Realized and Potential Fecundity of the Mexican Rice Borer (Lepidoptera: Pyralidae) as a Function of Pupal Weight

1995 ◽  
Vol 24 (1) ◽  
pp. 94-98 ◽  
Author(s):  
D. W. Spurgeon ◽  
P. D. Lingren ◽  
T. N. Shaver ◽  
J. R. Raulston
Keyword(s):  
Pupal Weight ◽  
Potential Fecundity ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Pupal Development and Adult Emergence Patterns of the Mexican Rice Borer (Lepidoptera: Pyralidae)

1995 ◽  
Vol 24 (1) ◽  
pp. 76-87 ◽  
Author(s):  
D. W. Spurgeon ◽  
P. D. Lingren ◽  
J. R. Raulston ◽  
T. N. Shaver
Keyword(s):  
Adult Emergence ◽  
Pupal Development ◽  
Emergence Patterns ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Stimulation of Oviposition and Heterosis in Interstrain Crosses of European Corn Borer (Lepidoptera: Pyralidae)

1992 ◽  
Vol 27 (3) ◽  
pp. 239-250
Author(s):  
Clifford B. Keil ◽  
Christopher Tipping
Keyword(s):  
Egg Production ◽  
European Corn Borer ◽  
Random Mating ◽  
Daily Basis ◽  
Pupal Weight ◽  
Corn Borer ◽  
Egg Masses ◽  
Lepidoptera Pyralidae ◽  
Mass Mating ◽  
Stimulation Of

Hybrid matings of two Ostrinia nubilalis (Hübner) (Lepidoptera: Pyralidae) colonies (N and O), established in the laboratory a year apart, demonstrated positive heterosis in the F1 generation as indicated by increases in pupal weight (6%), number of egg masses per female (65%) and number of eggs per female (77%) as compared to intra-colony crosses in mass matings. In contrast, pupation date, an indicator of development time, was intermediate in the hybrids relative to the parental colonies. There was also a 37% increase in the numbers of eggs/female and a 45% increase in egg masses/female in the hybrid parental cross. We investigated this stimulation of oviposition in single female, reciprocal crosses. Oviposition stimulation was directional with the cross of N colony males x O colony females exhibiting significantly higher numbers of total eggs/female and egg masses/female on a daily basis. Colony O females in this cross laid more large egg masses than females in other crosses. Data from individual female crosses demonstrated that egg production in hybrid mass mating experiments was consistent with random mating of males and females from both colonies.

Effects of Snowdrop Lectin on Mexican Rice Borer (Lepidoptera: Pyralidae) Life History Parameters

2003 ◽  
Vol 96 (3) ◽  
pp. 950-956 ◽  
Author(s):  
M. Sétamou ◽  
J. S. Bernal ◽  
T. E. Mirkov ◽  
J. C. Legaspi
Keyword(s):  
Life History ◽  
Life History Parameters ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Field Evaluations of Parasitoids of Larval Stalkborers Against Eoreuma loftini (Lepidoptera: Pyralidae) in Rice

1995 ◽  
Vol 30 (3) ◽  
pp. 406-414 ◽  
Author(s):  
R. S. Pfannenstiel ◽  
H. W. Browning
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Eoreuma Loftini ◽  
Allorhogas Pyralophagus ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Five species of parasitoids of larval stalkborer were evaluated in Texas in 1987 against the Mexican rice borer, Eoreuma loftini (Dyar), in field enclosures in rice, Oryza sativa L. The braconids, Alabagrus stigma (Brullé) and Allorhogas pyralophagus Marsh, and the bethylid, Goniozus natalensis Gordh, each parasitized >5% of the available E. loftini. The braconids, Apanteles minator Muesebeck and Macrocentrus prolificus Wharton, parasitized <1% of the available hosts. Allorhogas pyralophagus parasitized the highest percentage of borers, including 65.6% of the fifth- and sixth-instar E. loftini. Alabagrus stigma and G. natalensis parasitized fewer borers overall, although parasitism by A. stigma averaged 21.2% of small E. loftini in the rice leafsheaths. Alabagrus stigma, A. pyralophagus, and G. natalensis are candidates for further evaluation in the event that E. loftini becomes a pest of rice in Texas.

A new species of Lydella (Diptera: Tachinidae) from Mexico with a discussion of the definition of the genus

1994 ◽  
Vol 84 (1) ◽  
pp. 131-136 ◽  
Author(s):  
Norman E. Woodley
Keyword(s):  
New Species ◽  
Eoreuma Loftini ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer ◽  
Definition Of ◽  
A New Species

AbstractFollowing the discovery of Lydella jaliscosp. n. (from Jalisco, Mexico), a parasite of the Mexican rice borer, Eoreuma loftini (Dyar) (Lepidoptera: Pyralidae), the limits of the genus Lydella Robineau-Desvoidy have been widened to include Diatraeophaga Townsend syn. n., Metoposisyrops Townsend syn. n., and Metagonistylum Townsend syn. n. All species regarded as belonging to Lydella are listed, with L. minense (Townsend) comb. n., L. oryzae (Townsend) comb. n., L. scirpophagae (Chao & Shi) comb. n., L. sesamiae (Mesnil) comb. n., and L. striatalis (Townsend) comb. n.

Field Evaluations of Pheromone-Baited Traps for Monitoring Mexican Rice Borer (Lepidoptera: Pyralidae)

1991 ◽  
Vol 84 (4) ◽  
pp. 1216-1219 ◽  
Author(s):  
T. N. Shaver ◽  
H. E. Brown ◽  
J. W. Bard ◽  
T. C. Holler ◽  
D. E. Hendricks
Keyword(s):  
Baited Traps ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

Effects of Snowdrop Lectin on Mexican Rice Borer (Lepidoptera: Pyralidae) Life History Parameters

2003 ◽  
Vol 96 (3) ◽  
pp. 950-956 ◽  
Author(s):  
M. Sétamou ◽  
J. S. Bernal ◽  
T. E. Mirkov ◽  
J. C. Legaspi
Keyword(s):  
Life History ◽  
Life History Parameters ◽  
Lepidoptera Pyralidae ◽  
Mexican Rice Borer

scholarly journals PERKEMBANGAN DAN REPRODUKSI CROCIDOLOMIA PAVONANA (F.) (LEPIDOPTERA: PYRALIDAE) PADA PAKAN ALAMI DAN SEMIBUATAN

2004 ◽  
Vol 4 (2) ◽  
pp. 53-61
Author(s):  
Novalia Jelita Sari ◽  
Djoko Prijono
Keyword(s):  
Emerging Adults ◽  
Chinese Cabbage ◽  
Larval Instar ◽  
The Other ◽  
Pupal Weight ◽  
Artificial Diets ◽  
Adult Lifespan ◽  
Pupal Period ◽  
Microbial Inhibitors ◽  
Lepidoptera Pyralidae

Development and reproduction of Crocidolomia pavonana (F.) (Lepidoptera: Pyralidae) on natural and artificial diets.  Development and reproduction of Crocidolomia pavonana on natural and artificial diets were studied in the laboratory (25.2 ± 0.9 C; 84.6% ± 6.7% RH; ca. 12 h photophase).  The natural diets tested were broccoli, cabbage, chinese cabbage, and cauliflower leaves.  The artificial diets used were agar–based general lepidopteran diets mixed with red bean or broccoli leaves, and supplemented with vitamins and microbial inhibitors.  Observation of insect development was done since the egg stage.  After the eggs hatched, larvae were kept singly in plastic cups and fed with appropriate diets.  Fifty larvae were used for each diet.  Records were kept with regard to the duration of each larval instar, pupal period, and the pupal weight.  The emerging adults were paired, and then the number of dead adults and that of eggs laid were recorded daily.  On all the natural diets tested, the larval stage of C. pavonana passed through four instars.  The egg incubation, total larval developmental, and pupal period of C. pavonana on chinese cabbage were the shortest compared to those on the other natural diets.  The pupal weight, however, was the highest on broccoli, followed by that on chinese cabbage, cabbage, and cauliflower.  The female fecundity was also the highest on broccoli (average 258 eggs/female) followed by that on chinese cabbage (212), cauliflower (162), and cabbage (102).  Broccoli diet also yielded adults with the longest lifespan although the adult lifespan on broccoli was not significantly different from that on the other natural diets, except that of males on cabbage.  C. pavonana failed to develop successfully on six kinds of artificial diets tested.  The best artificial diet (broccoli–based diet with microbial inhibitors 20% of the normal amount) only yielded two males and five females with deformed wings, but none of the emerging females produced eggs.

Spatial Distribution Patterns of the Mexican Rice Borer (Lepidoptera: Pyralidae) in Sugar Cane

2005 ◽  
Vol 40 (1) ◽  
pp. 16-24
Author(s):  
D. W. Spurgeon ◽  
J. R. Raulston
Keyword(s):  
Spatial Patterns ◽  
Random Distribution ◽  
Rio Grande Valley ◽  
Distribution Patterns ◽  
Population Estimates ◽  
Lower Rio Grande Valley ◽  
Saccharum Spp ◽  
Lepidoptera Pyralidae ◽  
Field Heterogeneity ◽  
Mexican Rice Borer

The Mexican rice borer, Eoreuma loftini (Dyar), is the primary pest of sugarcane (Saccharum spp.) in the Lower Rio Grande Valley of Texas; yet, few studies have examined its economic impact. Knowledge of the spatial patterns of the rice borer and associated damage in sugarcane would be useful in designing studies to further investigate the economic importance of this pest. We examined the respective spatial patterns of larvae, pupae, tunnels and damaged internodes using Taylor's power law for population estimates based on plots or sites within fields and based on fields. Estimates based on plots or sites featured smaller sample sizes and greater variability than estimates based on fields. Analyses based on plots or sites also indicated between-field heterogeneity in estimates of Taylor's b for small, medium and large larvae, and for pupae. Such heterogeneity was not observed for total larvae, tunnels and bored internodes. In contrast, analyses based on fields indicated that common-slopes models were appropriate for each population category. The inconsistencies between results of analyses for plots or sites compared with those for fields probably resulted from the inadequacy of population estimates derived from the smaller-sized sample units. Based on samples from fields, counts exhibited mild clumping except for medium-sized larvae (random distribution) and pupae (regular distribution). Our results indicate that counts of most population categories of the rice borer are mildly clumped and that the observed distribution pattern is sensitive to sample size.

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