TY - JOUR

T1 - Sexual dimorphism patterns of the White Sea threespine stickleback (Gasterosteus aculeatus)

AU - Dorgham, Ahmed

AU - Candolin, Ulrika

AU - Ivanova, Tatiana

AU - Ivanov, Mikhail

AU - Nadtochii, Ekaterina

AU - Yurtseva, Anastasia

AU - Lajus, Dmitry

N1 - Dorgham, A., Candolin, U., Ivanova, T., Ivanov, M., Nadtochii, E., Yurtseva, A., & Lajus, D. (2021). Sexual dimorphism patterns of the White Sea threespine stickleback (<em>Gasterosteus aculeatus</em&gt;). Biological Communications, 66(3), 256–267. https://doi.org/10.21638/spbu03.2021.307

PY - 2021/11/12

Y1 - 2021/11/12

N2 - Sexual dimorphism (SD) in the threespine stickleback Gasterosteus aculeatus reflects the different roles of the sexes in reproduction and their adaptations to different ecological niches. We quantified SD in one population of marine stickleback from the White Sea, collected during the spawning period from three spawning grounds, each at a distance of 5 km or less from the others. We used a landmark-based approach to quantify variation in 44 morphometric linear traits. In total, 749 females and 693 males were analyzed. In males, anterior body parts are larger — the base of the caudal fin and armor structures such as the first and second dorsal spines and the pelvic spine. Females have larger posterior bodies — the abdomen, pelvic girdle and the third dorsal spine. The SD of caudal body parts exhibits complex patterns. In White Sea threespine stickleback, SD patterns are generally similar to other populations of the species, but more often show male-biased patterns. Female-biased size SD may be associated with the female biased sex ratio of White Sea stickleback.

AB - Sexual dimorphism (SD) in the threespine stickleback Gasterosteus aculeatus reflects the different roles of the sexes in reproduction and their adaptations to different ecological niches. We quantified SD in one population of marine stickleback from the White Sea, collected during the spawning period from three spawning grounds, each at a distance of 5 km or less from the others. We used a landmark-based approach to quantify variation in 44 morphometric linear traits. In total, 749 females and 693 males were analyzed. In males, anterior body parts are larger — the base of the caudal fin and armor structures such as the first and second dorsal spines and the pelvic spine. Females have larger posterior bodies — the abdomen, pelvic girdle and the third dorsal spine. The SD of caudal body parts exhibits complex patterns. In White Sea threespine stickleback, SD patterns are generally similar to other populations of the species, but more often show male-biased patterns. Female-biased size SD may be associated with the female biased sex ratio of White Sea stickleback.

KW - Body shape

KW - Body size

KW - Morphological variation

KW - Sexual dimorphism

KW - Threespine stickleback

KW - White Sea

UR - http://www.scopus.com/inward/record.url?scp=85120436349&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/f59c17e1-1267-345b-90f9-8f218dbaded6/

U2 - 10.21638/spbu03.2021.307

DO - 10.21638/spbu03.2021.307

M3 - Article

AN - SCOPUS:85120436349

VL - 66

SP - 256

EP - 267

JO - Biological Communications

JF - Biological Communications

SN - 2542-2154

IS - 3

ER -