Results 31 to 40 of about 162,464 (343)
SUPERNUMERARY LARVAL INSTARS IN CYCLORRHAPHOUS DIPTERA
1. The developmental program for metamorphosis is determined in third instar larvae of Calliphora and Sarcophaga very early after ecdysis. The process is activated by feeding and can be delayed for many days by starvation.2. High doses of ecdysterone (20 µg per larva) injected just after ecdysis or in starved larvae cause a precocious molt and the ...
J. Žďárek, K. Sláma
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Ostracods belonging to the genus Bennelongia differ much in valve morphology between adults and juveniles. Adult valves are asymmetrical, characterised by a beak-like feature in the antero-ventral region of the left valve, and, with some notable ...
Patrick De Deckker, Koen Martens
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Background The greenhouse whitefly, Trialeurodes vaporariorum (Westwood) (Hemiptera: Aleyrodidae), is a cosmopolitan, polyphagous and a serious pest of vegetables and ornamentals in greenhouse.
Anamika Walia +4 more
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Silencing of two insulin receptor genes disrupts nymph-adult transition of alate brown citrus aphid [PDF]
Insulin receptors play key roles in growth, development, and polymorphism in insects. Here, we report two insulin receptor genes (AcInR1 and AcInR2) from the brown citrus aphid, Aphis (Toxoptera) citricidus.
Ding, Bi-Yue +7 more
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Notes on the Biology and Parasitoids of the Sweet Fern Underwing (Lepidoptera: Noctuidae) in Michigan [PDF]
(excerpt) The sweet fern underwing, Catocala antinympha (Hubner), sometimes called the wayward nymph (Holland, 1968), is one of several lepidopterous defoliators of sweet fern, Comptonia peregrina (L.) Coult.
Wilson, Louis F
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Factors affecting methylmercury biomagnification by a widespread aquatic invertebrate predator, the phantom midge larvae Chaoborus [PDF]
MeHg biomagnification by the phantom midge Chaoborus in relation to MeHg concentrations in their prey and its migratory behavior was investigated in two Canadian Precambrian Shield lakes.
Aldamman, Lama +5 more
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Determination of female-biased sexual size dimorphism in moths with a variable instar number: The role of additional instars [PDF]
While the ultimate causes and adaptive significance of sexual size dimorphism (SSD) have been extensively studied, the developmental mechanisms behind this phenomenon have received little attention. Going through an additional larval instar may form a specific way of achieving SSD in arthropods. In the present study, the mechanisms of SSD determination
Toomas Tammaru, Toomas Esperk
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Primarily produced via transesterification of lipid sources, fatty acid methyl ester (FAME) of biodiesel derived from insect larvae has gained momentum in a great deal of research done over other types of feedstock.
Chung-Yiin Wong +8 more
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The Growth and Survival of Early Instars of \u3ci\u3eBellura Obliqua\u3c/i\u3e (Lepidoptera: Noctuidae) on \u3ci\u3eTypha Latifolia\u3c/i\u3e and \u3ci\u3eTypha Angustifolia\u3c/i\u3e [PDF]
Larvae of the noctuid moth Bellura obliqua are frequently encountered on Typha latifolia, but less commonly on Typha angustifolia. Experiments were conducted to compare the growth and survivorship of early B. obliqua instars on the two species of cattail.
Penko, J. M, Pratt, D. C
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The final emergence of the Coromandel Marsh Dart Damselfly Ceriagrion coromandelianum was studied for 50 days (22 January–12 March, 2011) from the botanical garden of Hislop College, Nagpur, India, (a semi controlled site) where small underground cement ...
Nilesh R. Thaokar +2 more
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