Journals / Ekoloji / 2013 / Cilt: 22 - Sayı: 88

Siyah taçlı gece balıkçılının(nycticorax nycticorax) parana nehri'nin aluvyal vadisindeki sulak alanda beslenmesinin araştırılması

Diet of black-crowned night-herons (nycticorax nycticorax) in a wetland of the parana river ́s alluvial valley

Journal
Ekoloji
Pages
43–50
Publication Date
2022-10-17
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

Grasslands and Aquatic vegetation were units of vegetation and environment selected more frequently.

📌 3 Key Takeaways

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Objective & Hypothesis:We analysed the feeding ecology of Nycticorax nycticorax based on fourty individuals captured on the Carabajal Island (Santa Fe, 31o39’S, 60o42’W), determining the minimum sample, index of relative importance (IRI), size of prey, feeding efficiency, dietary selectivity, amplitude of the trophic niche, circadian rhythm of feeding activity, and habitat preference.
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Key Findings & Data:The trophic spectrum was made up of 16 taxonomic entities, mainly fishes (IRI= 9.100), followed by insects (IRI= 1.650), and crustaceans (IRI= 600).
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Conclusion & Impact:Grasslands and Aquatic vegetation were units of vegetation and environment selected more frequently.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

We analysed the feeding ecology of Nycticorax nycticorax based on fourty individuals captured on the Carabajal Island (Santa Fe, 31o39’S, 60o42’W), determining the minimum sample, index of relative importance (IRI), size of prey, feeding efficiency, dietary selectivity, amplitude of the trophic niche, circadian rhythm of feeding activity, and habitat preference. The trophic spectrum was made up of 16 taxonomic entities, mainly fishes (IRI= 9.100), followed by insects (IRI= 1.650), and crustaceans (IRI= 600). The highest percentage of prey size was found in the range of 61-80 mm. The amplitude of the trophic niche ranged between 2.55 and 5.22, and the feeding efficiency between 92.3% and 99%. In relation to dietary selectivity, the correlation between abundance of prey in stomachs and abundance of prey in the study area yielded significant results (r = 0.41, P > 0.001). The rhythm of feeding activity showed high activity very early in the morning, decreasing towards noon, and increasing again at dusk. Grasslands and Aquatic vegetation were units of vegetation and environment selected more frequently.

Özet

Nycticorax necticorax'ın beslenme ekolojisi Carabajal Adası'ndan (Santa Fe, 31o32' S, 60o42' W) yakalanan 40 bireye dayalı olarak incelenmiştir. Minimum örnek, bağıl önem indeksi(IRI), yem boyutu, beslenme randımanı, diyet seçiciliği, trofik niş amplitüdü, beslenme aktivitesinin sirkadyen ritmi ve habitat tercihi tespit edilmiştir. Trofik spektrum 16 taksonomik entiteden oluşmaktadır. Önce balıklar(IRI=9.100), sonra böcekler(IR I=1.650) ve kabuklular(IRI=600) gelmektedir. Yem boyutu en fazla 61-80 mm aralığındadır. Trofik niş amplitüdü 2.55-5.22 aralığında, beslenme randımanı %92,3-%99 aralığındadır. Diyet seçiciliğiyle ilgili olarak yemin midedeki ve araştırma alanındaki bulunma bolluğu arasındaki korelasyon önemli bulunmuştur(r=0,41, P>0,001). Beslenme aktivitesinin ritmi sabahın erken saatlerinde yüksek olup, öğleye doğru azalamakta ve akşam vakti tekrar yükselmektedir. Vejetasyon ve çevre olarak en fazla çayırlar ve sucul vejetasyon tercih edilmiştir.

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Cite This Article

QUIROGA, M., LEON, E., BELTZER, A., OLGUIN, P. (2022). Siyah taçlı gece balıkçılının(nycticorax nycticorax) parana nehri'nin aluvyal vadisindeki sulak alanda beslenmesinin araştırılması. Ekoloji, Cilt: 22 - Sayı: 88, 43–50. https://ajindex.com/articles/499014

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