COMPARATIVE MORPHOLOGY OF THE OVIPOSITOR OF SOME PARASITIC HYMENOPTERA IN RELATION TO CHARACTERISTICS OF THEIR HOSTS

1996 ◽  
Vol 128 (3) ◽  
pp. 413-433 ◽  
Author(s):  
A. Le Ralec ◽  
J.M. Rabasse ◽  
E. Wajnberg
Keyword(s):  
Correspondence Analysis ◽  
Morphological Traits ◽  
Morphological Characteristics ◽  
Comparative Morphology ◽  
Interspecific Variation ◽  
Morphological Variations ◽  
Parasitic Hymenoptera ◽  
Different Types ◽  
Host Characteristics

AbstractAlthough the structure of the ovipositor of parasitic Hymenoptera is largely uniform, interspecific variation in its morphology can be observed. Such variability may be related to the diversity of hosts attacked. To verify such an hypothesis, we compared, using correspondence analysis, the morphological characteristics of the ovipositors of 20 species in three categories: (i) species belonging to the same taxonomic unit and attacking the same type of host, (ii) species belonging to the same taxonomic unit but attacking different types of host, and (iii) species belonging to different taxonomic units but attacking the same type of host. Results show that variability in some morphological traits of the ovipositor can be related to host characteristics. Adaptive convergence in morphological variations observed between species is discussed.

scholarly journals Infraspecific morphological variations of Salvia limbata in Iran

2019 ◽  
Vol 5 (1) ◽  
pp. 113-121 ◽  
Author(s):  
S.M. Talebi ◽  
P. Yadegari ◽  
S. Behzadpour ◽  
A. V. Matsyura
Keyword(s):  
Natural Selection ◽  
Morphological Traits ◽  
Morphological Difference ◽  
Morphological Characteristics ◽  
Population Data ◽  
Morphological Variations ◽  
Upgma Tree ◽  
Diverse Area ◽  
Different Populations ◽  
Different Parts

Salvia limbata is an aromatic herb of Lamiaceae, which distributed in different parts of Iran. Studies have revealed that this species has several benefit compounds for human health. In this study, we investigated infra‒specific morphological difference in this species. In total, 21 inflorescence morphological features were evaluated in eight populations; ten individuals were evaluated per each population. Data were analysed using SPSS and MVSP softwares. Morphological traits highly differed among the studied populations and ANOVA test revealed significant differences among most of them. According to UPGMA tree, PCA and PCO plots of morphological characteristics, we reported four distinct phenotypes among the studied populations. CA. Joined plot revealed each of these group were characterized by special traits, which were useful in identification of them. Two phenotypes were monotypic, while the rest were composed of two to four populations. This species has a relative large geographical distribution, the distribution of its populations in diverse area will prevent the focus of natural selection in a given direct. Therefore different phenotypes were found in its different populations.

scholarly journals The dynamic of body and brain co-evolution

2021 ◽  
pp. 105971232199468
Author(s):  
Paolo Pagliuca ◽  
Stefano Nolfi
Keyword(s):  
Morphological Traits ◽  
The Body ◽  
Morphological Variations ◽  
And Control ◽  
Selection Of

We introduce a method that permits to co-evolve the body and the control properties of robots. It can be used to adapt the morphological traits of robots with a hand-designed morphological bauplan or to evolve the morphological bauplan as well. Our results indicate that robots with co-adapted body and control traits outperform robots with fixed hand-designed morphologies. Interestingly, the advantage is not due to the selection of better morphologies but rather to the mutual scaffolding process that results from the possibility to co-adapt the morphological traits to the control traits and vice versa. Our results also demonstrate that morphological variations do not necessarily have destructive effects on robots’ skills.

scholarly journals Morphological correlates of prey consumed by Podarcis melisellensis (Braun, 1877) and P. siculus (Rafinesque, 1810) (Sauria, Lacertidae) from two mainland regions in the eastern Adriatic area

2013 ◽  
Vol 65 (3) ◽  
pp. 1015-1025
Author(s):  
S.Z. Stamenkovic ◽  
Rada Matic
Keyword(s):  
Resource Availability ◽  
Optimal Foraging ◽  
Morphological Traits ◽  
Prey Size ◽  
Morphological Characteristics ◽  
Optimal Foraging Theory ◽  
Variance Partitioning ◽  
Morphometric Data ◽  
Lizard Species ◽  
Trophic Resource

The correlation between trophic utilization and morphology was studied for two lizard species (Podarcis melisellensis and P. siculus) from two mainland localities in the eastern Adriatic area; this is the first report of trophic and morphometric data for P. melisellensis from mainland populations. Variance partitioning showed that most of the variation in morphological traits for the analyzed lizards was the result of differences between species, and to a lesser extent between sexes. Locality did not have a strong effect on the variation of morphological traits. Prey weight is the only characteristic of prey that generally exhibits correlations with morphological characteristics rather than prey size. The pattern of correlations is generally weaker for P. melisellensis than for P. siculus. Optimal foraging theory predictions were generally confirmed: P. siculus is more constrained by trophic resource availability, with a premium on larger and heavier prey consumed in the less productive locality (SM), which can be relaxed in more productive regions (KL). P. melisellensis shows such constraints only for males in the less productive region (SM). Females of both species consume heavier prey.

scholarly journals On the diversity of the SE Indo-Pacific species ofTerebellides(Annelida; Trichobranchidae), with the description of a new species

PeerJ ◽  
2016 ◽  
Vol 4 ◽  
pp. e2313 ◽  
Author(s):  
Julio Parapar ◽  
Juan Moreira ◽  
Daniel Martin
Keyword(s):  
New Species ◽  
Morphological Characteristics ◽  
Relative Length ◽  
Andaman Sea ◽  
Species Discrimination ◽  
Pacific Waters ◽  
Routine Monitoring ◽  
Different Types ◽  
Pacific Species ◽  
A New Species

The study of material collected during routine monitoring surveys dealing with oil extraction and aquaculture in waters off Myanmar (North Andaman Sea) and in the Gulf of Thailand, respectively, allowed us to analyse the taxonomy and diversity of the polychaete genusTerebellides(Annelida). Three species were found, namelyTerebellidescf.woolawa,Terebellides hutchingsaespec. nov.(a new species fully described and illustrated), andTerebellidessp. (likely a new species, but with only one available specimen). The new species is characterised by the combination of some branchial (number, fusion and relative length of lobes and papillation of lamellae), and thoracic (lateral lobes and relative length of notopodia) characters and is compared with all species described or reported in the SW Indo-Pacific area, as well as with those sharing similar morphological characteristics all around the world. The taxonomic relevance of the relative length of branchial lobes and different types of ciliature in branchial lamellae for species discrimination in the genus is discussed. A key to allTerebellidesspecies described in SE Indo-Pacific waters is presented.

scholarly journals Morphological Variations of Robusta Coffee As a Response to Different Altitude in Lampung

2019 ◽  
Vol 35 (2) ◽  
pp. 103-118
Author(s):  
Erwin Prastowo ◽  
Rina Arimarsetiowati
Keyword(s):  
Environmental Conditions ◽  
Morphological Characteristics ◽  
Fruit Weight ◽  
Leaf Length ◽  
Qualitative Variable ◽  
Morphological Variations ◽  
Agronomic Practices ◽  
Robusta Coffee ◽  
Length Width ◽  
Key Issues

The coffee growth is considered to depend, partly, on the environmental condition at which they develop to accomplish both vegetative and generative stages. An exploratory survey in Lampung aimed at investigating the morphological characteristics of 13 Robusta coffee accessions growing on different altitudes.Local superior coffee clones were selected from eight farms, and subjected to identifications. Three key issues were concerned for both quantitatively, i.e. plant components of leaves, branches, and fruits, and qualitatively such as leaves and fruit characteristics, i.e. colour and shape. The analysis shows a similarity of about 60% of total qualitative variable identified among different accessions. The remaining characters are suggested to be more varying such as flush colour, leaf surface, ripe fruit colour, and stipule shape. Furthermore, a quantitative analysis showed a higher level of similarity for fruit characters, i.e. fruit length, -width, and -thickness, and to a slightly lower level for leaf characteristics, i.e. leaf length and -width, and number of productive branches. It was revealed that some variables, i.e. fruit weight; leaf and seed; and canopy characteristics, explaining the morphological variation of coffee throughout the accessions. Furthermore, cluster analysis may indicated a possible similarity of coffee morphologies either from area with different or the same environmental conditions. A high heterogeneity related to environmental conditions, genotypic variations, plant nutritional status, and agronomic practices, which unable to confirm in the present study, may limit the specific conclusions.

scholarly journals Variasi Morfologi Bambu Tali [Gigantochloa apus (Schult.F.) Kurz.] pada berbagai ketinggian tempat di Sub Daerah Aliran Sungai Pelus

Biosfera ◽  
2015 ◽  
Vol 32 (1) ◽  
pp. 42 ◽  
Author(s):  
Tria Fauzi Prabandani Hakim ◽  
Pudji Widodo ◽  
Eming Sudiana
Keyword(s):  
Leaf Blade ◽  
Morphological Character ◽  
Morphological Characteristics ◽  
Close Correlation ◽  
Sea Levels ◽  
Morphological Variations ◽  
Blade Length ◽  
Central Java ◽  
Altitudinal Difference ◽  
Difference Effect

A study on the morphological variation of tali bamboo [Gigantochloa apus (Schult.f.) Kurz] has been conducted at various altitudes of Sub Watershed Pelus Banyumas, Central Java. This study was aimed at determining the morphological variations in relation to altitudes above sea levels. The method used was survey with stratified sampling.  The variables measured included culm diameter, culm internode length, culm sheath length and width, ovate-triangular blade length and width, leaf blade length and width, stem color and hairs, and altitude. The results of this study indicated that the altitudinal difference effect some morphological characteristics of tali bamboos such as: 1) green young seedling with black hairs found at 200-299 m and 300-399 m asl. 2) morphological variations are effected by altitude. Tali bamboo grows optimally at the altitude of 400 to 499 m asl. The results of regression analysis showed that the altitude has a relatively close correlation with somes of morphological character of tali bamboo.

scholarly journals Diversity of Phytophthora Communities across Different Types of Mediterranean Vegetation in a Nature Reserve Area

Forests ◽  
2020 ◽  
Vol 11 (8) ◽  
pp. 853
Author(s):  
Mario Riolo ◽  
Francesco Aloi ◽  
Federico La Spada ◽  
Saverio Sciandrello ◽  
Salvatore Moricca ◽  
...  
Keyword(s):  
Vegetation Type ◽  
Morphological Characteristics ◽  
Natura 2000 ◽  
Physicochemical Characteristics ◽  
Phytophthora Species ◽  
Nerium Oleander ◽  
Specific Objective ◽  
Different Types ◽  
Terrestrial Habitats ◽  
Sarcopoterium Spinosum

Research Highlights: Protected natural areas are a reservoir of Phytophthora species and represent the most suitable sites to study their ecology, being less disturbed by human activities than other environments. Background and Objectives: The specific objective of this study was to correlate the diversity and distribution of Phytophthora species with the vegetation in aquatic, riparian and terrestrial habitats within a protected area in Eastern Sicily, Southern Italy. Materials and Methods: Environmental samples (water and soil) were sourced from two streams running through the reserve and six different types of vegetation, including Platano-Salicetum pedicellatae, the Sarcopoterium spinosum community, Myrto communis-Pistacietum lentisci, Pistacio-Quercetum ilicis,Oleo-Quercetum virgilianae and a gallery forest dominated by Nerium oleander (Natura 2000 classification of habitats). Phytophthora species were recovered from samples using leaf baiting and were classified on the basis of morphological characteristics and sequencing of internal transcribed spacer (ITS) regions of ribosomal DNA (rDNA). Results: As many as 11 Phytophthora species, within five different ITS clades, were identified, including P. asparagi, P. bilorbang, P. cryptogea, P. gonapodyides, P. lacustris, P. multivora, P. nicotianae, P. oleae, P. parvispora, P. plurivora and P. syringae. No Phytophthora species were found in the Sarcopoterium spinosum comm. Phytophthora asparagi, P. lacustris and P. plurivora were the prevalent species in the other five plant communities, but only P. plurivora was present in all of them. Overall aquatic species from clade 6 (100 out of 228 isolates) were the most common; they were recovered from all five types of vegetation, streams and riparian habitats. Phytophthora populations found in the Platano-Salicetum pedicellatae and Oleo-Quercetum virgilianae show the highest diversity, while no correlation was found with the physicochemical characteristics of the soil. Conclusions: The vegetation type and the aquatic or terrestrial habitat were identified as major environmental factors correlated with the diversity of Phytophthora communities in this reserve.

scholarly journals Morphological Characteristics and Clinical Significance of Different Types of Tumor Vessels in Patients with Stages I-IIA of Squamous Cervical Cancer

2020 ◽  
Vol 2020 ◽  
pp. 1-20 ◽  
Author(s):  
Marina A. Senchukova ◽  
Elena V. Makarova ◽  
Elena I. Shurygina ◽  
Nadezhda N. Volchenko
Keyword(s):  
Cervical Cancer ◽  
Clinical Significance ◽  
Lymphatic Vessels ◽  
Morphological Characteristics ◽  
Solid Component ◽  
Contact Type ◽  
Tumor Microvessels ◽  
Squamous Cervical Cancer ◽  
Different Types ◽  
Early Cervical Cancer

The determination of factors associated with progression of cervical cancer is important, both for a recurrence risk assessment and for determining optimal treatment tactics. Previously, we showed the prognostic value of different types of tumor microvessels (MVs) in gastric and breast cancer. The object of this research was to study the morphology and clinical significance of different tumor microvessels in early cervical cancer. A total of 65 archived paraffin blocks of patients with I-IIA stages of squamous cervical cancer were investigated. Samples were stained with Mayer hematoxylin and immunohistochemically using antibodies to CD34, podoplanin, HIF-1a, and Snail. The eight types of tumor MVs differed in morphology were identified. It was established that only the dilated capillaries (DСs) with weak expression of CD34, the contact type DCs, the capillaries in tumor solid component, and the lymphatic vessels in the lymphoid and polymorphic cell infiltrates of tumor stroma are associated with clinical and pathological characteristics of early cervical cancer. Preliminary results also suggest that a combination of fragmentation in tumor solid component and the contact type DCs may predict a recurrence of early cervical cancer. Given the small number of cervical cancer recurrences, the predictive significance of the described markers requires a more thorough examination.

scholarly journals A Quick Method for the Texture Mapping of Meshes Acquired by Laser Scanner

2012 ◽  
Vol 9 ◽  
pp. 17-26 ◽  
Author(s):  
Francesco Gabellone ◽  
Ivan Ferrari ◽  
Francesco Giuri
Keyword(s):  
Laser Scanner ◽  
Morphological Characteristics ◽  
Texture Mapping ◽  
Operational Effectiveness ◽  
Quick Method ◽  
Simple Method ◽  
Infra Red ◽  
Different Types ◽  
Infra Red Images ◽  
False Colour

The methodology described in this article was developed in connection with two different projects and entails texture mapping by time-of-flight laser scanner. In order to verify its operational effectiveness and applicability to other contexts, sites with extremely different morphological characteristics were studied. The basic rationale of this simple method derives from the need to obtain different types of mapping – including RGB real colour images, infra-red images, false colour images from georadar scans, etc. – from the same scanned surface. To resolve this problem, we felt that the most appropriate step was to obtain a UVW mapping based on the high resolution real colour images and then use the samecoordinates to rapidly map the false colour images as well. Thus we fitted a device to the camera to determine its trajectory (similar to a gunsight); when scanned by the laser scanner in the same context as the monument, it makes it possible to know the exact coordinates of the viewpoint.

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