TY - JOUR
T1 - Hermaphroditism in two populations of Chiton articulatus (Mollusca: Polyplacophora) from the eastern tropical coast of México
AU - Ramírez-Álvarez, Citlalith
AU - Vélez-Arellano, Nurenskaya
AU - García-Domínguez, Federico Andrés
AU - García-Ibáñez, Sergio
AU - Ituarte, Cristián
N1 - Funding Information:
We are grateful to Secretaría de Investigación y Posgrado of the Instituto Politécnico Nacional for funding this work. Thanks to María Elena Sánchez Salazar for her editorial help on the English manuscript, and to two reviewers for their suggestions that improved the paper.
PY - 2014/1/2
Y1 - 2014/1/2
N2 - Through histological analyses, this study reveals an unusually high incidence of hermaphroditism in Chiton articulatus. Specimens were sampled every 30 days between September 2010 and September 2011 at two locations (Las Brisas and Jaramillo beaches, Acapulco) on the tropical eastern Pacific coast of Mexico. At both sites, hermaphroditism was found throughout the year, although in varying proportions. Higher percentages of hermaphroditism were found during the pre-spawning summer months (Las Brisas Beach 63%, Jaramillo Beach 68%). Two different kinds of hermaphroditic gonads were found, showing a preponderance of either male or female tissues but, commonly, female tissues occupied the greatest part of the gonad cross sections. Similar to other species of polyplacophorans, there was a predominance of males, although M:F sex ratios ranged from 0.7 to 4.5: 1 at Las Brisas Beach and 0.3-8: 1 at Jaramillo Beach.
AB - Through histological analyses, this study reveals an unusually high incidence of hermaphroditism in Chiton articulatus. Specimens were sampled every 30 days between September 2010 and September 2011 at two locations (Las Brisas and Jaramillo beaches, Acapulco) on the tropical eastern Pacific coast of Mexico. At both sites, hermaphroditism was found throughout the year, although in varying proportions. Higher percentages of hermaphroditism were found during the pre-spawning summer months (Las Brisas Beach 63%, Jaramillo Beach 68%). Two different kinds of hermaphroditic gonads were found, showing a preponderance of either male or female tissues but, commonly, female tissues occupied the greatest part of the gonad cross sections. Similar to other species of polyplacophorans, there was a predominance of males, although M:F sex ratios ranged from 0.7 to 4.5: 1 at Las Brisas Beach and 0.3-8: 1 at Jaramillo Beach.
KW - chiton
KW - eastern Pacific
KW - sexuality
UR - http://www.scopus.com/inward/record.url?scp=84892516504&partnerID=8YFLogxK
U2 - 10.1080/07924259.2013.808709
DO - 10.1080/07924259.2013.808709
M3 - Artículo
SN - 0792-4259
VL - 58
SP - 49
EP - 52
JO - Invertebrate Reproduction and Development
JF - Invertebrate Reproduction and Development
IS - 1
ER -