Tag: all of Phalacrocorax

ASPECTS OF THE BREEDING BIOLOGY OF THE NEOTROPIC CORMORANT PHALACROCORAX OLIVACEUS AT GOLFO SAN JORGE, ARGENTINA

Neotropic Cormorant (Phalacrocorax brasilianus) Science Article 1 abstract We studied the breeding biology of Neotropic Cormorants Phalacrocorax olivaceus at Golfo San Jorge, Argentina,during 1999. A total of 104 nest platforms with signs of occupation was counted, at 66 (63.5%) of whicheggs were laid. Nests were built on top of medium to large bushes located up […]

Contracaecum rudolphii Hartwich (Nematoda, Anisakidae) from the Neotropical Cormorant, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in southern Brazil

Neotropic Cormorant (Phalacrocorax brasilianus) Science Article 3 abstract The present report is part of a larger study on the helminth fauna of Neotropical Cormorants,Phalacrocorax brasilianus (Gmelin, 1789) in Brazil, particularly, in the southernmost State of Rio Grande do Sul. Thenematodes which were found loose in the proventriculus/ventriculus or in groups of adults of different ages […]

Primeiro registro de Syncuaria squamata (Linstow) (Nematoda, Acuariidae) embiguas, Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) no Brasil

Neotropic Cormorant (Phalacrocorax brasilianus) Science Article 4 abstract First record of Syncuaria squamata (Linstow) (Nematoda, Acuariidae) in Neotropical cormorants Phalacrocorax brasilianus (Gmelin) (Aves, Phalacrocoracidae) in Brazil. The nematodes of the genus Syncuaria Gilbert, 1927 are parasites of birds of the orders Pelecaniformes, Ciconiiformes, and Podicipediformes. Eleven species are considered valid in this genus, however, two […]

Ecological Functions and Economic Value of the Neotropic Cormorant (Phalacrocorax brasilianus) in Los Olivitos Estuary, Venezuela

Neotropic Cormorant (Phalacrocorax brasilianus) Science Article 2 abstract We determined the ecological function and economic value of a colony of piscivorous Neotropic Cormorants at the Los Olivitos Wildlife Refuge and Fisheries Reserve (WRFR), Lake Maracaibo, Venezuela. Colony size increased from 17,000 to approximately 40,000 in two years. Lake Maracaibo supports one of the most productive […]

Effects of distance to wintering area on arrival date and breeding performance in Great Cormorants Phalacrocorax carbo

Great Cormorant (Phalacrocorax carbo) Science Article 33 abstract Great Cormorants Phalacrocorax carbo sinensis breeding in the same colony often vary markedly in where they winter and in their date of arrival. The main aim of this study was to explore whether date of arrival, fledgling production and lifetime reproductive success were related to the distance […]

Impact of contaminants on the breeding success of the Cormorant Phalacrocorax carbo sinensis in The Netherlands.

Great Cormorant (Phalacrocorax carbo) Science Article 12 abstract In The Netherlands Cormorants reached a minimum number of breeding pairs in the mid-1960s. Since the end of the 1970s the population is increasing again, and many new and rapidly expanding colonies have been settled. However, in a colony in Dordtse Biesbosch, situated in the centre of […]

Diet of great cormorants Phalacrocorax carbosinensis wintering in Malause (South-West France)

Great Cormorant (Phalacrocorax carbo) Science Article 6 abstract The diet of cormorants roosting at Malause on the Garonne River (South-West France) was studied by analyzing pellets collected during the winter 2001- 2002.This roost held a mean of 550 cormorants between October 2001 and March 2002,making it one of the most important winter roosts in France. […]

Time and energy constraints of fishing behaviour in breeding Cormorants Phalacrocorax carbo sinensis at lake Ijsselmeer, The Netherlands.

Great Cormorant (Phalacrocorax carbo) Science Article 18 abstract Two Cormorant colonies in The Netherlands (Naardermeer and Oostvaardersplassen), exploiting the same water bodies but situated at different distances from them, were compared with respect to daily variations in exact fishing sites and corresponding variations in time budget and fish consumption. Mean flying distances between colony and […]

Daily energy expenditure of Great Cormorants Phalacrocorax carbo sinensis wintering at Lake Chiemsee, Southern Germany.

Great Cormorant (Phalacrocorax carbo) Science Article 32 abstract In the winters of 1993/94 and 1994/95 the daily energy expenditure (DEE) of Great Cormorants Phalacrocorax carbo sinensis was measured using the doubly labelled water technique (DLW). This was the first time the method has been used on a Phalacrocoracid species. DLW trials were carried out on […]

Sexual dimorphism in the Cormorant Phalacrocorax carbo sinensis: Possible implications for differences in structural size.

Great Cormorant (Phalacrocorax carbo) Science Article 27 abstract A sample of Cormorants which accidentily had been drowned in fishermen’s gear was used to study differences in morphological characters and diet between males and females. Males were significantly larger than females in all body dimensions, whereas size of juveniles and adults were the same. Discriminant analyses […]