TITLE

Impacto de la luz artificial sobre la anidación de la tortuga marina Dermochelys coriacea (Testudines: Dermochelyidae), en playa Cipara, Venezuela

AUTHOR(S)
Médicci, María Rondón; Buitrago, Joaquín; Mccoy, Michael
PUB. DATE
September 2009
SOURCE
Revista de Biología Tropical;sep2009, Vol. 57 Issue 3, p515
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The number of Leatherback turtle nests and their spatial distribution was compared between years with and without artificial light, and between dark and lighted beach segments, in Cipara Beach, Paria Peninsula, Venezuela. Residents were interviewed to identify their perceptions about the impact of artificial light on sea turtles. Mean volume of sand per meter of beach was larger at La Peña, Cipara and La Remate and smaller at Varadero (p<0.001), increasing from April to June and later decreasing until August (p<0.05). Mean percentage of gravel was higher at Varadero and La Peña, and lower at La Remate and Cipara. Most interviewed people said that artificial light does not affect sea turtles. Between 2000 and 2005, 1 217 leatherback landings and 1 056 nests were observed. Successful nests increased with the years (p=0.035) as well as total nest number (p=0.015). From 2000 through 2003 there were 743 landings, 661 nests and 374 clutches. During the two years with electric light (2004-2005), there were 474 landings, 395 nests and 232 clutches. Proportion of landings with nest building decreased significantly during the years with electric light (p= 0.005), but nesting success did not vary (p= 0.402). No significant difference was found between landings per beach meter in dark and lighted sectors (p=0.244), between nests built (p=0.379) and in the rate of successful nesting (p=0.516). Dark and lighted sectors did not differ in the proportion of landings with nest building (p=0.067) and success rate (p=0.833).
ACCESSION #
43899432

 

Related Articles

  • Up from the sea. Gilbertas, Bernadette // International Wildlife;Sep/Oct98, Vol. 28 Issue 5, p30 

    Reports on the leatherback sea turtles. Locations of nesting sites around the world; Laying and hatching of the eggs in the sand; Estimate on the survival of the hatchlings until the adult stage. INSET: Turtles at sea: NWF and trade.

  • Influência do local da desova na incubação de Dermochelys coriacea Vandelli, 1761 (Testudines: Dermochelyidae) na Reserva Biológica de Comboios, norte do estado do Espírito Santo, Brasil. dos Santos, Conrado Hastenreiter; Júnior, Paulo Dias Ferreira // Biota Neotropica;2009, Vol. 9 Issue 3, p413 

    The place and the nesting time have great influence on the reproduction of sea turtles, as they will affect the incubation temperature of the eggs. The great dynamism of the coastal environment can cause erosion in some parts of beaches making it necessary to transfer nests to safer and suitable...

  • Tasmania. Knee, Anna; Bryant, Sally // Wildlife Australia;Autumn99, Vol. 36 Issue 1, p10 

    Reports on the behavior of wildlife in Tasmania in the autumn of 1999. Includes migration of bird species pardalotes and Grey Fantails; Search for mates by three species of freshwater lobsters; Visit of Leatherback turtles around the waters of the Bass Strait Islands.

  • Migratory and reproductive movements of male leatherback turtles ( Dermochelys coriacea). James, Michael C.; Eckert, Scott A.; Myers, Ransom A. // Marine Biology;Aug2005, Vol. 147 Issue 4, p845 

    The biology of the endangered leatherback turtle ( Dermochelys coriacea) at sea is poorly understood. As research has been almost exclusively limited to studies of nesting females, the movements of male turtles and the timing and location of mating activity have remained unknown. We report on...

  • Interaction between killer whales (Orcinus orca) and a leatherback turtle (Dermochelys coriacea) off the north-eastern coast of Venezuela. Oviedo, Lenin; Esteves, María Alejandra; Alfe, Estefanía; Acevedo, Romina; Bolaños-Jiménez, Jaime // Marine Biodiversity Records;Jan2009, Vol. 2 Issue 1, pN.PAG 

    The presence of Orcinus orca in Venezuelan waters has remained somewhat unclear. On 15 April 2007 a group of three killer whales was recorded on video interacting with a leatherback turtle off north-eastern Venezuela. This report is based on an extensive review of the original video taken during...

  • Influence of nest location and yolkless eggs on the hatching success of leatherback turtle clutches in French Guiana. Caut, Stéphane; Guirlet, Elodie; Jouquet, Pascal; Girondot, Marc // Canadian Journal of Zoology;Jun2006, Vol. 84 Issue 6, p908 

    The hatching success of leatherback turtles, Dermochelys coriacea (Vandelli, 1761), is influenced by heterogeneously distributed ecological factors. However, the hatching success according to nest-site selection has rarely been studied and little is known about the role of nest-site selection...

  • ANIMAL ARCHITECTS. Costello, Emily // Science World;9/13/2002, Vol. 59 Issue 1, p12 

    Provides information on the architectural skills of animals.

  • OCEAN SUPERSTAR. MUSGRAVE, RUTH A. // National Geographic Kids;Mar2012, Issue 418, p16 

    This article offer information on several species of sea turtles. Green sea turtles have ways to remove algae, barnacles and parasites from their shells and skin. The Kemp's ridley sea turtles are quick in digging a nest compared to other species. The leatherback sea turtle measures at an...

  • READY, SET, SWIM!  // Scholastic SuperScience;Sep2007, Vol. 19 Issue 1, p3 

    The article presents information on the Great Turtle Race that began on a beach in Costa Rica where many leatherback turtle lay their eggs.

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics