Life history and host specificity ofUrophora sirunaseva(Hering) (Dipt., Tephritidae), a candidate for biological control of yellow starthistle, with remarks on the host plant

1993 ◽  
Vol 116 (1-5) ◽  
pp. 381-390 ◽  
Author(s):  
R. Sobhian
Keyword(s):  
Biological Control ◽  
Life History ◽  
Host Plant ◽  
Host Specificity ◽  
Yellow Starthistle

The life history, host specificity and potential of alagoasa parana Samuelson (Coleoptera: Chrysomelidae) for biological control of Lantana camara in Australia

1988 ◽  
Vol 78 (3) ◽  
pp. 511-518 ◽  
Author(s):  
J. A. Winder ◽  
D. P. A. Sands ◽  
R. C. Kassulke
Keyword(s):  
Biological Control ◽  
Life History ◽  
Host Plant ◽  
Host Specificity ◽  
Biological Control Agent ◽  
Adult Emergence ◽  
Control Agent ◽  
Southern Brazil ◽  
Passiflora Edulis ◽  
Immature Development

AbstractIn southern Brazil, adults and larvae of the halticine beetle Alagoasa parana Samuelson fed on the foliage and flowers of Lantana tiliaefolia and L. glutinosa (Verbenaceae). The life-cycle of this univoltine species from egg to adult emergence took 80-90 days between October and April. The abundance varied seasonally from four to eight adults per 100 branches. Larvae remained on the foliage during development and pupated in moist, loose, friable soil within a cocoon at the base of the host-plant. Adults overwintered and oviposited in litter at the base of the host-plant. In multiple-choice host- specificity studies in Australia, adults fed lightly on Verbena bonariensis and Clerodendrum speciosissimum (Verbenaceae) and produced minute scars on leaves on unrelated passion fruit (Passiflora edulis) and sunflower (Helianthus annuus). However, A. parana completed immature development only on L. camara among the 55 plants tested. The potential of A. parana as a biological control agent for L. camara in Australia is discussed.

Biology of Bucculatrix parthenica Bradley sp. n. (Lepidoptera: Bucculatricidae) and its establishment in Australia as a biological control agent for Parthenium hysterophorus (Asteraceae)

1990 ◽  
Vol 80 (4) ◽  
pp. 427-432 ◽  
Author(s):  
A. S. McClay ◽  
R. E. McFadyen ◽  
J. D. Bradley
Keyword(s):  
Biological Control ◽  
Life Cycle ◽  
Host Plant ◽  
Host Specificity ◽  
Biological Control Agent ◽  
Control Agent ◽  
Field Conditions ◽  
Parthenium Hysterophorus ◽  
Leaf Miners

AbstractBucculatrix parthenica Bradley sp. n., a moth native to Mexico, is described. It has been released and established in Queensland, Australia, as a biological control agent for its host plant, Parthenium hysterophorus. The moth oviposits on leaves of its host. First and second instar larvae are leaf miners, and later instars feed externally on the leaves. The life cycle occupies about 25 days under field conditions. B. parthenica was narrowly oligophagous in host-specificity tests. In Mexico the insect is scarce but in Queensland it has become abundant enough to cause extensive defoliation of its host plant at some sites. Its rapid increase in Queensland is attributed to the absence of parasitism.

scholarly journals Hybridization affects life-history traits and host specificity in Diorhabda spp

2017 ◽  
Author(s):  
E.V. Bitume ◽  
D. Bean ◽  
A.R. Stahlke ◽  
R.A. Hufbauer
Keyword(s):  
Biological Control ◽  
Life History ◽  
Host Specificity ◽  
Life History Traits ◽  
Evolutionary Process ◽  
Control Program ◽  
Cross Hybridization ◽  
Evolutionary Force ◽  
Two Generations ◽  
Adult Mass

AbstractHybridization is an influential evolutionary process that has been viewed alternatively as an evolutionary dead-end or as an important creative evolutionary force. In colonizing species, such as introduced biological control agents, hybridization can negate the effects of bottlenecks and genetic drift through increasing genetic variation. Such changes could be beneficial to a biological control program by increasing the chances of establishment success. However, hybridization can also lead to the emergence of transgressive phenotypes that could alter host specificity; an important consideration when assessing potential non-target impacts of planned agents. In a series of lab experiments, we investigated the effects of hybridization between three species of Diorhabda released to control invasive Tamarix (saltcedar) on life history traits through two generations, and through the third generation for one cross. Depending on the cross, hybridization had either a positive or neutral impact on development time, adult mass, and fecundity. We evaluated preference for the target (saltcedar) relative to a non-target host Tamarixaphylla (athel), and found host specificity patterns varied in two of the three hybrids, demonstrating the possibility for hybridization to alter host preference. Importantly, the overall effects of hybridization were inconsistent by cross, leading to unpredictability in the outcome of using hybrids in biological control.

Some Notes on the Life-history and Habits of Theraptus sp. (Coreidae)

1954 ◽  
Vol 45 (3) ◽  
pp. 429-432 ◽  
Author(s):  
E. M. Tait
Keyword(s):  
Biological Control ◽  
Life History ◽  
Host Plant ◽  
Average Length ◽  
Coconut Palm ◽  
Complete Protection ◽  
Primary Host ◽  
Oecophylla Longinoda ◽  
Length Of Life

The life-history and bionomics of the Coreid bug, Theraptus sp., which causes premature nutfull of coconuts in Zanzibar, were studied in the laboratory and in the field.From the various experiments carried out it is concluded that:—The development of the insect from the egg to the adult took from 26–39½ days depending on temperature and the food available.The average length of life of the female is 45 days during which time she may produce over 100 fertile eggs.The primary host-plant of Theraptus is the coconut palm, but the bug readily infests mango, guava, cinnamon and cacao trees when they are fruiting.The pest will attack and develop successfully on nuts from the newly emerged to the mature ones.Agents which exert a measure of biological control include the tree-nesting ant, Oecophylla longinoda (Latr.), an internal Strepsipteran parasite, an unidentified Reduviid, two unidentified Hymenopterous egg-parasites and possibly some small ant species which prey on the eggs. Of these, only the ant, O. longinoda, is capable of giving complete protection to the palm which it occupies.

DNA Fingerprinting to Improve Data Collection Efficiency and Yield in an Open-Field Host-Specificity Test of a Weed Biological Control Candidate

2010 ◽  
Vol 3 (4) ◽  
pp. 429-439 ◽  
Author(s):  
Brian G. Rector ◽  
Alessio De Biase ◽  
Massimo Cristofaro ◽  
Simona Primerano ◽  
Silvia Belvedere ◽  
...  
Keyword(s):  
Biological Control ◽  
Host Specificity ◽  
Open Field ◽  
Collection Efficiency ◽  
Sequence Similarity ◽  
Weed Biological Control ◽  
Yellow Starthistle ◽  
Field Bioassay ◽  
Molecular Phylogenetic ◽  
Test Plants

AbstractAn open-field test was conducted in southern France to assess the host-specificity of Ceratapion basicorne (Illiger), a candidate for biological control of yellow starthistle. Test plants were infested by naturally occurring populations of C. basicorne but were also exposed to sympatric herbivore species, including other Ceratapion spp. Insects from the test plants were collected directly into tubes of ethanol and were subsequently identified to species according to DNA sequence similarity with morphologically identified reference specimens. This integrated, morphological and molecular identification method was used in an effort to maximize the amount of data gained in the field bioassay and to minimize the number of taxonomist–hours necessary to complete the study. The results obtained showed that the French C. basicorne population only attacked yellow starthistle and cornflower, another known host of C. basicorne. Molecular phylogenetic analysis of the insects collected from all other nonhost plants rejected the possibility that any were C. basicorne.

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