A New Haemogregarina Species of the Alligator Snapping Turtle, Macrochelys temminckii (Testudines: Chelydridae), in Georgia and Florida that Produces Macromeronts in Circulating Erythrocytes

  title={A New Haemogregarina Species of the Alligator Snapping Turtle, Macrochelys temminckii (Testudines: Chelydridae), in Georgia and Florida that Produces Macromeronts in Circulating Erythrocytes},
  author={Sam R Telford and Terry M. Norton and Paul E. Moler and John Beck Jensen},
  booktitle={The Journal of parasitology},
Abstract Haemogregarina macrochelysi n. sp. (Apicomplexa: Haemogregarinidae) of the alligator snapping turtle, Macrochelys temminckii, is characterized by slender, recurved gamonts 29–35 × 3–4.5 μm, in which the anterior limb comprises 48–54% of the total length. The gamont nucleus, 5–7.5 × 2–5 μm, is situated at approximately midbody of the gamont. Meronts typical of Haemogregarina occupying erythrocytes have 3-8 small, compact nuclei and are 13–17 × 4.5–9 μm. Erythrocytic meronts that contain… 

Molecular and morphological characterization of a haemogregarine in the alligator snapping turtle, Macrochelys temminckii (Testudines: Chelydridae)

A severely underweight alligator snapping turtle Macrochelys temminckii Troost in Harlan, 1835, was found near Tyler, Texas, and taken to the Caldwell Zoo, and morphology and morphometric data for the forms indicate similarity to Haemogregarina macrochelysi n.

Molecular characterisation of Hepatozoon aegypti Bashtar, Boulos & Mehlhorn, 1984 parasitising the blood of Spalerosophis diadema (Serpentes: Colubridae)

Phylogenetic analysis based on the partial 18S small subunit ribosomal DNA sequences indicates that Hepatozoon aegypti cluster within a mixed clade of HepatoZoon species parasitising snakes, geckos and rodents from various geographic areas.

Biodiversity of the Coccidia (Apicomplexa: Conoidasida) in vertebrates: what we know, what we do not know, and what needs to be done.

  • D. Duszynski
  • Biology, Environmental Science
    Folia parasitologica
  • 2021
Over the last two decades my colleagues and I have assembled the literature on a good percentage of most of the coccidians (Conoidasida) known, to date, to parasitise: Amphibia, four major lineages

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

Three new polystomes from the hosts K. scorpioides and R. punctularia are described, being the first chelonianpolystomes to be reported and described from French Guiana and the first representatives of Neopolystoma from South America.

Haemogregarines and Criteria for Identification

PCR-based assays and the sequencing of the 18S rRNA gene are helpful methods to further characterize this parasite group and the proper classification for the haemogregarine complex is available with the criteria of generic and unique diagnosis of these parasites.

Molecular detection of Apicomplexan hemoparasites in anurans from Brazil

This study showed, for the first time, the molecular detection of Lankesterella sp.

Population Structure and Body Size of the Suwannee Alligator Snapping Turtle (Macrochelys suwanniensis) in Northern Florida

The M. suwanniensis population in the SFR presently appears healthy, but it is suggested this species requires continued protection because of vulnerability of adults to harvest.

Identification of Blood Parasites in Individuals from Six Families of Freshwater Turtles

Wild turtles would be more likely sources of parasite transmission to captive populations if used in breeding programs, and captive breeding with subsequent release of turtles would seem to pose little risk to free-ranging turtles with regard to the spread of these parasites.



Observations on Haemogregarina balli sp. n. from the common snapping turtle, Chelydra serpentina.

Haemogregarina balli sp. n. is described from the blood and organs of the common snapping turtle Chelydra serpentina serpentina and from the gastric and intestinal ceca of the presumed invertebrate

Gametogenesis and Sporogonic Development of Haemogregarina balli (Apicomplexa: Adeleina: Haemogregarinidae) in the Leech Placobdella ornata

. The sexual stages and sporogonic development of Haemogregarina balli an apicomplexan blood parasite of snapping turtles, Chelydra serpentina were studied by electron microscopy for 30 days post

Prevalence and intensity of Haemogregarina balli (Apicomplexa: Adeleina: Haemogregarinidae) in three turtle species from Ontario, with observations on intraerythrocytic development

Free-ranging populations of turtles, Chelydra serpentina serpentina, Chrysemys picta marginata, and Clemmys insculpta, were examined for prevalence and intensity of Haemogregarina balli during the summers of 1989 and 1990 in Algonquin Park, Ontario to suggest that the biology of P. ornata is an important influence in these changes.

Haemogregarine Specificity in Two Communities of Florida Snakes, With Descriptions of Six New Species of Hepatozoon (Apicomplexa: Hepatozoidae) and a Possible Species of Haemogregarina (Apicomplexa: Haemogregarinidae)

In Florida, at least, the diversity of the Hepatozoon community not only equals but probably exceeds the Diversity of the snake communities present, and that host specificity in nature may be much greater than that postulated from previous studies.

A description of intraerythrocytic schizonts and gametocytes of a haemogregarine of the snapping turtle Chelydra serpentina

The number of merozoites and the scarcity of schizonts are discussed in relation to haemogregarines of other cheloneans, as well as of teleosts and elasmobranchs.

Haemogregarina pseudemydis n. sp. (Apicomplexa: Haemogregarinidae) and Pirhemocyton chelonarum n. sp. in turtles from Louisiana.

The blood of each of 95 turtles collected from southeastern Louisiana was infected with some or all of the merogonic stages and gametocyte stage of Haemogregarina pseudemydis n.


This study provides justification for the use of these long-lived aquatic turtles as biologic monitors of the health of local freshwater ecosystems.

Transmission of Haemogregarina balli From Painted Turtles to Snapping Turtles Through the Leech Placobdella ornata

Six leeches were allowed to feed on a painted turtle infected with Haemogregarina balli and subjected to a period of diapause before being allowed toFeed on 2 laboratory-reared snapping turtles.