Length-Weight Relationships, Condition Index and Sex Ratio of Mussel <i>Lamellidens corrianus</i> (Lea, 1834) in a Freshwater Lake, Northwest Bangladesh

Mondol, Mostafizur Rahman; Nasrin, Fouzia; Nahar, Dil Afroz

doi:10.1515/cjf-2016-0025

Cited by 5 publications

(3 citation statements)

References 18 publications

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“…Pertumbuhan biasanya digambarkan dalam hal peningkatan ukuran cangkang atau diukur berdasarkan berat, lebar, tebal dan panjang (Sisilia, 2000;Mondol et al, 2016). Menurut Elamin & Elamin (2014), hubungan panjang-berat adalah parameter biologis penting yang diperlukan untuk mengevaluasi pola pertumbuhan suatu spesies (Elamin & Elamin, 2014).…”

Section: Pembahasanunclassified

GROWTH PATTERNS OF THE PEARL OYSTER Pinctada margaritifera IN NORTH SULAWESI WATERS

Kalesaran

Lumenta

Mingkid

2021

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The pearl oyster Pinctada margaritifera (Linnaeus, 1758) or black lip pearl oyster is a marinebivalves with important economic value. This Indo-Pacific species is found in abundance in the waters of North Sulawesi, but cultivation activities have not been optimized. Growth information is important for aquaculture activities because it is a useful indicator to determine the health of pearl oysters and environmental suitability (Moussa, 2013). The purpose of this study was to determine the growth pattern of P. margaritifera pearl shells in the waters of North Sulawesi. Species P. margaritifera were collected at a depth of 2-20 m in the waters of North Minahasa Bahoi, Arakan waters South Minahasa and Talengen waters Sangihe Islands, North Sulawesi Province. The morphometric parameters observed included shell length (PC), shell height (TC), shell thickness (tC), and total weight (BT). The relationship between length, height, shell thickness and total weight was analyzed by regression equation. Morphometric measurements of P. margaritifera showed average shell length (PC) of 95.26 mm (Arakan waters), 81.15 mm (Talengen waters) and 70.19 mm (Bahoi waters). The growth pattern of P. margaritifera in the waters of Bahoi, Arakan and Talengen, North Sulawesi Province was allometric negative. This means that the increase in length, height and thickness of the shell is faster than the total weight.

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Section: Pembahasanunclassified

GROWTH PATTERNS OF THE PEARL OYSTER Pinctada margaritifera IN NORTH SULAWESI WATERS

Kalesaran

Lumenta

Mingkid

2021

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“…We focused on the taxonomic groups, pollutants, and response variables that are commonly reported in the literature. Following methods from Collins (1992) and Mondol, Nasrin, and Nahar (2016), we were able to convert length traits into weight measures, which added three more studies (Haimi, Knott, Selonen, & Laurikainen, 2006;Venier et al, 2006;Yap, Cheng, Ong, & Tan, 2013) and 15 additional datapoints. We recorded the metal concentration, the response of treatments and controls at each concentration, the total sample size, and the SD.…”

Section: Me Thodsmentioning

confidence: 99%

Mixed evidence for adaptation to environmental pollution

Loria

Cristescu

Gonzalez

2019

Evolutionary Applications

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Adaptation to pollution has been studied since the first observations of heavy metal tolerance in plants decades ago. To document micro‐evolutionary responses to pollution, researchers have used phenotypic, molecular genetics, and demographic approaches. We reviewed 258 articles and evaluated the evidence for adaptive responses following exposure to a wide range of pollutants, across multiple taxonomic groups. We also conducted a meta‐analysis to calculate the magnitude of phenotypic change in invertebrates in response to metal pollution. The majority of studies that reported differences in responses to pollution were focused on phenotypic responses at the individual level. Most of the studies that used demographic assays in their investigations found that negative effects induced by pollution often worsened over multiple generations. Our meta‐analysis did not reveal a significant relationship between metal pollution intensity and changes in the traits studied, and this was probably due to differences in coping responses among different species, the broad array of abiotic and biotic factors, and the weak statistical power of the analysis. We found it difficult to make broad statements about how likely or how common adaptation is in the presence of environmental contamination. Ecological and evolutionary responses to contamination are complex, and difficult to interpret in the context of taxonomic, and methodological biases, and the inconsistent set of approaches that have been used to study adaptation to pollution in the laboratory and in the field. This review emphasizes the need for: (a) long‐term monitoring programs on exposed populations that link demography to phenotypic, genetic, and selection assays; (b) the use of standardized protocols across studies especially for similar taxa. Approaches that combine field and laboratory studies offer the greatest opportunity to reveal the complex eco‐evolutionary feedback that can occur under selection imposed by pollution.

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“…where the constants k and α must be determined. This equation has been successfully used in physiological investigations and applied in the management of mussel production (Gosling 1992, Mondol et al 2016. Once the allometric relation is established, shell measurement or growth is sufficient to estimate biomass and flesh production.…”

Section: Chilensis Lossesmentioning

confidence: 99%

Relationships between off-bottom bivalve aquaculture and the Magellanic steamer duck Tachyeres pteneres in southern Chile

Medina-Vogel¹,

Pons

Schlatter³

2019

Aquacult. Environ. Interact.

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The interactions between aquaculture farms and endemic marine birds in the Northern Hemisphere have been a recurrent topic in the past decades. In the Northern Hemisphere, shellfish aquaculture farms have diverse effects on wildlife populations, and the substantial predation on mussels by birds can lead to culling of the birds by farm managers. In this work, we assessed the interaction between Chilean blue mussel Mytilus chilensis farms and the Magellanic steamer duck Tachyeres pteneres, an endemic duck of southern Chile whose population is thought to be declining. In particular, we assessed the importance of the Chilean blue mussel in the Magellanic steamer duck's diet, and we estimated the magnitude of losses to aquaculture due to predation by the ducks. Between March 1988 and February 1989, observations and sampling collections were performed around a bivalve aquaculture farm in Yaldad Bay (Chiloé Island, Chile). In contrast to what happens in the Northern Hemisphere, we infer that Chilean blue mussel farms do not promote the increase of the Magellanic steamer duck population in Chile: the population dynamics appear to be responding to other habitat variables. Moreover, our estimate for the losses due to predation was less than 1.6% of the annual farm production in Chile. Despite the fact that sampling was done almost 30 years ago, this study is the most recent one investigating the ecology and social behaviour of the Magellanic steamer duck and its relationship with bivalve aquaculture.

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Length-Weight Relationships, Condition Index and Sex Ratio of Mussel Lamellidens corrianus (Lea, 1834) in a Freshwater Lake, Northwest Bangladesh

Cited by 5 publications

References 18 publications

GROWTH PATTERNS OF THE PEARL OYSTER Pinctada margaritifera IN NORTH SULAWESI WATERS

GROWTH PATTERNS OF THE PEARL OYSTER Pinctada margaritifera IN NORTH SULAWESI WATERS

Mixed evidence for adaptation to environmental pollution

Relationships between off-bottom bivalve aquaculture and the Magellanic steamer duck Tachyeres pteneres in southern Chile

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