Diving Terns
نویسندگان
چکیده
منابع مشابه
Sex - specific food choices in Whiskered Terns
individual decisions concerning the trade-off between somatic and reproductive investment (Dänhardt et al. 2011). Birds feeding chicks should deliver the most nutritious and optimally sized prey items to chicks in order to maximise chick growth (Baird 1991). How ever, whether a parent delivers prey to chicks or eats it itself, depends not only on prey value but also on the time and energy cost ...
متن کاملProtein motifs retrieval by SS terns occurrences
0167-8655/$ see front matter 2012 Elsevier B.V. A http://dx.doi.org/10.1016/j.patrec.2012.12.003 ⇑ Corresponding author. Tel.: +39 0382 985358; fax E-mail addresses: [email protected] (V uniparthenope.it (A. Ferone), [email protected] (O. uniparthenope.it (A. Petrosino). This paper describes a new approach to the analysis of protein 3D structure based on the Secondary Structure (SS) re...
متن کاملParalytic Shellfish Poisoning: Effects on Breeding Terns
-More than 70 Common Terns (Sterna hirundo) and lesser numbers of other terns and gulls were killed on 1 l-l 2 June 1978, by Paralytic Shellfish Poisoning (PSP; toxin of the dinoflagellate Gonyaulax excavata) at a breeding colony in Massachusetts. PSP toxin was detected at lethal levels in sand-launce (Ammodytes americanus), the terns’ principal food. Almost all terns that died were females in ...
متن کاملBrood Size and Food Provisioning in Common Terns Sterna Hirundo and Arctic Terns S. Paradisaea: Consequences for Chick Growth
Food provisioning rates and chick growth rates of Common Terns Sterna hirundo and Arctic Terns S. paradisaea were studied in Northeast England. Adult terns ofboth species fed large broods more frequently than those containing fewer chicks. Energy supply per nestling declined slightly as brood size increased and as a result, chicks in large broods developed body mass at a slightly lower rate tha...
متن کاملDiving mammals.
The ability of diving mammals to forage at depth on a breath hold of air is dependent on gas exchange, both in the lung and in peripheral tissues. Anatomical and physiological adaptations in the respiratory system, cardiovascular system, blood and peripheral tissues contribute to the remarkable breath-hold capacities of these animals. The end results of these adaptations include efficient venti...
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ژورنال
عنوان ژورنال: Nature
سال: 1973
ISSN: 0028-0836,1476-4687
DOI: 10.1038/245397e0