Corona pfeifferi

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Corona pfeifferi
Corona pfeifferi.png
Corona pfeifferi
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked):clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
informal group Sigmurethra
Superfamily: Orthalicoidea
Family: Orthalicidae
Subfamily: Orthalicinae
Genus: Corona
Species:C. pfeifferi
Binomial name
Corona pfeifferi
(Hidalgo, 1869) [1]
Synonyms
  • Orthalicus pfeifferiHidalgo, 1869
Corona pfeifferi (Hidalgo, 1869), museum specimen Naturalis Biodiversity Center - ZMA.MOLL.386336 - Corona pfeifferi (Hidalgo, 1869) - Orthalicidae - Mollusc shell.jpeg
Corona pfeifferi (Hidalgo, 1869), museum specimen

Corona pfeifferi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Orthalicidae.

In biology, a species ( ) is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. 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. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. While these definitions may seem adequate, when looked at more closely they represent problematic species concepts. For example, the boundaries between closely related species become unclear with hybridisation, in a species complex of hundreds of similar microspecies, and in a ring species. Also, among organisms that reproduce only asexually, the concept of a reproductive species breaks down, and each clone is potentially a microspecies.

Land snail

A land snail is any of the numerous species of snail that live on land, as opposed to sea snails and freshwater snails. Land snail is the common name for terrestrial gastropod mollusks that have shells. However, it is not always easy to say which species are terrestrial, because some are more or less amphibious between land and fresh water, and others are relatively amphibious between land and salt water.

Terrestrial animal animals living on land

Terrestrial animals are animals that live predominantly or entirely on land, as compared with aquatic animals, which live predominantly or entirely in the water, or amphibians, which rely on a combination of aquatic and terrestrial habitats. Terrestrial invertebrates include ants, flies, crickets, grasshoppers and spiders.

Contents

Distribution

The distribution of Corona pfeifferi includes:

Pastaza Province Province in Ecuador

Pastaza is a province in the Oriente of Ecuador located in the eastern jungle. The capital is Puyo, founded on May 12, 1899 and which boasts 36,700 inhabitants. The city is now accessible by paved roads, a recent development; the main road from Baños follows the Pastaza river into the province.

Canelos is a rural parish of the canton of Pastaza, in the province of Pastaza. It is located to the southeast of the city of Puyo.

Description

The living animal of Corona pfeifferi has coarse, orange tubercles on a whitish skin. [2] The tentacles are greyish, with a blue hue near the tips. [2]

Tentacle varied organ found in many animals and used for palpation and manipulation

In zoology, a tentacle is a flexible, mobile, elongated organ present in some species of animals, most of them invertebrates. In animal anatomy, tentacles usually occur in one or more pairs. Anatomically, the tentacles of animals work mainly like muscular hydrostats. Most forms of tentacles are used for grasping and feeding. Many are sensory organs, variously receptive to touch, vision, or to the smell or taste of particular foods or threats. Examples of such tentacles are the "eye stalks" of various kinds of snails. Some kinds of tentacles have both sensory and manipulatory functions.

The shell has 8 whorls. [1]

The height of the shell of the type specimen is 59 mm. The width of the shell of the type specimen is 26 mm. The height of the aperture of the type specimen is 25 mm. [1]

Aperture (mollusc) The main opening of the shell, where the head-foot part of the body of the animal emerges

The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where the head-foot part of the body of the animal emerges for locomotion, feeding, etc.

apertural view Corona pfeifferi shell.png
apertural view
abapertural view Corona pfeifferi shell 2.png
abapertural view

Reproductive system: The penis is proximally slender and subcylindrical, constricted at the base; median part is swollen, pear-shaped, tapering towards the distal part which is subcylindrical again. Transition to the epiphallus with a kink, thereafter gradually tapering; twisted. Vas deferens is adhering to and partially inside the penial complex. Flagellum has ca. 1/5 the total length of the penial complex. Internal structure of penial complex is with longitudinal folds in proximal part of penis, changing into a dense tubular network and a widened lumen in the distal part of the penis. The epiphallus has 3-4 longitudinal folds proximally, transversing into anatosmosing folds more distally. In the specimen dissected, a chitinous spermatophore was being formed with the shape of flagellum and epiphallus, its initial stage inside the flagellum and extending to the distal part of the penis. [2]

Reproductive system of gastropods

The reproductive system of gastropods varies greatly from one group to another within this very large and diverse taxonomic class of animals. Their reproductive strategies also vary greatly, see Mating of gastropods.

Spermatophore Packet containing sperm in invertebrate reproduction

A spermatophore or sperm ampulla is a capsule or mass containing spermatozoa created by males of various animal species, especially salamanders and arthropods, and transferred in entirety to the female's ovipore during reproduction. Spermatophores may additionally contain nourishment for the female, in which case it is called a nuptial gift, as in the instance of bush crickets. In the case of the toxic moth Utetheisa ornatrix, the spermatophore includes sperm, nutrients, and pyrrolizidine alkaloids which prevent predation because it is poisonous to most organisms. However, in some species such as the Edith's checkerspot butterfly, the "gift" provides little nutrient value. The spermatophore transferred at mating has little effect on female reproductive output. The alternative hypothesis of its usefulness is that the process of eating the spermatophore prevents the female from subsequent copulation, serving as a mating plug, thereby giving the male's sperm more time to fertilize. In some cephalopods, however, spermatophores from multiple males might be present inside the same female simultaneously.

ventral overview of reproductive system Corona pfeifferi reproductive system.svg
ventral overview of reproductive system
dorsal view of penial complex Corona pfeifferi reproductive system 2.svg
dorsal view of penial complex
half-schematic longitudinal section of penial complex Corona pfeifferi reproductive system 3.svg
half-schematic longitudinal section of penial complex

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References

This article incorporates CC-BY-3.0 text from the reference. [2]

  1. 1 2 3 4 Hidalgo J. G. (1869). "Description d’espèces nouvelles". Journal de Conchyliologie 17: 410-413. Type description on the page 412.
  2. 1 2 3 4 5 6 Breure A. S. H. & Mogollón Avila V. (2010). "Well-known and little-known: miscellaneous notes on Peruvian Orthalicidae (Gastropoda, Stylommatophora)". Zoologische Mededelingen84. HTM.
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