* Why are the prevalence and diversity of helminths in the endemic Pyrenean brook newt Calotriton asper (Amphibia, Salamandridae) so low?
- A cornerstone in parasitology is why some species or populations are more parasitized than others. Here we examine the influence of host characteristics and habitat on parasite prevalence. We studied the helminths parasitizing the Pyrenean brook newt Calotriton asper (n= 167), paying special attention to the relationship between parasites and ecological factors such as habitat, sex, ontogeny, body size and age of the host. We detected two species of parasites, Megalobatrachonema terdentatum (Nematoda: Kathlaniidae) and Brachycoelium salamandrae (Trematoda: Brachycoeliidae), with a prevalence of 5.99% and 1.2%, respectively. Marginally significant differences were found in the prevalence between sexes, with females being more parasitized than males. The present results show significant differences in the body length of paedomorphic and metamorphic individuals, the former being smaller. Nevertheless, no significant correlations between parasite prevalence and either newt body length, ontogenetic stage or age were found. In comparison with other Salamandridae living in ponds, prevalence and diversity values were low. This may be due to a long hibernation period, the species' lotic habitat and its reophilous lifestyle, which probably do not allow for a high parasite load.
=>出席している, そこにある, 現在の, 今の, 当面の, いあわせている, 考慮している, 現在, を人に贈る,
進呈する, を与える, を渡す, を紹介する, を公開する, を見せる, 示す, 贈り物, 【文法】現在時制の,
プレゼント, 贈る, ある, 現在形の
Overview of noun present
The noun present has 3 senses (first 2 from tagged texts)
1. (17) present, nowadays -- (the period of time that is happening now; any continuous stretch of
time including the moment of speech; "that is enough for the present"; "he lives in the present with
no thought of tomorrow")
2. (4) present -- (something presented as a gift; "his tie was a present from his wife")
3. present, present tense -- (a verb tense that expresses actions or states at the time of speaking)
Overview of verb present
The verb present has 13 senses (first 10 from tagged texts)
1. (40) show, demo, exhibit, present, demonstrate -- (give an exhibition of to an interested
audience; "She shows her dogs frequently"; "We will demo the new software in Washington")
2. (28) present, represent, lay out -- (bring forward and present to the mind; "We presented the
arguments to him"; "We cannot represent this knowledge to our formal reason")
3. (14) stage, present, represent -- (perform (a play), especially on a stage; "we are going to
stage `Othello'")
4. (13) present, submit -- (hand over formally)
5. (7) present, pose -- (introduce; "This poses an interesting question")
6. (3) award, present -- (give, especially as an honor or reward; "bestow honors and prizes at
graduation")
7. (3) give, gift, present -- (give as a present; make a gift of; "What will you give her for her
birthday?")
8. (3) deliver, present -- (deliver (a speech, oration, or idea); "The commencement speaker
presented a forceful speech that impressed the students")
9. (2) introduce, present, acquaint -- (cause to come to know personally; "permit me to acquaint you
with my son"; "introduce the new neighbors to the community")
10. (1) portray, present -- (represent abstractly, for example in a painting, drawing, or sculpture;
"The father is portrayed as a good-looking man in this painting")
11. confront, face, present -- (present somebody with something, usually to accuse or criticize; "We
confronted him with the evidence"; "He was faced with all the evidence and could no longer deny his
actions"; "An enormous dilemma faces us")
12. present -- (formally present a debutante, a representative of a country, etc.)
13. salute, present -- (recognize with a gesture prescribed by a military regulation; assume a
prescribed position; "When the officers show up, the soldiers have to salute")
Overview of adj present
The adj present has 2 senses (first 2 from tagged texts)
1. (60) present -- (temporal sense; intermediate between past and future; now existing or happening
or in consideration; "the present leader"; "articles for present use"; "the present topic"; "the
present system"; "present observations")
2. (39) present -- (being or existing in a specified place; "the murderer is present in this room";
"present at the wedding"; "present at the creation")
--- WordNet end ---