The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.

Placobdelloides siamensis is a glossiphoniid leech with a short life cycle. In a laboratory setting, ten mature P. siamensis left their host (a turtle) after feeding for approximately three days and initiated copulation. The adults spent 3-4 days gestating before depositing eggs (272.8±62.9 eggs/clu...

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Main Authors: Krittiya Chiangkul, Poramad Trivalairat, Watchariya Purivirojkul
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2020-01-01
Series:PLoS ONE
Online Access:https://doi.org/10.1371/journal.pone.0244760
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spelling doaj-df1c8e2be2d64e8f9f6231419a0f51152021-03-25T05:32:40ZengPublic Library of Science (PLoS)PLoS ONE1932-62032020-01-011512e024476010.1371/journal.pone.0244760The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.Krittiya ChiangkulPoramad TrivalairatWatchariya PurivirojkulPlacobdelloides siamensis is a glossiphoniid leech with a short life cycle. In a laboratory setting, ten mature P. siamensis left their host (a turtle) after feeding for approximately three days and initiated copulation. The adults spent 3-4 days gestating before depositing eggs (272.8±62.9 eggs/clutch; range: 186-359 eggs/clutch). The eggs then changed from a creamy white to a creamy brownish color before hatching. Hatching occurred after incubation on the parent's ventral surface for 5-7 days. The transparent brood, with a single pair of red eyes, spent a couple of weeks under the venters of their parents. After this period, they left their parents and grew to maturity in 10-15 days; leeches were considered mature when their color was similar to that of their parents and they performed their first copulation. In addition, the mature leeches survived for 163 days on one feeding.https://doi.org/10.1371/journal.pone.0244760
collection DOAJ
language English
format Article
sources DOAJ
author Krittiya Chiangkul
Poramad Trivalairat
Watchariya Purivirojkul
spellingShingle Krittiya Chiangkul
Poramad Trivalairat
Watchariya Purivirojkul
The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
PLoS ONE
author_facet Krittiya Chiangkul
Poramad Trivalairat
Watchariya Purivirojkul
author_sort Krittiya Chiangkul
title The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
title_short The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
title_full The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
title_fullStr The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
title_full_unstemmed The life cycle of the Siamese shield leech, Placobdelloides siamensis Oka, 1917.
title_sort life cycle of the siamese shield leech, placobdelloides siamensis oka, 1917.
publisher Public Library of Science (PLoS)
series PLoS ONE
issn 1932-6203
publishDate 2020-01-01
description Placobdelloides siamensis is a glossiphoniid leech with a short life cycle. In a laboratory setting, ten mature P. siamensis left their host (a turtle) after feeding for approximately three days and initiated copulation. The adults spent 3-4 days gestating before depositing eggs (272.8±62.9 eggs/clutch; range: 186-359 eggs/clutch). The eggs then changed from a creamy white to a creamy brownish color before hatching. Hatching occurred after incubation on the parent's ventral surface for 5-7 days. The transparent brood, with a single pair of red eyes, spent a couple of weeks under the venters of their parents. After this period, they left their parents and grew to maturity in 10-15 days; leeches were considered mature when their color was similar to that of their parents and they performed their first copulation. In addition, the mature leeches survived for 163 days on one feeding.
url https://doi.org/10.1371/journal.pone.0244760
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