Stripetail darter

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Stripetail darter
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Family: Percidae
Genus: Etheostoma
Species:
E. kennicotti
Binomial name
Etheostoma kennicotti
(Putnam, 1863)
Synonyms
  • Catonotus kennicottiPutnam, 1863

The stripetail darter (Etheostoma kennicotti) is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is endemic to the eastern United States. It is found in small rivers and streams in the states of Tennessee, Ohio, Kentucky, Illinois, Alabama, Georgia, and Mississippi. Males are a golden-orange color with black barring on the fins, and grow to a length of about 2.8 in (7 cm). This fish feeds on midge larvae and other small invertebrates. It breeds in the spring; eggs are attached to the substrate, often under slab rocks, where they are guarded by the male. The population trend of this fish seems to be stable and it is a common species with numerous sub-populations over a wide range, and the International Union for Conservation of Nature has assessed its conservation status as being of "least concern".

Contents

Description

The stripetail darter males are golden orange and as adults can grow up to 2.8 inches (7.1 cm) long. It also has black bands present on the caudal fins and soft dorsal fins.

Distribution and habitat

The stripetail darter is a small, benthic freshwater fish that inhabits river tributaries. Historic or native geographic range of the stripetail darter is likely similar to its current range. Currently, the stripetail darter inhabits tributaries of the Ohio, Tennessee, Cumberland, and Paint Rock river systems. The Green River drainage in Kentucky also contains a population of stripetail darters. [2] The Paint Rock river system and Ohio River systems hold the largest populations of the species and it is less common throughout the Tennessee River system. The stripetail darter inhabits states including Tennessee, Ohio, Kentucky, Illinois, Alabama, Georgia, and Mississippi. [1] The stripetail darter's distribution is typically spotty throughout its range with multiple subpopulations; however, the species is still abundant overall. Page and Smith discovered that the species also varies slightly depending on where the subpopulation of the species occurs. [3] This isolation of the populations could be due to climate effects such as low temperatures and low water levels. [4] The current estimated population is over 10,000 individuals through the range of this fish. The population is stable. [1]

Ecology

The diet of the stripetail darter includes mayflies, fishflies, midge larvae, isopods, stoneflies, and cladocerans. [5] Stripetail darters are able to live in a wide range of pH levels and water temperatures. [6] Typically these darters also live in slab pools in streams and headwaters, [7] as well as creeks and small slow-flowing rivers with rocky substrate and rubble, in riffles, under stones and under overhanging banks in pools; it often occurs among emergent vegetation. [1]

Life history

The breeding season for the stripetail darter in lower Ohio River tributaries begins in late March to early April and continues until late May. Stripetails breed in water between 57 and 68 °F (14 and 20 °C). Stripetail darter eggs are small, between 0.075 to 0.098 inches (1.9 to 2.5 mm) in diameter, spherical and adhesive. [8] The eggs are usually laid under slabrocks in medium-sized or smaller streams that feed into larger bodies of water. The slabrocks provide shelter and protection for the eggs and allow males to guard them more efficiently. [5] The stripetail also prefers overhanging vegetation to be present near the spawning sites and gravel or sandy bottoms. [1] The stripetail darter lays anywhere from 50 to 400 eggs at a time. Newly hatched stripetail darters are typically around .16 to .19 inches (4.1 to 4.8 mm) in length and have fully developed pectoral fins with 12 incipient rays. [8] Stripetails reach sexual maturity one year after birth. The maximum lifespan of this fish is 3 years. [5]

Conservation

As of 2013, there are no management plans in place specifically aimed at the conservation of the stripetail darter. They are not listed on the endangered species list and their populations are considered stable. It is estimated that over 10,000 are alive in the wild today and this number is high enough for sustainability. [1]

Taxonomy and etymology

The stripetail darter was first formally described as Catonotus kennicotti in 1863 by the American zoologist Frederic Ward Putnam (1839-1914). [9] The specific name honors the collector of the type, Mr R. Kennicott. [10]

Related Research Articles

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The saddleback darter is a species of freshwater ray-finned fish, a darter from the subfamily Etheostomatinae, part of the family Percidae, which also contains the perches, ruffes and pikeperches. It is native to the eastern United States. This darter species is widespread, occurring from the Escambia River drainage west to the Mississippi River basin and as far north as the Wabash River historically. Some populations have been reported in the Tennessee River drainage. The saddleback darter is aptly named as it has 5 saddle-like patterns on its dorsum, with the first occurring near the first dorsal fin and the fifth near the caudal penduncle. Adults can attain a maximum size of about 3 inches or 7.8 centimeters. The saddleback darter typically occurs over sand and gravel runs of creeks and small to medium-sized rivers and is sometimes found in very shallow water. This darter's diet consists of invertebrates such as caddisfly larvae, beetles, mayflies, and stoneflies. The saddleback darter deposits eggs over sand and gravel shoals during the spring. This species has an average lifespan between 2 and 3 years.

References

  1. 1 2 3 4 5 6 NatureServe (2013). "Etheostoma kennicotti". IUCN Red List of Threatened Species . 2013: e.T202496A2745324. doi: 10.2305/IUCN.UK.2013-1.RLTS.T202496A2745324.en . Retrieved 20 November 2021.
  2. Froese, Rainer; Pauly, Daniel (eds.) (2019). "Etheostoma kennicotti" in FishBase . December 2019 version.
  3. Page, Lawrence M. and Philip W. Smith. (1976). Variation and Systematics of the Stripetail Darter, Etheostoma kennicotti. Copeia. 1976:532-541
  4. Keck, B. P. and Near, T. J. (2010), A young clade repeating an old pattern: diversity in Nothonotus darters (Teleostei: Percidae) endemic to the Cumberland River. Molecular Ecology, 19: 5030–5042.
  5. 1 2 3 "Stripetail". Outdoor Alabama. Retrieved 11 October 2020.
  6. "Stripetail darter". Aquastore. Retrieved 11 October 2020.
  7. Tiemann, J.S. and J.L. Sherwood. (2011). Status, distribution, and habitat preferences of the stripetail darter Etheostoma kennicotti and spottail Darter Etheostoma squamiceps in the Shawnee National Forest, Illinois.
  8. 1 2 Simon, Thomas P. (1987). Description of Eggs, Larvae and Early Juveniles of the Stripetail Darter, Etheostoma kennicotti (Putnam) and Spottail Darter, E. squamiceps Jordan (Percidae: Etheostomatini) from Tributaries of the Ohio River. Copeia 1987:433-442
  9. Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Catonotus kennicotti". Catalog of Fishes . California Academy of Sciences . Retrieved 11 October 2020.
  10. Putnam, F. W. (1863). "List of the fishes sent by the museum to different institutions, in exchange for other specimens, with annotations". Bulletin of the Museum of Comparative Zoology. 1: 2–16.