Results 41 to 50 of about 7,651 (208)

The Effect of Age on Survival Is Similar in Males and Females of an Aquatic Insect Species

open access: yesEcologies
Age is a critical intrinsic factor that influences the probability of survival of organisms on Earth. In many animals, the lifestyles and habitat occupancy of males and females are so different that the effect of age could be sex-dependent.
Abdeldjalil Youcefi   +7 more
doaj   +1 more source

A comparison of complete mitochondrial DNA sequences of Mnais costalis Selys, 1869 (Odonata: Calopterygidae) from three different populations (one allopatric and two sympatric)

open access: yesMitochondrial DNA. Part B. Resources, 2019
In Japan, two closely-related damselflies, Mnais costalis Selys, 1869 (Odonata: Calopterygidae) and M. pruinosa Selys-Longchamps (Odonata: Calopterygidae), 1853, coexist, and they exhibit geographic variations in wing color, body size, and habitat ...
Hisashi Okuyama   +3 more
doaj   +1 more source

Characterization of the nearly complete mitochondrial genome of ochraceous darkies, Euphaea ochracea Selys, 1859 (Odonata: Zygoptera: Euphaeidae) and phylogenetic analysis

open access: yesMitochondrial DNA. Part B. Resources, 2023
In the present study, the nearly complete mitochondrial genome of Euphaea ochracea was described and its phylogenetic position in the family Euphaeidae was analyzed.
Marylin Miga   +7 more
doaj   +1 more source

Allozyme and mitochondrial DNA variability within the New Zealand damselfly genera Xanthocnemis, Austrolestes, and Ischnura (Odonata) [PDF]

open access: yes, 2007
We collected larval damselflies from 17 sites in the North, South and Chatham Islands, and tested the hypotheses that: (1) genetic markers (e.g., allozymes, mtDNA) would successfully ¬discriminate taxa; and (2) the dispersal capabilities of adult ...
Hebert PDN   +8 more
core   +2 more sources

Inconsistent effects of P enrichment and predator presence on food‐web dynamics in a bromeliad system

open access: yesOikos, EarlyView.
Food webs consist of trophic interactions of variable strength. However, it remains challenging to predict how changes in environmental conditions, such as nutrient enrichment, can affect these interactions. In this paper, we propose to integrate food web theory with ecological stoichiometry, which predicts how elemental ratios affect trophic ...
Pierre Rogy   +6 more
wiley   +1 more source

Sequence Analysis of the Cytochrome C Oxidase Subunit I Gene of Pseudagrion pilidorsum (Odonata: Coenagrionidae)

open access: yesMakara Journal of Science, 2017
Pseudagrion pilidorsum is 1 of over 140 species of Pseudagrion (in the family Coenagrionidae), the largest genus of damselfly. This species exhibits dimorphism due to the different body colorations of males and females, making them difficult to ...
Trina Ekawati Tallei   +2 more
doaj   +1 more source

Improving the Accuracy of Species Identification by Combining Deep Learning With Field Occurrence Records

open access: yesFrontiers in Ecology and Evolution, 2021
Citizen science is essential for nationwide ecological surveys of species distribution. While the accuracy of the information collected by beginner participants is not guaranteed, it is important to develop an automated system to assist species ...
Jianqiang Sun   +2 more
doaj   +1 more source

Morph-Specific Fecundity and Egg Size in the Female-Dimorphic Damselfly Ischnura senegalensis [PDF]

open access: yes, 2010
Females of coenagrionid damselflies exhibit color dimorphism, consisting of an andromorph and a gynomorph. This study compared reproductive traits between the female morphs in both field-captured and laboratory-reared females of the female-dimorphic ...
Takahashi Yuma   +3 more
core   +1 more source

Multiple signalling increases both prey response and diversity in a carnivorous pitcher plant

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Organisms across the tree of life use multiple signals such as colour, movement sound, and many types of chemical signals to convey seemingly the same information. These signals are potentially costly, yet the repeated evolution of multiple signalling across systems ...
Sylvie Martin‐Eberhardt   +2 more
wiley   +1 more source

Iflaviruses in arthropods: when small is mighty

open access: yesInsect Science, EarlyView.
Many arthropod species harbor iflaviruses, which often cause covert (asymptomatic) infections, but may still affect host fitness. We review the impact of iflaviruses on arthropod fitness, immunity, behaviour as well as the iflavirus’ host range, transmission, tissue tropism and the interactions with other microorganisms within arthropods.
Annamaria Mattia   +3 more
wiley   +1 more source

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