SEAFDECINSTITUTIONAL REPOSITORY
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • English 
    • English
    • ไทย
    • 日本語
    • Bahasa Indonesia
    • Bahasa Melayu
    • Burmese
    • Filipino
    • Khmer
    • Lao
    • Tiếng Việt
  • Login
View Item 
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
  •   SEAFDEC Institutional Repository (SIR)
  • 03 SEAFDEC External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
  • Journal Articles
  • AQD Journal Articles
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Larval and early juvenile development of silver therapon, Leiopotherapon plumbeus (Actinopterygii: Perciformes: Terapontidae), reared in mesocosms

Thumbnail
Associated URL
www.aiep.pl
Date
2017
Author
Aya, Frolan
Corpuz, Mark Nell C.
Laron, Manuel A.
Garcia, Luis Maria
Page views
620
Metadata
Show full item record

Cited times in Scopus



Share 
 
Abstract
The silver therapon, Leiopotherapon plumbeus (Kner, 1864), is an endemic and economically important freshwater food fish in the Philippines. The natural populations of this species have been declining during the past years, mainly due to intense fishing pressure, habitat degradation, and introduction of invasive alien species. At present, it is considered a target species for domestication and conservation efforts. Despite several attempts of artificial reproduction and larval rearing, little is known on larval and early juvenile development of silver therapon. The presently reported study was therefore intended to fill this gap in the knowledge by determining the growth and describing body proportions, pigmentation, and fin formation of this fish. Newly hatched larvae were reared in mesocosm tanks at a mean temperature of 29.5°C. Larvae up to 30 days after hatching were sampled at irregular intervals and preserved in 5% buffered formalin. Early development stages for 245 preserved specimens were described in detail with reference to changes in morphology, growth and body proportions, pigmentation, and fin formation. Five developmental stages of silver therapon were identified: yolk sac larva (1.88 mm TL), preflexion (2.51 mm TL), notochord flexion (4.50-8.27 mm TL), postflexion larva (6.90-12.21 mm TL), and early juvenile (>13.40 mm TL). Growth was isometric for eye diameter and gape size whereas positive allometry was observed for body depth, head length, and preanal length. Some body proportions showed abrupt changes from preflexion to postflexion larvae before it stabilized during the early juvenile stage. Pigmentation in the form of stellate and punctate melanophores increased with developmental stage, with larvae becoming heavily pigmented from postflexion to early juvenile stage. These morphological changes, together with the full complement of fin rays and squamation observed in specimens larger than 13.4 mm TL, suggest the attainment of the juvenile stage of this species. These morphological changes may explain the food and feeding habits during the early life stages of silver therapon which is critical to their survival and recruitment in the wild and in a mesocosm hatchery environment.
Keywords
growth morphology body proportion fish larvae
URI
http://hdl.handle.net/10862/3295
Suggested Citation
Aya, F., Corpuz, M. N. C., Laron, M. A., & Garcia, L. M. (2017). Larval and early juvenile development of silver therapon, Leiopotherapon plumbeus (Actinopterygii: Perciformes: Terapontidae), reared in mesocosms. Acta Ichthyologica et Piscatoria, 47(4), 347-356. https://doi.org/10.3750/AIEP/02222 
DOI
10.3750/AIEP/02222
Subject
fishing effort; freshwater fishes; fish; environmental degradation; domestication; food; fisheries; allometry; inland water environment; developmental stages; commercial fishing; population; biology; fins; introduced species; hatching; growth; fishing; endemic species; larvae; nature conservation; induced ovulation; biodegradation; tanks; chromatophores; juveniles; rearing techniques; species; mesocosms; food fish; hatcheries; egg yolk; reproduction; animal morphology; meristic counts; catch-effort; Philippines; yolk sac; land degradation; pigmentation; habits
Taxonomic term
Leiopotherapon plumbeus
Collections
  • AQD Journal Articles [1249]

Related items

Showing items related by title, author, creator and subject.

  • Thumbnail

    Endangered fish species and seed release strategies in Vietnam 

    Chien, Thai Ngoc; Khanh, Nguyen Huu; Truong, Nguyen Xuan (Aquaculture Department, Southeast Asian Fisheries Development Center, 2006)
    World economic growth has led to considerable changes in the ecosystem in many places and has raised concerns on global resource management particularly aquatic animal resources and their living environment. In Vietnam, ...
  • Thumbnail

    Status of threatened species and stock enhancement activities in the Philippine fisheries 

    Lopez, Nelson A. (Aquaculture Department, Southeast Asian Fisheries Development Center, 2006)
    The paper provides the lists of fisheries related species perceived to be extinct, rare, threatened and endangered as covered under the CITES, IUCN and the Bureau of Fisheries and Aquatic Resources (BFAR)-Fisheries ...
  • Thumbnail

    Fishery stock enhancement in Malaysia 

    Ibrahim, Kamarruddin; Ilias, Zaidnuddin (Aquaculture Department, Southeast Asian Fisheries Development Center, 2006)
    Species extinction is a global issue that requires all nations to practice sustainable management. This paper aims to examine the status of endangered fisheries species in Malaysia, and highlight some resource management ...

© SEAFDEC 2025
Contact Us
 

 

Browse

All of SIRCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

My Account

Login

Statistics

View Usage Statistics
Related Links
SEAFDEC/TD IRSEAFDEC/AQD IRSEAFDEC/MFRDMD IRSEAFDEC/IFRDMD IR

© SEAFDEC 2025
Contact Us
 

 

EXTERNAL LINKS DISCLAIMER

This link is being provided as a convenience and for informational purposes only. SEAFDEC bears no responsibility for the accuracy, legality or content of the external site or for that of subsequent links. Contact the external site for answers to questions regarding its content.

If you come across any external links that don't work, we would be grateful if you could report them to the repository administrators.

Click DOWNLOAD to open/view the file.

Download