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Volume 2 Issue 12, November 2022 ISSN 2181-2020
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8
ISSN: 2181-2020
Volume 2 Issue 12 (2022): EJAR
Volume 2 Issue 12 (2022): EJAR
MORPHOMETRIC CHARACTERS OF THE FAMILY OF
GRYLLIDAE IN THE CONDITIONS OF THE FERGANA
VALLEY
Yuldasheva Shokhista Kobiljonovna
Associate Professor, Department of Zoology and General Biology,
Fergana State University, Fergana, Republic of Uzbekistan
E-mail: sh.k.yuldasheva@fdu.uz
Khamidov Abubakir Kodirjon ogli
Doctoral student of Fergana State University
E-mail: khamidov.abubakr1994@gmail.com 902921022
Fergana, Uzbekistan.
https://doi.org/10.5281/zenodo.15321582
ARTICLE INFO
ABSTRACT
Received: 24
th
April 2025
Accepted: 29
th
April 2025
Online: 30
th
April 2025
,
This article is aimed at an in-depth analysis of morphometric
characters of the family Gryllidae. The study identified key
parameters such as div length, head, eyes, antennae, and legs
between species, and used statistical analysis methods to study
their differences and the influence of environmental conditions.
KEYWORDS
Gryllidae,
morphometric
characters,
taxonomic
classification,
ecological
adaptation,
statistics,
morphological
analysis,
diagram,
graphic
illustrations.
INTRODUCTION
The family Gryllidae is a widespread and ecologically important group of insects
belonging to the order Orthoptera. Their morphometric characteristics are of great
importance not only in identifying species, but also in analyzing their ecological adaptations,
life forms and evolutionary trends. Therefore, this article discusses the identification of the
main morphometric characters of the Gryllidae family, methods of measurement and their
dependence on various factors, as well as their taxonomic significance.
MATERIALS AND METHODS
The following steps were taken to collect Gryllidae samples within the framework of the
study: The mountainous and foothill regions of Uzbekistan - open forests, pastures, mountain
slopes and dry steppes - were selected as the habitats of the Gryllidae. The ecological
conditions and climatic changes of each region were taken into account, so that species
adapted to different living conditions were observed.
Fieldwork was carried out using a specially designed net and light hand tools (e.g. fine-
toothed nets, fine knives and collection containers). When collecting each sample, attention
was paid to preserving the natural state of the chirping insects during their activity. During
the sampling process, at least 30
–
50 individuals were collected from each area to isolate
individual species and assess their importance in the habitat.
The collected samples were quickly placed in special containers for analysis in the
laboratory. In order to prevent biological changes during sample storage, methods of storing
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them in cold and dark places, under protective conditions, were used. Detailed information
about the location, time and environmental conditions of each sample was also recorded.
Seasonal changes were also taken into account during the sampling process. For
example, samples were collected in the spring and summer months, when chirping insects are
most active, as this is when the species is at its maximum number and activity.
The following statistical measures were used to analyze the results of the study: The
mean value, variance, and standard deviation were determined for each morphometric
parameter, and the general trends of the data were assessed.
RESULTS
Crickets show significant diversity in div length. In the studied species, div length
usually varies from 10 mm to 50 mm. This parameter is primarily taken into account when
identifying species.
Small species: in the range of 10
–
20 mm.
Medium species: in the range of 20
–
35 mm.
Large species: in the range of 35
–
50 mm.
The head of the cricket family (Gryllidae) is one of the main parameters of interspecific
differentiation. The following aspects are taken into account: The head usually has a round or
spherical shape, and this shape serves as an important criterion for classifying species. The
overall size and proportions of the head can vary significantly in different species.
In crickets, the eyes are large, convex, and located at the front of the head. They provide
visual sensitivity and enhance the ability to observe the environment across species. The size
and location of the eyes, as well as the general structure of the head, are used to determine
morphometric differences between different species.
Other sensory organs located on the head, such as antennae, also provide additional
information in distinguishing species. Antennae are recognized as important sensory organs.
Their morphometric characteristics are of great importance in determining interspecific
differentiation. The length of cricket antennae varies significantly between species. In some
species, the antennae make up 60
–
80% of the div length. This parameter is used to identify
species and assess their ecological adaptation. Antennae are often multi-segmented, with each
segment having a thin and threadlike shape. This segmentation increases the accuracy of the
sensory organ and plays a major role in receiving chemical and physical signals from the
environment. Antennae are the main chemosensory organs for crickets, which detect odors
and other molecules in the air, helping them to find food and mate. With this organ, insects
respond to changes in their environment.
The legs of crickets determine their jumping ability. Forelegs: Strongly developed, serve
as feeding and sometimes as protection. Hindlegs: Long and strong femurs, designed for
jumping. Elytra: Males are usually well developed, providing acoustic signaling and visual
protection. Females may have smaller or completely absent elytra.
Habitat and climatic conditions have a significant impact on the morphometric
parameters of crickets:
In warmer regions, species tend to have larger div sizes, because heat and resources
are more abundant. In colder regions, they may have a smaller and more compact structure,
which may be due to energy conservation.
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Morphometric characters also play an important role in determining genetic differences
between species. The dispersion of morphometric parameters reflects genetic adaptations
depending on the habitat. Based on the measurements, it is possible to determine
evolutionary relationships and divergence processes between species.
A total of 100 chirping specimens were collected from different regions in the study.
№
Body parts
Average
Importance of size
1
Body length
32.5 ± 4.2 mm
This parameter is used as a key indicator in
determining the overall size of insects.
2
Head width
7.0 ± 0.8 mm
Head shape and proportions are important in
distinguishing between species.
3
Eye diameter
2.5 ± 0.3 mm
Large, convex eyes enhance the ability of
crickets to sense their surroundings.
4
Antenna length
22.8 ± 3.5 mm
Antenna segmentation and length are used to
determine differences in chemical sensation
between species.
5
Foreleg length
13.0 ± 1.6 mm
This measurement is used to shed light on the
feeding and locomotor characteristics of an
insect
6
Hind leg length
19.5 ± 2.0 mm
the presence of strong musculature for
jumping is reflected in this parameter.
7
Elytra (wings)
length
12.2 ± 1.7 mm
The development and structure of the elytra
show differences between male and female
species
Based on the measurements obtained, statistical and correlation analyses were used,
and significant differences were found between all parameters at the p < 0.05 level. This
constitutes the main scientific basis for determining interspecific morphometric differences
and the influence of environmental conditions.
These results constitute a set of important morphometric measurements used in further
studying the taxonomic classification, evolutionary relationships, and ecological adaptations
of the cricket family (Gryllidae).
The accuracy of morphometric characters of crickets is used as a key indicator in
classifying species and identifying new species. Based on morphometric parameters, even
small differences between species are identified, strengthening their taxonomic status.
Measurements are used to determine evolutionary relationships, adaptive changes, and
ecological segmentation between species. Morphometric analysis also serves to shed light on
ecological conditions and regional differences. Changes in the natural environment, such as
vegetation, climate, and geological features, have a significant impact on morphometric
parameters. Differences in size between species indicate regional divergence and local
adaptations.
SUMMARY
This article presents the main results of a study on the morphometric characteristics of
the cricket family (Gryllidae). The main parameters such as div length, head and eyes,
EURASIAN JOURNAL OF ACADEMIC RESEARCH
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antennae, legs and elytra were determined, and the influence of habitat and environmental
conditions on their morphology was shown. The results of statistical analysis clearly showed
interspecific differences and confirmed that they can be used to clarify taxonomic accuracy
and evolutionary relationships. Future studies are expected to serve to create a more
complete system of the cricket fauna by combining morphometric and genetic analyses.
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