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American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

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ABSTRACT 

The article provides information about the economic importance of the species "Deroceras reticulatum Muller" and 

"1774 Candaharia levanderi Simroth, 1901" found in the village of Machai, Boysun district. 

KEYWORDS 

Boysun District, Machai Village, land molluscs, Deroceras reticulatum, Candaharia lavender, economic importance. 

INTRODUCTION 

Considering the economic importance of land molluscs 

from an economic point of view, firstly, according to 

the literature [5, 6], most land molluscs act as 

intermediate hosts in the spread of various helminthic 

diseases, and secondly, molluscs are herbivorous 

polyphagous animals, and one species can cover a wide 

range of plants, especially which is a source of human 

food: strawberries, cabbage, tomatoes, cucumbers, 

  Research Article 

 

ECONOMIC SIGNIFICANCE OF "DEROCERAS RETICULATUM MULLER" 

AND "1774 CANDAHARIA LEVANDERI SIMROTH, 1901" SPECIES 
 

Submission Date: May 08, 2023, Accepted Date:  May 13, 2023,  

Published Date: May 18, 2023  

Crossref doi: https://doi.org/10.37547/ajahi/Volume03Issue05-04 

 

 

Abdulazizova Shoira Karimovna 
Termez State University, Docent. Termez. Uzbekistan 

 

Norkobilova Ugiloy Kholmumin Kizi 
Termez State University, Master. Termez. Uzbekistan 

 

Abdulloeva Dilnoza Boboismoilovna 
Termez State University, Master. Termez. Uzbekistan 

 

Rashidova Gurdofarid Erkinovna 
Termez State University, Master. Termez. Uzbekistan 

 

Kayimova Nodira Ravshan Kizi 
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. 

 

https://theusajournals.com
https://doi.org/10.37547/ajahi/Volume03Issue05-04


Volume 03 Issue 05-2023 18 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

sprouts of all legumes and vegetables, leguminous 

crops, especially winter wheat and barley from grain 

crops. 

In general, when talking about the economic 

importance of land molluscs, it should be noted that 

their economic damage can be different in different 

regions. For example, if the fodder plants of Boisun 

mountain range are severely damaged by "C. 

lavender", this species is infected with helminth larvae 

in Kohitang mountain range and acts as an 

intermediate host. 

In general, all terrestrial molluscs are herbivorous 

polyphagous animals, but slime worms cause more 

damage to plants than shell molluscs, and a number of 

species are considered plant pests. 

For example, "D. reticulatum" lives mainly in open 

biotopes. In more anthropogenic biotopes, they live 

under branches, rocks, in earth cracks, and the damage 

caused by them differs from the damage caused by 

other pests. They damage different types of plants in 

different ways.  

"D. reticulatum" species is one of the most voracious 

slimes, and their intensive feeding on plant leaves or 

fruits depends on the air temperature. It was 

determined that this species fed on cucumbers planted 

in the open fields in Machai village, Boisun district, and 

caused damage to cucumber seedlings (Table 1). 

Table 1 

Damage caused to cucumber seedlings by Dinoceras reticulate species (on 10 m2 area) 

Research 

line 

The number 

and 

condition of 

seedlings 

(two ears) 

The number of cucumbers Total 

infected 

cucumber 

seedlings in % 

Undamaged 

seedlings 

Damaged 

part of the leaf 

plate is eaten 

(pictures 5.2-1.2) 

two leaves 

completely 

eaten (Fig. 

5.2-3)  

1-raw 35 17 7 11 51,4 

2- raw 35 19 7 9 45,7 

3- raw 35 21 8 6 40 

4- raw 35 23 5 7 34,3 



Volume 03 Issue 05-2023 19 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

5- raw 35 25 6 4 30,3 

6- raw 35 25 6 4 28,6 

7- raw 35 20 8 7 42,8 

8- raw 35 18 8 9 48,5 

9- raw 35 17 12 6 51,4 

10- raw 35 16 10 9 54,2 

Total 350 201 77 72 42,57 

 

Table 1 data analysis shows that there are a total of 350 

cucumber seedlings in a 10 m2 area, of which a total of 

149 seedlings are affected to varying degrees. The 

damage rate is higher in the outer lanes and decreases 

as you move towards the middle lanes. This is due to 

the fact that the place where the slugs live is close to 

the outer rows and the population density is high, so 

the level of damage to the seedlings is also high. As you 

go to the middle rows, the number of slugs decreases, 

and accordingly, cucumber seedlings are less 

damaged. 

D. reticulatum also damages cucumber fruit to varying 

degrees from the end of May to the beginning of June. 

It mainly starts eating the cucumber fruit by first 

carving the skin part from a certain place and ends up 

eating 30-40% of the fruit completely. Also, D. 

reticulatum species is common in biotopes in the hilly 

region, and feeds on the soft part of the leaves of 

various plants. For example, 4 maggots eat a plant leaf 

15 times larger in 1.5 hours. 

Another economic importance of land molluscs is that 

they act as intermediate hosts in the transmission of 

dangerous helminth diseases in many mammals and 

birds. 

According to the literature [1, 4, 5, 6], all 8 types of 

nudibranchs distributed in the studied area act as 

intermediate hosts to one degree or another. 

Currently, the taxonomic composition of terrestrial 

molluscs that participate as intermediate hosts of 

helminths in Uzbekistan A. Pazilov, A. Kuchbaev [5], 

the taxonomic composition of helminth larvae found in 

terrestrial molluscs A. Kuchbaev [2], A.E. Kuchbaev, M. 

Egamberdiev and others. is being studied by [3]. 

However, the study of the degree of contamination of 

land mollusks with helminth larvae, which are common 

in the Surkhan-Sherabad valley and its surrounding 

mountains, is currently fragmentary. This problem 

remains open in the rest of the regions, while it was 

partially studied by [3]. 

Therefore, we have studied the level of helminth larvae 

infection of some species common in the study area.  



Volume 03 Issue 05-2023 20 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

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Among the common land molluscs that participate as 

an intermediate host in the study area, C. lavenderi 

species is the dominant species in terms of population 

density compared to other species. This species is 

common in all altitude regions. 

The degree of infection of C. lavenderi species with 

helminth larvae was studied in the southeastern part of 

the Kohitang mountain range from the village of 

Aktash to the village of Vandob and from there in the 

north-west direction, in the areas of the Vandob 

section of the Surkhan state reserve.  

According to the results of the conducted research, the 

species C. lavenderi is unevenly distributed by altitude 

regions and biotopes. For example, in the desert 

region: among the grass on the banks of streams, 

under the trees in gardens, among the plant cover in 

the undeveloped areas of the land near water bodies, 

in the hill region: on the slopes where semi-shrub 

plants grow and among the stone piles, in the stone 

piles between the grass in the land near the water 

bodies, in the mountain in the region, among shrubs 

and trees, living under stones between grass plants, 

the population density and level of helminth 

infestation are as follows (Table 2). 

According to the data in the table, the dynamics of 

invasion of C. lavenderi species by helminth larvae 

differ by biotopes and altitude regions. For example, in 

the desert region, 1 out of 60 molluscs distributed 

among plants under trees in gardens is infected with 

larvae, and the infestation is equal to 1.66%, while in 

those living among vegetation in undeveloped areas 

near water bodies, the infestation is equal to 12.30%, in 

the hilly region, the same and in such a biotope, this 

indicator is 13.33%. In the mountain region, 1 out of 60-

65 molluscs is affected, equal to 1.53%, 1.66%. 

Table 2 

Distribution of the species C. lavenderi by altitude regions and biotopes and infestation level by helminth larvae 

Researched 

biotopes and the 

population density of 

molluscs in them 

Altitude regions 

Desert  Hill Mountain 

T
o

ta
l s

tu
d

ie
d

 

D
am

ag
e

d
 

IE
 %

 

T
o

ta
l s

tu
d

ie
d

 

D
am

ag
e

d
 

IE
 %

 

T
o

ta
l s

tu
d

ie
d

 

D
am

ag
e

d
 

IE
 %

 

Between the grass 

on the banks of the ditch 

(7-8 per 1m2) 

 

 

5

5 

 

 

3 

 

 

5,

45 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 



Volume 03 Issue 05-2023 21 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

Between plants 

under trees in gardens (5-6 

per 1m2) 

 

 

 

  

60 

 

 

 

   

1 

 

 

 

 

1,66 

 

 

 

- 

 

 

 

- 

 

 

 

- 

 

 

 

- 

 

 

 

- 

 

 

 

- 

Vegetation cover in 

undeveloped areas near 

water bodies (10-12 per 

1m2) 

 

 

 

 

 

  

65 

 

 

 

 

 

  

8 

 

 

 

 

 

 

12,3 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

Slopes with semi-

shrub plants (8-9 per 1m2) 

 

 

 

- 

 

 

 

- 

 

 

 

- 

 

 

 

  

60 

 

 

 

 

4 

 

 

 

 

6,66 

 

 

 

- 

 

 

 

- 

 

 

 

- 

Between grasses 

and under piles of stones in 

lands near water bodies 

(13-15 per 1m2) 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

  

60 

 

 

 

 

 

8 

 

 

 

 

 

 

13,33 

 

 

 

 

 

- 

 

 

 

 

 

- 

 

 

 

 

 

- 

Between shrubs and 

trees (12-14 per 1m2) 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

 

65 

 

 

 

1 

 

 

 

1,53 



Volume 03 Issue 05-2023 22 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

Servi 

Under stones 

between grasses (10-12 per 

1m2) 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

- 

 

 

 

60 

 

 

 

1 

 

 

 

1,66 

 

According to the results of the research, the high level 

of invasion of land molluscs distributed in biotopes 

with helminth larvae depends on the density of the 

mollusc population based on the characteristics of the 

biotope and its microclimate. For example, in the 

desert region under the vegetation cover of 

undeveloped areas near water bodies or in such a 

biotope in the hilly region, the population density of 

molluscs is high (12-15 molluscs per 1 m2), and the level 

of infestation with helminth larvae is 12.30% to 13.33%. 

constitutes 

Therefore, the higher the density of molluscs in the 

population, the higher the level of infestation with 

helminth larvae. 

However, in the mountain region of the Kohitang 

mountain range, the population density of molluscs is 

high, but the invasion rate is low (Table 2). This is due 

to the fact that the research area in the mountain 

region is in the Vandob section of the Surkhan State 

Reserve, and the use of these lands as pasture is 

prohibited. This situation results in less contact 

between the mollusc and the larva, and accordingly 

infestation may be lower.  

According to the results of the conducted research, 

slugs cause great damage to strawberries, cabbage, 

tomatoes, cucumbers, sprouts of all polys and 

vegetable crops, legumes, grain crops, winter wheat 

and barley, including D. reticulatum species to a 

significant extent to cucumber sprouts and fruits. will 

cause damage. 

It was found that the level of mollusk damage to plants 

is directly related to air temperature, humidity and 

their density in the population. 

The high level of infestation of land molluscs with 

helminth larvae depends on the density of the mollusk 

in the population based on the nature of the biotope 

and its microclimate, that is, the higher the density in 

the population, the higher the level of infestation of 

the mollusk with helminth larvae. 

REFERENCES 

1. Абдулазизова Ш. Биологическое 

разнообразие наземных моллюсков Сурхан-

Шерабадской долины и окружающих её 

горных хребтов.: Автореф. дис. ...PhD по 

биол.наук. – Ташкент, 2019. – 20 с. 

2. Кучбоев А.Э. Популяционная экология, 

систематика нематод семейства 

Protostrongylidae и функционально-

метаболические процессы в системе 

“паразит-хозяин”.: Автореф. дис. ...док. 

биол.наук. – Ташкент, 2009. – 43 с.  

3. Кучбаев А.Э., Эгамбердиев М., Каримова Р., 

Пазилов А. Наземные моллюски-

промежуточные хозяева протостронглид // 

Узбекский биол.  журн. – Ташкент, 2018. -№1. 

– С. 15-20. 

4. Лихарев И.М., Виктор А.Й.  Слизни фауны 

СССР и  сопредельных стран (Gastropoda 

Terrestria Nuda)  Фауна СССР. Моллюски. –  



Volume 03 Issue 05-2023 23 

                 

 
 

   
  
 

American Journal Of Agriculture And Horticulture Innovations  
(ISSN – 2771-2559) 
VOLUME 03 ISSUE 05     Pages: 17-23 

SJIF IMPACT FACTOR (2021: 5. 705) (2022: 5. 705) (2023: 7. 471)  
OCLC – 1290679216   

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 
Publisher: Oscar Publishing Services 

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Ленинград: Наука, 1980. –Т.3. –Вып.5. – № 122. 

–  437 с. 

5. Пазилов А., Кучбаев А. Ўзбекистонда уй ва 

ёввойи ҳайвонлар гельминтларининг оралиқ 

хўжайини-қуруқлик моллюскалар 

(Аниқлагич-Атлас). – Тошкент, 2017. – 79 б. 

6. Увалиева К.К. Наземные моллюски 

Казахстана и сопредельных территорий. – 

Алма-Ата: Наука Каз. ССР, 1990. –  224 с. 

 


