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Limia

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For other uses, see Limia (disambiguation).

Limia
L. tridens
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Cyprinodontiformes
Family: Poeciliidae
Tribe: Poeciliini
Genus: Limia
Poey, 1854
Type species
Limia cubensis
Poey, 1854[1]

Limia is a genus of livebearing fishes belonging to the Cyprinodontiform family Poeciliidae. It comprises 22 described species found in fresh, brackish, saltwater, and hypersaline habitats of the Greater Antilles islands in the Caribbean Sea. A vast majority are endemic to Hispaniola. There has been a long-running debate on whether Limia should be considered a subgenus of Poecilia rather than a full genus. Most Limia species are detrivores and herbivores. Due to their small size and coloring, they are sometimes kept in home aquaria.

Taxonomy

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The genus Limia belongs to Poecilidae, the most abundant and species-rich family of freshwater fish on the Greater Antilles.[2] The generic name Limia, derived from Latin, refers to the muddy habitat of the type species, L. vittata. The genus was established in 1854 by Poey. Rosen and Bailey made it a subgenus of the genus Poecilia in their major reclassification of the poeciliid genera in 1963. Rivas, among others, continued to recognize Limia as a distinct genus and resurrected in 1978, describing eight new species in 1980.[3]

Other Poecilidae genera found on the Antilles include Poecilia, Gambusia, and the endemic genera Girardinus and Quintana. Limia, however, is represented on the islands by more species than any other poeciliid genus, with 22 currently known from Cuba, Grand Cayman, Hispaniola, and Jamaica.[2] Cuba, Grand Cayman, and Jamaica each have one endemic species: L. vittata, L. caymanensis, and L. melanogaster, respectively. The rest are found exclusively on Hispaniola, making the island a center of endemism for the genus. Their distribution on Hispaniola indicates an evolutionary radiation from Lake Miragoâne on the Tiburon Peninsula in particular. Nine species endemic to the lake have been described: L. fuscomaculata, L. garnieri, L. grossidens, L. immaculata, L. islai, L. mandibularis, L. miragoanensis, L. nigrofasciata, and L. ornata.[2][4]

Evolution and phylogeny

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Phylogenetic relationships of Limia, based on the mitochondrial (mt) cytochrome b gene[4]

Most recent studies about the origin of limias conclude that the genus reached the Antilles islands through oceanic dispersal or vicariance.[2] GAARlandia, a hypothesized land bridge connecting the area of the modern islands to the South American mainland during the Eocene–Oligocene transition, might have enabled the fish to colonize the Antilles through a combination of dispersal, vicariance, and island hopping. Limia ancestors are unlikely to have arrived exclusively over land, however, because Limia and all other native Antillean species are tolerant of saltwater; if a land bridge had been sufficient, intolerant species would have also colonized the islands.[5]

Limia forms a clade with Pamphorichthys, Mollienesia, Micropoecilia, and Poecilia.[4] Some authorities advocate for all of these taxa to be considered separate genera, while others maintain that some or all of them should be treated as subgenera of the genus Poecilia. The sister clade to Limia is the one formed by the Hispaniolan Poecilia species P. elegans, P. dominicensis, and P. hispaniolana; all three have been found to be more closely related to Limia than to other Poecilia species, adding to the uncertainty in the taxonomic designations of Poecilia. Limia and the Hispaniolan Poecilia species diverged from Pamphorichthys during the Eocene–Oligocene transition.[5]

The first to split off from the other Limia species, near the Oligocene–Miocene boundary, was L. melanogaster,[5][4] which went on to colonize Jamaica.[4] This was followed by the colonization of the combined Cuba-Hispaniola landmass. When the Windward Passage divided the landmass into the modern islands of Cuba and Hispaniola, the ancestors of L. vittata and L. caymanensis split from the Hispaniolan species.[5]

Species

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Based on the number and shape of teeth and preopercular pores, Rivas separated the Limia species into two subgenera: Limia and Odontolimia. All seven Odontolimia species are endemic to Lake Miragoâne.[6] One species, Pseudolimia heterandria from Venezuela, was placed in the genus Limia when it was described in 1913, but was moved to its own genus, Pseudolimia, in 2002.[7]

Odontolimia

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Limia

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Ecology

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A typical habitat of L. sulphurophila and L. melanonotata

Most Limia species inhabit inland waters[2] such as rivers, springs, and lakes. Some are confined to relatively cool mountain streams.[11] While most are found in freshwater habitats, some species inhabit karst environments high in dissolved inorganic salts or in saline lakes. A few are even found in hypersaline coastal lagoons.[2][4]

Most Limia species prefer to feed on detritus and algae, with some Hispanionalan species, such as L. nigrofasciata, showing a specialization in detrivory. A trend towards a limnivore diet has also been recorded in the genus. Widespread species such as L. perugiae, L. versicolor, and L. zonata have been found to have a more generalized diet, which (especially in the wet season) includes aquatic invertebrates.[12]

Traits

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Limias are small fish, ranging from 1 in (25 mm) to 3 in (76 mm). Many limias have glimmering scales and the color of the sides of the body often contrasts the color of the fins. Hispaniolan limias tend to have color in their dorsal fin. Those native to Haiti (western Hispaniola) often have stripes.[3]

A male L. melanogaster courting a female

Like many poeciliid fish, limias are livebearers.[2] Three species exhibit elaborate premating behavior, with males performing courtship display for females: L. melanogaster, L. nigrofasciata, and L. perugiae. The courtship display evolved in the genus on at least two, and possibly three, separate occasions. Traits such as black edges of the caudal fin and black undersides of the body are phylogenetically correlated with courtship display and probably reflect female choice. The other mating strategy, available to the courting species as well, is the gonopodial thrusting (also called opportunistic mating, forced copulation, or sneak-and-chase), which is ancestral in poeciliids and involves the males attempting to mate without female cooperation. The males' vertical bars and yellow coloration in the caudal fin appear to have evolved before courtship.[13]

Fishkeeping

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Limias' small size makes them suitable for keeping in home aquaria. Most species can be maintained in a 10 US gal (38 L; 8.3 imp gal) aquarium.[3] Limias, particularly L. melanogaster and L. nigrofasciata, were more common in the fishkeeping hobby until the advent of the fancy varieties of guppies, mollies, platies, and swordtails.[14]

References

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  1. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Limia". Catalog of Fishes. California Academy of Sciences. Retrieved 5 November 2019.
  2. ^ a b c d e f g Rodriguez-Silva, Rodet; Torres-Pineda, Patricia; Josaphat, James (2020). "Limia mandibularis, a new livebearing fish (Cyprinodontiformes: Poeciliidae) from Lake Miragoane, Haiti". Zootaxa. 4768 (3): 395–404. doi:10.11646/zootaxa.4768.3.6.
  3. ^ a b c Coletti, Ted (November 2007). "Livebearers Unlimited: The Caribbean Jewels". Tropical Fish Hobbyist. TFH Publications.
  4. ^ a b c d e f Spikes, Montrai; Rodríguez-Silva, Rodet; Bennett, Kerri-Ann; Bräger, Stefan; Josaphat, James; Torres-Pineda, Patricia; Ernst, Anja; Havenstein, Katja; Schlupp, Ingo; Tiedemann, Ralph (2021). "A phylogeny of the genus Limia (Teleostei: Poeciliidae) suggests a single-lake radiation nested in a Caribbean-wide allopatric speciation scenario". BMC Research Notes. 14 (425): 425. doi:10.1186/s13104-021-05843-x. PMC 8613956. PMID 34823576.
  5. ^ a b c d Weaver, Pablo; Cruz, Alexander; Johnson, Steven Euston; Dupin, Julia; Weaver, Kathleen (June 2016). "Colonizing the Caribbean: Biogeography and evolution of livebearing fishes of the genus Limia (Poeciliidae)". Journal of Biogeography. 43 (9): 1808–1819. Bibcode:2016JBiog..43.1808W. doi:10.1111/jbi.12798. S2CID 89184942. Archived from the original on 10 April 2023. Retrieved 10 April 2023.
  6. ^ Rivas, Luis R. (1980). "Eight new species of poeciliid fishes of the genus Limia from Hispaniola" (PDF). Northeast Gulf Science. 4 (1): 29–31. Retrieved 4 August 2024.
  7. ^ Poeser, Fred N. (2002). "Pseudolimia n. gen., a new monotypic genus for Limia heterandria Regan, 1913 (Teleostei:Poeciliidae)". Beaufortia. 52 (6): 53–56. Retrieved 15 September 2024.
  8. ^ "Tiger Limia". IUCN Red List of Threatened Species. 2020-06-16. Retrieved 2022-08-18.
  9. ^ Lyons, T.J.; Rodríguez-Silva, R. (2021). "Limia tridens". IUCN Red List of Threatened Species. 2021: e.T177038495A177038510. doi:10.2305/IUCN.UK.2021-1.RLTS.T177038495A177038510.en. Retrieved 18 November 2021.
  10. ^ Rodríguez-Silva, R.; Rodriguez, C.; Schlupp, I.; Lyons, T.J. (2021). "Limia yaguajali". IUCN Red List of Threatened Species. 2021: e.T125986113A125986653. doi:10.2305/IUCN.UK.2021-1.RLTS.T125986113A125986653.en. Retrieved 18 November 2021.
  11. ^ Haney, Dennis C.; Walsh, Stephen J. (December 2003). "Influence of salinity and temperature on the physiology of Limia melanonotata (Cyprinodontiformes: Poeciliidae): A search for abiotic factors limiting insular distribution in Hispaniola". Caribbean Journal of Science. 39 (3).
  12. ^ Rodriguez-Silva, Rodet; Spikes, Montrai; Iturriaga, Manuel; Bennett, Kerri-Ann; Josaphat, James; Torres-Pineda, Patricia; Bräger, Stefan; Schlupp, Ingo (11 October 2021). "Feeding strategies and diet variation in livebearing fishes of the genus Limia (Cyprinodontiformes: Poeciliidae) in the Greater Antilles". Ecology of Freshwater Fish. 31 (2): 389–400. doi:10.1111/eff.12638. S2CID 244612970. Retrieved 22 September 2023.
  13. ^ Hamilton, Aaron (2001). Molecular Phylogenetics and the Evolution of Courtship Behavior, Body Shape, and Coloration in the Livebearing Fish Genus Limia (Thesis). University of Californi, Riverside.
  14. ^ Neal Monks. "7 Forgotten Livebearers". Tropical Fish Hobbyist. Archived from the original on 2023-04-12. Retrieved 2023-04-12.
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