Sphaeriidae - Wikipedia
Sphaeriidae is a family of small to minute freshwater bivalve molluscs in the order Sphaeriida. In the US, they are commonly known as pea clams or fingernail clams. [3] [4]
泥蚬科 - 维基百科，自由的百科全书
Apr 6, 2024 · 泥 蚬 xiǎn 科 （学名： Sphaeriidae）是 异齿亚纲 不等齿总目 之下的一个 科， 目 地位未定，其物种皆为 小型到微型 的淡水 双壳纲 软体动物。 本科旧属 帘蛤目，2016年与原来 豌豆蚬科 （Pisidiidae） [3] 合并后，成立 泥蚬总科 [4][5][6]。 泥蚬科物种是双壳纲物种在淡水环境生活的三大分支之下，标志着双壳纲软体动物从海洋迁往淡水环境栖息的过程 [7]。 本科物种皆为 雌雄间性 （hermaphrodites），在体内受精。 幼体为 卵胎生 （ovoviviparity），会在母体内先孵 …
Phylogeny, taxonomy, and biogeography of the Sphaeriinae …
Nov 4, 2023 · The subfamily Sphaeriinae is a diverse and ecologically significant group of freshwater invertebrates, playing a keystone role in the energy flow and nutrient cycling in aquatic ecosystems. Despite a long history of its study, the taxonomic structure and species content of this group are a matter of ongoing disputes between malacologists.
Sphaeriidae - an overview | ScienceDirect Topics
Sphaeriids are euryoecic (i.e., have a broad habitat range); some members inhabiting stressful habitats, such as ephemeral ponds, and small, variable flow streams, while others live in stable, profundal lake habitats (Burky, 1983). Here, we generalize the life-history traits of sphaeriids within adaptive and evolutionary frameworks.
Chapter 1 describes the anatomy of corbiculids and sphaeriids, including shell structure and all the organ systems. Chapter 2 describes the reproductive and developmental biology of the two families, beginning with maturation of the gonads, gametogenesis, cleavage of the embryo, and larval development.
Phylogeny, taxonomy, and biogeography of the Sphaeriinae …
Nov 4, 2023 · We clarify the taxonomy, distribution, and evolutionary biogeography of the Sphaeriinae around the world based on the largest dataset of DNA sequences of these clams ever accumulated, which...
Morphology and phylogenetic relationships of genera of North …
Recent phylogenetic studies of the Sphaeriidae have produced conflicting results between morphological and molecular data sets for two major topological elements, i.e., monophyly of Pisidium and of asynchronous brooders (Sphaerium and Musculium taxa).
Molecular Phylogenetics and Evolution
Aug 1, 2022 · This study focused on freshwater clams (Sphaeriidae) in Japan, a biodiversity hotspot of freshwater molluscs. Molecular phylogenetic approaches, including divergence time estimation, species delimitation, rarefaction, and biogeographic area estimation, were used to reveal the nature of the species diversity and its formation process, which are ...
Phylogenetic reconstruction of Sphaeriidae (Veneroida: Bivalvia) …
Jan 1, 2017 · The cosmopolitan viviparous bivalves of the family Sphaeriidae (fingernail clams) comprise not only some of the smallest freshwater molluscs, but also an abundant and ecologically important group...
The fingernail clams (Bivalvia: Veneroida: Sphaeriidae) of Morocco ...
Dec 2, 2021 · One of the freshwater taxa present in these rivers is the family Sphaeriidae, commonly referred to as fingernail and pea clams, including the tiniest freshwater bivalves in the world with lengths from 2 to 25 mm ( Frankiewicz 2018) and a worldwide distribution, except for Antarctica ( Thorp and Covich 2010, Williams et al. 2014 ).