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Refined techniques for the analysis of Asiatic lion Panthera leo persica scats

100%

Mukherjee S., Goyal S. P., Chellam R.

Acta Theriologica

1994

tom 39

nr 4

We improved the techniques for determining prey items based on hair characteristics from scats of the free-ranging Asiatic lion Panthera leo persica (Meyer, 1826) in terms of accuracy and time efficiency. Cuticular characteristics of hair are similar in many Indian prey species and are not species specific. A combination of hair characteristics, e.g. hair width, medullary structure, and medulla width expressed as per cent of hair width, are most useful to identify the common mammalian prey species. We found that examination of a minimum of 20 hairs/scat and 30 scats would provide a reliable estimate of the lion's diet based on the per cent occurrence of prey species hair in the scats.

The effect of urbanization on the diet composition of the Tawny owl (Strix aluco L.)

84%

Grzedzicka E., Kus K., Nabielec J.

Polish Journal of Ecology

2013

tom 61

nr 2

In recent years, developing urban areas have affected food abundance and the feeding grounds of birds. The article contains analysis of the Tawny owl’s diet during four years (2006–2009) from different types of the urbanized area: city, town (much smaller than city) and countryside – based on 356 pellets with 726 prey items. The main group of victims was Rodentia, common were also Apodemus agrarius and Apodemus sylvaticus. Other important groups in the diet were: Microtidae (especially species Microtus arvalis) and Aves. As a generalist, Tawny owl fits the diet to the actual resources in a very flexible way. The main goal of the present work was to describe the food composition variability of the Tawny owl along with the degree of urbanization. Percentages of Microtus arvalis, Micromys minutus, Talpa europaea depended on the urbanization level, while Apodemus flavicollis, Insecta and Amphibia were related to the distance to nearest city centre. The study has shown that the diet of the Tawny owl has been changing along the urbanization gradient. It confirms earlier findings on high plasticity of foraging of this species in urbanized landscape.

Ograniczanie wyników

1 Acta Theriologica

1 Polish Journal of Ecology

1 Chellam R.

1 Goyal S. P.

1 Grzedzicka E.

1 Kus K.

1 Mukherjee S.

1 Nabielec J.

1 2013

1 1994

Wyniki wyszukiwania

Refined techniques for the analysis of Asiatic lion Panthera leo persica scats

The effect of urbanization on the diet composition of the Tawny owl (Strix aluco L.)