Is kin cooperation going on undetected in marine bird colonies?

2009 ◽  
Vol 64 (4) ◽  
pp. 647-655 ◽  
Author(s):  
Hugh Drummond ◽  
Roxana Torres ◽  
Cristina Rodríguez Juarez ◽  
Sin-Yeon Kim
Keyword(s):  
Marine Bird ◽  
Bird Colonies

How Important Are Bird Colonies as Information Centers?

The Auk ◽  
1982 ◽  
Vol 99 (1) ◽  
pp. 31-40 ◽  
Author(s):  
Range D. Bayer
Keyword(s):  
Bird Colonies

Variably male-biased sex ratio in a marine bird with females larger than males

Oecologia ◽  
1999 ◽  
Vol 118 (1) ◽  
pp. 16-22 ◽  
Author(s):  
Roxana Torres ◽  
Hugh Drummond
Keyword(s):  
Sex Ratio ◽  
Marine Bird ◽  
Biased Sex Ratio

Environmental and life-history factors influence inter-colony multidimensional niche metrics of a breeding Arctic marine bird

2021 ◽  
pp. 148935
Author(s):  
Reyd A. Smith ◽  
David J. Yurkowski ◽  
Kyle J.L. Parkinson ◽  
Jérôme Fort ◽  
Holly L. Hennin ◽  
...  
Keyword(s):  
Life History ◽  
Marine Bird ◽  
Niche Metrics

scholarly journals The Brazilian research contribution to knowledge of the plant communities from Antarctic ice free areas

2013 ◽  
Vol 85 (3) ◽  
pp. 923-935 ◽  
Author(s):  
ANTONIO B. PEREIRA ◽  
JAIR PUTZKE
Keyword(s):  
Plant Communities ◽  
Soil Microbial Communities ◽  
Field Work ◽  
Plant Biology ◽  
Biotechnological Applications ◽  
King George Island ◽  
Plant Taxonomy ◽  
Soil Microbial ◽  
Bird Colonies ◽  
Elephant Island

This work aims to summarize the results of research carried out by Brazilian researchers on the plant communities of Antarctic ice free areas during the last twenty five years. Since 1988 field work has been carried out in Elephant Island, King George Island, Nelson Island and Deception Island. During this period six papers were published on the chemistry of lichens, seven papers on plant taxonomy, five papers on plant biology, two studies on UVB photoprotection, three studies about the relationships between plant communities and bird colonies and eleven papers on plant communities from ice free areas. At the present, Brazilian botanists are researching the plant communities of Antarctic ice free areas in order to understand their relationships to soil microbial communities, the biodiversity, the distribution of the plants populations and their relationship with birds colonies. In addition to these activities, a group of Brazilian researchers are undertaking studies related to Antarctic plant genetic diversity, plant chemistry and their biotechnological applications.

scholarly journals A River Otter's, Lontra canadensis, Capture of a Double-crested Cormorant, Phalacrocorax auritus, in British Columbia's Gulf Island Waters

2007 ◽  
Vol 121 (3) ◽  
pp. 325
Author(s):  
Michael H. H. Price ◽  
Clare E. Aries
Keyword(s):  
Lontra Canadensis ◽  
Phalacrocorax Auritus ◽  
River Otter ◽  
Freshwater Lakes ◽  
Marine Bird ◽  
River Otters

Direct and apparent predation events by River Otters (Lontra canadensis) on birds have been recorded on marine islands and freshwater lakes. We add to this the first known observation of a River Otter capturing a marine bird on the ocean.

scholarly journals Cormorant pellets as a tool for the knowledge of parasite-intermediate host associations and nematode diversity in the environment

2019 ◽  
Vol 56 (4) ◽  
pp. 296-302 ◽  
Author(s):  
L. Garbin ◽  
J. I. Diaz ◽  
A. Morgenthaler ◽  
A. Millones ◽  
L. Kuba ◽  
...  
Keyword(s):  
Prey Item ◽  
Feeding Habits ◽  
Paratenic Host ◽  
Intermediate Hosts ◽  
Good Tool ◽  
Larval Stages ◽  
Nematode Diversity ◽  
Bird Colonies ◽  
Prey Items ◽  
Host Associations

SummaryAnisakids are usually acquired through the diet. Cormorant pellets are useful to detect both parasite larval stages, and prey items which could act as intermediate hosts in the environment. The current study provides information about the feeding habits of both birds and mammals, and the diversity of parasites circulating in the environment. The objective of the study was to identify Anisakidae larvae and prey items in pellets from the Imperial shag Phalacrocorax atriceps and the Red-legged cormorant P. gaimardi, suggesting possible parasite–prey associations. A total of 92 P. atriceps’ and 82 P. gaimardi’s pellets were collected from both Punta León, and Isla Elena bird colonies, respectively, during the period from 2006 to 2010. Pellets were preserved in ethanol and hard prey item remnants, and nematode larvae were studied using standard techniques. Prey item occurrence, nematode prevalence, and mean intensity were calculated. A correspondence analysis was performed to evaluate the larvae-prey association. Contracaecum spp., Pseudoterranova spp,, Anisakis spp., Terranova spp., and Hysterothylacium spp. third-stage larvae (L3) were identifi ed in pellets. Pseudoterranova spp. and Anisakis spp. L3 predominated in the environment of Punta León, whereas Contracaecum spp. and Hysterothylacium spp. L3 predominated in the Puerto Deseado area. The highest larvae-prey association was that of Contracaecum spp. L3 with Engraulis anchoita, followed by with Odontestes sp. in P. atriceps’ pellets. Contracaecum spp. L3 were significantly related to both sprats, Sprattus fueguensis and Ramnogaster arcuatta, in P. gaimardi’s pellets. It was verifi ed that E. anchovy is the main gateway of Contracaecum spp. L3 in P. atriceps. Odonthestes sp. might act as an intermediate/paratenic host of Contracaecum spp. L3 in the area. Both sprats might play a role as intermediate/paratenic hosts of C. australe, being the main gateway into P. gaimardi in the area. Thus, pellet analysis can be postulated as a good tool for indicating parasite-host associations between anisakids, and the prey items which act as intermediate hosts.

scholarly journals Density dependence and marine bird populations: are wind farm assessments precautionary?

2016 ◽  
Vol 54 (5) ◽  
pp. 1406-1414 ◽  
Author(s):  
Cat Horswill ◽  
Susan H. O'Brien ◽  
Robert A. Robinson
Keyword(s):  
Density Dependence ◽  
Wind Farm ◽  
Marine Bird ◽  
Bird Populations
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