منابع مشابه
Aphis gossypii
BIOLOGY/ECOLOGY Dispersal mechanisms Flight range of winged adults is very limited. Long-range dispersal of eggs, immature stages and adults is manmediated with the transport of infested plant material. Reproduction The taxonomic status of this alien aphid is problematic, and hence the interpretation of biological information is difficult. Moreover, different biotypes exhibiting host preference...
متن کاملLions
while the rest just watch. Communal cub rearing confers substantial benefits: groups of mothers can successfully defend their cubs against an infanticidal male, whereas a lone female has no chance one-on-one. But most other felids — for example, leopards, cougars, tigers, bobcats and lynx — are also infanticidal, yet they are all solitary. The true hallmark of lion sociality is their joint defe...
متن کاملLions, Conflict and Conservation
Although we have no reliable data on Africa-wide lion populations prior to the late 20th century, there is wide agreement that numbers have been in steady decline, and are no doubt at an all-time low; estimates based on local experts’ best guesses and estimates range between 16,500 and 47,000 (Chardonnet, 2002; Bauer and van der Merwe, 2004). Lions have been totally eliminated in North Africa, ...
متن کاملThe evolutionary convergence of mid-Mesozoic lacewings and Cenozoic butterflies
Mid-Mesozoic kalligrammatid lacewings (Neuroptera) entered the fossil record 165 million years ago (Ma) and disappeared 45 Ma later. Extant papilionoid butterflies (Lepidoptera) probably originated 80-70 Ma, long after kalligrammatids became extinct. Although poor preservation of kalligrammatid fossils previously prevented their detailed morphological and ecological characterization, we examine...
متن کاملJumping mechanisms in lacewings (Neuroptera, Chrysopidae and Hemerobiidae).
Lacewings launch themselves into the air by simultaneous propulsive movements of the middle and hind legs as revealed in video images captured at a rate of 1000 s(-1). These movements were powered largely by thoracic trochanteral depressor muscles but did not start from a particular preset position of these legs. Ridges on the lateral sides of the meso- and metathorax fluoresced bright blue whe...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1983
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay6179