''Aplexa rivalis'' is a
species
A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...
of small air-breathing
freshwater snail
Freshwater snails are gastropod mollusks that live in fresh water. There are many different families. They are found throughout the world in various habitats, ranging from ephemeral pools to the largest lakes, and from small seeps and springs t ...
, an
aquatic
Aquatic means relating to water; living in or near water or taking place in water; does not include groundwater, as "aquatic" implies an environment where plants and animals live.
Aquatic(s) may also refer to:
* Aquatic animal, either vertebrate ...
pulmonate
Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group inclu ...
gastropod
Gastropods (), commonly known as slugs and snails, belong to a large Taxonomy (biology), taxonomic class of invertebrates within the phylum Mollusca called Gastropoda ().
This class comprises snails and slugs from saltwater, freshwater, and fro ...
mollusk
Mollusca is a phylum of protostomic invertebrate animals, whose members are known as molluscs or mollusks (). Around 76,000 extant species of molluscs are recognized, making it the second-largest animal phylum after Arthropoda. The ...
in the family
Physidae
Physidae, common name, commonly called the bladder snails, is a family (biology), family of small air-breathing freshwater snails, Aquatic animal, aquatic pulmonate gastropod molluscs in the superfamily Lymnaeoidea.MolluscaBase eds. (2021). Mol ...
, a family which are sometimes known as the bladder snails.
Description
''Rivalis Aplexa'' has a thin shell levorotatory, featuring a large oval opening with parietal callus lip sharp and wide. The tentacles are filiform and foot is very long in the back. Ovigerous masses are constituted by transparent oval eggs variable number embedded in a gelatinous mass.
[Martínez E, Rafael y Miranda A, Rafael E. 1968. Aspectos de la reproducción en moluscos pulmonados del área metropolitana de Caracas. En: Estudio de Caracas. Ecología vegetal - fauna Vol:II pp:123=165. Universidad Central de Venezuela. Caracas-Venezuela.]
Distribution
This species occurs in:
*
Brazil
Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population ...
[Martins R. T. & Alves R. da G. 2008]
''Occurrence of Naididae (Annelida: Oligochaeta) from three gastropod species in irrigation fields in southeastern Brazil''
Biota Neotropica, 8(3),
*
Venezuela
Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...
[Lutz, Adolfo 1928: Estudios de zoología y parasicología venezolana. Río de Janeiro.]
Ecology
''
Chaetogaster limnaei'' and ''
Nais communis'' were found to be associated with ''Aplexa rivalis'' in Brazil.
In Venezuela it is found inhabiting ornamental ponds in the leaves of plants and vegetable crops, and are common in
aquarium
An aquarium (: aquariums or aquaria) is a vivarium of any size having at least one transparent side in which aquatic plants or animals are kept and displayed. fishkeeping, Fishkeepers use aquaria to keep fish, invertebrates, amphibians, aquati ...
shops.
See also
*
List of non-marine molluscs of El Hatillo Municipality, Miranda, Venezuela
References
External links
ZipcodeZoo.com: ''Aplexa rivalis''
Biodiversity Heritage Library: ''Aplexa rivalis''
{{Taxonbar, from=Q4779971
Physidae
Gastropods described in 1807
Taxa named by Thomas Rackett