Definition of melanism in English:

melanism

noun ˈmɛlənɪz(ə)mˈmɛləˌnɪzəm

mass nounZoology

Darkening of body tissues caused by excessive production of melanin, especially as a form of colour variation in animals.
〔主动〕黑化（型），黑素沉着症（黑色素过多导致机体组织颜色异常变深，尤指动物颜色变异）
Example sentencesExamples
- Adaptations to short, cool summers include activity at low temperatures, selection of warm habitats and microhabitats, melanism and hairiness coupled with basking behaviour, and prolonged or abbreviated life cycles.
- Albinism does occur in some populations, but there are no published records of melanism (black fur) in lions.
- However, melanism and amelanism are known to occur in many species of natricine snakes.
- That pattern of morphological convergence includes larger bills, reduced rust coloration in plumage, and increased melanism or dark coloration.
- The work of Burtt and colleagues provides a nice complement to recent work on the genetic basis of melanism in birds.

Derivatives

melanic

adjective mɪˈlanɪk

Zoology

The majority of studies on melanin ornaments cited in Table 1 measured only the size of discrete patches of melanic feathers.
Example sentencesExamples
- We suggest that, in addition to its other functions, an important selective advantage of melanic plumage is its resistance to degradation by bacteria that are part of every bird's environment.
- There may still be very good mechanistic reasons why melanic plumage color reveals individual quality in European barn swallows, but they should have nothing to do with carotenoid signaling.
- That's a golden cat skin, and that looks like a clouded leopard skin with a very unusual melanic coat variation.
- By the time the George Reserve was revisited in 1994 and 1995, the percentage of melanic specimens had dropped to 18.3%.

Definition of melanism in US English:

melanism

nounˈmeləˌnizəmˈmɛləˌnɪzəm

Zoology

Unusual darkening of body tissues caused by excessive production of melanin, especially as a form of color variation in animals.
〔主动〕黑化（型），黑素沉着症（黑色素过多导致机体组织颜色异常变深，尤指动物颜色变异）
Example sentencesExamples
- Albinism does occur in some populations, but there are no published records of melanism (black fur) in lions.
- The work of Burtt and colleagues provides a nice complement to recent work on the genetic basis of melanism in birds.
- Adaptations to short, cool summers include activity at low temperatures, selection of warm habitats and microhabitats, melanism and hairiness coupled with basking behaviour, and prolonged or abbreviated life cycles.
- That pattern of morphological convergence includes larger bills, reduced rust coloration in plumage, and increased melanism or dark coloration.
- However, melanism and amelanism are known to occur in many species of natricine snakes.

词汇	melanism
释义	Definition of melanism in English: melanism noun ˈmɛlənɪz(ə)mˈmɛləˌnɪzəm mass nounZoology Darkening of body tissues caused by excessive production of melanin, especially as a form of colour variation in animals. 〔主动〕黑化（型），黑素沉着症（黑色素过多导致机体组织颜色异常变深，尤指动物颜色变异） Example sentencesExamples Adaptations to short, cool summers include activity at low temperatures, selection of warm habitats and microhabitats, melanism and hairiness coupled with basking behaviour, and prolonged or abbreviated life cycles. Albinism does occur in some populations, but there are no published records of melanism (black fur) in lions. However, melanism and amelanism are known to occur in many species of natricine snakes. That pattern of morphological convergence includes larger bills, reduced rust coloration in plumage, and increased melanism or dark coloration. The work of Burtt and colleagues provides a nice complement to recent work on the genetic basis of melanism in birds. Derivatives melanic adjective mɪˈlanɪk Zoology The majority of studies on melanin ornaments cited in Table 1 measured only the size of discrete patches of melanic feathers. Example sentencesExamples We suggest that, in addition to its other functions, an important selective advantage of melanic plumage is its resistance to degradation by bacteria that are part of every bird's environment. There may still be very good mechanistic reasons why melanic plumage color reveals individual quality in European barn swallows, but they should have nothing to do with carotenoid signaling. That's a golden cat skin, and that looks like a clouded leopard skin with a very unusual melanic coat variation. By the time the George Reserve was revisited in 1994 and 1995, the percentage of melanic specimens had dropped to 18.3%. Definition of melanism in US English: melanism nounˈmeləˌnizəmˈmɛləˌnɪzəm Zoology Unusual darkening of body tissues caused by excessive production of melanin, especially as a form of color variation in animals. 〔主动〕黑化（型），黑素沉着症（黑色素过多导致机体组织颜色异常变深，尤指动物颜色变异） Example sentencesExamples Albinism does occur in some populations, but there are no published records of melanism (black fur) in lions. The work of Burtt and colleagues provides a nice complement to recent work on the genetic basis of melanism in birds. Adaptations to short, cool summers include activity at low temperatures, selection of warm habitats and microhabitats, melanism and hairiness coupled with basking behaviour, and prolonged or abbreviated life cycles. That pattern of morphological convergence includes larger bills, reduced rust coloration in plumage, and increased melanism or dark coloration. However, melanism and amelanism are known to occur in many species of natricine snakes.
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