Results 41 to 50 of about 3,578 (189)

A new wing skeleton of Forfexopterus (Pterosauria: Ctenochasmatidae) from the Early Cretaceous Jehol Biota reveals a developmental variation [PDF]

Fossil Record, 2020
In the Jehol Biota, the filter-feeding ctenochasmatid pterosaurs flourished with a high biodiversity. Here, we report a new wing skeleton of the ctenochasmatid Forfexopterus from the Early Cretaceous Jiufotang Formation in Jianchang, western Liaoning ...
C.-F. Zhou, J. Wang, Z. Zhu
doaj   +1 more source

A detailed redescription of a skeletally immature ‘Redondasaurus’ suggests ontogenetic transformations in the taxon mirror phytosaurian morphological evolution

The Anatomical Record, EarlyView.
Abstract The study of morphological evolution is fundamentally tied to ontogeny, yet studies of these heterochronic processes in the fossil record are rare. Fossils belonging to an ontogenetic series are difficult to assign to an ontogenetic stage due to inconsistent proxies for skeletal ages, challenging to taxonomically assign due to morphological ...
Erika R. Goldsmith, Michelle R. Stocker
wiley   +1 more source

Global distribution of avian plumage coloration and patterning: the relative influence of climate, ecology, and sexual selection

Ecography, EarlyView.
Animal coloration exhibits substantial biogeographic variation, reflecting complex adaptations to both abiotic and biotic environments. Although the evolutionary mechanisms underlying avian plumage coloration have been widely studied, geographic variation in plumage patterning has received far less attention.
Yuqing Han, Ying Zeng, Tien Ming Lee, Long Wang, Chen Zeng, Pengfei Fan, Çağan H. Şekercioğlu, Weini Huang, Yang Liu   +8 more
wiley   +1 more source

Canscora agni (Gentianaceae), a new species from the fire‐prone Indian savannas

Nordic Journal of Botany, EarlyView.
We describe Canscora agni from the Indian savannas as a distinct species which differs from its allied species Canscora alata in having fewer and shorter leaves, pedicel‐wings unequal across the length, bracts with glandular hair on the margins, calyx‐wings being four, wider, up to 2.3 mm, with distinct reticulate venation and having ovary length up to
Ashish N. Nerlekar, Sharad Suresh Kambale   +1 more
wiley   +1 more source

A sexual dimorphism in the spatial vision of band-winged grasshoppers [PDF]

, 2020
Abstract Visual acuity (VA) --- a measurement of the fineness or coarseness of vision --- correlates with the size of an animal, with larger species often possessing sharper vision. However, it is unknown whether the same relationship between visual acuity and size holds within a species when individuals differ ...
Alex B. Duncan, Brae A. Salazar, Sara R. Garcia, Nicholas C. Brandley   +3 more
openaire   +1 more source

SYN‐A, a naturally derived synergist, restores pyrethroid efficacy against cabbage stem flea beetle but negatively impacts its parasitoid Microctonus brassicae

Pest Management Science, EarlyView.
SYN‐A, a naturally derived synergist, inhibited key metabolic pathways associated with pyrethroid insecticide resistance in cabbage stem flea beetle (CSFB) and its parasitoid Microctonus brassicae. SYN‐A restored pyrethroid efficacy against resistant CSFB allowing up to 80% reduction in application rates.
Patricia A. Ortega‐Ramos, Graham D. Moores, Samantha M. Cook   +2 more
wiley   +1 more source

A plant virus-derived siRNA modulates wing dimorphism and fertility of vector insects to enhance virus spread

Journal of Advanced Research
Introduction: The infection of plant viruses alters the wing dimorphism and reproductive development of vector insects, thereby enhancing viral dissemination.
Yiming Wang, Qiao Gao, Lian Shan, Wenyi Cao, Yuanxun Li, Wenbing Ding, Hongshuai Gao, Jin Xue, Hualiang He, Lin Qiu, Youzhi Li   +10 more
doaj   +1 more source

Andromorphic female of the dragonfly Neurothemis tullia tullia (Drury) (Odonata: Libellulidae), central India

Journal of Threatened Taxa, 2013
Neurothemis tullia tullia (Drury) is a common dragonfly which occurs in large colonies in swamps and heavily- weeded tanks in different parts of India. It exhibits striking sexual dimorphism in colour and wing spot patterns. The male is dark with a large
R.J. Andrew
doaj   +1 more source

The evolution of shape in the wing dimorphic cricket, Allonemobius socius [PDF]

Heredity, 1998
Many traits which show only two phenotypic morphs are polygenically determined. For such traits the threshold model of quantitative genetics provides a suitable theoretical basis for the estimation of genetic parameters and response to selection. A consequence of this model is that traits correlated to the threshold trait are predicted to change, both ...
Derek A Roff, Michael J Bradford
openaire   +1 more source

Agricultural Fungicide Mancozeb in Leaf Litter Enhances Survival and Growth of Aedes aegypti (Diptera: Culicidae)

Environmental Toxicology, EarlyView.
ABSTRACT Mancozeb is one of the most widely used agricultural fungicides, exhibiting strong efficacy against a broad spectrum of phytopathogenic fungi. However, its widespread application comes at the cost of environmental contamination. Here, we show the effects of Inga vera leaf litter contamination with Mancozeb on life‐history traits of Aedes ...
Heloise Restello Remus, Gilberto Dinis Cozzer, João Tauchert, Raquel de Brito, Cássia Alves Lima‐Rezende, Jacir Dal Magro, Natalia Bastiani da Luz, Daniel Albeny‐Simões, Renan de Souza Rezende   +8 more
wiley   +1 more source