Aims: The objective of this study was to determine the plasma concentration of butorphanol injected intravenously at 4mg/kg dose in Northern Royal Albatross and compare the pharmacokinetic parameters with that of broiler chickens. Methods: The plasma concentration of butorphanol was analysed by High Performance Liquid Chromatography. The pharmacokinetic parameters were calculated by non-compart...

The first consignment of crinoids received from the United States Fisheries steamer Albatross, now engaged in work among the Philippine Islands, proves to be a collection of more than usual interest. Not only does it contain a remarkably large number of new and interesting forms, but many species, heretofore known only from single more or less imperfect specimens, are represented. The littoral ...

Unrelated same-sex individuals pairing together and cooperating to raise offspring over many years is a rare occurrence in the animal kingdom. Cooperative breeding, in which animals help raise offspring that are not their own, is often attributed to kin selection when individuals are related, or altruism when individuals are unrelated. Here we document long-term pairing of unrelated female Lays...

Same-sex behavior in animals fascinates scientists as well as laypeople, partly because of implications about sexual orientation in humans. After all, if animals engage in homosexuality, can it be dismissed as 'unnatural'? A recent paper by Young and colleagues documents long-term female pairs in >30% of Laysan albatross on the Hawaiian island of Oahu. The unrelated females bred successfully, c...

In Germanic languages, compound words are very common and very productive. There are compound words which are bound and lexicalized and loose their semantic content when split (e.g. albatross or jordgubbe). This category will be referred to as opaque compounds. The opposite of the opaque compounds are the productive compounds, whose parts keep their semantic value when separated (Bjarnadóttir 2...

Feather mites of the family Avenzoariidae (Acari: Astigmata: Analgoidea) are recorded for the first time in Saudi Arabia. A new avenzoariid species, Zachvatkinia (Zachvatkinia) repressae sp. n. (Avenzoariidae: Bonnetellinae), is described from the White-cheeked Tern, Sterna repressa Hartert, 1916 (Charadriiformes: Stemidae). The new species belongs to the sternae group and is closely related to...

We introduce a simple ecological model describing the spatial organization of two interacting populations whose individuals are indifferent to conspecifics and avoid the proximity to heterospecifics. At small population densities Φ a nontrivial structure is observed where clusters of individuals arrange into a rhomboidal bipartite network with an average degree of 4. For Φ → 0 the length scale,...