Debilis

Tryblionella debilis Arnott in Ireland. Quarterly Journal of Microcopical Science, 2nd series Type species The type species lectotype of the genus Tryblionella is Tryblionella acuminata W. Status of name This name is of an entity that is currently accepted taxonomically.

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Nomenclatural notes As Tryblionella debilis Arnott in O'Meara in some publications but this exact name was introduced by O'Meara and credited to Arnott even in the title of the paper. Detailed distribution with sources Click to Load. Key references Cantonati, M.

Freshwater benthic diatoms of Central Europe: English edition with updated taxonomy and added species.

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The diatom flora and cyobacteria from caves on Kauai, Hawaii. Investigation of the cave diatom flora of Kanuai, Hawaii: Three extant species of Paralia Bacillariophyceae along the coast of Japan.

The passage to adulthood is particularly rare because scientists were able to obtain only one female for larvae and one male for 10 cerambycoid larvae! The fact that males have become anecdotal in populations can be explained in three ways: However, the latest studies do not allow to demonstrate and confirm one of these theories.

North America Distribution

The Perotti team suggests that the bias in favour of females may also be explained by the presence of a haplodiploid cycle. Indeed, the populations of many haplodiploid species, social or not, such as parasitoid wasps lien , have a sex-ratio biased in favour of females.

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Haplodiploid parthenogenetic species such as Micromalthus debilis , Cinipidae wasps and Cecidomyidae flies, exhibit similar cycles with a bias in favour of females, although they are unrelated. However, few studies have been conducted to date on these biological cycles.

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• The incredible life cycle of Micromalthus debilis!;

The Perotti study confirmed experimentally that adults are physiologically unable to reproduce, this loss probably occurring over time by degeneration of rare adults. Although cases of sterile males in other species may have been described, the fact that in Micromalthus debilis females are also described remains unprecedented according to P. If these bacteria restore diploid and thus female formation, heat would neutralize or kill Rickettsia inducing haploid male formation. No symbiote was detected in adults. It has been introduced in almost every region of the globe.

Smithsonian Marine Station

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Larvae in the second stage -cerambycoids — of M. Adult female of M. Life cycle of Micromalthus debilis Source: The gost sex-life of the paedogenetic beetle Micromalthus debilis.