Morphophysiological aspects of the digestive tract in IV stage larvae of Bradysia impatiens (Diptera: Sciaridae).

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dc.contributor.authorMarín Cruz, Victor Hugo
dc.contributor.authorRodríguez Navarro, Silvia
dc.contributor.authorBarranco Florido, Juan Esteban
dc.contributor.authorTerrón Sierra, Roberto Alejandro
dc.contributor.authorCibrián Tovar, David
dc.contributor.corporatenameSociedad Colombiana de Entomología - Socolenspa
dc.contributor.corporatenameUniversidad del Vallespa
dc.contributor.editorMontoya Lerma, James
dc.date.accessioned2021-07-22T01:23:37Z
dc.date.available2021-07-22T01:23:37Z
dc.date.issued2019-12-31
dc.description.abstractThe morphological, cytological and physiological aspects of the digestive tract of the siarid Bradysia impatiens fourth-instar larvae were studied using bright-field microscopy. The division of the digestive tract into the stomodeum (foregut), the mesenteron (midgut) and the proctodeum (hindgut) was observed; the second of which being composed of endocrine, regenerative, column-shaped cells. The larvae did not present a crop; hence digestion of the bolus occurs in the midgut. They have two well-developed gastric caeca, where it can be assumed that great nutrient absorption takes place. The peritrophic membrane is type II, with a pore size that allows the passage of molecules up to 150 kDa, and which divides the midgut into two regions: the endoperitrophic and ectoperitrophic spaces. There are four Malpighian tubules present. The midgut has a pH gradient ranging from mildly alkaline in the foregut to neutral in the caeca and hindgut. It has a recirculation mechanism stretching from the endoperitrophic to the ectoperitrophic space and vice versa, which improves digestion and optimizes enzyme production. The morphophysiological features observed in B. impatiens larvae confirm that these organisms are well-adapted detritivores. Additionally, the peritrophic membrane protects the midgut from pathogenic agents.spa
dc.format.extent1 recurso en línea (9 páginas)spa
dc.format.mimetypeapplication/pdfspa
dc.identifier.urihttps://hdl.handle.net/10893/20806
dc.language.isospaspa
dc.publisherUniversidad del Vallespa
dc.publisher.placeColombiaspa
dc.relation.citationendpage9spa
dc.relation.citationissue2spa
dc.relation.citationstartpage1spa
dc.relation.citationvolume45spa
dc.relation.ispartofjournalRevista Colombiana de Entomologíaspa
dc.rights.accessrightsinfo:eu-repo/semantics/openAccessspa
dc.subject.ddcEstomodeo
dc.subject.ddcMesenterón
dc.subject.ddcProctodeo
dc.subject.ddcMembrana peritrófica
dc.subject.ddcCiegos gástricos
dc.subject.ddcDiptera
dc.subject.ddcSciaridae
dc.titleMorphophysiological aspects of the digestive tract in IV stage larvae of Bradysia impatiens (Diptera: Sciaridae).spa
dc.typeArtículo de revistaspa
dc.type.coarhttp://purl.org/coar/resource_type/c_6501spa
dc.type.contentTextspa
dc.type.driverinfo:eu-repo/semantics/articlespa
dc.type.redcolhttp://purl.org/redcol/resource_type/ARTspa
dc.type.versioninfo:eu-repo/semantics/publishedVersionspa
dspace.entity.typePublication
oaire.accessrightshttp://purl.org/coar/access_right/c_abf2spa
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85spa
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Revista Colombiana de Entomología