Larval Development in Two Populations of the Ghost Shrimp Callichirus major (Decapoda: Thalassinidea) under Laboratory Conditions

1999 ◽  
Vol 19 (4) ◽  
pp. 844 ◽  
Author(s):  
Karen M. Strasser ◽  
Darryl L. Felder
Keyword(s):  
Larval Development ◽  
Ghost Shrimp ◽  
Laboratory Conditions ◽  
Two Populations

scholarly journals Development time plasticity of the pine processionary moth (Thaumetopoea pityocampa) populations under laboratory conditions

Entomologia ◽  
2015 ◽  
Author(s):  
L. Berardi ◽  
M. Branco ◽  
M.R. Paiva ◽  
H. Santos ◽  
A. Battisti
Keyword(s):  
Life Cycle ◽  
Larval Development ◽  
Development Time ◽  
Adult Emergence ◽  
Thaumetopoea Pityocampa ◽  
Pine Processionary Moth ◽  
Processionary Moth ◽  
Laboratory Conditions ◽  
Wide Range ◽  
Two Populations

The pine processionary moth Thaumetopoea pityocampa (Lepidoptera, Notodontidae) is a univoltine defoliator that is active over a wide range of latitudes and elevations, being largely influenced by temperature variations, especially during larval development across the winter. This work compares field development time with that observed in the laboratory rearing under controlled conditions, in four Th. pityocampa populations characterized by different life history phenology: two populations from the Italian Alps characterized by early and late adult emergence, and two populations from Portugal, the first characterized by winter feeding and late adult emergence, the second by a switch of the larval feeding from winter to summer. The rearing started from the egg stage and was maintained in the laboratory at 20-25°C under natural light in transparent boxes. In spite of the different geographic origins and asynchrony of the period of larval development, all populations maintained an annual life cycle under laboratory conditions, as well as a phenology similar to that of the field populations. Such an outcome was possible due to a trade-off in the duration of the larval and pupal stages, the latter being identified as the phase of development when an efficient regulatory mechanism is acting to maintain the univoltine life cycle.

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

scholarly journals Assessing the role of two populations of Aedes japonicus japonicus for Zika virus transmission under a constant and a fluctuating temperature regime

2020 ◽  
Vol 13 (1) ◽  
Author(s):  
Uros Glavinic ◽  
Jasmin Varga ◽  
Anca Ioana Paslaru ◽  
Jeannine Hauri ◽  
Paul Torgerson ◽  
...  
Keyword(s):  
Constant Temperature ◽  
Temperature Regime ◽  
Zika Virus ◽  
Incubation Temperature ◽  
Transmission Rate ◽  
Control Measures ◽  
Fluctuating Temperature ◽  
Laboratory Conditions ◽  
Temperature Regimes ◽  
Two Populations

Abstract Background Since the huge epidemic of Zika virus (ZIKV) in Brazil in 2015, questions were raised to understand which mosquito species could transmit the virus. Aedes aegypti has been described as the main vector. However, other Aedes species (e.g. Ae. albopictus and Ae. japonicus) proven to be competent for other flaviviruses (e.g. West Nile, dengue and yellow fever), have been described as potential vectors for ZIKV under laboratory conditions. One of these, the Asian bush mosquito, Ae. japonicus, is widely distributed with high abundances in central-western Europe. In the present study, infection, dissemination and transmission rates of ZIKV (Dak84 strain) in two populations of Ae. japonicus from Switzerland (Zürich) and France (Steinbach, Haut-Rhin) were investigated under constant (27 °C) and fluctuating (14–27 °C, mean 23 °C) temperature regimes. Results The two populations were each able to transmit ZIKV under both temperature regimes. Infectious virus particles were detected in the saliva of females from both populations, regardless of the incubation temperature regime, from 7 days post-exposure to infectious rabbit blood. The highest amount of plaque forming units (PFU) (400/ml) were recorded 14 days post-oral infection in the Swiss population incubated at a constant temperature. No difference in terms of infection, dissemination and transmission rate were found between mosquito populations. Temperature had no effect on infection rate but the fluctuating temperature regime resulted in higher dissemination rates compared to constant temperature, regardless of the population. Finally, transmission efficiency ranged between 7–23% and 7–10% for the constant temperature and 0–10% and 3–27% under fluctuating temperatures for the Swiss and the French populations, respectively. Conclusions To the best of our knowledge, this is the first study confirming vector competence for ZIKV of Ae. japonicus originating from Switzerland and France at realistic summer temperatures under laboratory conditions. Considering the continuous spread of this species in the northern part of Europe and its adaptation at cooler temperatures, preventative control measures should be adopted to prevent possible ZIKV epidemics.

scholarly journals Comparative Larval Development in Two Species of the Burrowing Ghost Shrimp Genus Lepidophthalmus (Decapoda: Callianassidae)

1997 ◽  
Vol 17 (3) ◽  
pp. 497-519 ◽  
Author(s):  
Sergio F. Nates ◽  
Darryl L. Felder ◽  
Rafael Lemaitre
Keyword(s):  
Larval Development ◽  
Ghost Shrimp
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