Functional Morphology of the Digestive System

Mikami, Satoshi; Takashima, Fumio

doi:10.1002/9780470698808.ch32

Cited by 26 publications

(26 citation statements)

References 28 publications

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“…2b) has a medial and two lateral teeth still more specialized than that of the previous stage and is similar to that of adults of other decapods described in literature (Meiss and Norman, 1977;Kunze and Anderson, 1979;Suthers and Anderson, 1981;Mikami and Takashima, 1994;Brösing et al, 2002). This suggests that the first juveniles of S. curacaoense are able to processes a large quantity of soft and solid food, which they encounter in the benthic environment.…”

Section: Curacaoensesupporting

confidence: 56%

The morphology of the foregut of larvae and postlarva of Sesarma curacaoense De Man, 1892: a species with facultative lecithotrophy during larval development

2006

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Previous study on the resistance of larvae of Sesarma curacaoense submitted to starvation has revealed a facultative lecithotrophy during zoeal stages, but megalopa and first juvenile stages are exclusively feeding stages. In the present study, the gross morphology and fine structure of the foregut of S. curacaoense were investigated during larval, megalopa and first juvenile stages. The foregut of the zoea I show specific setae and a filter press apparently functional. The foregut undergoes changes in the zoea II (last larval stage) with increment of setae number, mainly on the cardiopyloric valve and complexity of the filter press. After metamorphosis to megalopa stage the foregut become rather complex, with a gastric mill supporting a medial and two lateral teeth well-developed. The foregut of the first juvenile is more specialized compared to the previous stage, showing similar characteristics of the decapod adults. These results provide further evidence of facultative lecithotrophic development in the larvae of S. curacaoense. KEYWORDSMorphology, lecithotrophy, foregut, larval development, grapsid crab. A morfologia do estômago de larvas e pós-larvas de PALAVRAS-CHAVEMorfologia, lecitotrofia, estômago, desenvolvimento larval, caranguejo grapsídeo.

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Section: Curacaoensesupporting

confidence: 56%

The morphology of the foregut of larvae and postlarva of Sesarma curacaoense De Man, 1892: a species with facultative lecithotrophy during larval development

2006

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“…The mouthparts of the juvenile I present increasing setae numbers in the endopods. The juvenile stomach became more calcified and visibly complex, with similar characteristics to those found in the foregut of adult decapods described in the scientific literature (Meiss and Norman, 1977;Kunze andAnderson, 1979: Suthers andAnderson, 1981;Mikami and Takashima, 1993;Brösing et al 2002). This indicates that juvenile of L. siriboia became more agile in food capture and they are capable to process solid food available in their bentonic ambient.…”

Section: Developmental Morphology Of Mouthparts and Foregut Of The Lasupporting

confidence: 49%

Developmental morphology of mouthparts and foregut of the larvae and postlarvae of Lepidophthalmus siriboia Felder & Rodrigues, 1993 (Decapoda: Callianassidae)

et al. 2006

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In this study, the gross morphology of the mouthparts and foregut of the ghost shrimp Lepidophthalmus siriboia were investigated from larvae and postlarvae reared in the laboratory. The mouthparts (maxillae and maxillipeds) of the zoeae have a reduced number of setae and spines (or is absent in some individuals), and the foregut, under developed, have few minute setae in the cardiac and pyloric chambers. In contrast, after the metamorphosis into megalopa stage, all feeding appendages have many setae and, the foregut shows a well-developed gastric mill with strong lateral teeth. In the juvenile stage occurs an increase of setae and spines in the mouthparts and the foregut becomes more specialized. These observations strongly suggest that a lecithotrophic development occurs during all zoeal stages but the megalopa and juvenile stages are feeding animals. The functional morphology of the feeding structures of L. siriboia and other decapods will be briefly discussed. KEYWORDSCallianassidae, Lepidophthalmus siriboia, mouthparts, foregut, morphology. Morfologia funcional dos apêndices bucais e do estômago de larvas e pós-larvas de Lepidophthalmus siriboia

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“…The results of this and other studies indicate that a re-evaluation of the common belief that P. japonicus phyllosoma larvae feed strictly on macroscopic diets (Nishida et al, 1990;Mikami and Takashima, 1994;Macmillan et al, 1997) may be warranted. Thus, based on this and previous studies (Rodriguez Souza et al, 1996;Rodriguez Souza et al, 1999;Rodriguez Souza, 1997) it seems fairly secure to say that spiny lobster larvae are able to obtain nutrients in three different ways: by capture and ingestion of large food masses, by oral ingestion of particulate compounds suspended or dispersed in the ambient water, and by direct absorption of dissolved materials through the integument.…”

Section: Discussionmentioning

confidence: 95%

Oral and integumental uptake of free exogenous glycine by the Japanese spiny lobsterPanulirus japonicusphyllosoma larvae

Souza

Strüssmann

Takashima

et al. 2010

Journal of Experimental Biology

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Functional Morphology of the Digestive System

Cited by 26 publications

References 28 publications

The morphology of the foregut of larvae and postlarva of Sesarma curacaoense De Man, 1892: a species with facultative lecithotrophy during larval development

The morphology of the foregut of larvae and postlarva of Sesarma curacaoense De Man, 1892: a species with facultative lecithotrophy during larval development

Developmental morphology of mouthparts and foregut of the larvae and postlarvae of Lepidophthalmus siriboia Felder & Rodrigues, 1993 (Decapoda: Callianassidae)

Oral and integumental uptake of free exogenous glycine by the Japanese spiny lobsterPanulirus japonicusphyllosoma larvae

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