词汇 | gill-arches |
释义 | BETA gill archescollocation in Englishmeanings of gillThese words are often used together. Click on the links below to explore the meanings. gill noun uk /ɡɪl/ us /ɡɪl/ the organ through which fish and other water ... See more at gill Examples of gill archesgill arches In the present study we estimated parasite aggregation within hosts considering gillarches as individual patches. This final segregation was more apparent in the second and third gillarches. The niches of both congeners were greatly segregated and a low overlap was found within all gillarches. The gill apparatus was divided into four gillarches. No parasites were found in the outer gill surface in the second and third gillarches, therefore this surface position was not evaluated. Both intra- and interspecific aggregation were followed by considering gillarches as independent patches. The greatest contributing factor to the second factorial axis was the ventral segment in the second, third and fourth gillarches. The dorsal segment contributed highly to the second axis in the first and fourth gillarches. When abundances of both species were low, each monogenean species was segregated at the level of the gillarches. Gillarches, segments, areas and surfaces were considered as environmental variables. Niche overlap was low within each of the four gillarches, and parasites were segregated in the same microhabitats within each gill arch. The gillarches are not distinguishable. The percentage of sections inhabited by at least one parasite increased with the intensity of infection but the distribution of parasites between gillarches remained unchanged (table 2). Suydam (1971) suggested that the distribution of one of the monogenean species he studied was the result of the force and the direction of water currents over the gillarches. Each of the second to the fifth gillarches supports a sheet of muscular and connective tissue called a septum. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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