Six species of cyclopoid copepods in New Orleans were tested for biological control of Aedes albopictus larvae in discarded tires. Six to 8 weeks after introduction, Diacyclops navus, Acanthocyclops vernalis, Mesocyclops ruttneri and Mesocyclops edax reduced the number of Ae. albopictus larvae by 83, 90, 95 and 96%, respectively. Macrocyclops albidus and Mesocyclops longisetus were the most eff...

Effects of geostrophic kinetic energy flux on the three-dimensional distribution of fish larvae of mesopelagic species (Vinciguerria lucetia, Diogenichthys laternatus, Benthosema panamense and Triphoturus mexicanus) in the southern Gulf of California during summer and fall seasons of stronger stratification were analyzed. The greatest larval abundance was found at sampling stations in geostroph...

Many marine organisms have complex life histories, having sessile adults and relying on the planktonic larvae for dispersal. Larvae swim and disperse in a complex fluid environment and the effect of ambient flow on larval behavior could in turn impact their survival and transport. However, to date, most studies on larvae-flow interactions have focused on competent larvae near settlement. We exa...

Susceptibility of the goldfish to infection with the newly hatched second stage larvae of Contracaecum rudolphii was investigated under laboratory condition. A week after the larvae had been placed in the fish tank, the autopsied goldfish showed the nematodes in their intestine lumen. The majority of the larvae were dead. In week 2 and 3 of exposure, the larvae were being found exclusively in t...

This study was aimed to observe the correlations among egg, larvae and maternal characteristics of Persian sturgeon. A total of 41 females were used and the variables including fertilization rate, incubation survival rate, larvae survival rate during yolk sac absorption (before feeding), and larvae survival rate after first feeding were determined. As a result, fertilization rate was positively...

Three hundred and six fish of 83 species were carefully examined in Kuwait during the period from October 1992 to September 1995 for ascaridoid larvae. Thirty-nine fishes (12.7%) belonging to 23 species were infected with 9 types of ascaridoid third-stage larvae: Anisakis simplex, Terranva spp, Contracaecum spp and 6 different types of Hysterothylacium spp (KA-KF). Hysterothylacium larvae (incl...

essential oil of rosmarinus officinallis was investigated on toxicity and physiological aspect of elm leaf beetle xanthogaleruca luteola mull. for 3rd instar larvae and adults in controlled condition (25 ± 2 °c; 14:10ld; 65% rh). lc50 were estimated 2.55 and 1.11 for 3rd instar larvae and adults respectively. the effect of lc50 dose on remaining insects were investigated on nutritional indices....

myiasis is defined as the infestation of living tissues of vertebrates by dipteran fly larvae. clinically, based on the affected organ of host by dipteran larvae the type of myiasis is determined. oral myiasis is a rare type of myiasis. a two year-old goat with history of anorexia was referred to the veterinary clinic. physical examinations showed the gingival myiasis in lower jaw. a total numb...

The feeding rate of a parasitic gnathiid isopod on fish was examined. Individual fish, Hemigymnus melapterus, were exposed to gnathiid larvae and sampled after 5, 10, 30, 60, and 240 min. I recorded whether larvae had an engorged gut, an engorged gut containing red material, or had dropped off the fish after having completed engorgement; variation among sampling times and larval stages was anal...

While maintained under all combinations of three temperatures and two RH, fifth instar larvae of the Mediterranean flour moth, Ephestia kuehniella were fed wheat treated with spores and crystals of Bacillus thuringiensis var. kurstaki. Larvae that had fed on wheat with the bacterial preparation contained higher concentrations of nodules in their haemocoel than did larvae fed on wheat without ba...