Browsing Publicaciones Científicas by Issue Date
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Janzen, Daniel H.
(1963-10)
While trapping beaver in the Mississippi River bottom-lands
below Hastings, Minnesota in March, 1960, many of the twoyear-
oIds were found to be heavily infested with the coleopterous
ectoparasite, Platypsyllus castoris ...
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Janzen, Daniel H.
(1964)
Host plants and behavior of males and females of 4
subspecies of the carpenter bee Xylocopa (N otoxylocopa)
tabaniformis (illota Cockerell, melallosoma O'Brien
and Hurd, rujina Maidl, and tabaniformis Smith) are
discussed ...
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Janzen, Daniel H.
(1966-10)
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Janzen, Daniel H.
(1967)
In 1967, Banegas and coworkers stated clearly that Dermatobia hominis is "unable to survive the prolonged
dry season in the lowlands along the Pacific coast" of Central America. While this statement may be
true for the ...
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Janzen, Daniel H.; M. V., Brian
(1967-01)
The study of social insects is inherently a problem in
population biology and Brian's short book is the first
broad spectrum review which adopts thi philosophy.
He discusses the literature on ants, termites, and ...
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Bowman, R. I.; Janzen, Daniel H.
(1967-06)
The Galapagos Islands are repeatedly
mentioned in the classical observational literature
of evolution and speciation and are
much loved by Darwinophiles, but it is only
with the publication of this Proceedings of
the ...
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Janzen, Daniel H.
(1968-03)
As is customary for symposia with many
contributors (27 with 19 papers), the Proceedings
of the 1965 symposium on the
Biology of the California Islands has only
now been published. "The symposium was
the natural ...
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Janzen, Daniel H.
(1968-07)
A nest of the nocturnal bee M egalopta centralis Friese is described from a nearly
vertical, 22 mm -diameter dead stick along a road through primary lowland tropical
wet forest. The cell substrate is wood fragmented by ...
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Janzen, Daniel H.
(1971-04-02)
A Bombus pullatus nest 5.5 m above the ground in the foliage of a banana plant
was collected at 1,400 m elevation near San Vito de Java, Costa Rica. Containing
36 presumably virgin queens, 259 workers, and 48 males, the ...
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Janzen, Daniel H.; Price D., Jones; Solomon, M. E.
(1972-01)
What effect does the array of animals that kill seeds (and seedlings), henceforth
termed the seed predator guild, have on the community structure of
the plants in a forest? In north temperate forests, one of the major ...
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Janzen, Daniel H.
(1972-09)
In a Nigerian rain forest, occupation of Barteria fistulosa saplings by Pachysima
aethiops ants results in the plants having more leaves, more branches, more leaves per branch,
and less damage to the shoot tips than do ...
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Janzen, Daniel H.
(1973)
We havc the working hypothesis th:lt the high species richness of lowland
tropical forcsts is maintained in lllajor part by the herbivore COllllllllllity. The ecological
proccss is that thcsc consumers prevcnt the best ...
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Janzen, Daniel H.
(1973)
We may assume that the degree of spatial and temporal heterogeneity
of tropical crop plants will influence their harvest by insects and by man.
'The question then becomes one of recognizing those types of heterogeneity
that ...
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Janzen, Daniel H.
(1973)
It has been suggested that secondary substances in plants form cffective
defences against herbivores. This hyputhesis can be tested through experimental
field and laboratory studies. For example, it has been shown ...
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Janzen, Daniel H.
(1973)
Les diiferentes especes de plantes renferment dans Ie meme organe divers
produits toxiques. Dans la foret tropicale caduque de Costa-Rica, la plupart des
graines d'arbres contiennent diiferents produits toxiques. Dans ...
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Rehr, S. S.; Fenny, P. P.; Janzen, Daniel H.
(1973-06)
On the basis of their association with ants, neotropical species of the genus Acacia may be
grouped into two broad categories. 'Ant-acacias', comprising less than 10% of the species
in Central America depend in varying ...
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S. S., Rehr; P. P., Feeny; Janzen, Daniel H.
(1973-06)
On the basis of their association with ants, neotropical species of the genus Acacia may be
grouped into two broad categories. 'Ant-acacias', comprising less than 10% of the species
in Central America depend in varying ...