INFLUENCE OF DIET ON LARVAL DEVELOPMENT OF FORFICULA SENEGALENSIS SERVILLE (DERMAPTERA: FORFICULIDAE) UNDER LABORATORY CONDITIONS

1998 ◽  
Vol 130 (2) ◽  
pp. 169-172 ◽  
Author(s):  
Ibrahim Baoua Boukary ◽  
Jean-Claude Tourneur ◽  
Jean Gingras
Keyword(s):  
Larval Development ◽  
High Mortality ◽  
Natural Environment ◽  
Adult Stage ◽  
Mixed Diet ◽  
Insect Fauna ◽  
Laboratory Conditions ◽  
Duration Of Development

AbstractThe effects of various diets composed of millet leaves and stems, millet anthers, and animal prey on the development of Forficula senegalensis Serville were studied in the laboratory using mortality, duration of development, and weight at eclosion and at imaginal moult as comparative parameters. A diet of millet leaves and stems did not allow larvae to reach the adult stage. A diet of millet anthers allowed the production of adults, but with high mortality. When fed animal prey, the larvae developed adequately into adults, but with the mixed diet (prey and millet anthers) development was more rapid and the weight of the adults produced was greater. Millet leaves are probably not an important part of larval earwigs diet in their natural environment. They do, however, eat millet anthers and they may also feed on the insect fauna that lives on millet.

Digestion in the tsetse fly Glossina morsitans Westw.: the effect of feeding field-caught flies on guineapigs in the laboratory

1967 ◽  
Vol 57 (3) ◽  
pp. 447-450 ◽  
Author(s):  
P. A. Langley
Keyword(s):  
Natural Environment ◽  
Environmental Conditions ◽  
Tsetse Fly ◽  
Rapid Loss ◽  
Glossina Morsitans ◽  
The Third ◽  
Laboratory Conditions ◽  
Effect Of Feeding ◽  
Blood Meals

It has been shown that adults of Glossina morsitans Westw. that have fed from a bait ox in their natural environment digest their blood meals more rapidly than others that have emerged and been fed in the laboratory, even when both are maintained under identical environmental conditions after feeding.In further experiments with G. morsitans in Rhodesia, flies caught in the field and fed in the laboratory were found to lose their ability to digest their meals rapidly. Measurements, made throughout three hunger cycles, of the rate of digestion, as reflected in the rate of excretion, of blood meals by field-caught flies fed on guineapigs in the laboratory showed that this was not significantly different from that of the normal, flied-fed flies during the first two hunger cycles but that during the third it fell to a level comparable to that of flise that emerged and were fed in the laboratory.It is concluded that whatever may be the events that condition the field flies to digest their meals rapidly in the natural environment, these are repeated with the ingestion of each meal, and that laboratory conditions cause a rapid loss of this greater digestive capability.

scholarly journals Larval Development of Megalobrachium Roseum (Decapoda: Anomura: Porcellanidae) under Laboratory Conditions

2002 ◽  
Vol 22 (1) ◽  
pp. 113-125 ◽  
Author(s):  
Gonzalo Hernández ◽  
Juan I. Gaviria ◽  
Karen Graterol ◽  
Juan A. Bolaños
Keyword(s):  
Larval Development ◽  
Laboratory Conditions

Description of life cycle and preimaginal stages of Alecton discoidalis Laporte, 1833 (Coleoptera: Lampyridae) under laboratory conditions

Zootaxa ◽  
2020 ◽  
Vol 4816 (1) ◽  
pp. 81-91 ◽  
Author(s):  
ORMAILY MADRUGA ◽  
MARC A. BRANHAM
Keyword(s):  
Egg Production ◽  
Body Shape ◽  
Adult Stage ◽  
Widespread Species ◽  
Larval Instars ◽  
General Body ◽  
Laboratory Conditions ◽  
Preimaginal Stages ◽  
Terrestrial Snails ◽  
Western Half

Alecton discoidalis Laporte, 1833 is the most widespread species of the only firefly genus endemic to Cuba. It is commonly found in limestone landscapes across the western half of the country. Larvae of A. discoidalis were collected at Pan de Matanzas and reared through the adult stage under laboratory conditions. Larvae were fed mainly terrestrial snails from the families Potamiidae and Helicinidae. Alecton discoidalis underwent between four and eight larval instars. Females had more larval instars than males likely due to the need to gain more body mass for egg production. Eggs, larvae and pupae are described and illustrated, with emphasis on general body shape, as well as details of the larval head, antennae and mouthparts. Alecton discoidalis females are both brachypterous and physogastric. 

scholarly journals Accidentally catching of the catfish Lophiosilurus alexandri (Steindachner, 1876) larvae in aquariums with different colors

2019 ◽  
Vol 79 (4) ◽  
pp. 612-616
Author(s):  
M. M. Pedreira ◽  
D. C. Costa ◽  
M. Schorer
Keyword(s):  
Larval Development ◽  
Blue Light ◽  
High Mortality ◽  
Standard Length ◽  
Larval Life ◽  
Visual Ability ◽  
Final Development ◽  
Good Contrast

Abstract The aim of this study was to evaluate the effect of different colors in development and survival of catfish Lophiosilurus alexandri larvae, as well as over the visual ability of the handler. Larvae were placed in 5 L-aquariums at a density of 7 larvae L-1 , and aquariums had different colors, and were: green and blue (light colors); brown and black (dark colors). The final development; survival, total and standard length, weight and biomass of the larvae were similar in all colored aquaria. The highest mortality occurred during the first days after hatching, declining over the period, when it is observed the larval development, indicating that care should be necessary in the first few days. During cleaning handling, the accidental catch of larvae was higher in black aquariums. In the first days of life, due to the fragility of the larvae, it is possible to verify that between the second and third day occur the greatest mortalities. The number of accidentally captured larvae was lower than the mortality, suggesting that the high mortality in early larval life is not influenced by the handler management. The catfish L. alexandri larvae should be cultivated in aquariums that allow a good contrast between the larvae and the background, to avoid accidental capture of larvae by the handler. It is suggested to avoid the use of dark and black aquariums.

scholarly journals Amblyomma nodosum (Neumann, 1899): observations on life cycle under laboratory conditions

2015 ◽  
Vol 24 (3) ◽  
pp. 357-360 ◽  
Author(s):  
Michele da Costa Pinheiro ◽  
Elizabete Captivo Lourenço ◽  
Iwine Joyce Barbosa de Sá-Hungaro ◽  
Kátia Maria Famadas
Keyword(s):  
Life Cycle ◽  
Relative Humidity ◽  
Environmental Conditions ◽  
Oryctolagus Cuniculus ◽  
Adult Stage ◽  
Immature Stages ◽  
Experimental Conditions ◽  
Laboratory Conditions ◽  
Natural Hosts

The natural hosts of Amblyomma nodosum in the immature stages are a variety of birds and the anteater in the adult stage. However, so far no data have been published about this tick’s life cycle. To fill this gap, a record was made of its development under laboratory conditions. All the procedures were controlled in a BOD chamber set at 27±1 °C and 80±10% relative humidity and scotophase. The parasitic stages were raised on rabbits (Oryctolagus cuniculus Linnaeus, 1758), from which more than 50% of larvae and nymphs were recovered, although only a small portion performed ecdysis. The adults did not fixed on the rabbits, which suggests that the experimental conditions were unsuitable for the requirements of this species. The data obtained here indicate that A. nodosum is highly dependent on its host and environment whereas under laboratory conditions and host chosen for the study was not obtained satisfactory results and new studies with different hosts and new environmental conditions should be elaborated.

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