However, American shad (Alosa sapidissima
) have recently been shown to have determinate fecundity in northern populations and indeterminate fecundity in southern populations (McBride et al., 2016), as predicted for species with wide geographic ranges by Ganias et al.
(148) See, e.g., Hare et al., supra note 145, at 22 ("Alewife [(Alosa pseudoharengus)] and American Shad [(Alosa sapidissima
)] have exhibited some of the greatest shifts in distribution in the ecosystem, but the potential for a change in species distribution was low.").
Extirpation of Polyodon spatula, Alosa sapidissima
, Moxostoma lacerum, and Sander glacum occurred; however, A.
Members of the Alosa genus, including the American shad (Alosa sapidissima
) and Twaite shad (Alosa fallax), demonstrate heterochronal spawning (10, 11).
(Wilson): American Shad; no account in text, Plate XXIX (Fig.
Genetic diversity and differentiation in a wide ranging anadromous fish, American shad (Alosa sapidissima
), is correlated with latitude.
The first to develop corresponds to the otic neuromast (from the preotic series), also observed in other clupeiforms such as Alosa sapidissima
Induced spawning of wild American shad (Alosa sapidissima
) usingsustained administration of gonadotropin-releasing hormone analog (GnRHa).
(120) Both the American shad, Alosa sapidissima
(Wilson), and striped bass, Morone saxatilis (Walbaum), are desirable food fishes, native to the eastern United States.
1978, Johnson y Dropkin 1992), en donde se menciona que la dieta de esta especie esta constituida por componentes de origen animal como cladoceros, anfipodos dipteros, megalopteros y larvas de peces (Alosa sapidissima
Although generally not considered to be a problematic species, darters (not the Iowa darter) prey upon newly stocked larvae of American shad Alosa sapidissima
(Johnson and Dropkin, 1992).
Lab tests show that Alosa sapidissima
, the American shad--a small fish related to herring--can hear frequencies as high as 180 kilohertz.