Data on the adult marine and migratory phases in the life cycle of the southern hemisphere lamprey, Geotria australis Gray

1979 ◽  
Vol 4 (1) ◽  
pp. 65-69 ◽  
Author(s):  
Ian C. Potter ◽  
Peter A. Prince ◽  
John P. Croxall
Keyword(s):  
Life Cycle ◽  
Southern Hemisphere ◽  
Geotria Australis

Proinsulin and Somatostatin from the Islet Organ of the Southern-Hemisphere Lamprey Geotria australis

1995 ◽  
Vol 100 (3) ◽  
pp. 413-422 ◽  
Author(s):  
J.Michael Conlon ◽  
Per F. Nielsen ◽  
John H. Youson ◽  
Ian C. Potter
Keyword(s):  
Southern Hemisphere ◽  
Geotria Australis

Puccinia buxi.

2021 ◽  
Author(s):  
Keyword(s):  
Life Cycle ◽  
North America ◽  
Southern Hemisphere ◽  
Latent Infections ◽  
Growth And Survival ◽  
The Usa

Abstract P. buxi is an autoecious microcyclic rust, completing its life cycle with two spore forms on one host. It is native to parts of Europe and Asia. An introduction to the USA, is evidence that it can be invasive with respect to other temperate countries, particularly because its hosts in the genus Buxus are often propagated vegetatively and may carry latent infections. Boxwoods have long been popular as ornamentals, therefore the rust's current absence from North America and temperate regions of the southern hemisphere is puzzling; in the earliest introductions of the host, the pathogen would probably have been ignored or overlooked. Conditions of boxwood cultivation may discourage the rust's growth and survival.

The biology of Cryptolestes pusilloides (Steel & Howe) (Coleoptera, Cucujidae), a pest of stored cereals in the Southern Hemisphere

1964 ◽  
Vol 54 (4) ◽  
pp. 649-656 ◽  
Author(s):  
L. P. Lefkovitch
Keyword(s):  
South Africa ◽  
Life Cycle ◽  
Sexual Dimorphism ◽  
North America ◽  
South America ◽  
East Africa ◽  
Southern Hemisphere ◽  
Developmental Period ◽  
Biological Information ◽  
Dry Conditions

Cryptolestes pusilloides (Steel & Howe) has, since 1944, become a regularly occurring pest of stored cereals in South America, Australia, South Africa, and to a lesser extent, East Africa, and apparently occurs also in North America as well as in Portugal (where it has recently been found on stored almonds), but has not established itself in flour mills in the U.K., notwithstanding its frequent introduction. Prior to that time it appears to have been very rare. Its life-cycle resembles that of C. ugandae Steel & Howe, and in common with that species and with C. turcicus (Grouv.), it is unable to breed successfully at relative humidities below 50 per cent. Its temperature range is 15–35°C., the optimum for development and fecundity being at about 30°C. at 90 per cent. R.H. Survival was greatest at 27·5°C. and newly formed adults weighed most at 22·5°C. In general, males weighed more than females and their developmental period under any one set of conditions was slightly longer than that of females. The biological information now available shows that C. ferrugineus (Steph.) and C. capensis (Waltl), which are taxonomieally associated by exhibiting sexual dimorphism in the structure of the mandibles, are species that can withstand dry conditions, whereas C. ugandae, C. turcicus, C. pusillus (Schönh.) and C. pusilloides, all of which show sexual dimorphism in the antennae, are unable to breed at relative humidities much below 50 per cent.

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