Skip to main content

A histological study on the development of the digestive system of Pseudosciaena crocea larvae and juveniles

Buy Article:

$43.00 plus tax (Refund Policy)

The ontogenetic development of the gut and accessory organs in large yellow croaker Pseudosciaena crocea was investigated using light microscopy from hatching up to the juvenile stage (40 days post hatch, dph). At 3 dph (mean ± s.d., 4·1 ± 0·1 mm total length, LT), coinciding with the buccopharynx opening, larvae started to feed exogenously, and the gut consisted of a well‐developed buccopharynx, a partially‐differentiated oesophagus and an intestine divided in three regions (anterior intestine, intermediate intestine and rectum). Yolk reserves were not completely depleted at the onset of exogenous feeding, and a period of mixed nutrition was observed up to 6 dph (4·3 ± 0·1 mm LT), when yolk was definitively exhausted. Important morphological changes occurred at the end of the larval period, coinciding with metamorphosis. At 17 dph (6·8 ± 0·6 mm LT), pyloric caeca differentiated at the junction of the pyloric stomach and the anterior intestine. Gastric glands were first observed at 21 dph (9·2 ± 1·2 mm LT), coinciding with the morphological development of the stomach in three different regions (cardiac, fundic and pyloric) according to the histological characteristics of their mucosa. At this age, large longitudinal folds appeared in the median and posterior oesophageal mucosa. These morphological and histological features suggested the achievement of a digestive system characteristic of large yellow croaker juveniles and adults.
No References
No Citations
No Supplementary Data
No Article Media
No Metrics

Keywords: Pseudosciaena crocea; digestive system; histology; large yellow croaker; ontogenetic development

Document Type: Regular Paper

Affiliations: 1: Key Laboratory of Mariculture, Education Ministry of China, Ocean University of China, Qingdao 266003, China, 2: Unité Mixte INRA-IFREMER de Nutrition des Poissons, Centre de Brest, BP 70, 29280 Plouzané, France and

Publication date: 2005-10-01

  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more