Quinca mirificaMees, 1966 is a relatively large cardinalfish endemic to western Australia that displays a combination of unusual traits for an apogonid, including solitary behavior, conspicuous ephemeral sexual dichromatism, lack of a dispersing larval period, and production of non-functional oocytes. The ovaries are of cystovarian type and present a germinal ridge running longitudinally along the entire medial face. Ovaries show distinct division in oocyte composition, with a clear division between a rostral section composed of normal oocytes, and a caudal section that is composed of a mass of ∼13,000 non-vitellogenic oocytes of ∼0.2–0.3 mm in diameter, which after hydration, measure ∼0.8–1.0 mm. The egg clutch contains ∼200–250 eggs of ∼3.5 mm in diameter. Egg clutches sometimes break during the transfer, and males retrieve no more than ∼50% of the eggs. Courtship and mating include a “holding behavior” not observed in other apogonids, and the mating process (egg transfer) lasts up to about 90 seconds, the longest observed in any apogonid. Males (orally) incubate the eggs and hatched embryos for about 22–26 days, fasting during this period. Embryos hatch after ∼22 days (8.5 mm SL) and remain in the male's oral cavity for another four days feeding endogenously before being released as juveniles (SL = 9.5 mm). Females became sexually mature at about 10–11 months of age (∼77 mm SL). A study with two females (13 spawns) showed mean frequency of ∼33 days between mating events. Gross anatomy of gonads, embryology, and juvenile development are described.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.