Alosa mediocris | |
---|---|
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Actinopterygii |
Order: | Clupeiformes |
Family: | Alosidae |
Genus: | Alosa |
Species: | A. mediocris |
Binomial name | |
Alosa mediocris (Mitchill, 1814) | |
Synonyms [2] | |
Clupea mediocris (Mitchill, 1814) Contents |
The hickory shad (Alosa mediocris), fall herring, mattowacca, [3] [4] [a] freshwater taylor or bonejack [5] is a member of the family Alosidae, ranging along the East Coast of the United States from Florida to the Gulf of Maine. It is an anadromous fish species, meaning that it spawns in freshwater portions of rivers, but spends most of its life at sea. It is subject to fishing, both historic and current, but it is often confused with or simply grouped together with American shad (A. sapidissima) in catch statistics.
Hickory shad are elongate, laterally compressed fish with a tapering cross section. [6] The scales on the belly are serrated. [7] The fish is green-gray on its upper surface, becoming iridescent silver on the sides and white below. [7] [8] The scales bear small dark markings. [6] A humeral spot is present and is frequently followed by a short series of fainter spots. [8] The hickory shad can be distinguished from American shad by its lower jaw, which will project beyond the snout in the hickory shad. [9]
Hickory shad range from northern Florida to the Gulf of Maine. The largest populations occur in Chesapeake Bay and coastal North Carolina. [10] It is a schooling anadromous species that inhabits marine waters, probably never far from land. Adults enter estuaries and freshwater tributaries from the St. John's River, Florida, [11] to the Patuxent River, Maryland, to spawn during the spring. Their oceanic movements are poorly documented. [12] [13] [14]
Spawning occurs from December to June, earliest in Florida and later with increasing latitude. [12] [15] The slightly adhesive and demersal eggs, about 1 mm in diameter, appear to be dispersed at random over gravel bars in moderate current. After water hardening, the eggs become semibuoyant and develop as they drift along the bottom. [12] [13] [16] Fecundity ranges from 43,000 – 475,000 eggs per female, and although the developmental stages of eggs, larvae, and juveniles have been described, little is known concerning the distribution, ecology, and growth rates of these early life stages. [12] [16]
Hickory shad live to seven years. [15] Both sexes mature starting at 2 years of age and can repeat spawn. [15] [17] Females are larger than males; in Florida, the average female is 37 centimetres (15 in) fork length and the average male is 34 centimetres (13 in) fork length. [15]
Hickory shad are piscivorous, feeding primarily on small fishes, although crustaceans and squid contribute to their diet. [10] [13] One study from Florida showed that their diet on the spawning grounds was almost exclusively fish (97% by weight), [15] but feeding is limited during the freshwater migration [15] [17] and mesenteric fat reserves developed prior to migration are metabolized en route. [17]
Hickory shad have a relatively low commercial value, but an increasingly popular recreational fishery exists throughout the mid-Atlantic states. By the late 1980s and early 1990s, hickory shad articles appeared in sport-fishing magazines. Headlines such as "the tough fighting hickory shad swarm near the rock-studded fall line…" [18] and "feast on Rappahannock River hickory shad action" [19] brought attention to the fishery. Subsequently, specialty magazines [20] and sports sections in national newspapers [21] began proclaiming the excitement of hickory shad fishing ("HICKORY SHAD ARE RUNNING!") and the recovery of the fishery. In the two most recent years of a North Carolina creel survey (2004–2005), hickory shad – a fish only present for two months of the year – moved from sixth- to the fourth-most targeted fish by coastal anglers. [22] They are also taken by recreational fishing for use as bait to catch larger fish. [23]
Most information about this species is contained in federal and state documents and management plans or theses from universities. Federal publications include reports from the Atlantic States Marine Fisheries Commission's (ASMFC) Interstate Fishery Management Plan for Shad and River Herring. [24] [25] Prominent publications by state agencies include reports based on fishery monitoring programs in Connecticut, [26] Pennsylvania and Maryland, [27] North Carolina, [28] South Carolina, Georgia, [29] [30] [31] and Florida. [32] [33] [15] [34] [35] A few publications address coast-wide and/or genus-level stock status and management issues. [14] [36] The U.S. Fish and Wildlife Service published a useful series that includes egg, larvae, and juvenile development descriptions of hickory shad. [12] A recent review of hickory shad in Chesapeake Bay places management of this species in an ecosystem context. [37] Three master of science theses also studied them. [38] [39] [40]
Although hickory shad research has been limited, other clupeids, especially Alosa species in the United States, have received more attention. [41] American shad (A. sapidissima), which overlaps in distribution with hickory shad, has been frequently studied. [42] [43] [44] [45] [46] [47] [48] [49] [41] [50]
The striped bass, also called the Atlantic striped bass, striper, linesider, rock, or rockfish, is an anadromous perciform fish of the family Moronidae found primarily along the Atlantic coast of North America. It has also been widely introduced into inland recreational fisheries across the United States. Striped bass found in the Gulf of Mexico are a separate strain referred to as Gulf Coast striped bass.
Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousands of kilometres. Such migrations are usually done for better feeding or to reproduce, but in other cases the reasons are unclear.
The Patapsco River mainstem is a 39-mile (63 km) river in central Maryland that flows into the Chesapeake Bay. The river's tidal portion forms the harbor for the city of Baltimore. With its South Branch, the Patapsco forms the northern border of Howard County, Maryland. The name "Patapsco" is derived from the Algonquian pota-psk-ut, which translates to "backwater" or "tide covered with froth".
The alewife is an anadromous species of herring found in North America. It is one of the "typical" North American shads, attributed to the subgenus Pomolobus of the genus Alosa. As an adult it is a marine species found in the northern West Atlantic Ocean, moving into estuaries before swimming upstream to breed in freshwater habitats, but some populations live entirely in fresh water. It is best known for its invasion of the Great Lakes by using the Welland Canal to bypass Niagara Falls. Here, its population surged, peaking between the 1950s and 1980s to the detriment of many native species of fish. In an effort to control it biologically, Pacific salmon were introduced, only partially successfully. As a marine fish, the alewife is a US National Marine Fisheries Service "Species of Concern".
The American shad is a species of anadromous clupeid fish naturally distributed on the North American coast of the North Atlantic, from Newfoundland to Florida, and as an introduced species on the North Pacific coast. The American shad is not closely related to the other North American shads. Rather, it seems to form a lineage that diverged from a common ancestor of the European taxa before these diversified.
Alosa is a genus of fish, the river herrings, in the family Alosidae. Along with other genera in the subfamily Alosinae, they are generally known as shads. They are distinct from other herrings by having a deeper body and spawning in rivers. Several species can be found on both sides of the Atlantic Ocean and the Mediterranean Sea. Also, several taxa occur in the brackish-water Caspian Sea and the Black Sea basin. Many are found in fresh water during spawning and some are only found in landlocked fresh water.
The blue catfish is a large species of North American catfish, reaching a length of 65 in (170 cm) and a weight of 143 lb (65 kg). The continent’s largest catfish, it can live to 20 years, with a typical fish being between 25–46 in (64–117 cm) and 30–70 lb (14–32 kg). Native distribution is primarily in the Mississippi River and Louisiana drainage systems, including the Missouri, Ohio, Tennessee, and Arkansas Rivers, the Des Moines River in south-central Iowa, the Rio Grande, and south along the Gulf Coast to Belize and Guatemala.
The Atlantic menhaden is a North American species of fish in the herring family, Alosidae.
The Atlantic States Marine Fisheries Commission (ASMFC) is a commission of U.S. states formed to coordinate and manage fishery resources—including marine (saltwater) fish, shellfish, and anadromous fish —along the Atlantic coast of the United States.
The skipjack herring is a North American, migratory, fresh- and brackish water fish species in the herring family Alosidae. The name skipjack shad comes from the fact that it is commonly seen leaping out of the water while feeding. Other common names include blue herring, golden shad, river shad, Tennessee tarpon, and McKinley shad. The skipjack shad is restricted to the Gulf of Mexico drainage basins. Skipjack are found in clear to moderately turbid water in areas with flow. Because they are a migratory species, dams often impede their reproduction. Records suggest that this species was much more abundant in the Upper Mississippi River basin before it was impounded. Currently, skipjack is most abundant in the Upper Mississippi River below the mouth of the Ohio River. They are known as an "early-run" species as they migrate to spawn in the early spring.
The allis shad is a widespread Northeast Atlantic species of fish in the Alosidae family. It is an anadromous fish which migrates into fresh water to spawn. It is found in the eastern Atlantic Ocean, the western Baltic Sea and the western Mediterranean Sea. In appearance it resembles an Atlantic herring but has a distinctive dark spot behind the gill cover and sometimes a row of up to six spots behind this. It sometimes hybridises with the twait shad. This fish becomes mature when three or more years old and migrates to estuaries, later swimming up rivers to spawn. Populations of this fish have declined due to overfishing, pollution and habitat destruction. Conservation of this species is covered by Appendix III of the Bern Convention and Appendix II and V of the European Community Habitats Directive.
The twait shad or twaite shad is a species of fish in the family Alosidae. It is found in the eastern Atlantic Ocean and the Mediterranean Sea and is an anadromous fish which lives in the sea but migrates into fresh water to spawn. In appearance it resembles an Atlantic herring but has a row of six to ten distinctive spots on its silvery flanks. They become mature when three or more years old and migrate to estuaries, later swimming up rivers to spawn. Populations of this fish have declined due to overfishing, pollution and habitat destruction. Conservation of this species is covered by Appendix III of the Bern Convention and Appendix II and V of the European Community Habitats Directive.
Striped bass are perciform fish found all along the Atlantic coast, from Florida to Nova Scotia. A distinct strain has historically existed in the Gulf of Mexico, but the fishery that exists there today is for stocked or reservoir-escapee fish. Striped bass are of significant value as sporting fish, and have been introduced to many areas outside their native range.
Shad is a type of fish, much valued as a sport fish. The male shad is an excellent game fish, showing multiple jumps and an occasional end-over-end; it has been called a "freshwater tarpon". The gravid female does not fight much, but is often kept for the roe. The current world record is listed by the IGFA as 11 pounds 4 ounces (5.1 kg), set at Holyoke Dam, Massachusetts, on 19 May 1986 by Robert A. Thibodo.
The blueback herring, blueback shad, or summer shad is an anadromous species of herring from the east coast of North America, with a range from Nova Scotia to Florida. Blueback herring form schools and are believed to migrate offshore to overwinter near the bottom.
Alosa braschnikowi, the Caspian marine shad or Brazhnikov's shad, is one of the alosid fish species endemic to the Caspian Sea.
The Pontic shad, also referred to as the Black Sea shad or Kerch shad, is a species of clupeid fish in the genus Alosa, native to the Black Sea and Sea of Azov basins.
Alosa kessleri, also referred to as the Caspian anadromous shad, the blackback, or the black-spined herring, is a species of alosid fish. It is one of the several species of shad endemic to the Caspian Sea basin.
The Shad Foundation is an international non-profit 501(c)(3) organization established in 1996 for the study, protection, and celebration of shads around the world. Currently, there are more than 30 recognized shad species worldwide. Shad, which are members of the herring family, are widely distributed, and many are anadromous, meaning that they migrate from fresh to salt water as juveniles and return to freshwater for the express purpose of spawning. Many species are threatened by water pollution, overfishing, habitat destruction, and obstacles to migration, such as dams.
The Alabama shad is an anadromous species of alosid fish endemic to the United States where it breeds in medium to large flowing rivers from the Mississippi River drainage to the Suwannee River, Florida, as well as some other Gulf coast drainages. The biology of this fish is little known but it has become increasingly rare. The International Union for Conservation of Nature rated it "near threatened" in 2020 and the United States National Marine Fisheries Service has listed it as a Species of Concern. A principal reason for its decline is thought to be the many locks and dams blocking access for the fish to up-river spawning grounds.