نتایج جستجو برای: eggs and larvae
تعداد نتایج: 16836178 فیلتر نتایج به سال:
Phytosanitation regulations in several international markets require postharvest treatments to control codling moth, Cydia pomonella (L.) (Lepidoptera: Tortricidae), in various commodities. Thermal treatments are gaining acceptance to replace chemical fumigation. Determining the most thermal-tolerant life stage is essential in the development of effective postharvest insect control protocols ba...
the eggs and larvae of the indian meal moth, plodia interpunctella (hübner), are widely used in mass rearing of parasitoids and predators. feeding indices and some biological parameters of p. interpunctella were studied on bran of different wheat cultivars ('back-cross roshan', 'khooshe pishgam', 'khoshki line 9', 'arg', 'alvand', 'pishtaz', 'ws-89-2', 'sepahan' and 'bam') when incorporated int...
Corn rootworm (CRW) beetles exhibit a univoltine life cycle. Feral adults deposit their eggs into the soil of cornfields during July and August where they undergo diapause and overwinter. The following spring eggs hatch beginning in late May and continuing on into the middle part of June. Larvae of the new generation feed on developing corn roots. After reaching the third instar larvae pupate i...
Human myiasis is a parasitosis found in tropical and underdeveloped countries. It usually affects the elderly, unhealthy and mentally disabled individuals. It is caused by dipterous that lay their eggs in necrotic or infected tissues, although areas of the body that are apparently healthy can also be affected. Frequently the fly deposits several eggs on the peripheral parts of scratches and wou...
The natural reproductive ecology of freshwater eels remained a mystery even after some of their offshore spawning areas were discovered approximately 100 years ago. In this study, we investigate the spawning ecology of freshwater eels for the first time using collections of eggs, larvae and spawning-condition adults of two species in their shared spawning area in the Pacific. Ovaries of female ...
Females and eggs of Toxorhynchites r. rutilus were labeled with 32P by feeding fourth-stage larvae 32P labeled Aedes aegypti larvae. Eggs from females up to 3 weeks in age had detectable levels of radioactivity and individual eggs contained ca. 0.3% of the mother's total radioactivity. Comparisons of labeled and unlabeled females in indoor and outdoor cage tests indicated that survival and fecu...
Background and Objectives: Toxocariasis is a parasitic disease which is caused by larvae of Toxocara canis in human. The aim of this study was to determine the contamination of public parks in Zanjan with Toxocara spp. eggs in 2018. Materials and Methods: In the present cross-sectional study, 90 soil samples were taken from 18 public parks in Zanjan city. The samples were tested by the Clayton...
Hyphessobrycon eques is a famous fish for ornamental fish market and aquarium. They are inhabit in regions of Amazon and Paraguay River basin. Serpae fishs were investigated 2-3 males are chased to female, and then males attempted to simulate the females abdomen. After fertilization, eggs were kept in incubators at 28°C. The fertilized eggs had adhesive and demesal characteristics and had a mea...
Myiasis is the condition or conditions resulting from the invasion of the tissues and organs of man and other animals by the eggs or larvae of dipterous flies. Such invasion may be simple, i.e. without any severe constitutional disturbances, or may result in violent disturbances causing even death. According to the site of invasion one may have cutaneous, dermal, intestinal, urinary, nasal, ora...
Two species of mayfly nymphs, Habroleptoides modesta (Hagen) and Habrophlebia lauta (Eaton) (Ephemeroptera: Leptophlebiidae), were found as suitable experimental intermediate hosts of the fish nematode Rhabdochona denudata (Dujardin, 1845) (Rhabdochonidae), an intestinal parasite of Palaearctic cyprinids. The parasite's eggs were obtained from nematode gravid females parasitizing the European c...
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