Assessing reproductive potential and gestation in nurse sharks (Ginglymostoma cirratum) using ultrasonography and endoscopy: An example of bridging the gap between field research and captive studies

Zoo Biology ◽  
2003 ◽  
Vol 22 (2) ◽  
pp. 179-187 ◽  
Author(s):  
Jeffrey C. Carrier ◽  
Frank L. Murru ◽  
Michael T. Walsh ◽  
Harold L. Pratt
Keyword(s):  
Reproductive Potential ◽  
Field Research ◽  
Ginglymostoma Cirratum ◽  
Nurse Sharks

Parasitic Meningoencephalitis in Nurse Sharks (Ginglymostoma cirratum)

1993 ◽  
Vol 29 (3) ◽  
pp. 502-506 ◽  
Author(s):  
Kelly M. Credille ◽  
Linda K. Johnson ◽  
Renate Reimschuessel
Keyword(s):  
Ginglymostoma Cirratum ◽  
Nurse Sharks

scholarly journals Evasive mating behaviour by female nurse sharks, Ginglymostoma cirratum (Bonnaterre, 1788), in an equatorial insular breeding ground

2016 ◽  
Vol 14 (4) ◽  
Author(s):  
André S. Afonso ◽  
◽  
Carlos V. Cantareli ◽  
Rafael P. Levy ◽  
Leonardo B. Veras ◽  
...  
Keyword(s):  
Mating Behaviour ◽  
Management Strategies ◽  
Ventral Side ◽  
Human Pressure ◽  
Nurse Shark ◽  
Ginglymostoma Cirratum ◽  
Fernando De Noronha ◽  
Body Rolling ◽  
Female Nurse ◽  
Nurse Sharks

ABSTRACT Mating events and aggregations of vulnerable nurse sharks Ginglymostoma cirratum were recorded in the insular protected area of Fernando de Noronha (FEN), Brazil, between April and August 2015. Female sharks were observed clustering in groups of up to 14 individuals in shallow water adjacent to the shore. Several evasive mating behaviours in the presence of males were noticed, including shoreward movement, positioning ventral side up at the sea surface with emerged pectoral and pelvic fins, body rolling and caudal fin thrashing. Fresh bite marks indicative of male courtship and coupling attempts were visible in female's pectoral and caudal fins. Altogether, the observed behaviours match previous reports of non-cooperative female nurse sharks during mating opportunities. An extended mating season coupled with a persistent use of inshore habitats result in nurse sharks being particularly vulnerable to human pressure during a most sensitive stage of their life cycle. The effective conservation of nurse shark populations from the western South Atlantic may thus depend on the protection of critical habitats where this species aggregates to reproduce. Explicitly addressing environmental requirements by vulnerable species in local management strategies is indispensable to ensure that human pressure, including ecotourism development, does not collide with stipulated conservation aims.

Body movement as an indicator of proceptive behavior in nurse sharks (Ginglymostoma cirratum)

2020 ◽  
Vol 103 (10) ◽  
pp. 1257-1263
Author(s):  
Helen Colbachini ◽  
Cristiane Schilbach Pizzutto ◽  
Pedro Nacib Jorge-Neto ◽  
Rafael Caprioli Gutierrez ◽  
Otto Bismarck Fazzano Gadig
Keyword(s):  
Body Movement ◽  
Ginglymostoma Cirratum ◽  
Nurse Sharks

Defensive strategies of neonate nurse sharks, Ginglymostoma cirratum, in an oceanic archipelago of the Western Central Atlantic

2014 ◽  
Vol 18 (2) ◽  
pp. 167-171 ◽  
Author(s):  
Ricardo Clapis Garla ◽  
Domingos Garrone-Neto ◽  
Otto Bismarck Fazzano Gadig
Keyword(s):  
Defensive Strategies ◽  
Ginglymostoma Cirratum ◽  
Central Atlantic ◽  
Nurse Sharks

Nurse sharks, space rockets and cargo ships: Metals and oxidative stress in a benthic, resident and large-sized mesopredator, Ginglymostoma cirratum

2021 ◽  
pp. 117784
Author(s):  
Natascha Wosnick ◽  
Ana Paula Chaves ◽  
Renata Daldin Leite ◽  
Jorge Luiz Silva Nunes ◽  
Tatiana Dillenburg Saint’Pierre ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Ginglymostoma Cirratum ◽  
And Oxidative Stress ◽  
Nurse Sharks

Visual discrimination following partial telencephalic ablations in nurse sharks (Ginglymostoma cirratum)

1978 ◽  
Vol 180 (2) ◽  
pp. 325-344 ◽  
Author(s):  
R. Curtis Graeber ◽  
Dolores M. Schroeder ◽  
John A. Jane ◽  
Sven O. E. Ebbesson
Keyword(s):  
Visual Discrimination ◽  
Ginglymostoma Cirratum ◽  
Nurse Sharks

scholarly journals Nation-wide assessment of the distribution and population size of the data-deficient nurse shark (Ginglymostoma cirratum)

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256532
Author(s):  
Francesco Garzon ◽  
Rachel T. Graham ◽  
Ivy Baremore ◽  
Dan Castellanos ◽  
Hilmar Salazar ◽  
...  
Keyword(s):  
Positive Impact ◽  
Distance Sampling ◽  
Suitable Habitat ◽  
Nurse Shark ◽  
Western Atlantic ◽  
Ginglymostoma Cirratum ◽  
Data Deficient ◽  
Abundance And Distribution ◽  
Nurse Sharks

The study presents the first national assessment of a nurse shark (Ginglymostoma cirratum) population, conducted using a combination of transect surveys and baited remote underwater videos (BRUVs). Density of nurse sharks in Belize was found to be higher in reefs than in lagoons, and in the atolls furthest away from the mainland and human settlements. Only large and old protected areas were found to have a positive impact on nurse shark abundance. Absolute abundance of nurse sharks was estimated using distance sampling analysis, giving a total nurse shark population in the range of 3,858 to 14,375 sharks. Thanks to a vast area of suitable habitat for nurse sharks in the country and legislation already in place for the safeguard of the species, Belize could represent an important hotspot for nurse sharks in the Western Atlantic. The data presented here hence offers a baseline for the long-term monitoring of the Belizean nurse shark population and improves our understanding of nurse shark abundance and distribution in the wider Caribbean basin.

Characterization of testicular morphology and spermatogenesis in the nurse sharks Ginglymostoma cirratum (Bonnaterre, 1788)

Zoomorphology ◽  
2014 ◽  
Vol 134 (1) ◽  
pp. 117-123 ◽  
Author(s):  
Mariana G. Rêgo ◽  
John Fitzpatrick ◽  
Fábio H. V. Hazin ◽  
Maria Lucia Góes de Araújo ◽  
Leonardo Morais da Silveira ◽  
...  
Keyword(s):  
Ginglymostoma Cirratum ◽  
Testicular Morphology ◽  
Nurse Sharks
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