Besides the common labial and metapleural glands, four novel exocrine glands are described in the thorax of both workers and queens of the ponerine ant Myopias hollandi. From anterior to posterior, these glands were designated as the propleural pit gland, the posterolateral pronotal gland, the anterolateral propodeal gland and the metasternal process gland. They all correspond with class-3 glands, that are made up of bicellular units that each comprise a secretory cell and a duct cell. In the propleural pit gland, the ducts are characterized by a gradually widening diameter, while in the three other glands the ducts show a portion which displays a balloon-like expansion, that on semithin sections stains very dark. For none of these novel glands the function is known as yet, although ultrastructural examination indicates that they produce a non-proteinaceous and therefore possibly pheromonal secretion.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.asd.2018.04.005 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Analysis of surgically induced astigmatism of the anterior, posterior, and total cornea after implantable collamer lens implantation: a comparative study between temporal and superior clear corneal incisions.
BMC Ophthalmol
June 2024
Eye Center, Second Affiliated Hospital, School of Medicine, Zhejiang University, 88 Jiefang Road, Hangzhou, 310009, China.
Background: To comparatively analyze the surgically induced astigmatism (SIA) of the anterior, posterior, and total corneas of eyes undertaking implantable collamer lens (ICL) implantation with temporal or superior corneal incisions.
Methods: One hundred and nine eyes of 109 patients who received ICL implantation were recruited: 40 eyes had temporal incisions and 69 eyes had superior incisions. Total corneal refractive power (TCRP); simulated keratometry of the anterior (Sim-K) and posterior (Sim-K) corneal curvature; and astigmatism of the anterior (CA), posterior (CA), and total (CA) cornea were recorded through a Pentacam preoperatively and 3 months postoperatively.
The CRW1 Index: Identification of Eyes with Previous Myopic Laser Vision Correction Using Only a Swept-Source OCT Biometer.
Am J Ophthalmol
March 2023
Department of Experimental Ophthalmology, Saarland University, Homburg, Germany; Department of Ophthalmology and Optometry, Kepler University Hospital GmbH, Linz, Austria; Department of Ophthalmology, Johannes Kepler University Linz, Linz, Austria; Institut für Refraktive und Ophthalmochirurgie (IROC), Zurich, Switzerland.
Article Synopsis
- - The study introduces a new index called Cooke-Riaz-Wendelstein (CRW1) that utilizes swept-source optical coherence tomography (SS-OCT) measurements to indicate if a measured eye has a history of myopic laser vision correction (M-LVC).
- - Conducted across six centers, the research analyzed data from 49,199 eyes and found that the CRW1 Index had a positive predictive value (PPV) of 93%, outperforming previous methods in identifying eyes with M-LVC.
- - The CRW1 index provides a convenient and efficient tool for surgeons to detect eyes with a high likelihood of previous M-LVC using only basic SS-OCT measurements.
Age- and sex-related differences in the measures of anterior segment parameters in a myopic clinical sample using Pentacam Scheimpflug tomography.
Int Ophthalmol
May 2022
School of Optometry and Vision Science, Faculty of Medicine and Health, University of New South Wales, Sydney, Australia.
Purpose: To assess age-and sex-related differences of anterior segment parameters in a myopic clinical sample.
Methods: This clinic-based retrospective study involved eligible subjects grouped into myopia (i.e.
The utility of measures of anterior segment parameters of a Pentacam Scheimpflug tomographer in discriminating high myopic astigmatism from keratoconus.
PLoS One
January 2022
Eye Clinic Cosmopolitan Medical Center, Dworwulu, Accra, Ghana.
The study aimed to evaluate and compare anterior segment parameters between keratoconic eyes and eyes with high myopic astigmatism using Pentacam Scheimpflug tomography. This was a retrospective cross-sectional study that included sixty keratoconic eyes (thirty-two persons) and seventy-three eyes (forty-six persons) with high myopic astigmatism with mean ages 24.72 ± 11.
View Article and Find Full Text PDFPurpose: To evaluate the impact of cap thickness for small incision lenticule extraction (SMILE) on changes in corneal curvature and biomechanics.
Methods: One hundred eyes (50 patients) were enrolled in this prospective contralateral eye study. The difference in manifest refraction spherical equivalent (MRSE) in the same patient was less than 0.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!