Mixed mating in Banksia media

2002 ◽  
Vol 50 (5) ◽  
pp. 627 ◽  
Author(s):  
S. J. Wooller ◽  
R. D. Wooller
Keyword(s):  
Seed Production ◽  
Inbreeding Depression ◽  
Western Australia ◽  
Fruit Set ◽  
Mating Strategy ◽  
South Coast ◽  
Mixed Mating ◽  
The South ◽  
Self Pollination ◽  
Mixed Mating Strategy

Differential exclusion of vertebrates and invertebrates from the inflorescences of Banksia media R.Br. on the south coast of Western Australia showed the species to be partially self-compatible. Access by invertebrates increased fruit set and additional access by vertebrates resulted in even greater fruit set. Honeyeater birds and marsupial nectarivores were abundant and widespread in the study area and most carried the pollen of Banksia media while it flowered. However, although B. media had the floral characteristics attributed to vertebrate pollination, self-pollination and pollination by insects clearly also play major roles in seed production. Banksia media regenerates solely from seed released after fire and we suggest that its mixed mating strategy is a compromise between inbreeding depression and risk of elimination from areas prone to occasional fires.

A Precambrian fayalite granite from the south coast of Western Australia

Lithos ◽  
1978 ◽  
Vol 11 (3) ◽  
pp. 209-218 ◽  
Author(s):  
N.C.N. Stephenson ◽  
H.D. Hensel
Keyword(s):  
Western Australia ◽  
South Coast ◽  
The South

scholarly journals A mixed-mating strategy in a hermaphroditic vertebrate

2006 ◽  
Vol 273 (1600) ◽  
pp. 2449-2452 ◽  
Author(s):  
Mark Mackiewicz ◽  
Andrey Tatarenkov ◽  
Bruce J Turner ◽  
John C Avise
Keyword(s):  
Mating Strategy ◽  
Mixed Mating ◽  
Mixed Mating Strategy

An aerial survey for sperm whales off the coast of Western Australia 1963-1965.

1968 ◽  
Vol 19 (1) ◽  
pp. 31 ◽  
Author(s):  
JL Bannister
Keyword(s):  
Continental Slope ◽  
Western Australia ◽  
West Coast ◽  
Aerial Survey ◽  
South Coast ◽  
Sperm Whales ◽  
The South ◽  
The West ◽  
Offshore Area ◽  
Direction Of Movement

Objectives, methods, and results of a two-year aerial survey for sperm whales off the coast of Western Australia, 1963-65, are described. Data from commercial whaling operations have been included where appropriate. Sperm whales were found well off the west coast, but only in a narrow strip along the continental slope off the south coast. On both coasts, the main direction of movement was parallel to the coastline and towards Cape Leeuwin. Unexpectedly, whales off the west coast were heading mainly southwards throughout the year. Densities in the offshore area north of Perth were significantly higher than along the continental slope in the same region but similar to those along the continental slope from Perth to Cape Leeuwin. The situation was reversed on the south coast with whales being found, in high densities, only along the continental slope. Off the west coast, there were marked decreases in abundance in winter, with peaks in spring-early summer and autumn; no change in direction of movement could be related to the peaks. Average numbers calculated as present in the survey area at one time were: west coast, c. 1000 whales; south coast, c. 200 whales. South coast data indicate the passage of about 40 whales in one 24 hr period, very similar to results from whaling company aerial spotter data off Albany. The hypothesis of two separate populations of sperm whales off Western Australia is discussed and thought to be unlikely. A small amount of data on baleen whale sightings is recorded.

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