Brown Booby (Sula leucogaster)

2002 ◽  
Author(s):  
Elizabeth A. Schreiber ◽  
R. L. Norton
Keyword(s):  
Sula Leucogaster

Brown Booby (Sula leucogaster)

2002 ◽  
Author(s):  
Elizabeth A. Schreiber ◽  
R. L. Norton
Keyword(s):  
Sula Leucogaster

Sexual segregation in tropical seabirds: drivers of sex-specific foraging in the Brown Booby Sula leucogaster

2017 ◽  
Vol 159 (2) ◽  
pp. 425-437 ◽  
Author(s):  
Mark G. R. Miller ◽  
Fabiola R. O. Silva ◽  
Gabriel E. Machovsky-Capuska ◽  
Bradley C. Congdon
Keyword(s):  
Sexual Segregation ◽  
Sula Leucogaster

scholarly journals Osteology of the feeding apparatus of Magnificent Frigatebird Fregata magnificens and Brown Booby Sula leucogaster (Aves: Suliformes)

2017 ◽  
Vol 57 (20) ◽  
pp. 265 ◽  
Author(s):  
Caio José Carlos ◽  
Jéssica Guimarães Alvarenga ◽  
Mariana Scain Mazzochi
Keyword(s):  
Water Surface ◽  
Water Resistance ◽  
Feeding Habits ◽  
Broad Area ◽  
Anterior Neck ◽  
Jaw Movements ◽  
Feeding Biology ◽  
Flying Fish ◽  
Sula Leucogaster ◽  
External Forces

In this paper, we describe the skulls of Magnificent Frigatebird Fregata magnificens (Fregatidae) and Brown Booby (Sulidae) Sula leucogaster, with focus on the structures associated with the Musculi mandibulae. We discuss the results in the context of the feeding biology of the two species, which feed mainly on flying fish and squids. Frigatebirds capture prey from just above, or just below, the water surface in flight. The hook-shaped Apex maxillae in F. magnificens can be viewed as an adaptation for grasping prey from near the water surface. Boobies catch prey by plunging; thus, the dorsoventrally flattened skull and conical bill of S. leucogaster may reduce water resistance when it dives, or swims underwater. The bill is long in both species, such that it is on average 70% of the whole skull length in F. magnificens and 60% in S. leucogaster. Consequently, the Mm. mandibulae in the two species are more posteriorly positioned relative to the Apex rostri. This results in low mechanical advantage for the mandible opening-closing lever, indicating adaptations for a fast, rather than a strong, bite. Fast-moving mandibles would be advantageous for ‘mandibulating’ prey while swallowing. The Fossa musculorum temporalium and the Palatum osseum in both species provide a broad area for origins of the Musculus adductor mandibulae externus (all parts) and the Musculus pterygoideus. The Processus orbitalis quadrati is longer and thicker in F. magnificens than in S. leucogaster, and so is the Musculus pseudotemporalis profundus. We suggest that Mm. adductores mandibulae are relatively well developed in the two species; therefore, their mandibulae are still probably capable of a powerful adduction. In both species there is a mechanisms that contribute to protect the jaws from disarticulation and damage. Such mechanism involves the incorporation of a ‘flange-like’ Crista intercotylare on the Margo medialis cotylae medialis fossae articularis quadratica that grips the Condylus medialis quadrati. In S. leucogaster, the retractor-stop ‘notch’ formed by Ossa lacrimale et nasale also serves to protect the jaws against sudden external forces when birds are diving or swimming underwater for prey. A more detailed hypothesis for the jaw movements and strength in F. magnificens and in S. leucogaster and their relation with feeding habits should necessarily incorporate data on the jaw and anterior neck musculatures.

Incidence of anthropogenic material in Sula leucogaster nests in a distant archipelago of Brazil

2020 ◽  
Vol 151 ◽  
pp. 110815 ◽  
Author(s):  
Renata Brentano ◽  
Antônio Coimbra de Brum ◽  
Rosalinda Carmela Montone ◽  
Maria Virginia Petry
Keyword(s):  
Sula Leucogaster

The development of activity ranges in juvenile Brown Boobies Sula leucogaster

Ibis ◽  
2011 ◽  
Vol 153 (3) ◽  
pp. 611-615 ◽  
Author(s):  
HIROYOSHI KOHNO ◽  
KEN YODA
Keyword(s):  
Sula Leucogaster

Trace elements in feathers and eggshells of brown booby Sula leucogaster in the Marine National Park of Currais Islands, Brazil

2017 ◽  
Vol 189 (10) ◽  
Author(s):  
Natiely Natalyane Dolci ◽  
Fabian Sá ◽  
Eunice da Costa Machado ◽  
Ricardo Krul ◽  
Renato Rodrigues Neto
Keyword(s):  
Trace Elements ◽  
National Park ◽  
Sula Leucogaster

Breeding Phenology and Chick Growth in the Brown Booby Sula leucogaster (Sulidae) on Nakanokamishima, Japan

2018 ◽  
Vol 17 (1) ◽  
pp. 87-93
Author(s):  
Hiroyoshi Kohno ◽  
Takashi Yamamoto ◽  
Akira Mizutani ◽  
Miku Murakoshi ◽  
Ken Yoda
Keyword(s):  
Breeding Phenology ◽  
Chick Growth ◽  
Sula Leucogaster
Sign in / Sign up

Export Citation Format

Share Document