scholarly journals Feeding ecology of blue rock pigeon (Columba livia) in the three districts of Punjab, Pakistan

2020 ◽  
Vol 80 (4) ◽  
pp. 881-890
Author(s):  
F. Batool ◽  
H. A. Khan ◽  
M. Saif-ur Rehman
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Food Item ◽  
Feeding Habits ◽  
Winter Season ◽  
Columba Livia ◽  
Food Crops ◽  
Feral Pigeon ◽  
Rock Pigeon ◽  
Foraging Movements

Abstract Present paper provides information on the feeding regimens of the two genders of the blue-rock pigeon (Columba livia Linn.) in the sampled habitats of the three districts viz. Rawalpindi, Faisalabad and Bahawalpur of the Punjab province, Pakistan. This feral pigeon, considered ubiquitous species, inhabits both the grasslands and clumped environments to establish their roosts and nests. The study explored about comparable feeding proportions from three major habitats of the pigeons which were captured with medium sized mist-nets. For Rawalpindi in the winter season, the Zea mays was one of the predominant food item (30.6%) for males, and other ranked major food contents were (26.7%, 22.4% and 20.2%), and fairly similar feeding proportions were also recorded for the females (50.4%, 33.3%, 36.4% and 23.9%) for Carthamus oxyacantha, Hordeum vulgare, Triticum aestivum and Zea mays respectively. Evidently, no significant deviations in the existing food crops for the three sites for the feral pigeon were detected, which strongly suggested that the, modes of feeding habits among the sustainable roosts and nests which were closely located to food crops, exerted negligible impacts during intermittent pigeon foraging movements in the diurnal conditions.

Ultrastructure of Plant Leaf Tissue Infected with Mite-Borne Viral-Like Pathogens

1970 ◽  
Vol 28 ◽  
pp. 178-179 ◽  
Author(s):  
O. E. Bradfute ◽  
R. E. Whitmoyer ◽  
L. R. Nault
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Electron Microscope ◽  
Hordeum Vulgare ◽  
Microscope Study ◽  
Electron Microscope Study ◽  
Leaf Tissue ◽  
Leaf Ultrastructure ◽  
Double Membrane ◽  
Aceria Tulipae

A pathogen transmitted by the eriophyid mite, Aceria tulipae, infects a number of Gramineae producing symptoms similar to wheat spot mosaic virus (1). An electron microscope study of leaf ultrastructure from systemically infected Zea mays, Hordeum vulgare, and Triticum aestivum showed the presence of ovoid, double membrane bodies (0.1 - 0.2 microns) in the cytoplasm of parenchyma, phloem and epidermis cells (Fig. 1 ).

Rock Pigeon (Columba livia)

2014 ◽  
Author(s):  
Peter E. Lowther ◽  
Richard F. Johnston
Keyword(s):  
Columba Livia ◽  
Rock Pigeon

scholarly journals Effect Using Wheat Triticum aestivum and Corn Zea mays in Broiler Diets and Sex on Specific Characteristics

2021 ◽  
Vol 761 (1) ◽  
pp. 012126
Author(s):  
S. I. Yousif ◽  
W. A. Al-Hamdani ◽  
B. H. Mousa ◽  
A. A. Y. Al-Hamdani
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays

Multivariate analyses of indigenous bread wheat (Triticum aestivum L.) landraces of Oman

2021 ◽  
pp. 483
Author(s):  
Ali Hussain Al Lawati ◽  
Saleem Kaseemsaheb Nadaf ◽  
Nadiya Abubakar Al Saady ◽  
Saleh Ali Al Hinai ◽  
Almandhar Almamari ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Bread Wheat ◽  
Multivariate Analyses ◽  
Crop Improvement ◽  
Winter Season ◽  
Principal Component ◽  
Triticum Aestivum L ◽  
Plant Parts ◽  
Improvement Programs ◽  
D Values

Oman is endowed with enormous diversity of important food crops that have global significance for food security and has ancient history of cultivation of bread wheat (Triticum aestivum L.) with its divergent landraces, which are useful in crop improvement. 55 indigenous Omani accessions conserved at the USDA were evaluated in the winter season (November to April) of the years 2017-2018 and 2018-2019 on loamy soil under sprinklers in augmented design with 5 check varieties in 5 replications following crop husbandry practices as per national recommendations using 9 quantitative (descriptors) and 6 qualitative traits (anthocyanin pigmentation on plant parts). The data on traits were subjected not only for PC values and D values after varimax rotation through Kaiser normalization in Principal Component Analysis (PCA) but also for Agglomerative Hierarchical Clustering (AHC). The results indicated that indigenous bread wheat accessions were significantly different (p>0.05) for all the quantitative traits except number of tillers. The multivariate analyses led to formation of four diverse clusters from PCA analyses corresponding to four quadrants of bi-plot graphs and three clusters from AHC analysis corresponding to main clades of dendrogram. The parents were selected from common accessions of distinct clusters in all the multivariate analyses for hybridization for improving characters of growth for higher yield or productivity with pigmentation on one or two plant parts useful for DUS test of varieties. The indigenous bread wheat landraces / accessions were genetically diverse and have potential for use in national crop improvement programs for earliness and higher grain productivity with distinct identification markers.

scholarly journals Consumo alimentar comparativo de larvas de Phytalus sanctipauli Blanch. (Coleoptera: Scarabaeidae)

1997 ◽  
Vol 26 (2) ◽  
pp. 223-228
Author(s):  
Régis S. S. dos Santos ◽  
Lúcia M. G. Diefenbach ◽  
Luiza R. Redaelli ◽  
Dirceu N. Gassen
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Avena Sativa

O consumo alimentar de larvas de 3º estádio de Phytalus sanctipauli Blanch. foi estudado em laboratório. Os insetos foram criados individualmente e alimentados com aveia (Avena sativa), milho (Zea mays) ou trigo (Triticum aestivum) ou com as três espécies juntas. A quantidade (massa seca) ingerida de raiz e semente, respectivamente, foi maior em trigo (28,5 mg), menor em aveia (16,4 mg) e intermediária no milho (22,6 mg). O consumo de folha foi semelhante em aveia (18,2 mg) e trigo (19,8 mg) e significativamente superior ao de milho (2,1 mg). Avaliando-se a plântula como um todo, o consumo de trigo foi superior tanto quando as espécies vegetais foram oferecidas isoladamente (89,8 mg) quanto em conjunto (56,9 mg). O peso fresco médio das larvas ao término da alimentação foi maior em trigo (100,2 mg) e milho (102,2 mg) do que em aveia (85,9 mg). O número médio de plantas destruído por larva foi marcadamente maior em trigo e aveia (27,4 e 24,9, respectivamente) comparado com milho (0,9).

scholarly journals Sistemas de cultivo e características do solo afetando a estabilidade de agregados

1998 ◽  
Vol 22 (2) ◽  
pp. 311-317 ◽  
Author(s):  
I. F. Silva ◽  
J. Mielniczuk
Keyword(s):  
Triticum Aestivum ◽  
Zea Mays ◽  
Glycine Max ◽  
Zea Mays L ◽  
Triticum Aestivum L ◽  
Digitaria Decumbens ◽  
Glycine Max L ◽  
Macroptilium Atropurpureum

Em um Latossolo Roxo de Santo Ângelo (RS), e em um Podzólico Vermelho-Escuro de Eldorado do Sul (RS), ambos com textura argilosa, submetidos o primeiro à exploração com cultivo convencional de trigo (Triticum aestivum L.) e soja (Glycine max L.) e sob setária (Setaria anceps L.), e o segundo à exploração com capim-pangola (Digitaria decumbens L.), siratro (Macroptilium atropurpureum L.), plantio direto com aveia (Avena bizantina L.)/milho (Zea mays L.) e área sem vegetação, foi realizado o presente trabalho durante a safra de verão (1990/1991), com o objetivo de avaliar a estabilidade e a agregação do solo sob diferentes sistemas de cultivo. Constatou-se, nessa avaliação, que as gramíneas perenes por meio do seu sistema radicular tiveram grande efeito na agregação e estabilidade dos agregados do solo e que os teores de carbono orgânico, de ferro e alumínio-oxalato, argila e grau de dispersão tiveram também efeitos na agregação do solo, porém insuficientes para explicar as variações entre o diâmetro médio ponderado dos agregados sob os diferentes sistemas de cultivo.

scholarly journals Yellow-legged Gull Larus michahellis captures and drowns a Feral Pigeon Columba livia

2016 ◽  
Vol 86 (1) ◽  
pp. 69 ◽  
Author(s):  
Alessandro Canestrelli ◽  
Fulvio Fraticelli
Keyword(s):  
Cognitive Ability ◽  
Columba Livia ◽  
Feral Pigeon ◽  
New Techniques ◽  
Small Lake ◽  
Innovative Methods ◽  
Larus Michahellis

A Yellow-legged Gull catching a Feral Pigeon, flies to a nearby small lake and kills him drowning. This behaviour can be explained or with higher cognitive ability, related with the use of innovative methods, or with a generalist behaviour that offers the opportunity to use new techniques.

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