Results 71 to 80 of about 5,811 (198)

Effects of the invasive Tilapia on the Common Spiny Loach (Cypriniformes: Cobitidae: Lepidocephalichthys thermalis) - implications for conservation

open access: yesJournal of Threatened Taxa, 2017
The introduction of invasive species leading to decline of freshwater fauna is a major concern for conservation biologists.  In this study we examined the effect of introduced Tilapia on the survival of the loach Lepidocephalichthys thermalis via ...
Sandip D. Tapkir   +3 more
doaj   +1 more source

Chemical ecology of egg parasitoids associated with true bugs [PDF]

open access: yes, 2012
Parasitoids representing some 15 families of Hymenoptera develop in insect eggs; three of these families, Platygastridae (= Scelionidae), Mymaridae, and Encyrtidae, are associated with Heteroptera.
COLAZZA, Stefano, Conti, E
core   +2 more sources

Refuge by day, forage by night: Diel activity of vine weevil as characterised by smart monitoring

open access: yesAgricultural and Forest Entomology, EarlyView.
Vine weevil activity was monitored using a Smart trap, which recorded diel refuge‐seeking behaviour. Increasing light intensity triggered refuge seeking behaviour, while lower light intensity induced forage seeking activity. Understanding vine weevil diel activity can enhance early detection, which can improve the effectiveness of integrated pest ...
Ronald Manjoro   +5 more
wiley   +1 more source

Bignoniaceae Metabolites as Semiochemicals

open access: yesMolecules, 2010
Members of the family Bignoniaceae are mostly found in tropical and neo-tropical regions in America, Asia and Africa, although some of them are cultivated in other regions as ornamentals.
Lucía Castillo, Carmen Rossini
doaj   +1 more source

Resource Availability Overrides Predator Presence in Mosquito Oviposition Habitat Selection

open access: yesEntomologia Experimentalis et Applicata, EarlyView.
Gravid Culex quinquefasciatus balance predation risk against resource availability when selecting oviposition sites. In outdoor mesocosms, we factorially manipulated sugarcane jaggery (resource) and notonectid predators (adult vs. nymph; caged vs. free‐swimming) across 2 years.
Arpita Dalal   +5 more
wiley   +1 more source

A male-produced aggregation-sex pheromone of the beetle Arhopalus rusticus (Coleoptera: Cerambycidae, Spondylinae) may be useful in managing this invasive species. [PDF]

open access: yes, 2019
The longhorned beetle Arhopalus rusticus (Coleoptera: Cerambycidae, Spondylinae) is a common species in conifer forests of the Northern Hemisphere, but with global trade, it has invaded and become established in New Zealand, Australia, and South America.
McElfresh, J Steven   +4 more
core   +2 more sources

Anti-aphrodisiac compounds of male butterflies increase the risk of egg parasitoid attack by inducing plant synomone production [PDF]

open access: yes, 2009
During mating in many butterfly species, males transfer spermatophores that contain anti-aphrodisiacs to females that repel conspecific males. For example, males of the large cabbage white, Pieris brassicae (Lepidoptera: Pieridae), transfer the anti ...
Fatouros, N.E.   +7 more
core   +2 more sources

Do aphid endosymbiotic bacteria influence parasitoid searching behaviour through changes in aphid honeydew production?

open access: yesEcological Entomology, EarlyView.
Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda   +5 more
wiley   +1 more source

Diel vertical migration strategies of zooplankton in oligotrophic Russell Pond, New Hampshire [PDF]

open access: yes, 2014
Russell Pond is an ultra-oligotrophic lake with low chlorophyll a (1.9 mg L-1), total phosphorus (3.4 mg L-1), high Secchi Disk (10.4 m) and high light transmission (water coefficient of water, kw=0.33). Vertical migration of Chaoborus, Bosmina, Daphnia,
Dobe, Kelsey Ann
core   +1 more source

Visual Cues Can Alter the Behavioural Responses of Dragonfly Larvae to Chemical Alarm Cues

open access: yesEthology, EarlyView.
Using a controlled experimental approach, we examined how chemical and visual cues influence antipredator behaviour in Aeshna cyanea larvae and tested whether risk‐related information can be socially transmitted among nearby conspecifics. Our results show that dragonfly larvae do not copy the antipredator responses of others, but visual cues alter how ...
Zoltán Tóth   +3 more
wiley   +1 more source

Home - About - Disclaimer - Privacy