Results 121 to 130 of about 157,431 (344)

The influence of the fasting period on the number of nymphal instars and on the sex ratio of Argas (Persicargas) miniatus (Acari: Argasidae) Influência do período de jejum no número de instares ninfais e na razão sexual de Argas (Persicargas) miniatus (Acari: Argasidae)

open access: yesRevista Brasileira de Parasitologia Veterinária, 2010
The current study investigated the biology of nymphs of the first and second instars of Argas (Persicargas) miniatus. Nymphs were deprived of food for 15, 30 or 60 days and held at 27 ± 1 ºC and 80 ± 10% relative humidity (controlled conditions) or at ...
Huarrisson Azevedo Santos   +8 more
doaj   +1 more source

Side effects of pesticides used in organic and conventional tomato crops on Dolichogenidea gelechiidivoris, a parasitoid of Tuta absoluta

open access: yesPest Management Science, EarlyView.
This study reveals strong variability in the effects of eight tomato integrated pest management‐compatible pesticides on Dolichogenidea gelechiidivoris, identifying harmful compounds such as spinosad and more selective ones such as sulfur and spiromesifen, depending on the exposure route.
Pablo Urbaneja‐Bernat   +3 more
wiley   +1 more source

Why are our roe deer short of breath? – prevalence and promotive factors of lung parasites in roe deer Capreolus capreolus in south‐eastern Germany

open access: yesWildlife Biology, EarlyView.
The existence of bronchopulmonary nematodes in German roe deer Capreolus capreolus is well documented, with two types of lung parasites that have been described previously: Dictyocaulus capreolus and Varestrongylus capreoli. However, little is known about the impact of these parasites on their host animal or which parameters influence outbreak and ...
Tobias Wild   +7 more
wiley   +1 more source

The First Instar of Wohlfahrtia vigil Walker

open access: yesThe Journal of Parasitology, 1921
On July 9, 1907, in Ithaca, N. Y., the writer captured a female specimen, which when placed in the cyanide bottle, immediately deposited several larvae on the side of the glass. The species is therefore larviparous, like other Sarcophagids. As the adult of this species has several striking characteristics, it was possible, even at that date, and before
openaire   +3 more sources

The evolution of sensitive periods beyond early ontogeny: Bridging theory and data

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Sensitive periods, in which experiences have a large impact on phenotypic development, are most common early in ontogeny. Yet, they may also occur at later ontogenetic stages, such as adolescence.
Nicole Walasek   +2 more
wiley   +1 more source

Jumping plant-lice of the Paurocephalinae (Insecta, Hemiptera, Psylloidea): systematics and phylogeny [PDF]

open access: yes, 2003
Much confusion exists with respect to the content and definition of the psyUid subfamily Paurocephalinae. Based on a cladistic analysis of 22 morphological characters (16 adult and 6 larval), the subfamily is redefined to comprise the following five ...
Burckhardt, Daniel, Mifsud, David
core  

Climate‐induced upslope shift of orthopteran herbivores imposes greater herbivory through trait complementarity

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The asynchronous upward shift of insect herbivores and plants towards higher elevations following climate warming is anticipated to generate novel plant–insect interactions.
Baptiste Bovay   +4 more
wiley   +1 more source

Crossing thermal boundaries: Quantifying the impact of sublethal heat stress on growth in black soldier fly (Hermetia illucens)

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Ectothermic responses to permissive temperatures that support growth, maintenance and repair are typically modelled by thermal performance curves (TPC). In contrast, thermal death time (TDT) models are well suited to describe the potent, exponential accumulation of ...
Mattias Schow‐Madsen   +3 more
wiley   +1 more source

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