La-orsri Sanoamuang

Khon Kaen University | KKU · Department of Biology

Optimal egg viability storage conditions for two commercial fairy shrimps, Branchinella thailandensis and Streptocephalus sirindhornae, were investigated. Eggs for each treatment were kept under eight different conditions at four different temperatures for 24 months. Every 2 months, representative eggs were hatched to evaluate hatching percentages....

Spinicaudatan clam shrimps have been reported from Thailand and Cambodia, but are poorly known for Southeast Asia. We conducted widespread, intensive surveys for spinicaudatan clam shrimps across Thailand. We report five species and present diagnoses for each, with remarks on the Asian taxa. Two species represent new records and range extensions, a...

We present a second species of Theosbaena, which also represents the second species of Thermosbaenacea from mainland Asia. This new species is apparently endemic to a limestone cave in Nakhon Sawan Province in central Thailand. Theosbaena kiatwongchai n. sp. is separated from T. cambodjiana by the form of the gnathopod, the form of the pereopod exo...

Laevicaudatan clam shrimps have been previously reported from Thailand, but were only tentatively identified. We report on two new species of laevicaudatan clam shrimps from Thailand collected after conducting widespread, intensive surveys across the central region of the country. We present diagnoses for each, with remarks on the Asian taxa. Lynce...

Bryocyclops maholarnensis, new species, is a stygobiotic copepod found in four caves in northeastern Thailand. It is described and figured hereafter. The new species shares some characteristics with those of species from the Group II sensu Lindberg (1954). However, it stands out by having the following distinctive features: no modified spine in the...

In order to address the dearth of information on Rotifera in Vietnam, and especially on rotifers inhabiting freshwater psam-mon in Southeast Asia, we collected and examined twenty-five hygropsammon samples from Bau Thiem Lake, Thua Thien Hue Province, central Vietnam. A total of eighty-nine species-level rotifer taxa were identified, belonging to 2...

The large branchiopod crustaceans (fairy shrimp, tadpole shrimp and clam shrimp) of South East (SE) Asia have only recently been examined with scientific vigor. Although more than 70 species have been reported for Asia and Indonesia, only six native taxa and one introduced species are known from SE Asia. The majority of records are from Thailand, w...

The standardized karyotype and idiogram of the titan triggerfish, Balistoides viridescens (Bloch & Schneider 1801) from Phuket Province, Thailand, were obtained from the present study. Kidney cell samples were taken from five male and five female fish. The mitotic chromosome preparations were conducted directly from the kidney cells. Conventional s...

The present study aims to construct the karyotype and idiogram of the Northeastern butterfly lizard (Leiolepis reevesii rubritaeniata). Specimens were collected from Khon Kaen Province, Northeast Thailand. Lizard chromosome preparation was conducted by the squash technique using bone marrow and testis. Conventional staining and NOR-banding techniqu...

Crustaceans in the order Spinicaudata display a broad range of reproductive strategies, ranging from pure hermaphroditism to pure dioecy (separate males and females), and intermediate combinations. One particularly interesting genus of these "clam shrimps" is Eulimnadia. Based on offspring sex ratios, it has been suggested that all members of the g...

Crustaceans in the order Spinicaudata display a broad range of reproductive strategies, ranging from pure hermaphroditism to pure dioecy (separate males and females), and intermediate combinations. One particularly interesting genus of these clam shrimps is Eulimnadia. Based on offspring sex ratios, it has been suggested that all members of the gen...

A discovery of polymorphic nucleolar organizer regions (NORs) and karyological analysis in the dusky leaf monkey (Trachypithecus obscurus) from Thailand were studied. Blood samples were taken from 2 male and I female leaf monkeys. After standard whole blood lymphocytes had been cultured at 37 degrees C for 96h in presence of colchicine, metaphase s...

Cambodia is one of the least explored areas in Southeast Asia, where very little reliable information on the freshwater copepod fauna is available. Recent and extensive collecting in 7 Cambodian provinces, from the western part of the country as far as the Mekong River, provided the material for our present paper which reviews the Thermocyclops fau...

Methyl farnesoate, a crustacean juvenile hormone, successfully induced male development in several littoral cladocerans from Thailand in short-term multispecies cultures. Male morphology is fully described in four species of Chydoridae- Oxyurella singalensis Daday, 1898, Leberis diaphanus (King, 1853), Leydigia cf. ciliata Gauthier, 1939, Disparalo...

A study of zooplankton communities in three rice fields (RF1, RF2 and RF3) at Pathum Thani province was carried out from August to November 2005. A total of 88 taxa were identified. Of these, 74 belonged to Rotifera, 11 were Cladocera and 3 were Copepoda. The highest number of zooplankton species was recorded in RF1 (75 species), followed by RF2 (5...

Naupliar development of Eucyclops cf. serrulatus tropicalis, Euc. cf. spatulatus, and Ectocyclops medius Kiefer, 1930 (Copepoda: Cyclopidae). Zoological Studies 48(1): 12-32. All 6 naupliar stages of Eucyclops cf. serrulatus tropicalis Dussart and Fernando, 1985, Euc. cf. spatulatus Morton, 1990, and Ectocyclops medius Kiefer, 1930 are described fr...

Typescript (photocopy). Thesis (Ph. D.)--University of Canterbury, 1992. Bibliography: leaves 132-145.