Foraging ecology of masked boobies (Sula dactylatra) in the world’s largest “oceanic desert”
نویسندگان
چکیده
منابع مشابه
Resource partitioning by species but not sex in sympatric boobies in the central Pacific Ocean
Sympatric species with similar ecological requirements and differences in body size would be expected to partition resources to facilitate coexistence. For sexually dimorphic species, we may expect resource partitioning by gender as well as by species identity. However, it is difficult to document species and sexual resource partitioning in marine ecosystems, given the intractability of these s...
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During breeding, foraging marine birds are under biological, geographic, and temporal constraints. These contraints require foraging birds to efficiently process environmental cues derived from physical habitat features that occur at nested spatial scales. Mesoscale oceanography in particular may change rapidly within and between breeding seasons, and findings from well-studied systems that rel...
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The pantropical red-footed booby Sula sula is one of the most polymorphic seabirds. In the Indian Ocean most extant colonies hold white morph adults except on Europa Island (southern Mozambique Channel), where adults are of the white-tailed brown morph and on Tromelin Island (western Indian Ocean), where one-third of the birds are of the white-tailed brown morph and two-thirds are of the white ...
متن کاملForaging ecology of oceanic-stage loggerhead turtles Caretta caretta
We examined stomach contents (n = 12) and fecal samples (n = 4) in the first quantitative analysis of diet composition of oceanic-stage loggerhead turtles Caretta caretta from the North Atlantic Ocean. We found that loggerheads from the Azores are opportunistic carnivores that feed upon a variety of oceanic and pelagic organisms; our results also show that they exploited novel food resources, s...
متن کاملThe genetic basis of the plumage polymorphism in red-footed boobies (Sula sula): a melanocortin-1 receptor (MC1R) analysis.
The red-footed booby (Sula sula) is considered one of the most polymorphic seabirds, with 3 recognized major adult plumage types: 1) white, 2) white-tailed brown, and 3) brown and several degrees of intermediates. Here we show that the white/melanic polymorphism observed in this species is perfectly associated with 2 point substitutions, Val85Met and His207Arg, at the melanocortin-1 receptor (M...
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ژورنال
عنوان ژورنال: Marine Biology
سال: 2020
ISSN: 0025-3162,1432-1793
DOI: 10.1007/s00227-020-03700-2