scholarly journals Vertical Pupil in a Lemon Shark

Ophthalmology ◽  
2021 ◽  
Vol 128 (2) ◽  
pp. 316
Author(s):  
Ivan R. Schwab ◽  
David G. Heidemann
Keyword(s):  
Lemon Shark

Anatomy of the feeding apparatus of the lemon shark,Negaprion brevirostris

1995 ◽  
Vol 226 (3) ◽  
pp. 309-329 ◽  
Author(s):  
Philip J. Motta ◽  
Cheryl A. D. Wilga
Keyword(s):  
Feeding Apparatus ◽  
Lemon Shark ◽  
Negaprion Brevirostris

Stock Assessment of the Lemon Shark off the Southeast United States

2020 ◽  
Author(s):  
Alexander C. Hansell ◽  
Tobey H. Curtis ◽  
John Carlson ◽  
Enric Cortés ◽  
Gavin Fay ◽  
...  
Keyword(s):  
United States ◽  
Stock Assessment ◽  
Lemon Shark ◽  
Southeast United States

Demography of the central california population of the Leopard Shark (Triakis semifasciata)

1992 ◽  
Vol 43 (1) ◽  
pp. 183 ◽  
Author(s):  
GM Cailliet
Keyword(s):  
Population Growth ◽  
Reproductive Rate ◽  
Shark Species ◽  
Sandbar Shark ◽  
Lemon Shark ◽  
Carcharhinus Plumbeus ◽  
Net Reproductive Rate ◽  
Leopard Shark ◽  
Triakis Semifasciata ◽  
Leopard Sharks

Demographic analyses can be quite useful for effectively managing elasmobranch fisheries. However, they require valid estimates of age-specific mortality and natality rates, in addition to information on the distribution, abundance, habits and reproduction of the population, to produce reliable estimates of population growth. Because such detailed ecological information is usually unavailable, complete demographic analyses have been completed for only four shark species: the spiny dogfish, Squalus acanthias; the soupfin shark, Galeorhinus australis; the lemon shark, Negaprion brevirostris; and most recently the sandbar shark, Carcharhinus plumbeus. In California, reliable estimates of age, growth, mortality, age at maturity, and fecundity are available only for the leopard shark, Triakis semifasciata. A demographic analysis of this species yielded a net reproductive rate (Ro) of 4.467, a generation time (G) of 22.35 years, and an estimate of the instantaneous population growth coefficient (r) of 0.067. If the mean fishing pressure over 10 years (F= 0.084) is included in the survivorship function, Ro and r are reduced considerably, especially if leopard sharks first enter the fishery at early ages. A size limit of 120 cm TL (estimated age 13 years), especially for female sharks, is tentatively proposed for the leopard shark fishery.

RECONSTRUCTION OF PARENTAL MICROSATELLITE GENOTYPES REVEALS FEMALE POLYANDRY AND PHILOPATRY IN THE LEMON SHARK, NEGAPRION BREVIROSTRIS

Evolution ◽  
2004 ◽  
Vol 58 (10) ◽  
pp. 2332 ◽  
Author(s):  
Kevin A. Feldheim ◽  
Samuel H. Gruber ◽  
Mary V. Ashley
Keyword(s):  
Lemon Shark ◽  
Negaprion Brevirostris

scholarly journals Low Pufferfish and Lionfish Predation in Their Native and Invaded Ranges Suggests Human Control Mechanisms May Be Necessary to Control Their Mediterranean Abundances

2021 ◽  
Vol 8 ◽  
Author(s):  
Aylin Ulman ◽  
Holden E. Harris ◽  
Nikos Doumpas ◽  
Hasan Deniz Akbora ◽  
Sara A. A Al Mabruk ◽  
...  
Keyword(s):  
Mediterranean Sea ◽  
Population Control ◽  
Octopus Vulgaris ◽  
Tiger Shark ◽  
Lemon Shark ◽  
Western Atlantic ◽  
Pterois Miles ◽  
Common Octopus ◽  
The Mediterranean ◽  
Lagocephalus Sceleratus

The silver-cheeked toadfish (Lagocephalus sceleratus, from the pufferfish family Tetraodontidae) and the Pacific red lionfish (Pterois miles, family Scorpaenidae) have recently invaded the Mediterranean Sea. Lagocephalus sceleratus has spread throughout this entire sea with the highest concentrations in the eastern basin, while more recently, Pterois miles has spread from the Eastern to the Central Mediterranean Sea. Their effects on local biodiversity and fisheries are cause for management concern. Here, a comprehensive review of predators of these two species from their native Indo-Pacific and invaded Mediterranean and Western Atlantic ranges is presented. Predators of Tetraodontidae in general were reviewed for their native Indo-Pacific and Western Atlantic ranges, as no records were found specifically for L. sceleratus in its native range. Tetraodontidae predators in their native ranges included mantis shrimp (Stomatopoda), lizardfish (Synodus spp.), tiger shark (Galeocerdo cuvier), lemon shark (Negaprion brevirostris), sea snakes (Enhydrina spp.), catfish (Arius spp.), cobia (Rachycentron canadum), skipjack tuna (Katsuwonus pelamis), and common octopus (Octopus vulgaris). The only reported predator of adult L. sceleratus in the Mediterranean was loggerhead turtle (Caretta caretta), whereas juvenile L. sceleratus were preyed by common dolphinfish (Coryphaena hippurus) and garfish (Belone belone). Conspecific cannibalism of L. sceleratus juveniles was also confirmed in the Mediterranean. Pufferfish predators in the Western Atlantic included common octopus, frogfish (Antennaridae), and several marine birds. Predators of all lionfish species in their native Indo-Pacific range included humpback scorpionfish (Scorpaenopsis spp.), bobbit worms (Eunice aphroditois), moray eels (Muraenidae), and bluespotted cornetfish (Fistularia commersonii). Lionfish predators in the Mediterranean included dusky grouper (Epinephelus marginatus), white grouper (Epinephelus aeneus), common octopus, and L. sceleratus, whereas in the Western Atlantic included the spotted moray (Gymnothorax moringa), multiple grouper species (tiger Mycteroperca tigris, Nassau Epinephelus striatus, black Mycteroperca bonaci, red Epinephelus morio, and gag Mycteroperca microleps; Epinephelidae), northern red snapper (Lutjanus campechanus), greater amberjack (Seriola dumerilli), and nurse shark (Ginglymostoma cirratum). The sparse data found on natural predation for these species suggest that population control via predation may be limited. Their population control may require proactive, targeted human removals, as is currently practiced with lionfish in the Western Atlantic.

scholarly journals Assortative interactions and leadership in a free-ranging population of juvenile lemon shark Negaprion brevirostris

2011 ◽  
Vol 423 ◽  
pp. 235-245 ◽  
Author(s):  
TL Guttridge ◽  
SH Gruber ◽  
JD DiBattista ◽  
KA Feldheim ◽  
DP Croft ◽  
...  
Keyword(s):  
Lemon Shark ◽  
Negaprion Brevirostris ◽  
Free Ranging
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