Host-plant specialisation and habitat restriction in an endangered insect,...

European Journal of Entomology;  January 1, 2004 ;     700+ words ......d. rutilus. Host-plant choice by ovipositing...feed on other Rumex species without detriment...their natural host plant. This suggests...alternative Rumex, expressing...between the three Rumex species but longer distance...maintain this host-plant ...

PREFERENCE-PERFORMANCE RELATIONSHIPS AND EFFECTS OF HOST PLANT CHOICE IN...

Ecological Monographs;  November 1, 1999 ;     700+ words ......factors other than those intrinsic to the host plant are important in determining host range...factors such as predation, in determining host plant choice in insects has been the subject...specialized than insects to particular host plant taxa (Hay and Steinberg 1992), many species...

LOCAL SPECIALIZATION AND LANDSCAPE-LEVEL INFLUENCE ON HOST USE IN AN...

Ecology;  August 1, 2000 ;     700+ words ......ILKKA HANSKI [1] Abstract. We studied host plant abundance, host use, and oviposition...1993-1996, we document spatial variation in host plant use in relation to their abundance (electivity...other and characterized by differences in host plant availability and host use. We found ...

Amazonian ants 'ambush and torture' victims

The Hindustan Times;  April 23, 2005 ;     324 words ......the honeycombs using fibre from their host plant's stems. They even farm a certain fungus on their host plant to reinforce its structure. This is the...also farm a certain fungus on their host plant. Researchers believe the fungus is transported...

A Central Role of Abscisic Acid in Drought Stress Protection of...

Plant Physiology;  November 1, 2007 ;     700+ words ......provided with nutrients and water by the host plant. The lack of an intact epidermis or cuticle...water. However, neither the tumor nor the host plant displays wilting. This phenomenon points...adaptation in both tumors and the crown gall host plant. To understand the underlying ...

Parasitic plant gets more than a meal.

Science News for Kids;  August 16, 2008 ;     530 words ......Some RNA molecules siphoned from the host plant remain stable in dodder, traveling several...scientists could design attack RNA for a host plant, which would interfere with dodder's...If tiny dodder plantlets don't find a host plant to glom onto they'll die within a week...

Hosting the quandong. (journal extracts).(tree research)(Brief Article)

Ecos;  April 1, 2001 ;     345 words ......system has tapped into the roots of a host plant. So growers always plant host plants...that glucose moves from the myoporum host plant to the quandong trees, no doubt benefitting...quandong obtains some water from its host plant. Quandong growers in New South Wales...

Parasitic Weed Seems to Smell Its Prey

AP Online;  September 28, 2006 ;     659 words ......University. The question of how dodder finds a host plant has puzzled researchers. Many thought...host was thought to be independent of host plant influences. The identification of volatiles...directed growth of the parasite toward a host plant is very interesting." "Even more ...

Bugs starting to bed down for the winter

The Topeka Capital-Journal;  November 4, 2006 ;     700+ words ......winter in the female bags attached to the host plant (each overwintering female bag may contain...places), some aphids, most scales (on the host plant, under the shell that protects the overwintering...European pine sawfly (on needles of the host plant), iris borer (on the leaves) ...

Non-host volatiles do not affect host acceptance by alate virginoparae of...

European Journal of Entomology;  January 1, 2005 ;     700+ words ......it was shown that volatiles of a non-host plant (alfalfa, Medicago sativa L.) did not...Rhopalosiphum padi L., once it was settled on a host plant (wheat, Triticum aestivum L.). INTRODUCTION Host plant selection by aphids consists of a sequence...

Diversity of Parasitic Cuscuta and their Host Plant Species in a...

Bulletin (Southern California Academy of Sciences);  April 1, 2001 ;     700+ words ......dodder (Cuscuta spp.) on a variety of host plant species was quantitatively investigated...their parasitic nature on a variety of host plant species, different Cuscuta species demonstrate...dumosa) (Beauchamp 1986). Two common host plant species of Cuscuta denticulata are creosote...

SOCIAL CLIMBERS; DESIGN IT.(Features)

Sunday Mirror (London, England);  November 12, 2006 ;     127 words ......to stand the competition for water and food with the host plant. Varieties of summer-flowering Clematis viticella (left...ideal and are best selected to coincide with when the host plant is in flower to make it a more stunning feature in the...

Tachinid parasitoids affect host plant choice by caterpillars to increase...

Ecology;  March 1, 1997 ;     700+ words ......ask whether caterpillars alter their host plant choice after they have been parasitized...spring and summer. METHODS Parasitism and host plant choice Since caterpillar survival depended on host plant used (English-Loeb et al. 1993), we conducted...

Oviposition site choice in Harris' checkerspot, Charidryas harrisii...

Northeastern Naturalist;  January 1, 2001 ;     700+ words ......determine which characteristics of its host plant, flat-topped white aster (Aster umbellatus...suggests management possibilities for the host plant population of this butterfly species...groups until they have defoliated their host plant, at which time they move on to a nearby...

Carbon uptake and the metabolism and transport of lipids in an arbuscular...

Plant Physiology;  June 1, 1999 ;     700+ words ......arbuscular mycorrhizal symbiosis: The host plant enjoys enhanced mineral uptake and the...phosphate pathway than does hexose in the host plant. Abbreviations: AM, arbuscular mycorrhizal...crop plants. Among the benefits for the host plant that have been ascribed to this symbiosis...