ostracoda
111midgut — See: mesenteron [Martin, 2005]. See: mesenteron [McLaughlin, 1980]. (Order Cladocera): Elongate section of digestive tract between esophagus and hindgut. Occasionally one may distinguish between a more expanded stomach region anteriorly and a… …
112mouth — (Order Cladocera): Anterior opening of digestive tract under labrum; opens into esophagus [Stachowitsch, 1992]. (Order Notostraca): Anterior opening of digestive tract on underside of head; located under labrum and opening into esophagus… …
113nauplius — Characteristic crustacean larval stage bearing median simple (naupliar) eye and 3 pairs of setose, functional appendages destined to become the antennules, antennae and mandibles [Brusca and Brusca, 2002]. Early larval stage having only… …
114nauplius eye — (Order Stomatopoda): Minute, unpaired light sensitive organ on ocular plate between eyestalks (ocular peduncles) [Stachowitsch, 1992]. (Subclass Branchiura): On dorsal midline of carapace, one to three simple photosensitive structures. (See also… …
115ostium — Opening in wall of heart through which blood is drawn from the pericardial sinus [Holdich and Jones, 1983]. Valve of heart [Moore and McCormick, 1969]. Valved opening in heart for retum of blood. (Pl. ostia) [McLaughlin, 1980]. (Order Cladocera) …
116outer lamella — (Class Ostracoda): Relatively think outer wall of valve. Consists of a mineralized layer between two thinner, chitinous layers. (See also inner lamella) [Stachowitsch, 1992]. (Class Ostracoda): The outer layer of epidermis and cuticle of the… …
117oviduct — In females passageway from ovary to uterus and leading to genital aperture [Moore and McCormick, 1969]. Passageway from ovary to genital aperture [McLaughlin, 1980]. The duct connecting the posterior lobe of the ovary to the spermatheca [Ingle,… …
118paragnath — See: labium, metastoma [Martin, 2005]. A pair of ventral projections of the cephalic cuticle just posterior and medial to the mandibles. Each projection has two lobes, a broad lamellar outer lobe with hair like setae on the inner margins and a… …
119pericardium — Blood sinus surrounding heart and communicating with it by pair of ostia in each somite except terminal one, may run entire length of trunk above gut [Moore and McCormick, 1969]. Blood sinus surrounding heart and communicating with it by paired… …
120podomere — A segment of a crustacean appendage [Wilson, 1989]. A segment of an appendage joined to the body or to adjacent podomeres by joints and capable of independent movement [Warner, 1977]. Any one of the segments of an appendage, such as a segment of… …
