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Kongkiat Kittiwatanawong

Kongkiat Kittiwatanawong
Phuket Marine Biological Centerk · Marine and Coastal Resources

Doctor of Philosophy

About

58
Publications
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Introduction

Publications

Publications (58)
Article
Full-text available
The Indo-Pacific humpback dolphin (Sousa chinensis) is a vulnerable marine mammal species that inhabits shallow, coastal waters from Southeast China, southward throughout Southeast Asia, and westward around the Bay of Bengal to eastern India. Polymorphic microsatellites are useful for elucidating ecological and population genetics-related questions...
Article
Cetaceans inhabit oceans throughout the world. Four specific odontocetes, namely Cuvier's beaked whale ( Ziphius cavirostris), Indo Pacific finless porpoise ( Neophocaena phocaenoides), pygmy sperm whale ( Kogia breviceps), and dwarf sperm whale ( Kogia sima), have occasionally been found stranded along Thailand's coastal waters (the Andaman Sea an...
Article
Full-text available
Although the existence of two cetacean species in and around Thai Seas from within the subfamily Globicephalinae, Risso’s dolphin Grampus griseus G. Cuvier, 1812, and false killer whale Pseudorca crassidens Owen, 1846, has been known for decades, current knowledge on the abundance, genetic diversity, and conservation status of these marine mammals...
Article
Full-text available
The dugong (Dugong dugon) is an endangered species of marine mammals, so knowledge of genetic diversity of these populations is important for conservation planning within different habitats. In this study, six microsatellite markers were used to assess the genetic diversity and population structure of 77 dugongs from skin samples of stranded animal...
Article
Full-text available
In our recent study, based on a large sample-set collected from the western Pacific region to the eastern Indian Ocean, we reconstructed the population history of the Indo-Pacific humpback dolphin (Sousa chinensis). Through calculating two genetic divergence parameters (Nei’s dA and Fst) of the mtDNA control region (CR), we reported a species-level...
Article
Full-text available
Female leatherback sea turtles (Dermochelys coriacea) often oviposit in locations with high risk of predation, human activity, flooding, or erosion; thus, influencing hatching rates. It has been hypothesized that the relocation of these nests would significantly increase hatching success. In this study, we measured various nest traits to determine...
Article
Full-text available
Marine mammals vary greatly in size and lifespan across species. This study determined whether measures of adult body weight, length and relative telomere length were related to lifespan. Skin tissue samples (n = 338) were obtained from 23 marine mammal species, including four Mysticeti, 19 Odontoceti and one dugong species, and the DNA extracted t...
Article
Full-text available
Dugongs ( Dugong dugon ) are seagrass specialists distributed in shallow coastal waters in tropical and subtropical seas. The area and distribution of the dugongs’ feeding trails, which are unvegetated winding tracks left after feeding, have been used as an indicator of their feeding ground utilization. However, current ground-based measurements of...
Article
Bones or skeletal remains can be used to answer a number of questions related to species, sex, age or cause of death. However, studies involving vertebrae have been limited as most were performed on skulls or long bones. Here, we have stated the hypothesis that the morphometry of cervical vertebrae can be used for species identification and body si...
Article
Full-text available
Currently, species identification of stranded marine mammals mostly relies on morphological features, which has inherent challenges. The use of genetic information for marine mammal species identification remains limited, therefore, new approaches that can contribute to a better monitoring of stranded species are needed. In that context, the ISSR-H...
Article
Full-text available
Dugong (Dugong dugon) populations have been shrinking globally, due in large part to habitat fragmentation, degradation and ocean pollution, and today are listed as Vulnerable by the IUCN. Thus, determining genetic diversity in the remaining populations is essential for conservation planning and protection. In this study, measures of inter-simple s...
Article
To expand the spatial and temporal scales of passive acoustic monitoring of animals, automatically detecting target sounds among noises with similar acoustic properties is essential but challenging. In particular, the classification of tonal vocalisations and tonal noise remains a universal problem in bioacoustics research. The vocalisations of dug...
Article
Full-text available
The Irrawaddy dolphin (Orcaella brevirostris) is an endangered, small cetacean species which is widely distributed in rivers, estuaries, and coastal waters throughout the tropical and subtropical Indo-Pacific. Despite the extensive distribution of this species, little is known of individual movements or genetic exchange among regions in Thailand. H...
Article
Full-text available
The currently recognized Indo‐Pacific humpback dolphin occurs in estuaries and surrounding shallow waters from the South China Sea to the Asian coast of the Indian Ocean. However, a recent study suggested that the humpback dolphin from the Bay of Bengal may represent a distinct phylogenetic species. In this study, we sequenced 915‐bp mtDNA segments...
Article
Full-text available
Aim Holistic marine biodiversity conservation refers to ecosystem‐based management through marine conservation planning (MCP), based on mapping habitat protection priority areas. In practice, MCP is frequently hindered by information gaps in biodiversity distributions, particularly on a marine ecoregion scale. Species distribution modelling (SDM) c...
Article
Full-text available
Passive acoustic monitoring is an effective method to observe feeding behavior of dugongs in their natural environment. In this paper, we developed a new method to automatically detect the feeding sounds of dugongs from acoustic recording data. In January 2018, we deployed an autonomous underwater sound recorder on the seafloor in an intertidal sea...
Article
Full-text available
The ability to estimate age and determine the growth status of free-ranging dugongs ( Dugong dugon ) is vital to providing insight into the basic biology of this endangered species. Currently, age estimation in dugong carcasses relies on counting dentin growth layer groups (GLGs) in tusks, but a disadvantage is they need to be intact. We explored w...
Article
Full-text available
The dugong (Dugong dugon Müller) is recognized as an endangered marine mammal. There is limited available anatomical data on the dugong’s skeletal system, while what is available has not been well established due to the limited number of archived samples and limited access to them. Importantly, there are certain key questions that should be answere...
Article
Community-based mangrove management (CBMM) in Thailand has been uniquely successful, so that efforts to promote CBMM elsewhere can potentially learn from the Thai experience. This qualitative research identifies factors contributing to success of community-based mangrove management in four coastal communities along the Andaman Sea during 1980–2017....
Article
Full-text available
Animal telemetry is a powerful tool for observing marine animals and the physical environments that they inhabit, from coastal and continental shelf ecosystems to polar seas and open oceans. Satellite-linked biologgers and networks of acoustic receivers allow animals to be reliably monitored over scales of tens of meters to thousands of kilometers,...
Article
Full-text available
Irrawaddy dolphins (Orcaella brevirostris) are threatened, little‐known cetaceans primarily jeopardized by fishing gear entanglement. Information regarding life history, foraging ecology, and movement are crucial to determine management units and conservation regions. This is the first analysis of the ontogenetic changes in diet and habitat of Irra...
Article
Baseline data on the distribution patterns of animals disclose the dynamic function of habitat use as it relates to the accessibility of prey, social interactions, predator-prey interactions, and interhabitat- patch mobility. Differentiated distribution patterns in sympatric animal species may imply a spatial-partitioning of habitat use. This study...
Article
Optimal feeding frequency was investigated to improve head-started propagation programme of juvenile green turtles (Chelonia mydas). The 15-day-old turtles (25–26 g body weight) were fed for ad libitum intake at one (1MD), two (2MD), three (3MD) or four (4MD) meals daily over a 3-month trial. Responses in growth, feed utilization, faecal characteri...
Article
Examining characteristics of a species’ fine-scale habitat use contributes to effective and practical spatially explicit conservation. Dugongs (Dugong dugon) are endangered herbivorous mammals that use vocalisation for communication. In a small, specific area of Thai waters, classified here as a “vocal hotspot,” vocalisation rates are elevated, imp...
Article
The occurrence of osteoarthritis (OA) in marine mammals is still questionable. Here we investigated the prevalence of OA in marine (dolphin and dugong) and terrestrial mammals (Asian elephant, Asiatic buffalo, camel, cat, cattle, deer, dog, domestic goat, horse, human, hyena, impala, lion, Malayan tapir, Assam macaque, mule, pig, rabbit, red kangar...
Article
Full-text available
The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand. A total of 58 parameters from the skull and scapula (25 from the cranium, 23 from the mandible and 10 from the scap...
Article
Full-text available
The elemental composition was investigated and applied for identifying the sex and habitat of dugongs, in addition to distinguishing dugong tusks and teeth from other animal wildlife materials such as Asian elephant (Elephas maximus) tusks and tiger (Panthera tigris tigris) canine teeth. A total of 43 dugong tusks, 60 dugong teeth, 40 dolphin teeth...
Article
The rearing of green turtles (Chelonia mydas Linnaeus, 1758) before their release to natural habitats has been practiced in several countries, whereas little information is available for inferring optimal husbandry protocols. This study aimed to improve the growth performance and feed utilization of post-hatching green turtles by varying the water...
Article
Dugongs vocalize bird-like calls, such as chirps and trills but the functional definitions of the calls are yet to be clarified. A series of playback experiments was conducted in Thai waters to investigate their call-back behavior. The population was exposed to 4 different playback stimuli; a recorded wild dugong’s chirp, a synthesized down-sweep s...
Article
While ex situ conservation programs of juvenile green turtles (Chelonia mydas Linnaeus, 1758), before release to natural habitats, have been conducted in several countries, the optimal-stocking density for husbandry has not yet been reported. The optimization of stocking density was the main purpose of this study. The 15-day-old post-hatching turtl...
Article
Faecal sampling can provide an unobtrusive monitoring of feed utilization. We demonstrate that faecal digestive enzymes and physicochemical characteristics correlate with the feed conversion efficiency in green turtle (Chelonia mydas). The 10-day-old juvenile turtles (25.4 ± 1.3 g body weight) were fed with either fresh feed containing minced fresh...
Article
Pre-soaking of the feed pellets in water can improve feed utilization in juvenile green turtles (Chelonia mydas Linnaeus, 1758), but the pre-soaking has not previously been optimized. This study aimed to optimize the water amount used for pre-soaking the pellets. The experiments followed a completely randomized design with three replications of eac...
Conference Paper
To quantitatively examine the complex environmental factors affecting acoustical behavior on marine mammals like dugongs, a combination of passive acoustic monitoring (PAM) and statistical modeling should be effective approach. We deployed automatic underwater sound monitoring systems (AUSOMS) on the sea floor of different two sites and recorded th...
Article
Full-text available
Investigations on the distribution, population size, and habitat characteristics of animal populations provide the baselines for sound conservation management. Southeast Asia is considered an important habitat for the Indo-Pacific humpback dolphin (Sousa chinensis), but information regarding their population size and habitat characteristics is limi...
Article
This study investigated the population size and distribution pattern of the Indo-Pacific humpback dolphin (Soasa chinesis) off Donsak, Surat Thani, Thailand. The field surveys were conducted along the coastline of the mainland and the offshore area of the Angthong Marine National Park. The population size was estimated by applying a mark-recapture...
Article
Artificial feed would make it easier to rear juvenile green turtles (Chelonia mydas) in Thailand, but the benefits and potential risks for growth and health of this endangered species need to be assessed. The effects of three dietary treatments on survival, growth, feed efficiency, fecal digestive enzymes, and blood parameters of juvenile green tur...
Article
Full-text available
Fishermen are in daily contact with the environment of Chalong Bay and surrounding areas. They catch resources for a living but they also observe the state of environments and its organisms, including endangered species such as sea turtles and whales. The purpose of this study was to learn from the experience of fishermen regarding the resources th...
Conference Paper
Full-text available
During 1992 – 2006, seven dolphins were stranded on the shores of the Andaman coast of Thailand. The seven cetaceans consisted of three striped dolphins (Stenella coeruleoalba), two spinner dolphins (Stenella longirostris), one spotted dolphin (Stenella attenuata), and one rough – toothed dolphin (Steno bredanensis). Autopsies of the dolphins were...
Article
For the vast majority of reptiles, low temperature is a major constraint on reproduction. However, continuous reproduction is not always observed even in equatorial climates. In the present study, we examined the reproductive output of green turtles in a year-round nesting population on Huyong Island, Thailand. From 1996 to 2007, 121 females were i...
Article
In circumglobal populations of sea turtles, little nesting activity occurs during cold seasons when the sand temperature on a nesting beach is inappropriate for successful egg incubation. However, it is not known whether reproductive seasonality also occurs in year-round nesting rookeries where the sand temperature may be suitable throughout the ye...
Conference Paper
Full-text available
Time-depth-temperature data loggers were used to examine the vertical distribution of water temperature and diving behavior of female green turtles, Chelonia mydas, during the internesting period at Huyong Island in the Andaman Sea. The Andaman Sea of western Thailand experiences two main seasons: the relatively calm dry season from November to Apr...
Conference Paper
Full-text available
This paper gives preliminary results of diving behavior for one green turtle during an inter-nesting period at Huyong Island in Thailand. A depth/temperature logger was used to examine the habitat utilization of the female green turtle during an inter-nesting period at Huyong Island in Thailand. In general, it has been believed that female turtles...
Article
Full-text available
2001. High genetic divergence of Tridacna squamosa living at the west and the east coasts of Thailand. -Phuket Marine Biological Center Special Publication 25(2): 343-347. Starch-gel protein electrophoresis was employed to compare genetic divergence of giant clam, Tridacna squamosa populations from the Andaman Sea (23 individuals) and the Gulf of T...
Article
Kittiwattanawong, K. 2001. Correlation of multilocus heterozygosity to growth rate, oxygen consumption, and morphological characteristics in Cerastoderma edule (Bivalvia: Cardiidae) -Phuket Marine Biological Center Special Publication 25(2): 323-341. A single population of 3-year Cerastoderma edule was used to investigate correlation between multil...
Article
The respiration rate of Carcinus maenas was measured by the flow-through system in three diluted salinities (25, 12, and 6 ppt) and three crab sizes (22.24, 38.11, and 45.44 mm Carapace Width, CW), both male and female. The range of respiration rates was between 0.685-4.237 mgO 2 hr -1 g -1 ash-free dry weight. The water temperature during experime...

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