| 词条 | Opsariichthys pachycephalus |
| 释义 |
| taxon = Opsariichthys pachycephalus | authority = Günther, 1868[1] | synonyms = Zacco pachycephalus (Günther, 1868) Zacco taiwanensis Chen, 1982 }}Opsariichthys pachycephalus is a species of ray-finned fish in the genus Opsariichthys endemic to Taiwan. It is one of the most common minnows of Taiwan, found in the entire western part of the island from sea level to 1200 m elevation.[2] It is a small species reaching a maximum length of {{convert|16|cm|abbr=on}} TL.[1] Colonization historyOpsariichthys pachycephalus populations show strong genetic structuring between drainages and weak genetic structuring within drainages. It is suggested that the current population structuring reflects colonization from two glacial refugia, formed when the cooler climate during the last glacial period restricted this species to lower elevations: one on the land bridge that connected Taiwan to the Asian mainland, and the other one in the south, east of the Gaoping River. Further divergence may be due to founder effects, bottlenecks, and selection.[2]ReproductionOpsariichthys pachycephalus show two peak spawning periods, one in spring (February–April) and the other one in summer (June–August), the former being the main one. During the courtship, males chase after one female, showing aggressive behaviours among the males. Only the winner of the male-male contests follow the female to spawn. After spawning, the male may return to the spawning site to chase away egg predators.[3]References1. ^1 {{FishBase|Opsariichthys|pachycephalus|month=December |year=2013}} {{Taxonbar|from=Q3764611}}2. ^1 {{Cite journal | doi = 10.1046/j.1365-294x.1999.00787.x| title = Influence of glaciation on divergence patterns of the endemic minnow, Zacco pachycephalus, in Taiwan| journal = Molecular Ecology| volume = 8| issue = 11| pages = 1879–1888| year = 1999| last1 = Wang | first1 = H. Y. | last2 = Tsai | first2 = M. P. | last3 = Yu | first3 = M. J. | last4 = Lee | first4 = S. C. | pmid=10620231}} 3. ^{{Cite journal | doi = 10.1007/BF00002481| title = The reproductive biology of an endemic cyprinid, Zacco pachycephalus, in Taiwan| journal = Environmental Biology of Fishes| volume = 43| issue = 2| pages = 135–143| year = 1995| last1 = Wang | first1 = J. T. | last2 = Liu | first2 = M. C. | last3 = Fang | first3 = L. S. }} 5 : Opsariichthys|Endemic fauna of Taiwan|Freshwater fish of Taiwan|Fish described in 1868|Taxa named by Albert Günther |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。