Macroinvertebrates associated in sargassum spp
Upcoming SlideShare
Loading in...5

Like this? Share it with your network


Macroinvertebrates associated in sargassum spp



This is our research on Invertebrates.

This is our research on Invertebrates.



Total Views
Views on SlideShare
Embed Views



1 Embed 1 1



Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
Post Comment
Edit your comment
  • The second highest number of individuals are in Family Toxopneustidae of Phylum Echinodermata ( Tripnuestes gratilla )
  • as they are attached to the blade of the seaweeds.

Macroinvertebrates associated in sargassum spp Presentation Transcript

  • 1. Macroinvertebrates Associated in Sargassum spp. in Maribago, Cebu Manolong, Julius Balatayo, Annelyn Gem Jayme Anna Freya
    • Seagrasses and seaweeds are
    • home to a diverse group of marine
    • animals (Karleskint et al. 2006).
    • Sargassum is one of the most
    • abundant algae in the marine waters. It belongs to the genus of brown (class Phaeophyceae) macroalga (seaweed) in the order Fucales.
    • The Sargassum beds play an important ecological role in the intertidal and subtidal levels . (Castillo 2008).
  • 3. Objectives:
    • To identify the associated macroinvertebrates living on the Sargassum spp.
    • Observe the relationships between the macroinvertebrates associated with Sargassum spp.
  • 4. Significance of the Study
    • This study will inform people on the macroinvertebrates living on the Sargassum spp. near the USC Maribago Marine Station.
    • It will also contribute to the future studies of macroinvertebrates associated with the Sargassum beds. And its ecological relationship as this is not well-studied compared to vertebrate species.
  • 5.
    • Through this study, researchers also want the community to be aware of the ecological importance and indirect economic value of these Sargassum beds.
  • 6. MATERIALS AND METHODS Ocular visit Collection of specimens Preservation with 80% ethyl alcohol Measurement and Documentation Identification of specimens
  • 7. Figure 1. The study site (Google Earth) Study site
    • A total of 130 specimens were collected and there were 24 species, 15 genera and 4 phyla.
    • The macroinvertebrates associated with Sargassum spp. in the eastern coast of Mactan Island, Cebu, revealed the presence of a rich variety of gastropods and echinoderms.
  • 9.
    • There are more juvenile organisms found than adults based on their length which showed dependence of juveniles on the Sargassum spp. possibly for the attachment, shelter, and food source.
  • 10. Fig. 1 Abundance of different kinds of species in every Phylum
  • 11. Phylum Mollusca Euplica brunnidentata Astraea calcar Clypeomorus batillaria Pictocolumbella ocellata
  • 12. Phylum Echinodermata Tripneustes gratilla Salmacis sphaeroides Synapta maculata Unidentified
  • 13. Phylum Porifera Callyspongia sp. 1 Callyspongia sp. 2 Haliclona cymaeformis Callyspongia sp. 3
  • 14. Phylum Cnidaria Unidentified
  • 15.
    • Most number of Individuals:
    • 1. Astraea calcar (Fam.Turbinidae, Phylum Mollusca)
    • 2. Tripneustes gratilla (Fam.Toxopneustidae, Phylum Echinodermata )
  • 16. Fig. 2 Different Families in Phylum Mollusca
  • 17. Figure 3. Abundance of individuals in Family Turbinidae
  • 18. Astraea phoebia Astraea heliotropium Astraea calcar Astraea calcar
  • 19.
    • Most macroinvertebrates found in the Sargassum beds are juveniles
    • --Juvenile gastropods have the most number of individuals collected.
    Euplica brunnidentata
  • 20.
    • Some adult echinoderms were spotted usually near the holdfast of the Sargassum spp. especially the sea urchins ( Salmacis sphaeroides and Tripnuestes gratilla)
    • The abundance of the fauna in seaweeds is also due to habitat preference and not just for the escape from predators (Bell and Destoby 2000).
    Tripneustes gratilla
  • 21. SUMMARY
    • The Sargassum beds located near the man-made island of the Maribago Bluewaters yielded 24 species of macroinvertebrates under 4 Phyla.
    • In terms of number of individuals, the Astraea calcar (Mollusca) and Tripneustes gratilla (Echinodermata) were the most abundant.
  • 22.
    • The Sargassum beds are important grounds for several juveniles that are vulnerable and susceptible to predators and they may provide food to different organisms in the coastal area.
    • Sargassum bed is essential ecologically because of its possible role in maintaining the biodiversity by offering food and protection to the juveniles.
    • Extensive sampling with the use of appropriate sampling methods to allow quantitative analysis of patterns observed.
    • Experiments on why juveniles are more attracted to the upper portion of the Sargassum.
    • To the people who helped and made this study possible;
    • Ms. Annie Diola
    • Ms. Belinda Longakit
    • Mr. Dave Valles
    • Special thanks to;
    • Herman Tan
    • Jerome Gonzales
    • Jardine Villarba
    • Venus Canonigo
    • Char lynne Rentuza
    • Luke Reggie Balatayo
  • 25. Bell, Johann D., Destoby Mark, 2000. Abundance of Macrofauna in Dense Seagrass is due to habitat preference, not predation. Oecologia Vol. 68, No. 2 (1986), pp. 205-209. <> <Accessed 2011 Sept. 23> Castillo, Alvin. 2008. Fauna Asociada a mantos de Sargassum (Ochrophyta: Fucales) en El Sauzoso, Baja California Sur, México. Centro Interdesciplinario de Ciensas Marinas.World Wide Web. <Accessed 2011 Sept. 23> Karleskint, G.J., Turner, R., Small, J.W. 2006.Introduction to Marine Biology, 2 nd ed. Thomsone Brooks/Cole, USA. REFERENCES