Results 101 to 110 of about 27,708 (212)

The development of sexual differences in body size in Odonata in relation to mating systems

open access: yesEuropean Journal of Entomology, 2007
Adult body size is the result of important environmental, maternal and/or genetic effects acting on animals during development. Here we investigate how sexual size dimorphism (SSD) develops in seven species of Odonata: Anax imperator, Cordulegaster ...
Martin-Alejandro SERRANO-MENESES   +3 more
doaj   +1 more source

The impact of climate-induced distributional changes on the validity of biological water quality metrics [PDF]

open access: yes, 2010
We present data on the distributional changes within an order of macroinvertebrates used in biological water quality monitoring. The British Odonata (dragonflies and damselflies) have been shown to be expanding their range northwards and this could ...
Harvey, IF, Hassall, C, Thompson, DJ
core   +1 more source

Bibliographic Guide to the Terrestrial Arthropods of Michigan: Supplement 1 [PDF]

open access: yes, 2017
A list of publications dealing with faunistic studies, range extensions, systematics, and identification of the terrestrial arthropods of Michigan is presented, primarily for the period of 1983-1987. Correlation is also made between earlier entomological
O\u27Brien, Mark F
core   +3 more sources

Odonata

open access: yesRecords of the Zoological Survey of India, 1914
No Abstract.
openaire   +1 more source

Sexual dimorphism, fresh water dispersal range, and prey items of Marine toads (Rhinella marina) in Lennox Head, Australia [PDF]

open access: yes, 2012
The invasive cane or marine toad (Rhinella marina) has spread across much of Australia since its initial introduction in 1935. Naturally found in Central and South America, R.
Strong, Jennifer R.
core   +2 more sources

Immune function and parasite resistance in male and polymorphic female Coenagrion puella [PDF]

open access: yes, 2006
Background: Colour polymorphisms are widespread and one of the prime examples is the colour polymorphism in female coenagrionid damselflies: one female morph resembles the male colour (andromorph) while one, or more, female morphs are described as ...
Joop, G.   +3 more
core   +2 more sources

Fluctuating asymmetry, body size, reproductive period and life time mating success of males of Cercion lindeni (Odonata: Coenagrionidae)

open access: yesEuropean Journal of Entomology, 2005
Mating success is linked to reproductive success in males, but parameters influencing it are poorly known. The relationships between lifetime mating success (LMS), fluctuating asymmetry (FA), body size (SIZE), reproductive period (RP) and emergence date (
Gianmaria CARCHINI   +4 more
doaj   +1 more source

Effect of the spatial heterogeneity on the predation of Scinax fuscovarius and Physalaemus cuvieri tadpoles by Odonata larvae = Efeito da heterogeneidade ambiental na predação de girinos de Scinax fuscovarius e Physalaemus cuvieri por larvas de Odonata

open access: yesActa Scientiarum: Biological Sciences, 2010
The objective of this work were to analyze the effect of predation byOdonata naiads on two amphibian species with distinct habits – benthic and mid-water – and to verify whether the presence and architecture of macrophytes can mediate this interaction ...
João Ânderson Fulan   +1 more
doaj  

Biometry of the large dragonfly Anax imperator (Odonata: Aeshnidae): A study of traits from larval development to adults

open access: yesEuropean Journal of Entomology, 2019
Insect larval development affects adult traits but the biometric relationships are usually poorly understood, including large odonates. In this study, measurements of morphological traits of larvae, exuviae and adults of Anax imperator were recorded ...
Marceau MINOT   +2 more
doaj   +1 more source

Threat to the predator suppresses defence of its prey

open access: yesRoyal Society Open Science
Many studies have shown that prey can optimize their defence mechanisms based on cues indicating predator presence and pressure. However, little is known about whether prey can assess the actual threat by considering both predator density and the ...
Monika Sysiak   +2 more
doaj   +1 more source

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