ABNORMAL GAMETOGENESIS AND SEX RATIO IN TRIPLOID SOFT-SHELL CLAMS (MYA ARENARIA)
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چکیده
منابع مشابه
Resuspension of postlarval soft-shell clams Mya arenaria through disturbance by the mud snail Ilyanassa obsoleta
Transport and mortality of newly settled post larvae potentially have a large influence on the population dynamics and adult distributions of coastal benthic species, including the soft-shell clam Mya arenaria. Post-settlement transport typically occurs when boundary shear stresses are high enough to resuspend the surface sediments in which the small clams reside. The objective of the present s...
متن کاملReverse transcriptase activity associated with haemic neoplasia in the soft-shell clam Mya arenaria.
Reverse transcriptase (RT) activity has been reported in bivalves affected by haemic neoplasia (HN). Since all retroviruses have RT, detection of RT activity was regarded as evidence for the retroviral etiology of HN. This study investigates the relationship between RT levels and the progress of HN as indicated by percentages of tetraploid cells in soft-shell clams Mya arenaria. The percentages...
متن کاملGerminomas and teratoid siphon anomalies in softshell clams, Mya arenaria, environmentally exposed to herbicides.
Seminomas and dysgerminomas are epizootic in softshell clams, Mya arenaria, from three Maine estuaries contaminated with herbicides. The first epizootic was discovered in 22% of clams collected as Searsport near Long Cove Brook and three culverts that conveyed heating oil and jet fuel spilled from a tank farm in 1971. Data from subsequent epizootiological studies and a series of long-term exper...
متن کاملEpizootiology and distribution of transmissible sarcoma in Maryland softshell clams, Mya arenaria, 1984-1988.
Seasonal and geographic studies of transmissible sarcoma in Maryland softshell clams, Mya arenaria, were carried out from 1984 to 1988. Three major epizootics occurred in our sampling location during this time, resulting in prevalences as high as 90%, with comparable mortalities in other high prevalence areas. The disease invaded populations of large adult clams first, later spreading to the sm...
متن کاملAnalysis of Gene Expression in an Inbred Line of Soft-Shell Clams (Mya arenaria) Displaying Growth Heterosis: Regulation of Structural Genes and the NOD2 Pathway
Mya arenaria is a bivalve mollusk of commercial and economic importance, currently impacted by ocean warming, acidification, and invasive species. In order to inform studies on the growth of M. arenaria, we selected and inbred a population of soft-shell clams for a fast-growth phenotype. This population displayed significantly faster growth (p < 0.0001), as measured by 35.4% greater shell size....
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ژورنال
عنوان ژورنال: The Biological Bulletin
سال: 1986
ISSN: 0006-3185,1939-8697
DOI: 10.2307/1541803