and hydric) and tolerance limits, but the vertical movements in the burrow will provide a wide choice of microenvironments (Hadley, 1970;Robinson & Seely, 1980). Species distributed among different soil textural classes, were markedly more abundant on one soil type (Quezel, 1950;Marcuzzi, 1964;Rickard & Haverfield, 1965;Calkins & Kirk, 1973Doyen & Tshinkel, 1974;Coineau et al, 1982;Thomas, 1983;Sheldon & Rogers, 1984;Doyen & Slobodchikoff, 1984;Krasnov & Shenbrot, 1996).…”

Section: Introductionmentioning

confidence: 99%

Habitat selection and assemblage structure of darkling beetles (Col. Tenebrionidae) along environmental gradients on the island of Tenerife (Canary Islands)

Santos

Nicolás

Ferrer

2002

Journal of Arid Environments

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Relationships between biocoenotic variation trends in the darkling beetle assemblage and several environmental variables of sampling plots at different elevations were investigated at different spatial scales. Classification (UPGMA) and ordination (PCA, CCA) techniques were used to examine these data. Two large groups of species (coastal and mountane) were established, although two clear subgroups (sub-summit and summit) were found in the latter. Likewise, the sub-summit subgroup was divided into a 'lower-montane' and 'middle-montane'. At large scale, several grouping trends showing significant relationships to some climatic factors were observed, principally the height of dew point temperature and the trade wind inversion zones during summer (1200 m a.s.l.) or winter (1600 m a.s.l.). The major trend was conditioned firstly by temperature and secondly by sand content on the soil (xeric habitats). The second trend was influenced by rainfall (moist habitats) and vegetation type. The third trend was opposite to the previous trends. At a fine scale (altitudinal band or stratum), vegetation parameters and edaphic variables were also significant factors (open-closed or sandy-clay microhabitats) as concerns the distribution and abundance of these detritivorous beetles. The observations at different scales reflected different conclusions in the definition of darkling beetle associations and the environmental factors.

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“…Similarly, such studies emphasize the structural modifications of bodydesign form as adaptations to the micro-environmental mosaic of the desert lands they inhabit. Some morphological characters, such as the length and form of the legs (Medvedev, 1965;Broza et al, 1983), the elytra (Cloudsley- Thompson, 1964;Draney, 1993), and the body size of tenebrionid species ecotypes (Coineau et al, 1982;Thomas, 1983;Doyen & Slobodchikoff, 1984) have been interpreted as adaptation to microclimate and edaphic factors.…”

Section: Introductionmentioning

confidence: 99%

Adaptive trends of darkling beetles (Col. Tenebrionidae) on environmental gradients on the island of Tenerife (Canary Islands)

Santos

Gómez-González

Alonso

et al. 2000

Journal of Arid Environments

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Evolution of Microgeographic Races Without Isolation in a Coastal Dune Beetle

Cited by 15 publications

References 21 publications

The Rearing and Biology of the Desert Beetle,Microdera punctipennis, Under Laboratory Conditions

The Rearing and Biology of the Desert Beetle,Microdera punctipennis, Under Laboratory Conditions

Habitat selection and assemblage structure of darkling beetles (Col. Tenebrionidae) along environmental gradients on the island of Tenerife (Canary Islands)

Adaptive trends of darkling beetles (Col. Tenebrionidae) on environmental gradients on the island of Tenerife (Canary Islands)

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