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Food variety of lesser whistling duck in Malaysian lakes

Food distribution and diversity is a significant factor that determines the habitat and site selection of avian species. Its effects on the health, reproduction, survival rate, diversity indices, population structure and home range of avian species. In wetland ecosystem, bird home range and populat...

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Main Authors: Onwuka, Martins Chukwuemeka, Rajpar, Muhammad Nawaz, Zakaria, Mohamed
Format: Article
Language:English
Published: Universiti Putra Malaysia Press 2020
Online Access:http://psasir.upm.edu.my/id/eprint/80961/1/FOOD.pdf
http://psasir.upm.edu.my/id/eprint/80961/
http://www.pertanika.upm.edu.my/pjst/browse/regular-issue?article=JST-2027-2020
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spelling my.upm.eprints.809612021-08-18T01:22:18Z http://psasir.upm.edu.my/id/eprint/80961/ Food variety of lesser whistling duck in Malaysian lakes Onwuka, Martins Chukwuemeka Rajpar, Muhammad Nawaz Zakaria, Mohamed Food distribution and diversity is a significant factor that determines the habitat and site selection of avian species. Its effects on the health, reproduction, survival rate, diversity indices, population structure and home range of avian species. In wetland ecosystem, bird home range and population structure is influenced by richness and diversity of food resources and availability of suitable foraging sites. The aim of the study was to ascertain the food variety of Lesser Whistling Duck – Dendrocygna javanica in Paya Indah Wetland Reserve (PIWR). A scan method was employed from strategic places or blinds using a spotting scope and binocular to determine the food selection and density by Distance sampling point count method. Food items were categorised into the aquatic plants (AP), aquatic invertebrates (AIV), aquatic vertebrates (AV), terrestrial plants (TP), terrestrial vertebrates (TV) and terrestrial invertebrates (TIV). Distance analysis indicated that PIWR harboured 3.88 ± 0.00 birds per ha (n = 188 individuals). In addition, the results revealed that higher bird relative abundance of Lesser Whistling Duck concentrated in the shallow of Belibis lake that was rich in submerged and emergent vegetation (Eleocharis dulcis, Philydrum lanuginosum, Utricularia vulgaris, and Potamogeton perfoliatus). Kruskal–Wallis H test showed that food items were significantly different. Lesser Whistling Duck showed strong correlationship with AIV (r2 = 1.00, P < 0.05) and negative relationship with water TP (r2 = –0.061, P< 0.05). The regression model highlighted that Lesser Whistling Duck significantly preferred aquatic invertebrates, r2 = –0.686±0.68; P<0.001 and aquatic vertebrates, –0.459±0.26) than other food items. The results revealed that shallow marshybased lakes rich in aquatic vertebrates and invertebrates harboured higher population of Lesser Whistling Ducks to utilize it and performed multiple activities than other habitats. Universiti Putra Malaysia Press 2020 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/80961/1/FOOD.pdf Onwuka, Martins Chukwuemeka and Rajpar, Muhammad Nawaz and Zakaria, Mohamed (2020) Food variety of lesser whistling duck in Malaysian lakes. Pertanika Journal of Science and Technology, 28 (4). pp. 1329-1343. ISSN 0128-7680; ESSN: 2231-8526 http://www.pertanika.upm.edu.my/pjst/browse/regular-issue?article=JST-2027-2020 10.47836/pjst.28.4.11
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Food distribution and diversity is a significant factor that determines the habitat and site selection of avian species. Its effects on the health, reproduction, survival rate, diversity indices, population structure and home range of avian species. In wetland ecosystem, bird home range and population structure is influenced by richness and diversity of food resources and availability of suitable foraging sites. The aim of the study was to ascertain the food variety of Lesser Whistling Duck – Dendrocygna javanica in Paya Indah Wetland Reserve (PIWR). A scan method was employed from strategic places or blinds using a spotting scope and binocular to determine the food selection and density by Distance sampling point count method. Food items were categorised into the aquatic plants (AP), aquatic invertebrates (AIV), aquatic vertebrates (AV), terrestrial plants (TP), terrestrial vertebrates (TV) and terrestrial invertebrates (TIV). Distance analysis indicated that PIWR harboured 3.88 ± 0.00 birds per ha (n = 188 individuals). In addition, the results revealed that higher bird relative abundance of Lesser Whistling Duck concentrated in the shallow of Belibis lake that was rich in submerged and emergent vegetation (Eleocharis dulcis, Philydrum lanuginosum, Utricularia vulgaris, and Potamogeton perfoliatus). Kruskal–Wallis H test showed that food items were significantly different. Lesser Whistling Duck showed strong correlationship with AIV (r2 = 1.00, P < 0.05) and negative relationship with water TP (r2 = –0.061, P< 0.05). The regression model highlighted that Lesser Whistling Duck significantly preferred aquatic invertebrates, r2 = –0.686±0.68; P<0.001 and aquatic vertebrates, –0.459±0.26) than other food items. The results revealed that shallow marshybased lakes rich in aquatic vertebrates and invertebrates harboured higher population of Lesser Whistling Ducks to utilize it and performed multiple activities than other habitats.
format Article
author Onwuka, Martins Chukwuemeka
Rajpar, Muhammad Nawaz
Zakaria, Mohamed
spellingShingle Onwuka, Martins Chukwuemeka
Rajpar, Muhammad Nawaz
Zakaria, Mohamed
Food variety of lesser whistling duck in Malaysian lakes
author_facet Onwuka, Martins Chukwuemeka
Rajpar, Muhammad Nawaz
Zakaria, Mohamed
author_sort Onwuka, Martins Chukwuemeka
title Food variety of lesser whistling duck in Malaysian lakes
title_short Food variety of lesser whistling duck in Malaysian lakes
title_full Food variety of lesser whistling duck in Malaysian lakes
title_fullStr Food variety of lesser whistling duck in Malaysian lakes
title_full_unstemmed Food variety of lesser whistling duck in Malaysian lakes
title_sort food variety of lesser whistling duck in malaysian lakes
publisher Universiti Putra Malaysia Press
publishDate 2020
url http://psasir.upm.edu.my/id/eprint/80961/1/FOOD.pdf
http://psasir.upm.edu.my/id/eprint/80961/
http://www.pertanika.upm.edu.my/pjst/browse/regular-issue?article=JST-2027-2020
_version_ 1709668986760724480
score 13.211869

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