Hermaphroditism in a violet snail, Janthina pallida (Gastropoda, Caenogastropoda): a contribution

The first data are provided on the gonad development of the violet snail Janthina pallida Thompson, 1840. Histological investigations were carried out on twenty-two specimens cast ashore alive in the Straits of Messina (central Mediterranean). All specimens had an ovotestis with distinct male and fe...

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Veröffentlicht in:	Biológia 2019-05, Vol.74 (5), p.509-513
Hauptverfasser:	Calabrò, Concetta, Rindone, Antonino, Bertuccio, Clara, Giacobbe, Salvatore
Format:	Artikel
Sprache:	eng
Schlagworte:	Biomedical and Life Sciences Cell Biology Females Food availability Gonads Hermaphroditism Janthina pallida Life Sciences Microbiology Oocytes Oogenesis Plant Sciences Population density Short Communication Spermatogenesis Spermatozoa Straits Zoology
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creator	Calabrò, Concetta Rindone, Antonino Bertuccio, Clara Giacobbe, Salvatore
description	The first data are provided on the gonad development of the violet snail Janthina pallida Thompson, 1840. Histological investigations were carried out on twenty-two specimens cast ashore alive in the Straits of Messina (central Mediterranean). All specimens had an ovotestis with distinct male and female gonads. In large individuals, germinative cells in different stages of spermatogenesis and flagellate spermatozoa were detected, together with oocytes in different stages of oogenesis and mature oocytes; in small specimens only immature male and female gonads were observed. No specimens of intermediate size were found. Simultaneous rather than size-related hermaphroditism in J. pallida contrasts with the current view of protandric hermaphroditism as a common trait in Janthina genus, instead suggesting a changing reproductive pattern, driven by population density and food availability.
doi_str_mv	10.2478/s11756-018-00177-9
format	Article
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Histological investigations were carried out on twenty-two specimens cast ashore alive in the Straits of Messina (central Mediterranean). All specimens had an ovotestis with distinct male and female gonads. In large individuals, germinative cells in different stages of spermatogenesis and flagellate spermatozoa were detected, together with oocytes in different stages of oogenesis and mature oocytes; in small specimens only immature male and female gonads were observed. No specimens of intermediate size were found. Simultaneous rather than size-related hermaphroditism in J. pallida contrasts with the current view of protandric hermaphroditism as a common trait in Janthina genus, instead suggesting a changing reproductive pattern, driven by population density and food availability.</description><subject>Biomedical and Life Sciences</subject><subject>Cell Biology</subject><subject>Females</subject><subject>Food availability</subject><subject>Gonads</subject><subject>Hermaphroditism</subject><subject>Janthina pallida</subject><subject>Life Sciences</subject><subject>Microbiology</subject><subject>Oocytes</subject><subject>Oogenesis</subject><subject>Plant Sciences</subject><subject>Population density</subject><subject>Short Communication</subject><subject>Spermatogenesis</subject><subject>Spermatozoa</subject><subject>Straits</subject><subject>Zoology</subject><issn>0006-3088</issn><issn>1336-9563</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><recordid>eNp9kMFKxDAQhoMouK6-gKeCF4WtTpqmTbzJorvKghc9h2mb7GbpJjXpCr691YrevMzA8H__wEfIOYXrLC_FTaS05EUKVKQAtCxTeUAmlLEilbxgh2QCAEXKQIhjchLjFiAvOdAJwaUOO-w2wTe2t3GXWJdg8m59q_skOrTtLHlC12-sw6TDtrUNJpcLjH3wnW9wlsxRO7_-PVzdDnztXR9ste-td6fkyGAb9dnPnpLXh_uX-TJdPS8e53ertGYF61OsGRdYmLyptWiolAYAm0owk1e5Rl7qQpa5NAWnmAOteC2EkaU0-TAzptmUXIy9XfBvex17tfX74IaXKssoAKecsSGVjak6-BiDNqoLdofhQ1FQXyrVqFINKtW3SiUHiI1QHMJurcNf9T_UJz-hd2Y</recordid><startdate>20190501</startdate><enddate>20190501</enddate><creator>Calabrò, Concetta</creator><creator>Rindone, Antonino</creator><creator>Bertuccio, Clara</creator><creator>Giacobbe, Salvatore</creator><general>Springer International Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QG</scope><scope>7QL</scope><scope>7QP</scope><scope>7QR</scope><scope>7SN</scope><scope>7SS</scope><scope>7T5</scope><scope>7T7</scope><scope>7TK</scope><scope>7TM</scope><scope>8FD</scope><scope>C1K</scope><scope>FR3</scope><scope>H94</scope><scope>K9.</scope><scope>M7N</scope><scope>P64</scope><scope>RC3</scope><orcidid>https://orcid.org/0000-0002-4619-4862</orcidid></search><sort><creationdate>20190501</creationdate><title>Hermaphroditism in a violet snail, Janthina pallida (Gastropoda, Caenogastropoda): a contribution</title><author>Calabrò, Concetta ; 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subjects	Biomedical and Life Sciences Cell Biology Females Food availability Gonads Hermaphroditism Janthina pallida Life Sciences Microbiology Oocytes Oogenesis Plant Sciences Population density Short Communication Spermatogenesis Spermatozoa Straits Zoology
title	Hermaphroditism in a violet snail, Janthina pallida (Gastropoda, Caenogastropoda): a contribution
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