Is egg-damaging behavior by great spotted cuckoos an accident or an adaptation?
نویسندگان
چکیده
منابع مشابه
Is egg-damaging behavior by great spotted cuckoos an accident or an adaptation?
Adult great spotted cuckoos Clamator glandarius damage the eggs of their magpie Pica pica host without removing them from the nest or eating them but by producing the death of the embryo. Observations as well as experiments were used to test several predictions of two different possibilities: great spotted cuckoo egg-damaging behavior is a parasitic tactic resulting from a direct selection proc...
متن کاملGreat spotted cuckoos improve their reproductive success by damaging magpie host eggs
Adult great spotted cuckoos, Clamator glandariusdamage the eggs of their magpie, Pica picahost without removing or eating them. The number of damaged magpie eggs was recorded in 360 parasitized nests of which 62.2% contained between one and eight damaged magpie eggs. Egg-destroying behaviour may be adaptive if it reduces nestling competition and/or enhances the hatching success of the cuckoo. T...
متن کاملEvolution of tolerance by magpies to brood parasitism by great spotted cuckoos.
Hosts may use two different strategies to ameliorate negative effects of a given parasite burden: resistance or tolerance. Although both resistance and tolerance of parasitism should evolve as a consequence of selection pressures owing to parasitism, the study of evolutionary patterns of tolerance has traditionally been neglected by animal biologists. Here, we explore geographical covariation b...
متن کاملThe Effect of Magpie Breeding Density and Synchrony on Brood Parasitism by Great Spotted Cuckoos
Nesting density and synchrony by hosts may indirectly serve as a defense mechanism against brood parasites. Here we examine the relationships between spatial and temporal distribution of host nests and the probability of being parasitized. We use as host species the Black-billed Magpie (Pica pica), a species that is parasitized by the Great Spotted Cuckoo (Clamator glandark) in southern Europe....
متن کاملAn Egg Is an Egg Is an Egg
typical historian of biology, either. Her recent books, even though they draw heavily on historical evidence, are not histories in the strict sense. Keller is highly selec-Making Sense of Life: Explaining Biological Development tive in her choice of material and she does not write with Models, Metaphors, and Machines extensively documented monographs on a topic. Rather, her style is essayistic ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Behavioral Ecology
سال: 2000
ISSN: 1465-7279
DOI: 10.1093/beheco/11.5.495