flies couple making love on the green leafAs ubiquitous insects, dipterans play an important role at various trophic levels both as consumers and as prey. In some groups the larvae complete their development without feeding, and in others the adults do not feed. The larvae can be herbivores, scavengers, decomposers, predators or parasites, with the consumption of decaying organic matter being one of the most prevalent feeding behaviours. The fruit or detritus is consumed along with the associated micro-organisms, a sieve-like filter in the pharynx being used to concentrate the particles, while flesh-eating larvae have mouth-hooks to help shred their food. The larvae of some groups feed on or in the living tissues of plants and fungi, and some of these are serious pests of agricultural crops. Some aquatic larvae consume the films of algae that form underwater on rocks and plants. Many of the parasitoid larvae grow inside and eventually kill other arthropods, while parasitic larvae may attack vertebrate hosts
圖片編號:
260122707
拍攝者:
Loveandracing
點數下載
授權類型 | 尺寸 | 像素 | 格式 | 點數 | |
---|---|---|---|---|---|
標準授權 | XS | 480 x 320 | JPG | 13 | |
標準授權 | S | 800 x 533 | JPG | 15 | |
標準授權 | M | 2121 x 1414 | JPG | 18 | |
標準授權 | L | 2738 x 1825 | JPG | 20 | |
標準授權 | XL | 3464 x 2309 | JPG | 22 | |
標準授權 | MAX | 6000 x 4000 | JPG | 23 | |
標準授權 | TIFF | 8485 x 5657 | TIF | 39 | |
進階授權 | WEL | 6000 x 4000 | JPG | 88 | |
進階授權 | PEL | 6000 x 4000 | JPG | 88 | |
進階授權 | UEL | 6000 x 4000 | JPG | 88 |
XS
S
M
L
XL
MAX
TIFF
WEL
PEL
UEL
標準授權 | 480 x 320 px | JPG | 13 點 |
標準授權 | 800 x 533 px | JPG | 15 點 |
標準授權 | 2121 x 1414 px | JPG | 18 點 |
標準授權 | 2738 x 1825 px | JPG | 20 點 |
標準授權 | 3464 x 2309 px | JPG | 22 點 |
標準授權 | 6000 x 4000 px | JPG | 23 點 |
標準授權 | 8485 x 5657 px | TIF | 39 點 |
進階授權 | 6000 x 4000 px | JPG | 88 點 |
進階授權 | 6000 x 4000 px | JPG | 88 點 |
進階授權 | 6000 x 4000 px | JPG | 88 點 |