Interspecific attraction to the mobbing calls of black-capped chickadees ( Parus atricapillus )

1996 ◽  
Vol 38 (4) ◽  
pp. 287-292 ◽  
Author(s):  
Christine R. Hurd
Keyword(s):  
Parus Atricapillus ◽  
Interspecific Attraction

Intraspecific and interspecific attraction of threeTomicusbeetle species during the shoot-feeding phase

2015 ◽  
Vol 105 (2) ◽  
pp. 225-233 ◽  
Author(s):  
J. Wang ◽  
Z. Zhang ◽  
X. Kong ◽  
H. Wang ◽  
S. Zhang
Keyword(s):  
Sampling Method ◽  
Beetle Species ◽  
Dynamic Headspace ◽  
Headspace Volatiles ◽  
Interspecific Attraction ◽  
Host Trees ◽  
Pinus Yunnanensis ◽  
Dynamic Headspace Sampling ◽  
Ecological Relationship ◽  
Tomicus Minor

AbstractThe shoot beetlesTomicus minor, Tomicus yunnanensis, andTomicus brevipilosushave been decimatingPinus yunnanensistrees for more than 30 years in Southwestern China. To understand the chemical ecological relationship between pines andTomicus, and among the three beetle species, we compared the attraction of these beetles to damaged shoots, extracts from damaged shoots, and volatiles from damaged shoots collected by the dynamic headspace sampling method. Experiments were performed using a modified open-arena olfactometer. The maleT. minorand both sexes ofT. brevipilosuswere more strongly attracted to damaged shoots than to undamaged shoots and they showed attraction to shoots damaged by the same species. FemaleT. minorand both sexes ofT. yunnanensiswere attracted to shoots damaged by femaleT. brevipilosus. The three beetle species were attracted to shoot extracts and dynamic headspace volatiles from shoots damaged by the same species and sex. FemaleT. minorand maleT. yunnanensiswere also attracted to dynamic headspace volatiles from shoots damaged by both sexes ofT. brevipilosus. The results suggested that specific semiochemicals that are induced or produced byT. brevipilosusalso attractT. minorandT. yunnanensis. The semiochemicals in damaged shoots affect the attraction of the three beetle species and play an important chemical communication role in weakening the host trees during the beetles’ shoot-feeding phase.

An Advantage of Winter Flocking in the Black-Capped Chickadee, Parus Atricapillus

Ecology ◽  
1974 ◽  
Vol 55 (3) ◽  
pp. 674-676 ◽  
Author(s):  
David P. Barash
Keyword(s):  
Parus Atricapillus

Winter Survival and Territory Acquisition in a Northern Population of Black-Capped Chickadees

The Auk ◽  
1988 ◽  
Vol 105 (4) ◽  
pp. 727-736 ◽  
Author(s):  
André Desrochers ◽  
Susan J. Hannon ◽  
Kelly E. Nordin
Keyword(s):  
Survival Rates ◽  
Early Spring ◽  
Control Area ◽  
Winter Survival ◽  
Food Supplementation ◽  
First Year ◽  
Differential Survival ◽  
Northern Population ◽  
Parus Atricapillus ◽  
Lower Ranking

Abstract We assessed the effects of winter food supplementation on differential survival between sex, age and dominance classes, and the effects of feeding and territorial defense on breeding density in a northern population of Black-capped Chickadees (Parus atricapillus). Survival rates were higher in a food-supplemented area than in a control area, which suggests that food abundance limited winter survival. Survival was greater among males than lower-ranking females in 1 of 2 years, and greater in dominants than in subordinates, within sex and age classes. Survival of adults and first-year birds, however, did not differ significantly. In the 2 years of this study, a sharp decline of population size occurred at the onset of territoriality in spring. Birds that disappeared in spring were mainly subordinates of each sex. Breeding densities in control and feeder areas were similar in the two years. Eight of 14 territorial birds removed in 2 years were replaced, implying that a nonbreeding surplus was present in early spring.

Interspecific attraction to male-produced pheromones of two species ofAmblyomma ticks (Acari: Ixodidae)

1990 ◽  
Vol 3 (4) ◽  
pp. 557-565 ◽  
Author(s):  
C. E. Yunker ◽  
H. R. Andrew ◽  
R. A. I. Norval ◽  
J. E. Keirans
Keyword(s):  
Interspecific Attraction

Female demands: some fitness implications in chickadee flocks

1984 ◽  
Vol 62 (12) ◽  
pp. 2550-2552 ◽  
Author(s):  
Craig D. Orr ◽  
Nicolaas A. M. Verbeek
Keyword(s):  
Nest Site ◽  
Survival Rates ◽  
Food Demand ◽  
Male Aggression ◽  
Parus Atricapillus ◽  
Overwinter Survival ◽  
Nest Sites ◽  
Extra Energy ◽  
Extra Food

Female black-capped chickadees (Parus atricapillus), besides searching for their own food, "demand" food from their mates in the spring for extra energy needed to produce and incubate eggs. This behaviour signals their readiness to copulate and it is followed by increased levels of male – male aggression, probably to prevent cuckoldry. Increased aggression owing to limited nest site availability may also be locally important. Subordinate pairs disperse and many presumably die. The extra food allows females with nest sites to breed earlier than if they fed themselves exclusively, and producing early broods appears to be a better fitness strategy than having larger clutches or additional broods. Juveniles from early broods survive better and attain higher social ranks in flock hierarchies, and dominant pairs have the highest overwinter survival rates as well as a better chance than subordinate pairs of obtaining a territory in the spring.

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