Feeding preference and reproduction of the beet leafhopper on two Russian Thistle plant species

In model experiments with leaf disks from Brassica napus L. subsp. napus and Thlaspi arvense L. and Sinapis arvensis L. in spring periods (May–June) of 2006–2007 feeding preferences of Phyllotreta herbivores to the above-mentioned crop and two common weeds were investigated. In seedlings of identical ontogenetic stages insignificantly higher feeding injuries were recorded in B. napus. Between the two monitored weeds insignificantly higher herbivory was found in S. arvensis compared to T. arvense. In a comparison of older crop and younger weeds and vice versa, flea beetles significantly preferred the four-leaf seedling stage to the cotyledon seedling stage irrespective of the monitored plant species. Though generally in feeding preference of flea beetles a general drift B. napus > S. arvensis > T. arvensis was recorded, the sequence of leaves also played its role under conditions of this experiment.

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Feeding Preference and Habitat Association of Defassa Waterbuck (Kobus ellipsiprymnus defassa) in Nechisar National Park, Southern Ethiopia

The Scientific World JOURNAL ◽

10.1155/2021/7498662 ◽

2021 ◽

Vol 2021 ◽

pp. 1-8

Author(s):

Gatriay Tut Deng ◽

Birtukan Tsegaye Demisse

Keyword(s):

Plant Species ◽

National Park ◽

Diversity Index ◽

Feeding Preference ◽

Southern Ethiopia ◽

Habitat Association ◽

Plant Parts ◽

Food Items ◽

Wiener Diversity Index ◽

Significant Difference

This study investigated feeding preference and habitat association of waterbucks in Nechisar National Park from November 2016 to August 2017 by total count and direct observation methods. From this survey, 20 plant species were observed to be the food items consumed by waterbucks. Waterbucks were mostly grazers than browser. The plant species consumed by waterbucks was highly significant between seasons (χ2 = 121.34, df = 1, p < 0.05 ). Out of 20 total plant species consumed, annual grass (11.5%), Leersia virginica (8.4%), and Cynodon dactylon (8.4%) were the most frequently consumed food items, but Tamarindus indica (2.9%), Balanites aegyptica (3.3%), and Acacia polycantha (2.36%) were the least consumed food items. There was significant difference between plant species consumed during both seasons (χ2 = 177.67, df = 19, p < 0.05 ). The Shannon–Wiener diversity index result revealed that there were different varieties of food items for waterbucks in dry season (H’ = 2.9) than in wet season (H’ = 2.6). Young leaves comprised the largest proportion of plant parts consumed by waterbucks compared to others. There was a highly significant difference in feeding plant parts in both seasons (χ2 = 88.5, df = 7, p < 0.05 ). Waterbucks spent more time on feeding in the morning and late afternoon during both seasons. The total number of waterbucks in each habitat varied due to food availability in different seasons. Different conservation measures should be taken against waterbuck reduction and create appropriate environment for waterbuck.

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Alien Plants are Less Palatable to Pest Herbivores than Native Plants: Evidence from Cafeteria Experiments in Search of Suitable Plant Species to Restore Degraded Ecosystems

Ekológia (Bratislava) ◽

10.2478/eko-2021-0003 ◽

2021 ◽

Vol 40 (1) ◽

pp. 16-24

Author(s):

Mouldi Gamoun ◽

Mounir Louhaichi

Keyword(s):

Alien Species ◽

Plant Species ◽

Native Species ◽

Native Plants ◽

Feeding Preference ◽

Alien Plants ◽

General Tendency ◽

Native Plant ◽

Evolutionary Potential ◽

Wide Range

Abstract Nowadays, the ecology and evolutionary potential of alien species are the subjects of several ecological studies. The goal of this study was to compare the feeding preference of Arion ater on seedlings and leaves of alien and native plant species. Seedlings of three native species and one alien species were offered to slugs individually and in combination. Afterward, leaf discs from the native and alien species collected from the same source site of slug’s habitat were offered individually and in combination for slugs. When the new plant emerges, it constitutes a generous source of potential food and slugs would even feed on seedlings, which are not particularly palatable. Nonetheless, when given a choice, slug often preferentially feeds on some food items while ignoring others. Alien plants are more resistant to herbivory than native plants. There is a general tendency for alien species to be less palatable than native species. In general, slugs may eat a wide range of seedlings that are much more attractive than mature plants of the same species. Therefore, the native herbivores were found to attack native plants and promoted alien plants. Consequently, highly unacceptable alien species such as Eucalyptus globulus may play an important role in the restoration process.

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Feeding preference of Plutella xylostella for leaves treated with plant extracts

Anais da Academia Brasileira de Ciências ◽

10.1590/0001-3765201620150236 ◽

2016 ◽

Vol 88 (3 suppl) ◽

pp. 1781-1789 ◽

Cited By ~ 4

Author(s):

IRYS F.S. COUTO ◽

MATEUS L. FUCHS ◽

FABRÍCIO F. PEREIRA ◽

MUNIR MAUAD ◽

SILVANA P.Q. SCALON ◽

...

Keyword(s):

Plant Species ◽

Plant Extracts ◽

Plutella Xylostella ◽

Feeding Preference ◽

Aqueous Extracts ◽

Mato Grosso ◽

Methanolic Extracts ◽

Botanical Extracts ◽

Negative Impacts ◽

Mato Grosso Do Sul

ABSTRACT Plutella xylostella L. is one of the main agents to cause damages to plants of Brassica genus, provoking negative impacts in cultures. The use of botanical extracts in plants protection has been related in literature, however, their use in the species analyzed in this study is not yet reported. We assessed the effect of aqueous and methanolic extracts of the species: Schinus terebinthifolius Raddi (Pink Pepper), Annona coriacea Mart. (Araticum), Duguetia furfuracea (A. St.-Hil.) Benth. & Hook. (Pindaúva do campo) and Trichilia silvatica C. DC. (Catiguá-branco), occuring in the state of Mato Grosso do Sul and whose feeding preference of P. xylostella larvae of 3rd instar. We intend to answer the following questions: (1) Are the plant species analyzed fagodeterrentes? (2) what type of extract produces the least food preferrence? To answer these questions, we treated cabbage disks with aqueous extracts stored in a refrigerator in periods of 0, 7, 14 and 21 days and the methanolic extracts were treated at concentrations of 0.5 mg/mL, 1.0 mg/mL, 2.0mg/mL. The aqueous and methanolic extracts of T. silvatica presented the lowest values of feeding preference, 0.113 and 0.06, respectively, compared to other extracts.

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Food preferences of oribi Ourebia ourebi in the Golden Gate Highlands National Park

Koedoe ◽

10.4102/koedoe.v33i1.452 ◽

1990 ◽

Vol 33 (1) ◽

Cited By ~ 6

Author(s):

B.K. Reilly ◽

G.K. Theron ◽

J. Du P. Bothma

Keyword(s):

Seasonal Variation ◽

Plant Species ◽

National Park ◽

Food Preferences ◽

Feeding Preference ◽

Golden Gate ◽

Feeding Preferences ◽

Preference Rating ◽

Plant Parts ◽

Actual Preference

During a two-year study on the ecology of oribi Ourebia ourebi (Zimmermann, 1783) in the Golden Gate Highlands National Park, plant species fed on by oribi were noted. The oribi fed on a total of 22 plant species. Feeding preference categories were assigned according to the degree of use of different plant species, based on direct observation and on a preference rating. The oribi in the Golden Gate Highlands National Park showed a seasonal variation in feeding preferences, utilising several species of forbs primarily during the summer and a marked dif-ference between per cent frequency utilisation of plant species and actual preference rating according to availability of species and for certain plant parts, e.g. for Sporobolus centrifugus.

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Diversité Et Variabilité Du Régime Alimentaire Des Éléphants Du Parc National d’Azagny (Sud - Côte d’Ivoire)

European Scientific Journal ESJ ◽

10.19044/esj.2017.v13n21p98 ◽

2017 ◽

Vol 13 (21) ◽

pp. 98

Author(s):

Kouame Djaha ◽

Gone Bi Zoro Bertin ◽

Kpangui Kouassi Bruno ◽

Koffi Bene Jean Claude ◽

Koffi Kouao Jean ◽

...

Keyword(s):

Plant Species ◽

Cote D'ivoire ◽

Côte D’Ivoire ◽

Feeding Preference ◽

Species List ◽

Cote D’Ivoire ◽

Côte D'ivoire ◽

Forest Elephants ◽

One Year ◽

Albizia Adianthifolia

In Côte d'Ivoire, Azagny National Park has a small forest elephants population, described as isolated, self-contained and whose survival depends on the diversity of local biological resources. A study was undertaken to assess the diversity of the plant species consumed and the feeding preference of this large mammal. Pedestrian surveys were carried out in the different biotopes traveled by the elephants during one year, in search of fresh and old traces of nutrition and droppings. As a result of these inventories, six organs of 282 plant species have been identified has consumed by elephant. In this plant species list, three families are the most represented: the Apocynaceae, the Euphorbiaceae and the Rubiaceae. Among the elephant diet, five species appear to be the most consumed: Aframomum melegueta (1.45%), Aframomum sceptrum (1.45%), Sacoglottis gabonensis (1.27%), Echinochloa pyramidalis (1.2%) and Albizia adianthifolia (1.2%). Considering the number and type of organs harvested from plants, the study reveals that they varied from one species to another well. In general, leaves (256 species 90.8%) and fruits (95 species or 33.7%) have emerged as the most consumed organs of elephants. In view of this diet importance in elephant survival in the park, it would be important to identify the type of species consumed seasonally and to assess their availability in each of the biotopes traveled.

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