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1.
Lyndon Perriman Dave Houston Harald Steen Edda Johannesen 《New Zealand journal of zoology.》2013,40(4):261-267
Abstract El Niño and La Niña climate perturbations alter sea currents and food availability for seabirds in many areas of the world. This changes their breeding success and mortality. Blue penguin (Eudyptula minor) breeding success is dependent upon whether one or two clutches per season are laid, and the hatching and fledging success of these clutches. This study uses six years of data from five blue penguin breeding colonies, three from Taiaroa Head, Otago Peninsula and two from Oamaru, to examine whether annual variation in breeding success correlates with El Niño/La Niña perturbations. When La Niña conditions prevailed, penguins started breeding later, and there was a lower proportion of double breeders than in El Niño and normal years. The probability of a newly hatched chick surviving to fledging was also dependent on whether large‐scale climatic conditions prevailed, whereas hatching success and overall breeding success (number of fledged chicks per breeding pair) showed no correlation with climate perturbations. 相似文献
2.
Cataglyphis
fisheri
sp. n. is described and illustrated from the United Arab Emirates, Oman and Kingdom of Saudi Arabia based on the worker caste. It belongs to the Cataglyphis
pallida-group which is recorded for the first time from the Arabian Peninsula. Cataglyphis
fisheri
sp. n. is similar to Cataglyphis
pallida Mayr, 1877 from Kazakhstan. Differential diagnosis between these two species is given and a key to the species of the Cataglyphis
pallida-group is presented. Cataglyphis
laylae Collingwood, 2011 is treated as a junior synonym of Cataglyphis
saharae Santschi, 1929. Cataglyphis
flavobrunnea Collingwood & Agosti, 1996 is redescribed and a lectotype for this species is designated. 相似文献