planktotrophic वाक्य
उदाहरण वाक्य
मोबाइल
- Their protoconch morphologhy seems to infer a non-planktotrophic larval development.
- Veligers feed on plankton ( planktotrophic ) and they are probably obligate planktotrophs.
- Planktotrophic development is the most common type of larval development, especially among benthic invertebrates.
- The larvae have a short planktonic development, non-planktotrophic as usual in Vetigastropoda and Patellogastropoda
- Newly formed pelagic, planktotrophic larvae float in the water until dispersing and settling in mussel beds.
- The female carries them around under the abdomen for about six days before they develop into planktotrophic larvae.
- During their time in the water column, planktotrophic larvae feed on phytoplankton and small zooplankton, including other larvae.
- This species is characterized by a flat white shell, a white body and development that includes a planktotrophic larval stage.
- The larvae of " Bathymodiolus thermophilus " drift with the currents and are planktotrophic, feeding on phytoplankton and small zooplankton.
- It has been hypothesized that two factors that increase the likelihood of large swings in population are broadcast spawning and the possession of planktotrophic larvae.
- "' Planktotrophic "'species, on the other hand, generally have fairly long pelagic larval durations and feed while in the water column.
- As is the case for planktotrophic gastropod veligers, the larvae continue to feed and grow until they develop the organs and systems necessary for metamorphosis to the juvenile stage.
- The planktotrophic larva is considered to be the ancestral larval type for echinoderms but after 500 million years of larval evolution, about 68 % of species whose development is known have a lecithotrophic larval type.
- Both red and blue king crabs have planktotrophic larvae that undergo 4 zoeal stages in the water column and a non-feeding, glaucothoe stage which is an intermediate stage which seeks appropriate habitat on the sea floor.
- The length of the veliger stage in the natural environment is unknown and undoubtedly variable; however, in the lab, veligers of some species become competent to metamorphose in anywhere from a few days ( lecithotrophic larvae ) to a month or more after hatching ( planktotrophic larvae ).
- Most of these explanations can be excluded for the Monogenea, whose larvae are never planktotrophic ( therefore eliminating explanations 1 and 2 ), their larvae are always short-lived ( 3 ), Gyrodactylidae are most common not only close to melting ice but in cold seas generally ( 5 ).
- The relatively long time most planktotrophic larvae spend in the water column and their apparently low probability of successful recruitment led some early researchers to develop a lottery hypothesis that states animals release huge numbers of larvae to increase the chances that at least one will survive, and that larvae cannot influence their probability of success.
- Thorson's rule states that benthic marine invertebrates at low latitudes tend to produce large numbers of eggs developing to pelagic ( often planktotrophic [ plankton-feeding ] ) and widely dispersing larvae, whereas at high latitudes such organisms tend to produce fewer and larger lecithotrophic ( yolk-feeding ) eggs and larger offspring, often by viviparity or ovoviviparity, which are often brooded.
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