Results 11 to 20 of about 106,182 (52)

Unbalanced sex ratio and triploidy in the genus Cyclocephala (Coleoptera: Scarabaeoidea: Dynastidae) in the Lesser Antilles: An example of parthenogenesis on islands?

European Journal of Entomology, 2014
Sex ratio and chromosomes studies were performed on six of the seven species of genus Cyclocephala present in the Lesser Antilles. Most sex ratios based on light trapping are skewed, with a frequent, but not exclusive, strong excess of females.
Bernard DUTRILLAUX, Dominique PLUOT-SIGWALT, Anne-Marie DUTRILLAUX   +2 more
doaj   +1 more source

Preference and performance of the larvae of Lymantria dispar (Lepidoptera: Lymantriidae) on three species of European oaks

European Journal of Entomology, 2014
The gypsy moth, Lymantria dispar (L.) (Lepidoptera: Lymantriidae), causes enormous damage to broadleaved forests in the northern hemisphere where it frequently defoliates large areas of forest.
Slobodan MILANOVIĆ, Jelica LAZAREVIĆ, Zorica POPOVIĆ, Zoran MILETIĆ, Miroslav KOSTIĆ, Zlatan RADULOVIĆ, Dragan KARADŽIĆ, Ana VULETA   +7 more
doaj   +1 more source

Recorded and potential distributions on the iberian peninsula of speciesof Lepidoptera listed in the Habitats Directive

European Journal of Entomology, 2014
. Using data on the known Iberian distributions of 10 species of Lepidoptera listed in the Habitats Directive referenced to the 10 × 10 km UTM grid, we determined their potential distributions and their relationships with selected bioclimatic factors ...
Helena ROMO, Edgar CAMERO-R., Enrique GARCÍA-BARROS, Miguel L. MUNGUIRA, José MARTÍN CANO   +4 more
doaj   +1 more source

Effects of larval diapause and the juvenile hormone analog, fenoxycarb, on testis development and spermatogenesis in the wax moth, Galleria mellonella (Lepidoptera: Pyralidae)

European Journal of Entomology, 2018
Facultative diapause in the wax moth, Galleria mellonella, occurs in the final larval instar. Application of juvenile hormone analogs (JHAs) to the larvae of this species has similar effects to diapause, in terms of prolonged development of the larval ...
Piotr BEBAS, Bronislaw CYMBOROWSKI, Michalina KAZEK, Marta Anna POLANSKA   +3 more
doaj   +1 more source

Classification of Captive North American River Otters (Lontra canadensis) Vocal Repertoires: Individual Variations, and Age Class Comparisons [PDF]

Animal Behavior and Cognition, 2014
This is the first study to examine in detail the vocal behaviors of North American river otters (Lontra canadensis), and the results suggest that river otters have complex vocal repertoires comprised of four distinct vocal types and seven sub-call types.
Carla Almonte
doaj   +1 more source

Loss of Y chromosome may be a synapomorphy of the tribe Lepturini (Coleoptera: Cerambycidae: Lepturinae)

European Journal of Entomology, 2018
Phylogeny and higher classification of the cerambycid subfamily Lepturinae remain controversial. Here we report the results of a cytogenetic study of 18 species currently classified in Lepturini and 12 species in other tribes of Lepturinae (1 in ...
Anne-Marie DUTRILLAUX, Bernard DUTRILLAUX   +1 more
doaj   +1 more source

Factors determining local and seasonal variation in abundance of Harmonia axyridis (Coleoptera: Coccinellidae) in Central Europe

European Journal of Entomology, 2019
To determine the causes of the variation in the seasonal dynamics of Harmonia axyridis (Pallas) in Central Europe, numbers of adults and larvae of this invasive species were recorded on trees (Acer, Betula, Tilia) throughout the growing seasons from 2011
Alois HONĚK, Marek BRABEC, Zdenka MARTINKOVÁ, Anthony F.G. DIXON, Stano PEKÁR, Jiří SKUHROVEC   +5 more
doaj   +1 more source

Susceptibility of Chironomus plumosus larvae (Diptera: Chironomidae) to entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae): Potential for control

European Journal of Entomology, 2017
Chironomidae, or non-biting midges, are found worldwide in a wide variety of aquatic habitats. During periods of mass adult eclosion they can become a nuisance and health hazard. Current control methods target the aquatic larval stage and include the use
Cassandra V. EDMUNDS, Craig S. WILDING, Robbie RAE   +2 more
doaj   +1 more source

Contribuição aos Hemilophini (Cerambycidae, Lamiinae) da Colômbia e do Equador Contribution to the Hemilophini (Cerambycidae, Lamiinae) of Colombia and Ecuador

Iheringia: Série Zoologia, 2004
New taxa described: from Ecuador, Quirimbaua gen. nov., type species Q. castroi (Napo); from Colombia: Icupima taua (Cauca), Adesmus murutinga and Tyrinthia dioneae (Valle del Cauca), Essosthrutella acatinga and Hemilomecopterus gen.
Ubirajara R. Martins, Maria Helena M. Galileo   +1 more
doaj   +1 more source

Influence of seasonal changes in daily activity and annual life cycle of Geotrigona mombuca (Hymenoptera, Apidae) in a Cerrado habitat, São Paulo, Brazil

Iheringia: Série Zoologia, 2013
The foraging activity of Geotrigona mombuca Smith, 1863 was studied under natural conditions aiming to verify the influence of seasonal changes on daily flight activity and annual cycle of the colony.
André L. Gobatto, Fátima R. N. Knoll
doaj   +1 more source