English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/48266
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Influence of environmental factors on the reproductive cycle of the eared ark Anadara notabilis (Röding, 1798) in Northeastern Venezuela

AuthorsFreites, L.; Montero, Lerimar; Arrieche, Dwight; Babarro, José M. F. ; Saucedo, Pedro E.; Cordova, Cirlen; García, Natividad
KeywordsEared ark
Anadara notabilis
Environmental factors
Gametogenesis
Venezuela
Issue Date2010
PublisherNational Shellfisheries Association
CitationJournal of Shellfish Research 29(1): 69-75 (2010)
AbstractThe reproductive cycle of the eared ark Anadara notabilis and its relationship with environmental factors was evaluated every 15 days between March 2004 and February 2005 at the northern part of the Peninsula de Araya, Venezuela. Environmental factors measured included temperature, salinity, chlorophyll a, and total seston, including the particulate organic matter and particulate inorganic matter fractions. Adult specimens were collected using a net drag and then randomly selected to estimate wet live biomass and dry biomass of soft body tissues. Gonad samples were processed with histological analysis to determine sex ratio, developmental stages, and variations of follicle size. Reproduction in A. notabilis was continuous throughout the year, with spawning peaks occurring in June and October, coinciding with the lowest water temperatures. In March, September, and November 2004, specimens attained the highest dry biomass values, whereas lowest dry biomass occurred in June and October 2004. Stepwise regression analyses demonstrated that temperature and particulate organic matter values are the main modulators of reproductive events. When temperature decreased, dribble spawning was detected in this species, possibly inducing a survival strategy whereby the spawning period is extended to increase reproductive success
Description5 figuras, 2 tablas
Publisher version (URL)http://dx.doi.org/10.2983/035.029.0128
URIhttp://hdl.handle.net/10261/48266
DOI10.2983/035.029.0128
ISSN0730-8000
Appears in Collections:(IIM) Artículos
Files in This Item:
File Description SizeFormat 
Roding 1798.pdf846,88 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.