"Gregariousness" behavior of little grebe Tachybaptus ruficollis (Pallas, 1764) at Morocco.
Journal Title: Journal of Research in Biology - Year 2015, Vol 5, Issue 3
Abstract
This study aims to identify the "gregariousness" behavior of the little grebe Tachybaptus ruficollis at Morocco from 2013 to 2014 in the hilly reservoir of Hassar dam in the province of Mohammedia at Morocco. The number of species varied to a great extent between January 2013 and August 2014. The population in 2013 was affected by high mortality probably due to intoxication after the release of highly polluted wastewater from the city of Mediouna, the village of Sidi Hejjaj and other villages present in the upstream of the dam reservoir. We recorded 1492 individuals in January 2013 (the highest density of the species in Morocco) and the number fell sharply after then, and start increasing in May 2014 to reach 577 individuals in August 2014. The population living in an area not exceeding to 1 km2 manifest gregariousness behavior consistent with the groups that can reach 180 individuals at some instances. During breeding, the species showed no gregarious behavior and are seen only as pairs. These singles are usually remote and hounded by couples
Authors and Affiliations
Abdeslam Rihane
Keywords
Related Articles
- EP ID EP567431
- DOI -
- Views 64
- Downloads 0
Purification of phenylalanine ammonia lyase (PAL) and peroxidase (POX) enzymes obtained from lucerne (Medicago sativa L. cv. Vertus) following inoculation with Verticillium albo-atrum
Phenylalanine ammonia lyase (EC 4.3.1.24, PAL) and peroxidase (EC 1.11.1.7, POX) enzyme activities were determined in seedlings of lucerne (Medicago sativa L. cv. Vertus) after the inoculation of V. albo-atrum (V2, a wea...
Laboratory toxicity evaluation of Diflubenzuron, a chitin-synthesis inhibitor, against Anopheles darlingi (Diptera, Culicidae)
We evaluated Diflubenzuron toxicity against larvae and pupae of Anopheles darlingi. A series of bioassays were developed to assess the lethal concentrations LC50 and LC90 to larvae after two exposure periods (24 and 48 h...
Identification of Animal Pasteurellosis by PCR Assay
Diagnosis of pasteurellosis has become difficult, as there are five different capsular types and 16 somatic types. Molecular techniques like PCR are adapted nowadays for rapid and accurate diagnosis in early stage of the...
Environmental conditions and animal’s welfare from the perspective of animal science
The aim of this review is studying environmental conditions and animal welfare from the perspective of animal science. The welfare of animals is the quality of life that the animal thinks to it. Animals develop cognitive...
The use of purple yam (Dioscorea trifida) as a health-promoting ingredient in bread making
The use of purple yam (Dioscorea trifida) was evaluated as possible health-promoting ingredient in bread making in the state of Amazonas, Brazil. The centesimal composition, energy, and antioxidant activity of purple yam...