TY - JOUR

T1 - Moonsnail hatching success, development timing and early feeding behaviour at the high-latitude White Sea

AU - Aristov, Dmitriy

AU - Flachinskaya, Lyudmila

AU - Varfolomeeva, Marina

N1 - Publisher Copyright: Copyright © Marine Biological Association of the United Kingdom 2020.

PY - 2020/11

Y1 - 2020/11

N2 - As predators, Naticidae (Gastropoda) can shape marine soft-sediment communities. Thus understanding of the reproductive biology and development of moonsnails is of great importance. Most moonsnails lay large egg masses, known as sand or egg collars, which are freely distributed on sand or muddy sediments. Here we report upon the abundance of egg collars of two naticid species, Amauropsis islandica and Euspira pallida, from the high-latitude White Sea, as well as describe the morphology of egg collars and hatching success, with a brief description of juvenile feeding in A. islandica. While in the subtidal zone, the egg collars of E. pallida were 10 times more abundant than of A. islandica, the egg collars of the latter species were the only ones that occur in the intertidal zone. The morphology of an egg collar of E. pallida differed from the literature descriptions by having a plicated basal margin. The number of egg capsules inside the collars was twice as high in A. islandica compared with E. pallida, but they were smaller. Amauropsis islandica hatchlings were larger and hatching success was more than twice that in E. pallida. We suggest that these characteristics promote the high abundance of A. islandica populations observed on some tidal flats of the White Sea. Surprisingly, A. islandica juveniles could perform non-drilling feeding in the first month after hatching. This study fills the gap in the knowledge of naticid reproductive biology at high latitudes.

AB - As predators, Naticidae (Gastropoda) can shape marine soft-sediment communities. Thus understanding of the reproductive biology and development of moonsnails is of great importance. Most moonsnails lay large egg masses, known as sand or egg collars, which are freely distributed on sand or muddy sediments. Here we report upon the abundance of egg collars of two naticid species, Amauropsis islandica and Euspira pallida, from the high-latitude White Sea, as well as describe the morphology of egg collars and hatching success, with a brief description of juvenile feeding in A. islandica. While in the subtidal zone, the egg collars of E. pallida were 10 times more abundant than of A. islandica, the egg collars of the latter species were the only ones that occur in the intertidal zone. The morphology of an egg collar of E. pallida differed from the literature descriptions by having a plicated basal margin. The number of egg capsules inside the collars was twice as high in A. islandica compared with E. pallida, but they were smaller. Amauropsis islandica hatchlings were larger and hatching success was more than twice that in E. pallida. We suggest that these characteristics promote the high abundance of A. islandica populations observed on some tidal flats of the White Sea. Surprisingly, A. islandica juveniles could perform non-drilling feeding in the first month after hatching. This study fills the gap in the knowledge of naticid reproductive biology at high latitudes.

KW - Amauropsis islandica

KW - Euspira pallida

KW - White Sea

KW - egg collars

KW - naticid

KW - switch feeding mode

KW - MASSES

KW - CHUPA INLET

KW - LONG-TERM CULTURES

KW - EGG-COLLAR PRODUCTION

KW - GASTROPODA NATICIDAE

KW - MOLLUSCA

KW - PREDATOR-PREY RELATIONSHIP

KW - GROWTH

KW - LARVAE

KW - REPRODUCTION

UR - http://www.scopus.com/inward/record.url?scp=85097290877&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/21d95488-7ce6-3e5f-aca5-454a30a637b1/

U2 - 10.1017/S0025315420001083

DO - 10.1017/S0025315420001083

M3 - Article

VL - 100

SP - 1071

EP - 1078

JO - Journal of the Marine Biological Association of the United Kingdom

JF - Journal of the Marine Biological Association of the United Kingdom

SN - 0025-3154

IS - 7

ER -