scholarly journals Duplicating Nature and Elements of Subjectivity in The Ethology of the Greylag Goose

Isis ◽  
2021 ◽  
Vol 112 (2) ◽  
pp. 326-334
Author(s):  
Juliane Scholz
Keyword(s):  
Greylag Goose

Greylag Goose (Anser anser Linnaeus, 1758).

2020 ◽  
pp. 213-222
Author(s):  
Lorinda A. Hart ◽  
Colleen T. Downs
Keyword(s):  
Environmental Impact ◽  
Anser Anser ◽  
Greylag Goose

Abstract This chapter describes the taxonomic nomenclature, distribution, morphology, diet, reproduction, behaviour, habitats, pathways of invasion, environmental impact, control and relevance to humans of the greylag goose (Anser anser).

scholarly journals Serial agonistic attacks by greylag goose families, Anser anser, against the same opponent

2009 ◽  
Vol 77 (5) ◽  
pp. 1211-1216 ◽  
Author(s):  
Isabella B.R. Scheiber ◽  
Kurt Kotrschal ◽  
Brigitte M. Weiß
Keyword(s):  
Anser Anser ◽  
Greylag Goose

scholarly journals Conservation genetics of a resident population of Greylag Goose (Anser anser) at the southernmost limit of the species’ distribution in Europe

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Anastasios Bounas ◽  
Giorgos Catsadorakis ◽  
Annita Logotheti ◽  
Berend Voslamber ◽  
Antonios Magoulas ◽  
...  
Keyword(s):  
Conservation Genetics ◽  
Species Distribution ◽  
Anser Anser ◽  
Resident Population ◽  
Greylag Goose ◽  
Distribution In Europe

scholarly journals Dramatic shifts in intestinal fungal community between wintering Hooded Crane and Domestic Goose

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Xingjia Xiang ◽  
Lele Jin ◽  
Zhuqing Yang ◽  
Nazhong Zhang ◽  
Feng Zhang
Keyword(s):  
Community Structure ◽  
Fungal Community ◽  
Food Resource ◽  
Wild Birds ◽  
Human Beings ◽  
Anser Anser ◽  
Fungal Community Structure ◽  
Hooded Crane ◽  
Intestinal Pathogens ◽  
Greylag Goose

Abstract Background The intestinal microbiota play remarkable roles in maintaining the health of their hosts. Recent studies focused on gut bacterial diversity in birds and poultry, with little information about the ecological functions of their gut fungal community. Methods The high-throughput sequencing was applied to compare intestinal fungal community structure between Hooded Crane (Grus monacha) and Domestic Goose (Anser anser domesticus), and infer the potential pathogens of each species at Shengjin Lake of China. Results Intestinal fungal alpha diversity was higher in Hooded Crane than Greylag Goose (Anser anser). Gut fungal community composition showed dramatic shifts between the two species. Hooded Cranes mainly eat Vallisneria natans and Potamogeton malaianus, while artificial hurl food (i.e., paddy) was the main food resource for Domestic Geese, suggesting that the variations in fungal community might be induced by different diets between the two hosts. Two enriched genera (i.e., Acremonium and Rhodotorula) which could increase host’s digestion were detected in guts of Hooded Cranes. In addition, there were 42 pathogenic amplicon sequence variants (ASVs), 17% of which shared in Hooded Crane and Greylag Goose. The Hooded Crane had higher gut fungal pathogenic diversity and abundance relative to Greylag Goose. Conclusions The study demonstrated that divergence in intestinal fungal community structure might be induced by different diets between wintering Hooded Crane and Domestic Goose. Hooded Crane might rely more on their gut fungal taxa to acquire nutrients from indigestible food resources. Our study also implied that more research should focus on intestinal pathogens in wild birds and domestic poultry, as they might increase risk of disease in other animals, even human beings. The degree of cross infection in pathogens among wild birds and sympatric poultry should be clearly verified in future study.

scholarly journals Adoption as a gosling strategy to obtain better parental care? Experimental evidence for gosling choice and age-dependency of adoption in greylag geese

Behaviour ◽  
2005 ◽  
Vol 142 (11-12) ◽  
pp. 1515-1533 ◽  
Author(s):  
Jan Komdeur ◽  
Ellen Kalmbach ◽  
Pascal van der Aa
Keyword(s):  
Parental Care ◽  
Individual Recognition ◽  
Alloparental Care ◽  
Costs And Benefits ◽  
Generational Conflict ◽  
Anser Anser ◽  
State Dependent ◽  
Greylag Goose ◽  
Large Brood ◽  
Greylag Geese

AbstractAdoptions of unrelated young by successful breeders are a form of alloparental care which has been observed in many species of geese. Depending on costs and benefits to the parents, adoptions might represent an inter-generational conflict or a mutually beneficial strategy. Although most studies of wild populations suggest benefits of large brood sizes, incidental observations mostly report aggressive behaviour of parents towards lone goslings. No studies have investigated mechanisms and behaviour during adoptions in order to test whether adoptions are driven by parents or goslings. To test whether goslings might use adoption as a strategy to obtain better parental care, we carried out an experiment where lone greylag goose (Anser anser) goslings could choose between a dominant and a subordinate foster family. In a second experiment we also tested whether adoption was age-dependent. Except for one case, all lone goslings (N = 16) chose the dominant family. Parents showed very little aggression towards lone goslings at three days after hatch, but aggression increased until 9 days and remained high thereafter. At the same time as aggression increased, the chance of successful adoption decreased. In the first five weeks of life, goslings which had been adopted were no further away from parents than original goslings during grazing. These results show that goslings might choose foster families according to dominance. The fact that with increasing gosling age parents are less willing to adopt could be due to improved individual recognition and reflect decreasing benefits of gaining an additional family member. More detailed studies on state-dependent costs and benefits of adoptions are required to determine whether adoptions in geese represent conflict or mutualism, and why this changes with gosling age.

scholarly journals A white feathered area on the forehead is more common in hybrids of Greylag Goose Anser anser and Greater Canada Goose Branta canadensis than in the parent species

Ornis Svecica ◽  
2011 ◽  
Vol 21 (1) ◽  
pp. 37-44
Author(s):  
C G Gustavsson
Keyword(s):  
Quantitative Comparison ◽  
Branta Canadensis ◽  
Canada Goose ◽  
Canada Geese ◽  
Parent Species ◽  
Anser Anser ◽  
White Area ◽  
Greylag Goose ◽  
Greylag Geese

This study evaluated prevalence and extent of white areas on heads of Greylag Goose × Greater Canada Goose hybrids. A white area which bordered the bill and then to various degrees extended over the forehead was found in 17 out of 20 hybrids. This was significantly more common in the hybrids than in the parent species. The white areas in the hybrids were also significantly larger than in those 82 out of 191 adult Greylag Geese which had some amount of white area. There were too few Greater Canada Geese with a white area outside the normal pale cheek patch to make a meaningful similar quantitative comparison also with them. No white area was seen in the three presumed 1st Calendar Year (CY) hybrids but when two of them were seen again in September of the 2nd CY there were some pale feathers that were interpreted as the beginning of white areas. The white areas in hybrids are therefore regarded to be adult features which like in several pure Anser species begin to develop during the 2nd CY.

scholarly journals Percutaneous Endoscopic Retrieval of Gizzard Foreign Body in a Goose Using an Operative Telescope

2017 ◽  
Vol 45 ◽  
pp. 4
Author(s):  
Pedro Paulo Maia Teixeira ◽  
Felipe Pereira Farias da Câmara Barros ◽  
Luisa Pucci Bueno Borges ◽  
Aline Eyko Kawanami ◽  
Marco Augusto Machado Silva ◽  
...  
Keyword(s):  
Foreign Body ◽  
Minimally Invasive ◽  
Sex Determination ◽  
Digestive Tract ◽  
Foreign Bodies ◽  
Surgical Approaches ◽  
Invasive Approach ◽  
Rigid Endoscopy ◽  
Working Length ◽  
Greylag Goose

Background: Foreign bodies are most commonly diagnosed in stomach (proventriculus and gizzard) of galliformes birds and waterfowl. Endoscopyis routinely used to assess birds’ respiratory, gastrointestinal and urogenital tracts. Endosurgeryis also used for sex determination and intra-coelomaticorgan biopsy. Benefits of endoscopic approaches are widely reported in birds. Conventional surgical approaches are far more invasive and risky for those patients. Thus, the purpose of this study was to describe a successful case of gizzard foreign body removal in a greylag goose (Anseranser), using a rigid endoscopic approach through a minimally invasive percutaneous access. Case: A 2-year-old female greylag goose, weighting 3,116 g, was referred to a Veterinary Teaching Hospital presenting apathy and anorexia for at least 24 h. The results on hematologic assessment were within normal range for the species. Radiographic examination indicated presence of radiopaque content, resembling gizzard sediment. Thus, the patient undergone to endoscopy for examination and aspiration of the content. The goose was fasted for 6 h. Anesthesia was induced by face mask and maintained by endotracheal tube, using isoflurane vaporized in 100% oxygen. The patient was positionedin the lateral recumbence. The patient’s neck was longer than the working length of the rigid endoscope. Thus, the telescope was inserted into the esophagus following a small distal esophagotomy, carried out on the caudal third of the neck. A 0º 10-mm operative rigid telescope, with a 6-mm working channel, and a 5-mm diameter and 42-cm in length laparoscopic Babcock forceps were used. The endoscope was inserted through the esophagotomy up to the ventricle level. Sand sediments and stones were viewed. The stones were grasped and retrieved, and the sediments were rinsed with normal saline solution and aspirated with a suction cannula through the working channel of the telescope. Inspection following sediment and foreign body retrieval revealed moderate inflammation of the gizzard mucosa. Total procedure time was 24 min. The patient recovered uneventfully and was discharged following 72 h. Discussion: Rigid endoscopy provided accurate visualization of the thoracic esophagus, proventriculus and gizzard. In general, endosurgery is usually employed for sex determination in birds. It is also useful to access digestive tract using rigid endoscopy, in order to remove foreign body. Such minimally approach reduces postoperative morbidity, which is usually seen following conventional surgical approaches. This technique has been used for removal of foreign body in the digestive tract of several species. Foreign bodies found within crop should require ingluviotomy. However, could be easily removed by endoscopy. If the foreign body is within the proventriculus or gizzard, rigid endoscopy may be useful, as celiotomy could cause morbidity. The small esophagotomy access at the base of the neck was essential for the procedure. In short-necked birds, a 30º Trendelenburg positioning provides more caudal access to the digestive tract. In this case, such positioning was unnecessary. In conclusion, the use of an operative telescope provided accurate retrieval of foreign bodies and drainage of sediments within the digestive tract. Moreover, it can be used as a minimally invasive approach to foreign bodies in the esophagus, crop or stomach (esophagus and gizzard) of geese.

Sign in / Sign up

Export Citation Format

Share Document