Alternation of the female form in Cambaridae (Decapoda: Astacidea) and the designation of a neotype for Procambarus clarkii (Girard, 1852) (Cambaridae: Decapoda)
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引用次数: 0
Abstract
Abstract The alternation of the female form is examined in eleven species of Cambaridae: Cambarus angularisHobbs & Bouchard, 1994, C. bartonii (Fabricius, 1798), Faxonius virilis (Hagen, 1870), Procambarus alleni (Faxon, 1884), P. clarkii (Girard, 1852), P. fallax (Hagen, 1870), P. pallidus (Hobbs, 1940), Cambarellus leslieiFitzpatrick & Laning, 1976, C. patzcuarensisVillalobos, 1943, C. schmittiHobbs, 1942, and C. shufeldtii (Faxon, 1884). All species show form-alternation in their annulus ventralis, that of Form I showing a cornified sinus and inflated fossa, but the Form-II females show a un-cornificed sinus and deflated fossa. Morphology of the Form-II annulus ventralis is similar to that of a juvenile. A wider abdomen in Form-I females occurred in five species (C. angularis, C. virilis, C. lesliei, C. schmitti, and C. shufeldtii), and inflation of the palm of the cheliped in Form-I females was observed in four (C. angularis, C. bartonii, F. virilis, and P. clarkii). The range of morphometric female-form alternation demonstrates four patterns: 1) wider abdomen and inflated chela (C. angularis, and C. bartonii), 2) wider abdomen and no chela inflation (C. lesliei, C. schmitti, and C. shufeldtii), 3) no wide abdomen and inflated chela (F. virilis and P. clarkii), 4) no wider abdomen and no chela inflation (P. alleni, P. pallidus, and P. fallax,). A neotype of P. clarkii is also designated and described.
Abstract The alternation of the female form is examined in eleven species of Cambaridae: Cambarus angularisHobbs & Bouchard, 1994, C. bartonii (Fabricius, 1798), Faxonius virilis (Hagen, 1870), Procambarus alleni (Faxon, 1884), P. clarkii (Girard, 1852), P. fallax (Hagen, 1870), P. pallidus (Hobbs, 1940), Cambarellus leslieiFitzpatrick & Bouchard, 1994.pallidus (Hobbs, 1940), Cambarellus leslieiFitzpatrick & Laning, 1976, C. patzcuarensisVillalobos, 1943, C. schmittiHobbs, 1942, and C. shufeldtii (Faxon, 1884)。所有物种的环腹部都有形态变化,形态 I 的环腹部有粟粒状的窦和膨大的窝,而形态 II 的雌性环腹部则没有粟粒状的窦和膨大的窝。Form-II 环腹的形态与幼鱼相似。有 5 个物种(C. angularis、C. virilis、C. lesliei、C. schmitti 和 C. shufeldtii)的 Form-I 雌体腹部较宽,有 4 个物种(C. angularis、C. bartonii、F. virilis 和 P. clarkii)的 Form-I 雌体螯掌膨胀。雌-雌形态交替的形态测量范围显示了四种模式:1)腹部较宽,螯膨大(C. angularis 和 C. bartonii);2)腹部较宽,螯不膨大(C. lesliei、C. schmitti 和 C. shufeldtii);3)腹部不宽,螯膨大(F. virilis 和 P. clarkii);4)腹部不宽,螯不膨大(P. alleni、P. pallidus 和 P. fallax)。还指定并描述了 P. clarkii 的新模式。
期刊介绍:
The Journal of Crustacean Biology is the official journal of The Crustacean Society, publishing peer-reviewed research on all aspects of crustacean biology and other marine arthropods.
Papers are published in English only, but abstracts or summaries in French, German, Portuguese, or Spanish may be added when appropriate.