Survival and development of six gypsy moth populations, Lymantria dispar L. (Lepidoptera: Erebidae), from different geographic areas on 16 North American hosts and artificial diet

2020 ◽  
Author(s):  
Melody A. Keena ◽  
Jessica Y. Richards
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
North American ◽  
Artificial Diet ◽  
Survival And Development

An Artificial Diet for Larvae of Calosoma sycophanta (Coleoptera: Carabidae), a Gypsy Moth (Lepidoptera: Lymantriidae) Predator

1998 ◽  
Vol 33 (3) ◽  
pp. 233-240 ◽  
Author(s):  
Ronald M. Weseloh
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Artificial Diet ◽  
Chicken Meat ◽  
Larval Diet ◽  
Beef Liver

A newly-developed larval diet for Calosoma sycophanta L. consists of beef liver and chicken meat. Larvae reared individually on this diet develop at about the same rate and have the same survival as those fed gypsy moth pupae, Lymantria dispar L., the usual prey of the beetle. However, adults of diet-reared larvae were significantly smaller than adults of larvae reared on gypsy moth pupae. When reared in groups on the diet, beetles were significantly smaller and did not survive as well as those fed gypsy moth pupae. This diet, or a variation thereof, may be useful as part of a program to rear the beetle inexpensively.

scholarly journals Comparison of Survival and Development of Gypsy Moth Lymantria dispar L. (Lepidoptera: Erebidae) Populations from Different Geographic Areas on North American Conifers

Insects ◽  
2020 ◽  
Vol 11 (4) ◽  
pp. 260 ◽  
Author(s):  
Melody A. Keena ◽  
Jessica Y. Richards
Keyword(s):  
Gypsy Moth ◽  
North American ◽  
Geographic Range ◽  
Asian Populations ◽  
First Instar ◽  
Gypsy Moths ◽  
Geographic Origins ◽  
Survival And Development ◽  
Different Origins ◽  
Better Than

Host utilization information is critical to managers for estimating the hosts at risk and potential geographic range for gypsy moths from different geographic origins. In this study, the development and survival of gypsy moths from all three subspecies on 13 North American conifers and three broadleaf hosts were compared. There was variation in the ability of gypsy moth larvae from different geographic origins to utilize (survive and develop on) key North American conifers. However, that variation was not consistent within gypsy moth subspecies, but instead was more consistent with populations from different origins being preadapted to utilize different hosts and having different biologic traits. Some Asian populations developed and survived well on some conifers while populations from Europe and North America gained weight faster and/or survived better than some Asian populations. Although development was slower and survival poorer on several of the conifers, first instar larvae were able to utilize conifers unless the needles were tough or feeding deterrents were present. Host phenology was also critical since the early instars fed preferentially on new foliage or buds. Gypsy moth larvae can utilize many hosts, so this makes it a very adaptable invasive species that warrants taking measures to prevent its spread.

scholarly journals Changes in Lymantria dispar protocerebral neurosecretory neurons after exposure to cadmium

2011 ◽  
Vol 63 (4) ◽  
pp. 1287-1292 ◽  
Author(s):  
Larisa Ilijin ◽  
Milena Vlahovic ◽  
Marija Mrdakovic ◽  
Dragana Matic ◽  
Jelica Lazarevic ◽  
...  
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Artificial Diet ◽  
Nuclear Size ◽  
Morphometric Characteristics ◽  
Weight Changes ◽  
Neurosecretory Neurons ◽  
Dry Food ◽  
Size Of Nuclei

Gypsy moth 4th instar caterpillars were fed for 3 days with an artificial diet supplemented with increasing cadmium (Cd) concentrations (0, 10, 30, 100 and 250 ?g?g of dry food weight). Changes in the morphometric characteristics of A1? dorso-medial and L2 dorso-lateral neurosecretory neurons (nsn) were analyzed. In the A1? nsn, Cd supplements led to an enhanced nuclear size, except in the group treated with 250 ?g Cd?g in the form of dry food. The size of L2 type nsn was increased in the groups provided with 30 and 100 ?g Cd?g, while no differences in the size of nuclei was detected in L2 neurons among the experimental groups.

scholarly journals Susceptibility of the Gypsy Moth Lymantria dispar (Lepidoptera: Erebidae) to Nosema pyrausta (Microsporidia: Nosematidae)

Insects ◽  
2021 ◽  
Vol 12 (5) ◽  
pp. 447
Author(s):  
Anastasia G. Kononchuk ◽  
Vyacheslav V. Martemyanov ◽  
Anastasia N. Ignatieva ◽  
Irina A. Belousova ◽  
Maki N. Inoue ◽  
...  
Keyword(s):  
Gypsy Moth ◽  
Lymantria Dispar ◽  
Ostrinia Nubilalis ◽  
Host Plants ◽  
European Corn Borer ◽  
Artificial Diet ◽  
Western Siberia ◽  
Corn Borer ◽  
Baculovirus Infection ◽  
Diet Versus

The gypsy moth, Lymantria dispar, is a notorious forest defoliator, and various pathogens are known to act as natural regulators of its population density. As a widespread herbivore with a broad range of inhabited areas and host plants, it is potentially exposed to parasitic microorganisms from other insect hosts. In the present paper, we determined the susceptibility of gypsy moth larvae to the microsporidium Nosema pyrausta from the European corn borer, Ostrinia nubilalis. Gypsy moth samples from two localities of Western Siberia were used. N. pyrausta developed infections in the salivary gland and adipose tissue of gypsy moth prepupae and pupae, forming spore masses after 30 days of alimentary exposure to the second instar larvae. Among the experimental groups, the infection levels ranged from 0 to 9.5%. Effects of a covert baculovirus infection, phenylthiourea pretreatment and feeding insects on an artificial diet versus natural foliage were not significant in terms of microsporidia prevalence levels. Thus, L. dispar showed a low level of susceptibility to a non-specific microsporidium. It can be referred to as a resistant model host and not an appropriate substitute host for laboratory propagation of the microsporidium.

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