Fall spawning pacific salmon provision large amounts of yolk to their eggs to allow survival of larvae during under the ice winter conditions. This yolk provisioning leads to maternal offloading of persistent organic pollutants (POPs) to eggs and larvae. Previous research has shown that Chinook salmon larvae exhibit limited capacity to eliminate POPs during the cold water period resulting in bi...

The residual activity of Bacillus thuringiensis subsp. israelensis (BTI) and methoprene, a juvenile hormone analogue (juvenoid) was assessed when their novel granule formulations, were tested on mosquito and fly larvae. BTI B 5 GR mos­ quito larvicide at 5 and 10 ppm (a.i.) gave 100% control against L4 larvae of Aedes aegypti for 4 and 12 weeks, respectively. Similar prolonged 16 weeks efficien...

The response of three larval–pupal parasitoids, Diachasmimorpha longicaudata (Ashmead), Diachasmimorpha tryoni (Cameron), and Tetrastichus giffardianus Silvestri, to the Hamakua pamakani gall fly, Procecidochares alani L., was determined in the laboratory. We also observed responses of these parasitoids to their normal rearing hosts, Bactrocera dorsalis (Hendel) andCeratitis capitata (Weidemann...

Honeybee (Apis mellifera) society is characterized by a helper caste of essentially sterile female bees called workers. Workers show striking changes in lifespan that correlate with changes in colony demography. When rearing sibling sisters (brood), workers survive for 3-6 weeks. When brood rearing declines, worker lifespan is 20 weeks or longer. Insects can survive unfavorable periods on endog...

Survival problems are encountered at early stages of intensive fish rearing and antibiotics are widely used to remedy the situation. Probiotics may provide a potential alternative method to protect larvae from opportunistic and pathogenic bacteria and promote a balanced environment. This study was designed to search for new probiotics to target this critical period in cod rearing. Potential pro...

Bacillus spp. are Gram-positive spore-forming bacteria used commercially as probiotics in the larviculture of fish. Bacillus spp. can act positively on cultured organisms by enhancing their survival and growth, stimulating their digestive and immune systems, and improving water quality. In this present study, grass carp larvae were fed on Artemia urmiana, Artemia fransiscana and Artemia parthen...

the mill moth, ephestia kuehniella zeller and indian meal moth, plodia interpunctella (hubner) are two injuriously important pests of stored products worldwide. harobracon hebetor (say) has been used as a biological control agent of moth’s larva in peanut storehouses and as well in packaged cereal products. in the present study, the efficacy of h. hebetor in parasitizing larva of the mill moth ...

In this paper, 981 reared juveniles of gilthead seabream (Sparus aurata) were analysed, 721 of which were from a commercial hatchery located in Northern Italy (Venice, Italy) and 260 from the Hellenic Center for Marine Research (Crete, Greece). These individuals were from 4 different egg batches, for a total of 10 different lots. Each egg batch was split into two lots after hatching, and reared...

Conium maculatum L. (Apiaceae), or poison hemlock, is an invasive plant native to Europe that has become extensively naturalized throughout North America. This species contains piperidine alkaloids, including coniine and -coniceine, that are highly toxic to vertebrates. C. maculatumwas relatively free from herbivores in North America until the accidental introduction 30 yr ago of its monophagou...