. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HERMIT CRAB SPERMATOPHORE DIVERSITY 245. Figure 3. (A) Birgiis latro (Coenobitidae). Scanning electron micrograph of two sperniatophores showing conspicuous lateral ridge. (B and C) Transmission electron micrographs showing detail of the lateral ndge. (B) Clibanarius virescens (Diogenidae). Note the apparent plug of material in the lateral ridge. (C) Coenobita spinosus (Coenobitidae). (D) Caldnus mimilus (Diogenidae). Light micrograph showing splitting of the spermatophore ampulla at the lateral ridge to release spermatozoa.
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. HERMIT CRAB SPERMATOPHORE DIVERSITY 245. Figure 3. (A) Birgiis latro (Coenobitidae). Scanning electron micrograph of two sperniatophores showing conspicuous lateral ridge. (B and C) Transmission electron micrographs showing detail of the lateral ndge. (B) Clibanarius virescens (Diogenidae). Note the apparent plug of material in the lateral ridge. (C) Coenobita spinosus (Coenobitidae). (D) Caldnus mimilus (Diogenidae). Light micrograph showing splitting of the spermatophore ampulla at the lateral ridge to release spermatozoa. (Arrow indicates the point of separation of the two ampullar halves), a; ampulla, em; extracellular matrix, r; lateral ridge, si spermatozoa, sw; sper- matophore wall. plug appears to cement the two halves of the ampulla together in this species. Release of spermatozoa from the splitting lateral ridge of a spermatophore of Caldnus min- iitus is seen in Figure 3D. Spermatophore morphology and modes of sperm transfer provide some clarification of systematic prob- lems at familial and generic levels (Schaller, 1979; Bauer, 1986) and sometimes even at the specific level (Matthews, 1953, 1956). The phylogenetic value of spermatophore form and sperm transfer mode has been demonstrated in pseudoscorpions by Weygoldt (1966). One has to be cautious, however, in drawing homologies between spe- cies based on spermatophore form and modes of sperm transfer before the modes of formation, chemical nature, and ultrastructural morphology of the spermatophores in question have been studied in depth. Similarly, caution has to be exercised when phylogenetic hypotheses are formulated on limited data sets and small numbers of representatives from the selected taxa. Both Clark (1981) and Mann (1984) state that particular modes of sperm transfer used by organisms may be more directly influ- enced by the habitat of those organisms than the phy-. Please note that these images are extracted from scanned
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
