Morphometrics, length-weight relationship and ecological factors affecting the habitat of Pila globosa (Swainson, 1822) (Mesogastropoda: Pilidae) located in Rajshahi University campus

Saha, B. P.; Jahan,; Hossain, Mosharaf

doi:10.3329/bjsir.v51i2.28098

Cited by 2 publications

(2 citation statements)

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“…Seasonal length-weight relationships indicated that the exponent value for both sexes is quite high during the monsoon, which may be due to more suitable environmental conditions and better availability of favourable food items for growth and maturation of gonads. Overall exponent value for pooled data indicated that the species has negative allometric growth, which agrees with the earlier report on P. globosa from Bangladesh waters (Saha et al, 2016). The relative condition factor values for all the specimens ranged from 0.84 to 1.21, with an average of 1.01 and a maximum Kn value was obtained for males (1.07).…”

Section: Discussionsupporting

confidence: 89%

“…It is also used as an animal feed additive in freshwater aquaculture in this region due to the high protein content of their meat. Some studies have been carried out earlier on its length-frequency distribution, morphometry, length-weight relationship and condition factor from India and adjacent countries (Saha et al, 2016;Panda et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Biometric evaluation of the freshwater snail Pila globosa (Swainson, 1822) from the river Ganga in Bihar, India

Ahirwal¹,

Sarma²,

Singh³

et al. 2023

Indian J. Fish.

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Length-frequency distribution, morphometry, length-weight relationship, relative condition factor and sex ratio of the apple snail Pila globosa (Swainson, 1822) were studied from the river Ganga. A total of 922 specimens were collected during July 2020 to June 2021, ranging from 3.53 to 62.99 g and from 16.49 to 59.78 mm (shell length). Length-frequency distribution revealed that more than 50% of male and female specimens were within 35 to 45 mm in length and only few (1.58%) female specimens were observed in the higher length (>55 mm). Females have significantly longer shells and are heavier than males. Shell length has the strongest correlation with shell width (r=0.974) and the least with penultimate whorl length (r=0.855). Length-weight relationship, indicated that the species has negative allometric growth (b<3). The relative condition factor was 1.07 for males, 1.00 for females and 1.01 for pooled data. Sex ratio (M:F) statistically deviated from the hypothetical ratio of 1:1, indicating a heterogeneous snail population (1:1.9, p<0.05). Keywords: Ganga River, Growth pattern, Shell morphology, Snail Sex ratio

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Section: Discussionsupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Biometric evaluation of the freshwater snail Pila globosa (Swainson, 1822) from the river Ganga in Bihar, India

Ahirwal¹,

Sarma²,

Singh³

et al. 2023

Indian J. Fish.

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Temporal morphometric analyses of Pila globosa in India for its use in aquaculture and food industry

Panda

Pati

Bal

et al. 2021

JoBAZ

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Background Although the apple snail Pila globosa is used as indicator species for human consumption locally and as fish feed, research on it in general is very scanty. It is used in food industry, in aquaculture as fish bait and used as food in many regions of India and many other countries, but research on it has been started in the 1970s. Only 40 articles are available on this organism in PubMed indicating an urgent need of basic research on it especially work on its spatiotemporal morphometry Therefore, sampling of P. globosa was done from different parts of India in different seasons (summer, winter and rainy), and different morphometric studies were performed on this organism to draw baseline information. Analysis was conducted to study morphometry, the relationship between shell length and the weight and relative condition factor of Indian apple snail Pila globosa collected from five zones (east, west, north, south and centre) of India during 2018–2019 year. Results The shell length (SL) (46.5 ± 13.33), shell width (SW) (40.22±11.5 mm), spire length (SPL) (2.99±0.15 mm), base length (BL) (12.53±2.94 mm), aperture length (AL) (21.95±4.36 mm), aperture width (AW) (2.74±0.47 mm) and shell weight (WT) (31.08±13.76 g) were observed to be varied among the individual sampled across India. Different relationships for SL/SW (Log SW=0.9889 Log SL + 0.9444), SL/SPL (Log SPL = 0.1452 Log SL+0.3815), SL/BL (Log BL=0.7789 Log SL+0.5814), SL/AL (Log AL= 0.6518 Log SL+0.9111) and SL/AW (Log AW=0.4475 Log SL+0.1422) were observed by considering shell length as basic index. The relationship between shell length and shell weight was found to be Log WT=2.0263 Log SL+0.1098. The relative condition factor revealed uninterrupted and good environmental condition observed for apple snails. A negative allometric growth pattern was observed from the length–weight relationship. Conclusion The environments of apple snail in India are not contaminated, and the results can be used as baseline data in aquaculture for model analysis and can be used as a reference for drawing relationship among different morphometric indices of P. globosa in India, as there is no such information available on it. The data can also be used for mass scale production of P. globosa for consumption by human and use in aquatic industries as fish feed.

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Morphometrics, length-weight relationship and ecological factors affecting the habitat of Pila globosa (Swainson, 1822) (Mesogastropoda: Pilidae) located in Rajshahi University campus

Cited by 2 publications

References 7 publications

Biometric evaluation of the freshwater snail Pila globosa (Swainson, 1822) from the river Ganga in Bihar, India

Biometric evaluation of the freshwater snail Pila globosa (Swainson, 1822) from the river Ganga in Bihar, India

Temporal morphometric analyses of Pila globosa in India for its use in aquaculture and food industry

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