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1. Different paths to sexual size dimorphism in two praying mantids, Pseudomantis albofimbriata and Hierodula majuscula

Author:
Allen, Louise E.; Barry, Katherine L.; Holwell, Gregory I.
Source:
Insect science 2014 v.21 no.2 pp. 227-233
ISSN:
1672-9609
Subject:
Mantodea; adulthood; adults; dimorphism; females; instars; males; molting; reproduction; tropics
Abstract:
... Sexual size dimorphism (SSD) is widespread among diverse animal taxa and has attracted the attention of evolutionary biologists for over a century. SSD is likely to be adaptive and the result of divergent selection on different size optima for males and females, given their different roles in reproduction. The developmental trajectory leading to SSD may help us to understand how selection acts on ...
DOI:
10.1111/1744-7917.12016
PubMed:
23956112

2. Drosophila melanogaster as a model system of aluminum toxicity and aging

Author:
Kijak, Ewelina; Rosato, Ezio; Knapczyk, Katarzyna; Pyza, Elżbieta
Source:
Insect science 2014 v.21 no.2 pp. 189-202
ISSN:
1672-9609
Subject:
Drosophila melanogaster; aluminum; circadian rhythm; exposure duration; fruit flies; larval development; locomotion; longevity; males; toxicity
Abstract:
... The aim of this study was to investigate the toxic effects of aluminum (Al) on the model organism–Drosophila melanogaster. The study is especially concerned with the effects of aluminum on the fruit fly's development, life span, and circadian rhythm in rest and activity. Flies were exposed to aluminum in concentrations from 40 to 280 mg/kg in rearing media or the flies were raised on control mediu ...
DOI:
10.1111/1744-7917.12017
PubMed:
23956142

3. Humidity and seasonality drives body size patterns in males of the bush cricket Isophya rizeensis Sevgili, 2003 (Orthoptera: Tettigoniidae: Phaneropterinae)

Author:
Çağlar, Selim S.; Karacaoğlu, Çağaşan; Kuyucu, A. Cem; Sağlam, İsmail K.
Source:
Insect science 2014 v.21 no.2 pp. 213-226
ISSN:
1672-9609
Subject:
Gryllidae; Tettigoniidae; altitude; body size; color; geographical variation; humidity; latitude; males; morphs; nutritional adequacy; primary productivity; stress tolerance; temperature
Abstract:
... Two primary patterns of body size variation have been recorded in ectotherms in relation to latitudinal/altitudinal shifts. In some, body size increases with increasing latitude/altitude whereas, in others, body size decreases with increasing latitude/altitude. This clinal variation is generally assumed to be caused by local adaptation to environmental conditions however the selective variable(s) ...
DOI:
10.1111/1744-7917.12027
PubMed:
23956203