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Publication
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| Title of Article |
Morphology of mandibles and food size in two fairy shrimps (Branchiopoda: Anostraca) from Thailand
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| Date of Acceptance |
23 May 2017 |
| Journal |
| Title of Journal |
Journal of Crustacean Biology |
| Standard |
ISI |
| Institute of Journal |
The Crustacean Society |
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| Volume |
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| Year of Publication |
2017 |
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| Abstract |
We analyzed the asymmetrical molar surfaces of two fairy shrimps, Streptocephalus sirindhornae Sanoamuang, Murugan, Weekers & Dumont, 2000 and Branchinella thailandensis Sanoamuang, Saengphan & Murugan, 2002. The peripheral region of the left and right mandibles in both species has several rows of rectangular teeth. Each row has 5–8 small stubby denticles in S. sirindhornae and 6–14 numerous, small, sharp denticles in B. thailandensis. The posteriodorsal region of the left mandible bears one row of 11 large, stout teeth and one row of six large, stout teeth, respectively. The posteriodorsal region of the right mandible in S. sirindhornae has three rows of teeth, whereas in B. thailandensis it has two rows plus a tuft of setae. The intersetular distance of filter-feeding limb endites in B. thailandensis is wider (1.37 ± 0.27 µm) than that of S. sirindhornae (0.38 ± 0.02 µm). These morphological differences affect feeding behaviour. Feeding experiments showed that B. thailandensis can consume larger starch grains than S. sirindhornae. The largest percentages of ingested food size in both immature and mature shrimps are in the 5–30 µm range. Because B. thailandensis tends to mature far earlier than cooccurring S. sirindhornae, we hypothesise that B. thailandensis adults may consume S. sirindhornae nauplii. No evidence of cannibalism was found in the two species. |
| Keyword |
Branchinella thailandensis, cannibalism, filter feeding, molar surface, nauplii, Streptocephalus sirindhornae |
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| Reviewing Status |
มีผู้ประเมินอิสระ |
| Status |
ได้รับการตอบรับให้ตีพิมพ์ |
| Level of Publication |
นานาชาติ |
| citation |
false |
| Part of thesis |
true |
| Attach file |
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| Citation |
0
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Journal Publication
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