obligately
- adverb
- /əˈblɪɡətli/
- Specialized
:
obligatoriamente
- Parthenogenesis occurs throughout the animal kingdom (including lizards, amphibians, fish, and numerous invertebrates), but only a few, like these brine shrimp, are obligately parthenogenetic.
Examples
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Parthenogenesis has evolved in animals hundreds or even thousands of times, but only rarely have obligately parthenogenetic lineages survived for more than a relatively short time.
Academic text (1994) -
These birds are obligately migratory, meaning they must travel long distances to find food during winter.
-
Certain species, like the brine shrimp, reproduce obligately in harsh environments where males are scarce.
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In some plants, seeds are produced obligately in response to specific environmental cues.
Synonyms
∞
3.7
In a way that cannot be avoided
1
6.8
Because the law or rules require it
1
5.2
In a way that is absolutely needed
How Necessary
Surface Forms
Morphology
obligately = obligate (semi-transparent) = obligate + ly
Formally derived via '-ly' from 'obligate', but the specialized biological usage ('obligately' meaning necessarily in an ecological sense) may be less obvious to general learners.
Etymology
The word obligately also comes from the parts ob- and ligare meaning 'to bind', the same root behind obligation and oblige. So in biology or nature, something that lives or acts obligately is 'bound' or 'forced' to do it, as when a parasite must live inside a host.