| ticks infesting wildlife species in northeastern brazil with new host and locality records. | from september 2008 to march 2010, 397 ticks (315 larvae, 33 nymphs, 23 females, and 26 males) were collected from captive and free-living wildlife species in northeastern brazil. six tick species were identified, including amblyomma auricularium (conil) on tamandua tetradactyla (l.), amblyomma dubitatum neumann on hydrochaeris hydrochaeris (l.), nectomys rattus (pelzen) and t. tetradactyla, amblyomma parvum aragão on t. tetradactyla, amblyomma rotundatum koch on boa constrictor l., chelonoidis ... | 2010 | 21175080 |
| characterization of spermatogonial cells and niche in the scorpion mud turtle (kinosternon scorpioides). | undifferentiated spermatogonia (aund) or spermatogonial stem cells (sscs) are committed to the establishment and maintenance of spermatogenesis and fertility throughout a male's life and are located in a highly specialized microenvironment called niche that regulates their fate. although several studies have been developed on sscs in mammalian testis, little is known about other vertebrate classes. the present study is the first to perform a more detailed investigation on the spermatogonial cell ... | 2019 | 29966660 |
| anatomical, histological, and histochemical analyses of the scent glands of the scorpion mud turtle (kinosternon scorpioides scorpioides). | fossil evidence suggests that scent glands are basal features of testudines. however, we know little about the structure of these glands in the brazilian kinosternidae. in this study, we described the macroscopic anatomy, histology, and histochemistry of the scent glands of three males and three females of kinosternon scorpioides scorpioides from the marajó mesoregion, pará state, brazil. in all of the specimens analyzed, regardless of sex, we found four scent glands, including two axillary and ... | 2020 | 31469489 |
| reproductive morphophysiology of the male scorpion mud turtle (kinosternon scorpioides linnaeus, 1766) in captivity. | kinosternon scorpioides, popularly known as scorpion mud turtle (jurará in brazil), is a fresh water species. there is little information about its reproduction and the present study aims to morphologically characterize the reproductive organs of male k.scorpioides bred in captivity in two seasons of the year. the reproductive tracts of adult animals under went macroscopic ultrastructural analysis of the lumen, as well as scanning electron and transmission microscopy. macroscopically, the male g ... | 2020 | 32107873 |
| nematoda of kinosternon scorpioides (testudines: kinosternidae) from northeastern brazil. | the scorpion mud turtle (kinosternon scorpioides) is a small freshwater turtle broadly distributed in south america and commonly consumed in some brazilian regions. this study aimed to identify the species of helminths that parasitize the digestive tract of k. scorpioides and report infection parameters such as parasite prevalence, mean intensity of the infection, abundance, and the relationship between these nematodes and host body size in this species. we captured 20 adult male k. scorpioides, ... | 2016 | 26485115 |
| [morphometric variation and ecologic characteristics of the habitat of the kinosternon scorpioides turtle in costa rica (chelonia,kinosternidae)]. | kinosternon scorpioides shows sexual dimorphism in costa rica. males are bigger than females since in the length of the shell ranges between 15.0-17.5 cm (average: 16.10 cm) and in these ones between 12.4-15.9 cm (average: 13.8 cm). according to the life zone system of holdridge, k. scorpioides is in two geographic regions with different characteristics, one situated in the tropical dry forest zone and the other in tropical very rain forest. morphometric variation is evident since females, more ... | 1994 | 7899624 |
| novel piroplasmid and hepatozoon organisms infecting the wildlife of two regions of the brazilian amazon. | during 2009-2012, wild animals were sampled in two areas within the amazon biome of brazil, in the states of mato grosso and pará. animal tissues and blood were molecularly tested for the presence of piroplasmida (genera babesia, theileria, cytauxzoon) or hepatozoon dna. overall, 181 wild animals comprising 36 different species (2 reptiles, 5 birds, and 29 mammals) were sampled. the following piroplasmida agents were detected: cytauxzoon felis in one ocelot (leopardus pardalis), theileria cervi ... | 2017 | 28603688 |
| tracking platyhelminth parasite diversity from freshwater turtles in french guiana: first report of neopolystoma price, 1939 (monogenea: polystomatidae) with the description of three new species. | polystomatid flatworms in chelonians are divided into three genera, i.e. polystomoides ward, 1917, polystomoidella price, 1939 and neopolystoma price, 1939, according to the number of haptoral hooks. among the about 55 polystome species that are known to date from the 327 modern living chelonians, only four species of polystomoides are currently recognised within the 45 south american freshwater turtles. | 2017 | 28143592 |
| effect of three feeding management systems on some reproductive parameters of scorpion mud turtles (kinosternon scorpioides) in brazil. | chelonians have been exploited since ancient times for their meat, eggs, fat, and offal, among other things. among these animals, there is scorpion mud turtle (kinosternon scorpioides) which is an omnivorous turtle with semiaquatic habits and is widely consumed in brazil. the aim of this study was to evaluate the influence of different feeding management systems on the reproductive performance of captive-bred scorpion mud turtles, including egg quality and chemical composition. study animals inc ... | 2013 | 23054808 |
| haemogregarine infections of three species of aquatic freshwater turtles from two sites in costa rica. | twenty-five black river turtles (rhinoclemmys funerea) and eight white-lipped mud turtles (kinosternon leucostomum) from selva verde, costa rica were examined for haemoparasites. leeches identified as placobdella multilineata were detected on individuals from both species. all turtles sampled were positive for intraerythrocytic haemogregarines (apicomplexa:adeleorina) and the average parasitemia of black river turtles (0.34% ± 0.07) was significantly higher compared to white-lipped mud turtles ( ... | 2013 | 24533326 |
| spermatogenic cycle length and sperm production in the freshwater turtle kinosternon scorpioides. | kinosternon scorpioides is a brazilian freshwater turtle that belongs to the class reptilia, encompassing almost 10,000 species. nevertheless, very little is known about the testicular quantitative parameters, particularly those related to spermatogenesis, in this vertebrate class. our main objectives were to investigate in detail the structure and function of the testis in k. scorpioides, particularly the aspects related to spermatogenic cycle length and sertoli cell (sc) and spermatogenic effi ... | 2014 | 24403547 |