Preliminary assessment of Tripneustes gratilla populations in Seagrass Beds of the Spermonde Archipelago, South Sulawesi, Indonesia

Abstract Microdebris contamination of marine organism has become a major concern. As a detritivore, Tripneustes gratilla also has the opportunity to be contaminated. This study aims to determine microdebris contamination in T. gratilla, including the form and size of the microdebris. This research was conducted at three islands, i.e. Barrang Lompo, Badi, and Kondong Bali. Ten individuals were collected from each island. The digestive tract of spesies was taken, then H2O2 was added to dissolve the organic matter. Flotation was carried out by adding NaCl. Microdebris was observed using stereo microscope, and selected particle then was analysed by FT-IR Microscope. The abundance of microdebris in T. gratilla was ranged from 3.4 to 14.8 particles/individual. Tripneustes gratilla from Badi Island showed the highest levels, contained 14.8 particles/individual. Fiber and fragment were found in all the samples. Fiber was the most common microdebris and consisted of more than half of the total microdebris in each island, except Barrang Lompo. The most common size of microdebris ranged 0.05-1mm, accounted for 36% of the total microdebris. The particle observed by FT-IR Microscope was identified as cotton. Our results suggest that microdebris pollution have contaminated T. gratilla in the Spermonde archipelago.

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Masquerade, mimicry and crypsis of the polymorphic sea anemone Phyllodiscus semoni and its aggregations in South Sulawesi

Contributions to Zoology ◽

10.1163/18759866-08004003 ◽

2011 ◽

Vol 80 (4) ◽

pp. 251-268 ◽

Cited By ~ 12

Author(s):

Bert W. Hoeksema ◽

Andrea L. Crowther

Keyword(s):

Sea Anemone ◽

Soft Corals ◽

Sea Anemones ◽

Stony Corals ◽

South Sulawesi ◽

Toxicological Studies ◽

The Subject ◽

High Level ◽

Intraspecific Morphological Variation ◽

Spermonde Archipelago

Phyllodiscus semoni is a morphologically variable sea anemone species from the Indo-Pacific with morphotypes ranging from upright and branched to low-lying and rounded. The apparent camouflage strategies of this sea anemone allow it to resemble other species or objects in its environment, such as stony corals, soft corals, seaweeds, or rocky boulders covered by algae, which may help it to avoid recognition by potential predators. Occasionally, it occurs in aggregations that may result from asexual reproduction. A high level of intraspecific morphological variation, including co-occurring aggregations of three different morphotypes, was observed in the Spermonde Archipelago off Makassar, South Sulawesi, Indonesia. The co-occurrence of aggregations with different morphotypes suggests that Phyllodiscus is a highly polymorphic monospecific genus. Sea anemones of this genus are not frequently encountered at other localities and the number of morphotypes seems large. Therefore, it is unlikely that we are dealing with more than one species that are all concentrated in a single area. Phyllodiscus sea anemones are considered dangerous to humans because their nematocysts contain highly toxic venoms that may inflict harmful stings. Therefore they are the subject of recent toxicological studies. The present paper aims to assist in the recognition of these highly variable hazardous animals and to discuss the appearance of their aggregations.

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Studies on microplastic contamination in seagrass beds at Spermonde Archipelago of Makassar Strait, Indonesia

Journal of Physics Conference Series ◽

10.1088/1742-6596/1341/2/022008 ◽

2019 ◽

Vol 1341 ◽

pp. 022008

Author(s):

A Tahir ◽

M F Samawi ◽

K Sari ◽

R Hidayat ◽

R Nimzet ◽

...

Keyword(s):

Seagrass Beds ◽

Spermonde Archipelago

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Gonad maturity and gonadal somatic index of blue swimming crab Portunus pelagicus harvested from Spermonde Archipelago, South Sulawesi, Indonesia

Aceh Journal of Animal Science ◽

10.13170/ajas.6.1.19187 ◽

2021 ◽

Vol 6 (1) ◽

pp. 23-26

Author(s):

Muh. Saleh Nurdin ◽

Fauziah Azmi ◽

Teuku Fadlon Haser

Keyword(s):

Coral Reef ◽

Reproductive Biology ◽

Maturity Stage ◽

Swimming Crab ◽

Portunus Pelagicus ◽

Gonad Maturity ◽

South Sulawesi ◽

Coral Reef Ecosystems ◽

Gonadal Somatic Index ◽

Spermonde Archipelago

Reproductive biology is one of the biological aspects that needed to formulate responsible management of blue swimming crab (BSC). The crab is one of the commercial fisheries commodities in South Sulawesi, Indonesia. Presently no information on the reproductive biology of this crab from Spermonde Archipelago, Sout Sulawesi. Therefore, the study aimed to analyze and compare gonad maturity stage(GMS)andgonadalsomaticindex(GSI)oftheBSCcaughtonthreeecosystemsnamelycoralreef,seagrass,andmangrovein Salemo Island, Spermonde Archipelago. GMS and GSI were analyzed descriptively for five months from March to July 2015. Results indicate there was a difference in GMS of the BSC caught in mangroves, seagrass, and coral reef. Generally, mangrove was dominated by immature BSC with GMS I and GMS II, while the BSC caught in the seagrass and coral reef BSC were dominantly mature and spawn GMS III, IV, and V. GSI BSC caught in mangrove ecosystem are smaller than GSI BSC caught in seagrass and coral reef ecosystems. Seagrass and coral reef ecosystems suitable for development no-take zone of the BSC.

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