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Distribution, abundance, and diversity of wild giant freshwater prawn (macrobrachium spp.) populations in Laguna Lake 6

By: Torion, Joseph Roy E.; De Goyo, Mark Andrew P.; Dela Paza, Zharmagne G.; Yupano, Henrich Edward Louise 4 0 16, [, ] | [, ] |

Contributor(s): 5 6 [] |

Language: Unknown language code Summary language: Unknown language code Original language: Unknown language code Series: ; 4507846Edition: Description: 151 pagesContent type: text Media type: unmediated Carrier type: volumeISBN: ISSN: 2Other title: 6 []Uniform titles: | | Related works: 1 40 6 []Subject(s): -- 2 -- 0 -- -- | -- 2 -- 0 -- 6 -- | 2 0 -- | -- -- 20 -- | | -- -- -- -- 20 -- | -- -- -- 20 -- --Genre/Form: -- 2 -- Additional physical formats: DDC classification: | LOC classification: | | 2Other classification:

Contents:

Action note: In: Summary: ABSTRACT: Genus Macrobrachium are freshwater prawns that are popularly cultured due to high market demand. Their natural habitats, such as Laguna Lake, are utilized for aquaculture which is heavily impacted by human activities, resulting in the decline of the lake and the supposedly naturally occurring populations of Macrobrachium. The assessment of Macrobrachium spp. distribution, abundance, and diversity in the lake provide an insight into the status of their wild populations in relation to the environmental factors measured in this study. Sampling was conducted with a set of shrimp traps in each of the six 6) sampling stations in the West and Central Bay of Laguna Lake. In the whole sampling period, a total of 28 individuals of Macrobrachium were caught, 22 of which were adults, 5 were juveniles, and 1 was post-larva and had an overall 1:0.40 male-to-female ratio (i.e., 1 ovigerous female recorded). All specimens corresponded well with the morphological description of M. nipponense (De Haan, 1849). Molecular identification, on the other hand, confirmed the species to be M. nipponense through PCR amplification and sequencing of COl and 16S markers. The presence of only one (1) species in M. nipponense uncovered no species diversity of wild populations in Laguna Lake, which also indicates that it was the most abundant in terms of CPUE and the most dominant in all sampling stations. The individual occurrences have positive correlations with pH, temperature, and sand while there is a negative correlation with DO, OM, silt, and clay. The present study might be the first to accurately report the M. nipponense in Laguna Lake. Other editions:

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Item type	Current location	Home library	Collection	Call number	Status	Date due	Barcode	Item holds
Book	PLM	PLM Filipiniana Section	Filipiniana-Thesis	QH540 T67 2023 (Browse shelf)	Available		FT8341

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Undergraduate Thesis: 9BS in Biology major in Ecology) - Pamantasan ng Lungsod ng Maynila, 2023 56

ABSTRACT: Genus Macrobrachium are freshwater prawns that are popularly cultured due to high market demand. Their natural habitats, such as Laguna Lake, are utilized for aquaculture which is heavily impacted by human activities, resulting in the decline of the lake and the supposedly naturally occurring populations of Macrobrachium. The assessment of Macrobrachium spp. distribution, abundance, and diversity in the lake provide an insight into the status of their wild populations in relation to the environmental factors measured in this study. Sampling was conducted with a set of shrimp traps in each of the six 6) sampling stations in the West and Central Bay of Laguna Lake. In the whole sampling period, a total of 28 individuals of Macrobrachium were caught, 22 of which were adults, 5 were juveniles, and 1 was post-larva and had an overall 1:0.40 male-to-female ratio (i.e., 1 ovigerous female recorded). All specimens corresponded well with the morphological description of M. nipponense (De Haan, 1849). Molecular identification, on the other hand, confirmed the species to be M. nipponense through PCR amplification and sequencing of COl and 16S markers. The presence of only one (1) species in M. nipponense uncovered no species diversity of wild populations in Laguna Lake, which also indicates that it was the most abundant in terms of CPUE and the most dominant in all sampling stations. The individual occurrences have positive correlations with pH, temperature, and sand while there is a negative correlation with DO, OM, silt, and clay. The present study might be the first to accurately report the M. nipponense in Laguna Lake.

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