scholarly journals Masticatory Apparatus Performance and Functional Morphology in the Extremely Large Mice from Gough Island

2019 ◽  
Vol 303 (1) ◽  
pp. 167-179 ◽  
Author(s):  
Michelle D. Parmenter ◽  
Jacob P. Nelson ◽  
Sara E. Weigel ◽  
Melissa M. Gray ◽  
Bret A. Payseur ◽  
...  
Keyword(s):  
Functional Morphology ◽  
Gough Island ◽  
Masticatory Apparatus

Comparative Functional Morphology of the Masticatory Apparatus in the Long-snouted Crocodiles

2002 ◽  
Vol 31 (4) ◽  
pp. 206-213 ◽  
Author(s):  
H. Endo ◽  
R. Aoki ◽  
H. Taru ◽  
J. Kimura ◽  
M. Sasaki ◽  
...  
Keyword(s):  
Functional Morphology ◽  
Masticatory Apparatus

The functional morphology of the anterior masticatory apparatus in tree-gouging marmosets (cebidae, primates)

2011 ◽  
Vol 272 (7) ◽  
pp. 833-849 ◽  
Author(s):  
Russell T. Hogg ◽  
Matthew J. Ravosa ◽  
Timothy M. Ryan ◽  
Christopher J. Vinyard
Keyword(s):  
Functional Morphology ◽  
Masticatory Apparatus ◽  
Tree Gouging

Functional significance of preserved color patterns of mollusks from the Gosport Sand (Eocene) of Alabama

1988 ◽  
Vol 62 (01) ◽  
pp. 83-87 ◽  
Author(s):  
Patricia H. Kelley ◽  
Charles T. Swann
Keyword(s):  
Functional Morphology ◽  
Functional Significance ◽  
Intraspecific Variability ◽  
Color Pattern ◽  
Color Patterns ◽  
Historical Factors ◽  
Life Mode ◽  
Molluscan Fauna ◽  
Excellent Preservation ◽  
Architectural Constraints

The excellent preservation of the molluscan fauna from the Gosport Sand (Eocene) at Little Stave Creek, Alabama, has made it possible to describe the preserved color patterns of 15 species. In this study the functional significance of these color patterns is tested in the context of the current adaptationist controversy. The pigment of the color pattern is thought to be a result of metabolic waste disposal. Therefore, the presence of the pigment is functional, although the patterns formed by the pigment may or may not have been adaptive. In this investigation the criteria proposed by Seilacher (1972) for testing the functionality of color patterns were applied to the Gosport fauna and the results compared with life mode as interpreted from knowledge of extant relatives and functional morphology. Using Seilacher's criteria of little ontogenetic and intraspecific variability, the color patterns appear to have been functional. However, the functional morphology studies indicate an infaunal life mode which would preclude functional color patterns. Particular color patterns are instead interpreted to be the result of historical factors, such as multiple adaptive peaks or random fixation of alleles, or of architectural constraints including possibly pleiotropy or allometry. The low variability of color patterns, which was noted within species and genera, suggests that color patterns may also serve a useful taxonomic purpose.

scholarly journals A juvenile Tristan albatross (Diomedea dabbenena) on land at the Crozet Islands

Polar Biology ◽  
2020 ◽  
Author(s):  
Alexander L. Bond ◽  
Christopher Taylor ◽  
David Kinchin-Smith ◽  
Derren Fox ◽  
Emma Witcutt ◽  
...  
Keyword(s):  
Atlantic Ocean ◽  
Cytochrome B ◽  
Adult Male ◽  
Mitochondrial Gene ◽  
Small Population ◽  
South Atlantic ◽  
South Atlantic Ocean ◽  
Tristan Da Cunha ◽  
Gough Island ◽  
Dispersal Events

AbstractAlbatrosses and other seabirds are generally highly philopatric, returning to natal colonies when they achieve breeding age. This is not universal, however, and cases of extraordinary vagrancy are rare. The Tristan Albatross (Diomedea dabbenena) breeds on Gough Island in the South Atlantic Ocean, with a small population on Inaccessible Island, Tristan da Cunha, ca 380 km away. In 2015, we observed an adult male albatross in Gonydale, Gough Island, which had been ringed on Ile de la Possession, Crozet Islands in 2009 when it was assumed to be an immature Wandering Albatross (D. exulans). We sequenced 1109 bp of the cytochrome b mitochondrial gene from this bird, and confirmed it to be a Tristan Albatross, meaning its presence on Crozet 6 years previous, and nearly 5000 km away, was a case of prospecting behaviour in a heterospecific colony. Given the challenges in identifying immature Diomedea albatrosses, such dispersal events may be more common than thought previously.

THE SEA-BIRDS OF GOUGH ISLAND

Ibis ◽  
2008 ◽  
Vol 108 (4) ◽  
pp. 632-632 ◽  
Author(s):  
W. R. P. Bourne
Keyword(s):  
Sea Birds ◽  
Gough Island

Southern Giant Petrels Macronectes giganteus depredating breeding Atlantic Yellow-nosed Albatrosses Thalassarche chlororhynchos on Gough Island

Polar Biology ◽  
2021 ◽  
Vol 44 (3) ◽  
pp. 593-599
Author(s):  
Michelle M. Risi ◽  
Christopher W. Jones ◽  
Alexis M. Osborne ◽  
Antje Steinfurth ◽  
Steffen Oppel
Keyword(s):  
Gough Island
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