Volume 03 Issue 05-2023
13
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
03
ISSUE
05
Pages:
13-16
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
(2023:
7.
471
)
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
ABSTRACT
The article provides information on the species composition of the representatives of the genus "Deroceras
rafinesque, 1820" found in the Surkhan-Sherabad valley.
KEYWORDS
Surkhan-Sherabad valley, Deroceras rafinesque, gastropod molluscs, economic significance, distribution.
INTRODUCTION
It is known that in recent years, great attention has
been paid to faunistic research in our republic,
including the study of the diversity of molluscs, the
assessment of their current state, the analysis of the
processes of change in them, the development of
measures to protect rare species and fight against
harmful species. is being conducted.
Most gastropods have an external shell, but some have
a reduced shell and are called nudibranchs because
they secrete a lot of mucus from their bodies.
The beautiful and colorful shells of bivalve molluscs
attract not only zoologists, but also collectors, and as a
result, they are now very well studied. However, slime
worms have not yet been fully studied in this regard.
Research Article
SPECIES
COMPOSITION
OF
DEROCERAS
RAFINESQUE,
1820
GENERATION FOUND IN SURKHAN-SHEROBAD VALLEY
Submission Date:
May 08, 2023,
Accepted Date:
May 13, 2023,
Published Date:
May 18, 2023
Crossref doi:
https://doi.org/10.37547/ajahi/Volume03Issue05-03
Abdulazizova Shoira Karimovna
Termez State University, Docent. Termez. Uzbekistan
Kalandarova Oyimjon Muzaffarovna
Termez State University, Master. Termez. Uzbekistan
Yakubova Mutabarhon Taibjon Kizi
Termez State University, Master. Termez. Uzbekistan
Abduvaliyev Javohir Ulugbek Ugli
Termez State University, Student. Termez. Uzbekistan
Journal
Website:
https://theusajournals.
com/index.php/ajahi
Copyright:
Original
content from this work
may be used under the
terms of the creative
commons
attributes
4.0 licence.
Volume 03 Issue 05-2023
14
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
03
ISSUE
05
Pages:
13-16
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
(2023:
7.
471
)
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
Currently, more than 150 species of slime worms are
found in the fauna of the world, of which 24 species are
distributed in Central Asia, and 18 species are
distributed in Uzbekistan.
Therefore, the study of slime worms is of great
theoretical and practical importance. The reason:
firstly, they are a heterogenous group, forming a
complex of animals of different origin and playing an
important role in studying the evolution of
systematically distant groups.
From this point of view, we aimed to determine the
taxonomic composition of slime worms distributed in
the Surkhan-Sherabad valley, ecological-faunistic
analysis, and to determine the composition of
economically important species.
Research materials in the Surkhan-Sherabad valley in
2021 - 2023: Termiz city and surrounding parks and
stream banks, Uchkizil and Oktepa reservoirs, along
the right and left banks of the Surkhandarya river, the
areas from the village of Jairakhona to the South
Surkhan reservoir, Laylakkhana, Azod, Khursand, It
was collected from various biotopes around the
Beshtom villages and from the gardens of the
surrounding villages.
Collection of research materials was carried out
according to the methods of A.Y. Viktor and I.M.
Likharev [3], T.S. Rymzhanov and A.A. Shileyko [5].
According to the results of the conducted research, the
following species of naked slime belonging to the
genus Deroceras were identified from the research
area.
family AGRIOLIMACIDAE Wagner, 1975
DEROCERAS Rafinesque, 1820 generation
Body size does not exceed 60 mm when moving. When
the div shrinks, its expansion corresponds to the
mantle part. The mantle is 1/3 of the entire div.
The div consists of the same colored or black spots,
and sometimes it looks like sprinkles.
It is distributed in the Northern Hemisphere.
Deroceras (Deroceras) laeve Muller, 1774
Material: 18 copies. Picked from the Surkhan-Sherabad
valley, especially from the gardens of the village of
Zhairankhana.
Body structure. This slime worm is mobile, and its div
structure is cylindrical, and when it is contracted, it has
a glove-like appearance. The mantle is rather large,
circular from the back when alive, and triangular after
fixation. During movement, the head and neck are
stretched forward. The keel is short and slightly blunt,
visible only during movement.
The length of the div is up to 25 mm during
movement, 13-15 mm when shortened. When the
mantle is reduced to 10 mm, it is 5-7 mm [4].
Ecology. Common in all biotopes. It lives mainly among
the grasses on the banks of the ditches and among the
rice crops in the irrigated lands [3].
Spread. Common in all regions of the Commonwealth
of Nations. Many countries in the Southern
Hemisphere have been "introduced" by human
activity.
Deroceras (Agriolimax) agreste Linnaeus, 1758
Material: 14 copies were collected from the village of
Jairakhana, South Surkhan reservoir and its
surroundings.
Volume 03 Issue 05-2023
15
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
03
ISSUE
05
Pages:
13-16
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
(2023:
7.
471
)
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
Body structure. The back of the div is slightly convex
or semi-rounded. The mantle occupies 1/3 of the div.
The color of the div is light yellow, and sometimes it
consists of liver-like stripes, there are no black stripes
on the div, if it is blinar - it is unknown.
The length of the div during movement is 35-40 mm
[3].
Ecology. It is found mainly in the plains, in the pre-
mountain region it lives among various grasses on the
banks of streams or under small stones.
Spread.
Widespread
in
all
regions
of
the
Commonwealth of Nations.
Economic importance. In addition to damaging various
crops, the helminth plays an important role as an
intermediate host of diseases.
Deroceras reticulatum Muller, 1774
Material: 19 copies. Collected from different biotopes
in more than 15 places of the study area.
Body structure. The div is rather thick, the back is
convex, and the back part is shortened as a "cline".
Mantle covers 2/5 of the div. The color of adult
animals is light brown. Most of its div is covered with
black-brown, black-brown, spotted stripes.
The length of the div is 35-45 mm, 25 mm in the
reduced state [4].
Ecology. Lives mainly in open biotopes. Avoids
woodland
and
scrub.
Widespread
in
more
anthropogenic biotopes. During the day, it hides under
branches, rocks, in cracks [4].
Spread. Widespread in the territories of the
Commonwealth of Nations, it is considered an
"introducer" brought to the Central Asian countries
[4].
Economic importance. Its main food is the green part
of plants, and it also eats ground fruits. Butterflies
cause great damage to various vegetable crops.
Deroceras sturanyi Simroth, 1889.
The structure of the div and reproductive organ
corresponds to the literature [1, 2, 4, 5].
Morphological structure. The div is thin, the back end
is sharply narrowed. The skin is thin and delicate. The
mantle is relatively long: its back part is located on the
back half of the div. The color is uniform, light or
straw yellow. When fixed, the length is 18-25 mm.
Ecology. Lives in biotopes not far from parks and police
fields [4].
Spread. It is distributed in Central and Eastern Europe
and spread to Central Asian countries under the
influence of anthropogenic forces [4].
Deroceras (Liolytopelte) caucasicum Simroth, 1901
Material: 17 copies. It was collected from various
biotopes around the villages of Laylakkhana, Azod,
Khursand, Beshtom and the gardens of the
surrounding villages.
Body structure. The size of the mantle is 1/3 of the
div. There are 16-18 rows of wrinkles in the middle
part of the div with a hole in the mantle. The color of
the div is variable: brownish-yellow, whitish,
sometimes brownish-black. The neck of the tentacles is
dark, the legs are pale yellow. The front part of the
div is black. The color change of his div directly
depends on the biotope where he lives. Those living in
shady areas have a pale dirty color, and those living in
bright areas have a brownish-yellow color.
Volume 03 Issue 05-2023
16
American Journal Of Agriculture And Horticulture Innovations
(ISSN
–
2771-2559)
VOLUME
03
ISSUE
05
Pages:
13-16
SJIF
I
MPACT
FACTOR
(2021:
5.
705
)
(2022:
5.
705
)
(2023:
7.
471
)
OCLC
–
1290679216
Publisher:
Oscar Publishing Services
Servi
The length of the div during movement is 45-50 mm.
30-35 mm when fixed.
Ecology. Widespread in flat areas. It lives mainly under
the leaves of various plants, among herbaceous plants
[4].
Spread. It is considered an "introductory" species for
the territory of the Caucasus, Central Asia [4].
Economic importance. It causes great damage to
potato, cabbage, and tomato plants.
As a result of the conducted research, it became
known that 5 species are distributed in the Surkhan-
Sherabad valley.
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